hi gridflow 0.9.5

svn path=/trunk/; revision=12611

31 files changed, 3938 insertions, 0 deletions

diff --git a/externals/gridflow/bundled/Base/CPPExtern.h b/externals/gridflow/bundled/Base/CPPExtern.h
new file mode 100644
index 00000000..7f0630dd
--- /dev/null
+++ b/externals/gridflow/bundled/Base/CPPExtern.h
@@ -0,0 +1,521 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    The base class for all externs written in C++
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_CPPEXTERN_H_
+#define INCLUDE_CPPEXTERN_H_
+
+//#include "Base/config.h"
+#include "Base/GemExportDef.h"
+
+#include "m_pd.h"
+//#include "Base/GemVersion.h"
+
+#include <new>
+
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemException
+    
+    an exception class...
+
+DESCRIPTION
+    
+    this is a class, we can throw on creation, 
+    to make sure that the pd-object can not be created
+
+
+    
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemException
+{
+ public:
+  GemException() throw();
+  GemException(const char*error) throw();
+  virtual ~GemException() throw();
+  
+  virtual const char *what() const throw();
+  virtual void report() const throw();
+ private:
+  const char*ErrorString;
+};
+
+class CPPExtern;
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    Obj_header
+    
+    The obligatory object header
+
+DESCRIPTION
+    
+    This is in a separate struct to assure that when PD uses the
+    class, the t_object is the very first thing.  If it were the 
+    first thing in CPPExtern, then there could be problems with
+    the vtable.
+    
+-----------------------------------------------------------------*/
+struct GEM_EXTERN Obj_header
+{
+    	//////////
+    	// The obligatory object header
+    	t_object    	    pd_obj;
+
+    	//////////
+    	// Our data structure
+        CPPExtern           *data;
+};
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    CPPExtern
+    
+    The base class for all externs written in C++
+
+DESCRIPTION
+    
+    Each extern which is written in C++ needs to use the #defines at the
+    end of this header file.  Currently, the operator new(size_t) and
+    operator delete(void *) are not overridden.  This will be a problem
+    when PD expects everything to fit in its memory space and control
+    all memory allocation.
+    
+    The define
+    
+        CPPEXTERN_HEADER(NEW_CLASS, PARENT_CLASS)
+    
+    should be somewhere in your header file.
+    One of the defines like
+    
+    CPPEXTERN_NEW(NEW_CLASS)
+    CPPEXTERN_NEW_WITH_TWO_ARGS(NEW_CLASS, t_floatarg, A_FLOAT, t_floatarg, A_FLOAT)
+    
+    should be the first thing in your implementation file.
+    NEW_CLASS is the name of your class and PARENT_CLASS is the 
+    parent of your class.
+        
+-----------------------------------------------------------------*/
+class GEM_EXTERN CPPExtern
+{
+    public:
+
+        //////////
+        // Constructor
+    	CPPExtern();
+
+        //////////
+        // The Pd header
+        t_object          *x_obj;
+
+    	//////////
+    	// Destructor
+    	virtual ~CPPExtern() = 0;
+    	
+        //////////
+        // Get the object's canvas
+        t_canvas            *getCanvas()        { return(m_canvas); }
+
+        //////////
+        // This is a holder - don't touch it
+        static t_object     *m_holder;
+
+	//////////
+	// my name
+	static char          *m_holdname;
+	t_symbol             *m_objectname;
+
+    protected:
+    	
+    	//////////
+    	// Creation callback
+    	static void 	real_obj_setupCallback(t_class *) {}
+
+    private:
+
+        //////////
+        // The canvas that the object is in
+        t_canvas            *m_canvas;
+
+ public:
+        // these call pd's print-functions, and eventually prepend the object's name
+	void            post(const char*format, ...);
+	void            verbose(const int level, const char*format, ...);
+        void            error(const char*format, ...); /* internally uses pd_error() */
+
+ private:
+	static bool checkGemVersion(int major, int minor);
+};
+
+// This has a dummy arg so that NT won't complain
+GEM_EXTERN void *operator new(size_t, void *location, void *dummy);
+
+////////////////////////////////////////
+// This should be used in the header
+////////////////////////////////////////
+
+#define CPPEXTERN_HEADER(NEW_CLASS, PARENT_CLASS)    	    	\
+public:     	    	    	    	    	    	    	\
+static void obj_freeCallback(void *data)    	    	    	\
+{ CPPExtern *mydata = ((Obj_header *)data)->data; delete mydata; \
+  ((Obj_header *)data)->Obj_header::~Obj_header(); }   	    	\
+static void real_obj_setupCallback(t_class *classPtr)  	    	\
+{ PARENT_CLASS::real_obj_setupCallback(classPtr);    	    	\
+  NEW_CLASS::obj_setupCallback(classPtr); }  	    	    	\
+private:    	    	    	    	    	    	    	\
+static inline NEW_CLASS *GetMyClass(void *data) {return((NEW_CLASS *)((Obj_header *)data)->data);} \
+static void obj_setupCallback(t_class *classPtr);
+
+
+////////////////////////////////////////
+// This should be the first thing in the implementation file
+////////////////////////////////////////
+
+//
+// NO ARGUMENTS
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW(NEW_CLASS)    	    	    	    	\
+    REAL_NEW(NEW_CLASS)
+//
+// ONE ARGUMENT
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_ONE_ARG(NEW_CLASS, TYPE, PD_TYPE)    \
+    REAL_NEW_WITH_ARG(NEW_CLASS, TYPE, PD_TYPE)
+//
+// GIMME ARGUMENT
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_GIMME(NEW_CLASS)  	    	    	\
+    REAL_NEW_WITH_GIMME(NEW_CLASS)
+//
+// TWO ARGUMENTS
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_TWO_ARGS(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO)	\
+    REAL_NEW_WITH_ARG_ARG(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO)
+//
+// THREE ARGUMENTS
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_THREE_ARGS(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE)	\
+    REAL_NEW_WITH_ARG_ARG_ARG(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE)
+//
+// FOUR ARGUMENTS
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_FOUR_ARGS(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE, TFOUR, PD_FOUR) \
+    REAL_NEW_WITH_ARG_ARG_ARG_ARG(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE, TFOUR, PD_FOUR)
+//
+// FIVE ARGUMENTS
+/////////////////////////////////////////////////
+#define CPPEXTERN_NEW_WITH_FIVE_ARGS(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE, TFOUR, PD_FOUR, TFIVE, PD_FIVE) \
+    REAL_NEW_WITH_ARG_ARG_ARG_ARG_ARG(NEW_CLASS, TYPE, PD_TYPE, TTWO, PD_TWO, TTHREE, PD_THREE, TFOUR, PD_FOUR, TFIVE, PD_FIVE)
+	
+
+
+//////////////////////////////////////////////////////////////////////////////
+// These should never be called or used directly!!!
+//
+//
+///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////
+// static class:
+//   by default classes are declared static
+//   however, sometimes we need classes not-static, so we can refer to them
+//   from other classes
+///////////////////////////////////////////////////////////////////////////////
+#ifdef NO_STATIC_CLASS
+# define STATIC_CLASS
+#else
+# define STATIC_CLASS static
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// auto registering a class
+// this creates a dummy class, whose constructor calls the setup-function 
+// (registering the class with pd)
+// a static copy of this class is created at runtime, to actually do the setup-call
+///////////////////////////////////////////////////////////////////////////////
+#ifdef NO_AUTO_REGISTER_CLASS
+// if NO_AUTO_REGISTER_CLASS is defined, we will not register the class
+# define AUTO_REGISTER_CLASS(NEW_CLASS)
+#else
+// for debugging we can show the which classes are auto-registering
+# if 0
+#  define POST_AUTOREGISTER(NEW_CLASS) post("auto-registering: "#NEW_CLASS)
+# else
+#  define POST_AUTOREGISTER(NEW_CLASS)
+# endif
+# define AUTO_REGISTER_CLASS(NEW_CLASS)			\
+  class NEW_CLASS ## _cppclass {					\
+  public:								\
+  NEW_CLASS ## _cppclass() {POST_AUTOREGISTER(NEW_CLASS); NEW_CLASS ## _setup(); } \
+};									\
+  static NEW_CLASS ## _cppclass NEW_CLASS ## _instance;
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// setting the help-symbol
+///////////////////////////////////////////////////////////////////////////////
+#ifndef HELPSYMBOL_BASE
+# define HELPSYMBOL_BASE ""
+#endif
+
+#ifdef HELPSYMBOL
+# define SET_HELPSYMBOL(NEW_CLASS)				\
+  class_sethelpsymbol(NEW_CLASS ## _class, gensym(HELPSYMBOL_BASE HELPSYMBOL))
+#else 
+# define SET_HELPSYMBOL(NEW_CLASS)
+#endif /* HELPSYMBOL */
+
+
+///////////////////////////////////////////////////////////////////////////////
+// setting the class-flags
+///////////////////////////////////////////////////////////////////////////////
+#ifndef GEM_CLASSFLAGS
+# define GEM_CLASSFLAGS 0
+#endif
+///////////////////////////////////////////////////////////////////////////////
+// no args
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW(NEW_CLASS)        \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS ()                              \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                    \
+    obj->data = new NEW_CLASS;                                  \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}                                                               \
+  extern "C" {                                                  \
+    void NEW_CLASS ## _setup()                          \
+    {                                                           \
+      NEW_CLASS ## _class = class_new(                     \
+                                           gensym(#NEW_CLASS),  \
+                                           (t_newmethod)create_ ## NEW_CLASS, \
+                                           (t_method)&NEW_CLASS::obj_freeCallback, \
+                                           sizeof(Obj_header), GEM_CLASSFLAGS, \
+                                           A_NULL);                     \
+      SET_HELPSYMBOL(NEW_CLASS);                           \
+      NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);      \
+    }                                                                   \
+  }                                                                     \
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+
+///////////////////////////////////////////////////////////////////////////////
+// one arg
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_ARG(NEW_CLASS, VAR_TYPE, PD_TYPE) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (VAR_TYPE arg)                  \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                    \
+    obj->data = new NEW_CLASS(arg);                             \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	PD_TYPE,                                        \
+    	     	A_NULL);      	    	    	    	    	\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+///////////////////////////////////////////////////////////////////////////////
+// gimme arg
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_GIMME(NEW_CLASS) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (t_symbol *s, int argc, t_atom *argv) \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)s->s_name;                     \
+    obj->data = new NEW_CLASS(argc, argv);                      \
+    CPPExtern::m_holder=NULL;                                   \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	A_GIMME,                                        \
+    	     	A_NULL);      	    	    	    	    	\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+///////////////////////////////////////////////////////////////////////////////
+// two args
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_ARG_ARG(NEW_CLASS, ONE_VAR_TYPE, ONE_PD_TYPE, TWO_VAR_TYPE, TWO_PD_TYPE) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (ONE_VAR_TYPE arg, TWO_VAR_TYPE argtwo) \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                    \
+    obj->data = new NEW_CLASS(arg, argtwo);                     \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	ONE_PD_TYPE, TWO_PD_TYPE,                       \
+    	     	A_NULL);      	    	    	    	    	\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+///////////////////////////////////////////////////////////////////////////////
+// three args
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_ARG_ARG_ARG(NEW_CLASS, ONE_VAR_TYPE, ONE_PD_TYPE, TWO_VAR_TYPE, TWO_PD_TYPE, THREE_VAR_TYPE, THREE_PD_TYPE) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (ONE_VAR_TYPE arg, TWO_VAR_TYPE argtwo, THREE_VAR_TYPE argthree) \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                    \
+    obj->data = new NEW_CLASS(arg, argtwo, argthree);           \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	ONE_PD_TYPE, TWO_PD_TYPE, THREE_PD_TYPE,        \
+    	     	A_NULL);      	    	    	    	    	\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+///////////////////////////////////////////////////////////////////////////////
+// four args
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_ARG_ARG_ARG_ARG(NEW_CLASS, ONE_VAR_TYPE, ONE_PD_TYPE, TWO_VAR_TYPE, TWO_PD_TYPE, THREE_VAR_TYPE, THREE_PD_TYPE, FOUR_VAR_TYPE, FOUR_PD_TYPE) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (ONE_VAR_TYPE arg, TWO_VAR_TYPE argtwo, THREE_VAR_TYPE argthree, FOUR_VAR_TYPE argfour) \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                    \
+    obj->data = new NEW_CLASS(arg, argtwo, argthree, argfour);  \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	ONE_PD_TYPE, TWO_PD_TYPE, THREE_PD_TYPE, FOUR_PD_TYPE,	\
+    	     	A_NULL);						\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+///////////////////////////////////////////////////////////////////////////////
+// five args
+///////////////////////////////////////////////////////////////////////////////
+#define REAL_NEW_WITH_ARG_ARG_ARG_ARG_ARG(NEW_CLASS, ONE_VAR_TYPE, ONE_PD_TYPE, TWO_VAR_TYPE, TWO_PD_TYPE, THREE_VAR_TYPE, THREE_PD_TYPE, FOUR_VAR_TYPE, FOUR_PD_TYPE, FIVE_VAR_TYPE, FIVE_PD_TYPE) \
+STATIC_CLASS t_class * NEW_CLASS ## _class;    	    	    	\
+static void* create_ ## NEW_CLASS (ONE_VAR_TYPE arg, TWO_VAR_TYPE argtwo, THREE_VAR_TYPE argthree, FOUR_VAR_TYPE argfour, FIVE_VAR_TYPE argfive) \
+{     	    	    	    	    	    	    	    	\
+  try{	    	    	    	    	    	    	    	\
+    Obj_header *obj = new (pd_new(NEW_CLASS ## _class),(void *)NULL) Obj_header; \
+    CPPExtern::m_holder = &obj->pd_obj;                         \
+    CPPExtern::m_holdname=(char*)#NEW_CLASS;                            \
+    obj->data = new NEW_CLASS(arg, argtwo, argthree, argfour, argfive);  \
+    CPPExtern::m_holder = NULL;                                 \
+    CPPExtern::m_holdname=NULL;                                 \
+    return(obj);                                                \
+  } catch (GemException e) {e.report(); return NULL;}           \
+}   	    	    	    	    	    	    	    	\
+extern "C" {	    	    	    	    	    	    	\
+void NEW_CLASS ## _setup()    	    	    	    	\
+{   	    	    	    	    	    	    	    	\
+  if(!checkGemVersion(GEM_VERSION_MAJOR, GEM_VERSION_MINOR)) { \
+    ::error("[%s] will not be available", #NEW_CLASS);	       \
+    return;}						       \
+    NEW_CLASS ## _class = class_new(                       \
+    	     	gensym(#NEW_CLASS), 	    	    	    	\
+    	    	(t_newmethod)create_ ## NEW_CLASS,	    	\
+    	    	(t_method)&NEW_CLASS::obj_freeCallback,         \
+    	     	sizeof(Obj_header), GEM_CLASSFLAGS,             \
+    	     	ONE_PD_TYPE, TWO_PD_TYPE, THREE_PD_TYPE, FOUR_PD_TYPE, FIVE_PD_TYPE,	\
+    	     	A_NULL);						\
+    SET_HELPSYMBOL(NEW_CLASS);				\
+    NEW_CLASS::real_obj_setupCallback(NEW_CLASS ## _class);	\
+ }									\
+}									\
+  AUTO_REGISTER_CLASS(NEW_CLASS);
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemBase.h b/externals/gridflow/bundled/Base/GemBase.h
new file mode 100644
index 00000000..a5ae3d1e
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemBase.h
@@ -0,0 +1,133 @@
+/*-----------------------------------------------------------------
+  LOG
+  GEM - Graphics Environment for Multimedia
+
+  The base class for all of the gem objects
+
+  Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+  Copyright (c) Günther Geiger.
+  Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM
+  For information on usage and redistribution, and for a DISCLAIMER OF ALL
+  WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+	
+  -----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMBASE_H_
+#define INCLUDE_GEMBASE_H_
+
+#include "Base/GemGL.h"
+
+#include "Base/CPPExtern.h"
+#include "Base/GemState.h"
+
+class GemCache;
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  GemBase
+    
+  Base class for gem objects
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN GemBase : public CPPExtern
+{
+ protected:
+    	
+  //////////
+  // Constructor
+  GemBase();
+    	
+  //////////
+  // Destructor
+  virtual     	~GemBase();
+
+  //////////
+  virtual void 	render(GemState *state) = 0;
+
+  //////////
+  void    continueRender(GemState *state);
+
+  //////////
+  // After objects below you in the chain have finished.
+  // You should reset all GEM/OpenGL states here.
+  virtual void 	postrender(GemState *)              { ; }
+
+  //////////
+  // Called when rendering stops
+
+#if 1/*(jmz) this seems to be for gem2pdp*/
+  virtual void 	stoprender()			{ realStopRendering(); }
+#endif
+
+  //////////
+  // If you care about the start of rendering
+  virtual void	startRendering()                    { ; }
+
+  //////////
+  // If you care about the stop of rendering
+  virtual void	stopRendering()    	                { ; }
+
+
+  //////////
+  // has rendering started ?
+  bool            gem_amRendering;
+    	
+  //////////
+  // If anything in the object has changed
+  virtual void  	setModified();
+
+  //////////
+  // Don't mess with this unless you know what you are doing.
+  GemCache    	*m_cache;
+  //////////
+  // check whether this object has changed
+  bool             m_modified;
+
+  //////////
+  // The outlet
+  t_outlet    	*m_out1;
+
+
+  //////////
+  // this gets called in the before the startRendering() routine
+  // if it returns TRUE, the object's startRendering(), render() and stopRendering() functions will be called
+  // it it returns FALSE, the object will be disabled 
+  // when rendering is restarted, this function get's called again
+  // the default is to enable rendering
+  // this function is important if you want to disable an object because it cannot be used (e.g. missing driver support)
+  virtual bool isRunnable(void);
+
+  //////////
+  // creation callback
+  static void 	real_obj_setupCallback(t_class *classPtr)
+    { CPPExtern::real_obj_setupCallback(classPtr); GemBase::obj_setupCallback(classPtr); }
+
+    	
+ private:
+    
+  void	    	realStopRendering();
+  void            gem_startstopMess(int state);
+  void            gem_renderMess(GemCache* state, GemState* state2);
+  	    	
+  static inline GemBase *GetMyClass(void *data) {return((GemBase *)((Obj_header *)data)->data);}
+
+  friend class    gemhead;
+  static void 	obj_setupCallback(t_class *classPtr);
+  static void 	gem_MessCallback(void *, t_symbol *,int, t_atom*);
+  static void 	renderCallback(GemBase *data, GemState *state);
+  static void 	postrenderCallback(GemBase *data, GemState *state);
+#if 1 /*jmz this seems to be for gem2pdp*/
+  static void	stoprenderCallback(GemBase *data);	//DH
+#endif
+
+  /* whether the object is internally disabled or not 
+   * objects are to be disabled, if the system cannot make use of them, e.g. because of unsupported openGL features
+   */
+  bool  m_enabled;
+
+};
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemCache.h b/externals/gridflow/bundled/Base/GemCache.h
new file mode 100644
index 00000000..bf6c1e0f
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemCache.h
@@ -0,0 +1,69 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    The state to pass among GEM objects
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMCACHE_H_
+#define INCLUDE_GEMCACHE_H_
+
+#include "Base/GemExportDef.h"
+
+class gemhead;
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemCache
+    
+    The cache to pass among GEM objects
+
+DESCRIPTION
+    
+-----------------------------------------------------------------*/
+#define GEMCACHE_MAGIC 0x1234567
+class GEM_EXTERN GemCache
+{
+    public:
+    
+    	//////////
+        // Constructor
+    	GemCache(gemhead *parent);
+    	
+        //////////
+        // Destructor
+        ~GemCache();
+
+    	//////////
+    	// Was a modification made which will void a display list?
+    	int 	    	    dirty;
+    	
+    	//////////
+    	// Should the image be resent?
+    	int 	    	    resendImage;
+
+    	//////////
+    	// has the Vertex-Array changed?
+    	int 	    	    vertexDirty;
+
+		//////////
+		// re-set (like creation, but without instantiating
+		void reset(gemhead*parent);
+
+        //////////
+    	gemhead     	    *m_parent;
+
+	//////////
+	// indicates a valid cache
+	int m_magic;
+};
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemEvent.h b/externals/gridflow/bundled/Base/GemEvent.h
new file mode 100644
index 00000000..a7ce1f48
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemEvent.h
@@ -0,0 +1,156 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    get keyboard/mouse/tablet callbacks
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMEVENT_H_
+#define INCLUDE_GEMEVENT_H_
+
+#include "Base/GemExportDef.h"
+//#include "Base/CPPExtern.h"
+
+//////////////////////////////////////////////////////////////////
+//
+// Mouse motion callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*MOTION_CB)(int, int, void *);
+//////////
+// Set a mouse motion callback
+GEM_EXTERN extern void setMotionCallback(MOTION_CB callback, void *data);
+
+//////////
+// Remove a mouse motion callback
+GEM_EXTERN extern void removeMotionCallback(MOTION_CB callback, void *data);
+
+
+//////////////////////////////////////////////////////////////////
+//
+// Mouse button callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*BUTTON_CB)(int, int, int, int, void *);
+//////////
+// Set a button callback
+// which == 0 == left
+// which == 1 == middle
+// which == 2 == right
+GEM_EXTERN extern void setButtonCallback(BUTTON_CB callback, void *data);
+
+//////////
+// Remove a button callback
+GEM_EXTERN extern void removeButtonCallback(BUTTON_CB callback, void *data);
+
+
+//////////////////////////////////////////////////////////////////
+//
+// Mouse wheel callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*WHEEL_CB)(int, int, void *);
+//////////
+// Set a wheel callback
+GEM_EXTERN extern void setWheelCallback(WHEEL_CB callback, void *data);
+
+//////////
+// Remove a wheel callback
+GEM_EXTERN extern void removeWheelCallback(WHEEL_CB callback, void *data);
+
+
+//////////////////////////////////////////////////////////////////
+//
+// Tablet motion callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*TABMOTION_CB)(int, int, float, void *);
+//////////
+// Set a tablet motion callback
+GEM_EXTERN extern void setTabletMotionCallback(TABMOTION_CB callback, void *data);
+
+//////////
+// Remove a tablet motion callback
+GEM_EXTERN extern void removeTabletMotionCallback(TABMOTION_CB callback, void *data);
+
+
+//////////////////////////////////////////////////////////////////
+//
+// Tablet rotation callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*TABROTATION_CB)(int, int, int, void *);
+//////////
+// Set a tablet rotation callback
+GEM_EXTERN extern void setTabletRotationCallback(TABROTATION_CB callback, void *data);
+
+//////////
+// Remove a tablet rotation callback
+GEM_EXTERN extern void removeTabletRotationCallback(TABROTATION_CB callback, void *data);
+
+
+//////////////////////////////////////////////////////////////////
+//
+// Tablet button callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*TABBUTTON_CB)(int, int, int, int, void *);
+//////////
+// Set a tablet button callback
+// which == 0 == left
+// which == 1 == middle
+// which == 2 == right
+GEM_EXTERN extern void setTabletButtonCallback(TABBUTTON_CB callback, void *data);
+
+//////////
+// Remove a tablet button callback
+GEM_EXTERN extern void removeTabletButtonCallback(TABBUTTON_CB callback, void *data);
+
+//////////////////////////////////////////////////////////////////
+//
+// Keyboard callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*KEYBOARD_CB)(char *,int, int, void *);
+//////////
+// Set a keyboard callback
+GEM_EXTERN extern void setKeyboardCallback(KEYBOARD_CB callback, void *data);
+
+//////////
+// Remove a keyboard callback
+GEM_EXTERN extern void removeKeyboardCallback(KEYBOARD_CB callback, void *data);
+
+//////////////////////////////////////////////////////////////////
+//
+// Resize callback
+//
+//////////////////////////////////////////////////////////////////
+typedef void (*RESIZE_CB)(int, int, void *);
+//////////
+// Set a resize callback
+GEM_EXTERN extern void setResizeCallback(RESIZE_CB callback, void *data);
+
+//////////
+// Remove a resize callback
+GEM_EXTERN extern void removeResizeCallback(RESIZE_CB callback, void *data);
+
+//////////
+// Trigger an event
+GEM_EXTERN extern void triggerMotionEvent(int x, int y);
+GEM_EXTERN extern void triggerButtonEvent(int which, int state, int x, int y);
+GEM_EXTERN extern void triggerWheelEvent(int axis, int value);
+GEM_EXTERN extern void triggerTabletMotionEvent(int x, int y, float pressure);
+GEM_EXTERN extern void triggerTabletRotationEvent(int az, int alt, int twist);
+GEM_EXTERN extern void triggerTabletButtonEvent(int which, int state, int x, int y);
+GEM_EXTERN extern void triggerKeyboardEvent(char *string, int value, int state);
+GEM_EXTERN extern void triggerResizeEvent(int xSize, int ySize);
+
+#endif  // for header file
+
diff --git a/externals/gridflow/bundled/Base/GemExportDef.h b/externals/gridflow/bundled/Base/GemExportDef.h
new file mode 100644
index 00000000..26b07655
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemExportDef.h
@@ -0,0 +1,40 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+	Export crap
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMEXPORTDEF_H_
+#define INCLUDE_GEMEXPORTDEF_H_
+
+#ifdef _MSC_VER
+
+/* turn of some warnings on vc-compilers */
+# pragma warning( disable : 4244 )
+# pragma warning( disable : 4305 )
+# pragma warning( disable : 4091 )
+// "switch" without "case" (just "default")
+# pragma warning( disable : 4065 )
+
+// Windows requires explicit import and exporting of functions and classes.
+// While this is a pain to do sometimes, in large software development
+//      projects, it is very usefull.
+#ifdef GEM_INTERNAL     // GEM exporting things
+#define GEM_EXTERN __declspec(dllexport)
+#else                   // other's importing
+#define GEM_EXTERN __declspec(dllimport)
+#endif                  // for GEM_INTERNAL
+
+#else                   // other OS's
+#define GEM_EXTERN
+#endif
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemFuncUtil.h b/externals/gridflow/bundled/Base/GemFuncUtil.h
new file mode 100644
index 00000000..70a28f51
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemFuncUtil.h
@@ -0,0 +1,362 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    GemFuncUtil.h
+       - contains functions for graphics
+       - part of GEM
+
+    Copyright (c) 1997-2000 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMFUNCUTIL_H_
+#define INCLUDE_GEMFUNCUTIL_H_
+
+#ifdef __APPLE__
+#include <Carbon/Carbon.h>
+#endif
+
+#include "Base/GemExportDef.h"
+
+/* this should be included for ALL platforms:
+ * should we define __MMX__ for windows in there ?
+ */
+#include "config.h"
+#include "GemSIMD.h"
+#include "GemMath.h"
+
+
+// for rand()
+#include <stdlib.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// powerOfTwo
+// get the next higher 2^n-number (if value is'nt 2^n by itself)
+///////////////////////////////////////////////////////////////////////////////
+inline int powerOfTwo(int value)
+{
+/*
+    int x = 1;
+    //    while(x <= value) x <<= 1;
+    while(x < value) x <<= 1;
+    return(x);
+*/
+// optimization from "Hacker's Delight"
+// - above loop executes in 4n+3 instructions, where n is the power of 2 of returned int
+// - below code is branch-free and only 12 instructions!
+	value = value - 1;
+	value = value | (value >> 1);
+	value = value | (value >> 2);
+	value = value | (value >> 4);
+	value = value | (value >> 8);
+	value = value | (value >> 16);
+	return (value + 1);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// min/max functions
+//
+///////////////////////////////////////////////////////////////////////////////
+#ifndef MIN
+inline int MIN(int x, int y) {  return (x<y)?x:y; }
+inline float MIN(float x, float y) {  return (x<y)?x:y; }
+#endif
+#ifndef MAX
+inline int MAX(int x, int y) {  return (x>y)?x:y; }
+inline float MAX(float x, float y) {  return (x>y)?x:y; }
+#endif
+
+inline unsigned char TRI_MAX(unsigned char v1, unsigned char v2, unsigned char v3){
+  if (v1 > v2 && v1 > v3) return(v1);
+  if (v2 > v3) return(v2);
+  return(v3);
+}
+inline unsigned char TRI_MIN(unsigned char v1, unsigned char v2, unsigned char v3){
+  if (v1 < v2 && v1 < v3) return(v1);
+  if (v2 < v3) return(v2);
+  return(v3);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Clamp functions
+//
+///////////////////////////////////////////////////////////////////////////////
+//////////
+// Clamp a value high
+inline unsigned char CLAMP_HIGH(int x)
+	{ return((unsigned char )((x > 255) ? 255 : x)); }
+
+//////////
+// Clamp a value low
+inline unsigned char CLAMP_LOW(int x)
+	{ return((unsigned char )((x < 0) ? 0 : x)); }
+
+//////////
+// Clamp an int to the range of an unsigned char
+inline unsigned char CLAMP(int x)
+    { return((unsigned char)((x > 255) ? 255 : ( (x < 0) ? 0 : x))); }
+
+//////////
+// Clamp a float to the range of an unsigned char
+inline unsigned char CLAMP(float x)
+    { return((unsigned char)((x > 255.f) ? 255.f : ( (x < 0.f) ? 0.f : x))); }
+
+//////////
+// Clamp a float to 0. <= x <= 1.0
+inline float FLOAT_CLAMP(float x)
+    { return((x > 1.f) ? 1.f : ( (x < 0.f) ? 0.f : x)); }
+
+/////////
+// Clamp the Y channel of YUV (16%235)
+inline unsigned char CLAMP_Y(int x)
+    { return((unsigned char)((x > 235) ? 235 : ( (x < 16) ? 16 : x))); }
+
+///////////////////////////////////////////////////////////////////////////////
+// Multiply and interpolation
+//
+///////////////////////////////////////////////////////////////////////////////
+//////////
+// Exactly multiply two unsigned chars
+// This avoids a float value (important on Intel...)
+// From Alvy Ray Smith paper
+inline unsigned char INT_MULT(unsigned int a, unsigned int b)
+	{ int t = (unsigned int)a * (unsigned int)b + 0x80;
+      return((unsigned char)(((t >> 8) + t) >> 8)); }
+
+//////////
+// Exactly LERPs two values
+// This avoids a float value (important on Intel...)
+// From Alvy Ray Smith paper
+inline unsigned char INT_LERP(unsigned int p, unsigned int q, unsigned int a)
+	{ return((unsigned char)(p + INT_MULT(a, q - p))); }
+
+//////////
+// Floating point LERP
+inline float FLOAT_LERP(float p, float q, float a)
+	{ return( a * (q - p) + p); }
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Step function
+//
+///////////////////////////////////////////////////////////////////////////////
+inline int stepFunc(float x, float a)
+    { return(x >= a); }
+inline int stepFunc(int x, int a)
+    { return(x >= a); }
+inline int stepFunc(unsigned char x, unsigned char a)
+    { return(x >= a); }
+
+///////////////////////////////////////////////////////////////////////////////
+// Pulse function
+//
+///////////////////////////////////////////////////////////////////////////////
+inline int pulseFunc(float x, float a, float b)
+    { return(stepFunc(a, x) - stepFunc(b, x)); }
+inline int pulseFunc(int x, int a, int b)
+    { return(stepFunc(a, x) - stepFunc(b, x)); }
+inline int pulseFunc(unsigned char x, unsigned char a, unsigned char b)
+    { return(stepFunc(a, x) - stepFunc(b, x)); }
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Clamp function
+//
+///////////////////////////////////////////////////////////////////////////////
+inline float clampFunc(float x, float a, float b)
+    { return(x < a ? a : (x > b ? b : x)); }
+inline int clampFunc(int x, int a, int b)
+    { return(x < a ? a : (x > b ? b : x)); }
+inline unsigned char clampFunc(unsigned char x, unsigned char a, unsigned char b)
+    { return(x < a ? a : (x > b ? b : x)); }
+inline void* clampFunc(void* x, void* a, void* b)
+    { return(x < a ? a : (x > b ? b : x)); }
+/* 
+   inline int GateInt(int nValue,int nMin,int nMax)
+   inline float GateFlt(float nValue,float nMin,float nMax)
+   inline void* GatePtr(void* pValue,void* pMin,void* pMax)
+*/
+
+
+///////////////////////////////////////////////////////////////////////////////
+// absolute integer
+//
+///////////////////////////////////////////////////////////////////////////////
+inline int AbsInt(int inValue)         { return (inValue>0)?inValue:-inValue; }
+static inline int GetSign(int inValue) { return (inValue<0)?-1:1;             }
+
+///////////////////////////////////////////////////////////////////////////////
+// wrapping functions for integers
+//
+///////////////////////////////////////////////////////////////////////////////
+
+inline int GetTiled(int inValue,const int nMax) {
+  int nOutValue=(inValue%nMax);
+  if (nOutValue<0)nOutValue=((nMax-1)+nOutValue);
+  return nOutValue;
+}
+
+inline int GetMirrored(int inValue,const int nMax) {
+  const int nTwoMax=(nMax*2);
+  int nOutValue=GetTiled(inValue,nTwoMax);
+  if (nOutValue>=nMax)nOutValue=((nTwoMax-1)-nOutValue);
+  return nOutValue;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// 2D-algebra
+//    
+///////////////////////////////////////////////////////////////////////////////
+static inline void Get2dTangent(float inX,float inY,float* poutX,float* poutY) {
+	*poutX=inY;
+	*poutY=-inX;
+}
+///////////////////////////////////////////////////////////////////////////////
+// 2D-dot product
+///////////////////////////////////////////////////////////////////////////////
+static inline float Dot2d(float Ax,float Ay,float Bx,float By) {
+	return ((Ax*Bx)+(Ay*By));
+}
+///////////////////////////////////////////////////////////////////////////////
+// 2D-vector normalization
+///////////////////////////////////////////////////////////////////////////////
+static inline void Normalise2d(float* pX,float* pY) {
+	const float MagSqr=Dot2d(*pX,*pY,*pX,*pY);
+	float Magnitude=(float)sqrt(MagSqr);
+	if (Magnitude<=0.0f) {
+		Magnitude=0.001f;
+	}
+	const float RecipMag=1.0f/Magnitude;
+
+	*pX*=RecipMag;
+	*pY*=RecipMag;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// higher algebra
+//
+///////////////////////////////////////////////////////////////////////////////
+inline float GetRandomFloat(void) {
+  return rand()/static_cast<float>(RAND_MAX);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Smooth step function (3x^2 - 2x^3)
+//
+///////////////////////////////////////////////////////////////////////////////
+GEM_EXTERN extern float         smoothStep(float x, float a, float b);
+GEM_EXTERN extern int           smoothStep(int x, int a, int b);
+GEM_EXTERN extern unsigned char smoothStep(unsigned char x, unsigned char a, unsigned char b);
+
+///////////////////////////////////////////////////////////////////////////////
+// Bias function
+//
+// Remap unit interval (curve)
+// If a == 0.5, then is linear mapping.
+///////////////////////////////////////////////////////////////////////////////
+GEM_EXTERN extern float biasFunc(float x, float a);
+
+///////////////////////////////////////////////////////////////////////////////
+// Gain function
+//
+// Remap unit interval (S-curve)
+// Will always return 0.5 when x is 0.5
+// If a == 0.5, then is linear mapping.
+///////////////////////////////////////////////////////////////////////////////
+GEM_EXTERN extern float gainFunc(float x, float a);
+
+///////////////////////////////////////////////////////////////////////////////
+// Linear function
+//
+// val should be 0 <= val <= 1.
+// ret should point at a float of enough dimensions to hold the returned value
+//      For instance, numDimen == 2, should have a ret[2]
+// numDimen is the number of dimensions to compute
+// npnts is the number of points per dimension.
+//
+///////////////////////////////////////////////////////////////////////////////
+GEM_EXTERN extern void linearFunc(float val, float *ret, int numDimen, int npnts, float *pnts);
+
+///////////////////////////////////////////////////////////////////////////////
+// Spline function
+//
+// val should be 0 <= val <= 1.
+// ret should point at a float of enough dimensions to hold the returned value
+//      For instance, numDimen == 2, should have a ret[2]
+// numDimen is the number of dimensions to compute
+// nknots is the number of knots per dimension.
+//      There must be at least four knots!
+//
+// Thanks to
+//      _Texturing and Modeling: A Procedural Approach_
+//          David S. Ebert, Ed.
+///////////////////////////////////////////////////////////////////////////////
+GEM_EXTERN extern void splineFunc(float val, float *ret, int numDimen, int nknots, float *knot);
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Pixel access functions
+//
+///////////////////////////////////////////////////////////////////////////////
+//
+// Accelerated Pixel Manipulations 
+// This is sort on a vector operation on 8 chars at the same time .... could be
+// implemented in MMX
+// Alpha channel is not added !! (would be nr 3 and 7)
+
+#define ADD8_NOALPHA(a,b) \
+ ((unsigned char*)(a))[0] = CLAMP_HIGH((int)((unsigned char*)(a))[0] + ((unsigned char*)(b))[0]);\
+ ((unsigned char*)(a))[1] = CLAMP_HIGH((int)((unsigned char*)(a))[1] + ((unsigned char*)(b))[1]);\
+ ((unsigned char*)(a))[2] = CLAMP_HIGH((int)((unsigned char*)(a))[2] + ((unsigned char*)(b))[2]);\
+ ((unsigned char*)(a))[4] = CLAMP_HIGH((int)((unsigned char*)(a))[4] + ((unsigned char*)(b))[4]);\
+ ((unsigned char*)(a))[5] = CLAMP_HIGH((int)((unsigned char*)(a))[5] + ((unsigned char*)(b))[5]);\
+ ((unsigned char*)(a))[6] = CLAMP_HIGH((int)((unsigned char*)(a))[6] + ((unsigned char*)(b))[6]);\
+
+#define SUB8_NOALPHA(a,b) \
+ ((unsigned char*)(a))[0] = CLAMP_LOW((int)((unsigned char*)(a))[0] - ((unsigned char*)(b))[0]);\
+ ((unsigned char*)(a))[1] = CLAMP_LOW((int)((unsigned char*)(a))[1] - ((unsigned char*)(b))[1]);\
+ ((unsigned char*)(a))[2] = CLAMP_LOW((int)((unsigned char*)(a))[2] - ((unsigned char*)(b))[2]);\
+ ((unsigned char*)(a))[4] = CLAMP_LOW((int)((unsigned char*)(a))[4] - ((unsigned char*)(b))[4]);\
+ ((unsigned char*)(a))[5] = CLAMP_LOW((int)((unsigned char*)(a))[5] - ((unsigned char*)(b))[5]);\
+ ((unsigned char*)(a))[6] = CLAMP_LOW((int)((unsigned char*)(a))[6] - ((unsigned char*)(b))[6]);\
+
+#define ADD8(a,b) \
+ ((unsigned char*)(a))[0] = CLAMP_HIGH((int)((unsigned char*)(a))[0] + ((unsigned char*)(b))[0]);\
+ ((unsigned char*)(a))[1] = CLAMP_HIGH((int)((unsigned char*)(a))[1] + ((unsigned char*)(b))[1]);\
+ ((unsigned char*)(a))[2] = CLAMP_HIGH((int)((unsigned char*)(a))[2] + ((unsigned char*)(b))[2]);\
+ ((unsigned char*)(a))[3] = CLAMP_HIGH((int)((unsigned char*)(a))[3] + ((unsigned char*)(b))[3]);\
+ ((unsigned char*)(a))[4] = CLAMP_HIGH((int)((unsigned char*)(a))[4] + ((unsigned char*)(b))[4]);\
+ ((unsigned char*)(a))[5] = CLAMP_HIGH((int)((unsigned char*)(a))[5] + ((unsigned char*)(b))[5]);\
+ ((unsigned char*)(a))[6] = CLAMP_HIGH((int)((unsigned char*)(a))[6] + ((unsigned char*)(b))[6]);\
+ ((unsigned char*)(a))[7] = CLAMP_HIGH((int)((unsigned char*)(a))[7] + ((unsigned char*)(b))[7]);\
+
+#define SUB8(a,b) \
+ ((unsigned char*)(a))[0] = CLAMP_LOW((int)((unsigned char*)(a))[0] - ((unsigned char*)(b))[0]);\
+ ((unsigned char*)(a))[1] = CLAMP_LOW((int)((unsigned char*)(a))[1] - ((unsigned char*)(b))[1]);\
+ ((unsigned char*)(a))[2] = CLAMP_LOW((int)((unsigned char*)(a))[2] - ((unsigned char*)(b))[2]);\
+ ((unsigned char*)(a))[3] = CLAMP_LOW((int)((unsigned char*)(a))[3] - ((unsigned char*)(b))[3]);\
+ ((unsigned char*)(a))[4] = CLAMP_LOW((int)((unsigned char*)(a))[4] - ((unsigned char*)(b))[4]);\
+ ((unsigned char*)(a))[5] = CLAMP_LOW((int)((unsigned char*)(a))[5] - ((unsigned char*)(b))[5]);\
+ ((unsigned char*)(a))[6] = CLAMP_LOW((int)((unsigned char*)(a))[6] - ((unsigned char*)(b))[6]);\
+ ((unsigned char*)(a))[7] = CLAMP_LOW((int)((unsigned char*)(a))[7] - ((unsigned char*)(b))[7]);\
+
+
+
+#ifdef __APPLE__
+//Ian Ollman's function to determine the cache prefetch for altivec vec_dst()
+inline UInt32 GetPrefetchConstant( int blockSizeInVectors, int blockCount, int blockStride )
+{
+	return ((blockSizeInVectors << 24) & 0x1F000000) | ((blockCount << 16) & 0x00FF0000) | (blockStride & 0xFFFF);
+} 
+#endif
+
+
+#endif  // for header file
+
diff --git a/externals/gridflow/bundled/Base/GemGL.h b/externals/gridflow/bundled/Base/GemGL.h
new file mode 100644
index 00000000..24d6fe99
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemGL.h
@@ -0,0 +1,72 @@
+/*
+ * GemGL: openGL includes for GEM
+ *
+ * include this file if you want to include the
+ * openGL-headers installed on your system
+ *
+ * tasks:
+ *
+ * + this file hides the peculiarities of the various platforms
+ *   (like "OpenGL/gl.h" vs "GL/gl.h")
+ *
+ * + define some pre-processor defines that are missing in the GL-headers
+ *
+ * + try to exclude parts of the GL-headers based on config.h
+ *
+ */
+
+
+#ifndef INCLUDE_GEMGL_H_
+#define INCLUDE_GEMGL_H_
+
+#include "config.h"
+
+// I hate Microsoft...I shouldn't have to do this!
+#ifdef __WIN32__
+# include <windows.h>
+#endif
+
+#define GLEW_STATIC
+//#include "Base/glew.h"
+#ifdef __APPLE__
+typedef   signed long GLint;
+typedef unsigned long GLenum;
+#else
+typedef   signed int GLint;
+typedef unsigned int GLenum;
+#endif
+typedef float GLfloat;
+typedef unsigned char GLboolean;
+#define GL_RGBA_MODE     0x0C31
+#define GL_UNSIGNED_BYTE 0x1401
+#define GL_RGBA          0x1908
+
+
+#ifdef __APPLE__
+# include <OpenGL/OpenGL.h>
+#elif defined __WIN32__
+# include "Base/wglew.h"
+#elif defined __linux__
+
+#endif /* OS */
+
+#ifndef GL_YUV422_GEM
+# define GL_YCBCR_422_GEM GL_YCBCR_422_APPLE
+# define GL_YUV422_GEM GL_YCBCR_422_GEM
+#endif /* GL_YUV422_GEM */
+
+
+#ifndef GL_RGBA_GEM
+# ifdef __APPLE__
+#  define GL_RGBA_GEM GL_BGRA_EXT
+# else
+#  define GL_RGBA_GEM GL_RGBA
+# endif
+#endif /* GL_RGBA_GEM */
+
+/* default draw-style */
+#ifndef GL_DEFAULT_GEM
+# define GL_DEFAULT_GEM 0xFFFF
+#endif
+
+#endif /* INCLUDE_GEMGL_H_ */
diff --git a/externals/gridflow/bundled/Base/GemGLUtil.h b/externals/gridflow/bundled/Base/GemGLUtil.h
new file mode 100644
index 00000000..9c5402f9
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemGLUtil.h
@@ -0,0 +1,29 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    GemGLUtil.h
+       - contains functions for graphics
+       - part of GEM
+
+    Copyright (c) 1997-2000 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMGLUTIL_H_
+#define INCLUDE_GEMGLUTIL_H_
+
+#include "Base/GemBase.h"
+#include "Base/GemExportDef.h"
+
+GEM_EXTERN extern GLenum		glReportError (void);
+GEM_EXTERN extern int           getGLdefine(char *name);
+GEM_EXTERN extern int           getGLdefine(t_symbol *name);
+GEM_EXTERN extern int           getGLdefine(t_atom *name);
+GEM_EXTERN extern int           getGLbitfield(int argc, t_atom *argv);
+#endif  // for header file
+
diff --git a/externals/gridflow/bundled/Base/GemGluObj.h b/externals/gridflow/bundled/Base/GemGluObj.h
new file mode 100644
index 00000000..524ba4b4
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemGluObj.h
@@ -0,0 +1,96 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    A Glu object
+
+    Copyright (c) 1997-2000 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMGLUOBJ_H_
+#define INCLUDE_GEMGLUOBJ_H_
+
+// I hate Microsoft...I shouldn't have to do this!
+#ifdef __WIN32__
+#include <windows.h>
+#endif
+
+#include <string.h>
+
+
+#include <math.h>
+#ifndef M_PI
+#  define M_PI (3.1415926)
+#endif
+
+#include "Base/GemShape.h"
+
+#ifndef GLU_SILHOUETTE
+# define GLU_SILHOUETTE 0
+#endif
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemGluObj
+    
+    A Glu object
+
+DESCRIPTION
+
+    Inlet for an int - "in2"
+
+    "in2" - the number of slices in the object
+        
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemGluObj : public GemShape
+{
+    public:
+    
+	    //////////
+	    // Constructor
+  GemGluObj(t_floatarg size, t_floatarg slices=10.f, t_floatarg stacks=0.f);
+    	
+    protected:
+    	
+    	//////////
+    	// Destructor
+    	virtual ~GemGluObj();
+
+    	//////////
+    	// How the object should be drawn
+    	virtual void	typeMess(t_symbol *type);
+
+    	//////////
+    	// The number of slices in the quadric
+    	void	    	numSlicesMess(int numSlices);
+    	void	    	numSlicesMess(int numSlices, int numStacks);
+
+    	//////////
+    	// The number of slices
+    	int 	    	m_numSlices, m_numStacks;
+    	
+        //////////
+        t_inlet         *m_sliceInlet;
+
+    	//////////
+    	// creation callback
+    	static void 	real_obj_setupCallback(t_class *classPtr)
+    	    { GemShape::real_obj_setupCallback(classPtr); GemGluObj::obj_setupCallback(classPtr); }
+    	
+    private:
+    
+     	static inline GemGluObj *GetMyClass(void *data) {return((GemGluObj *)((Obj_header *)data)->data);}
+
+    	//////////
+    	// Static member functions
+    	static void 	obj_setupCallback(t_class *classPtr);
+    	static void 	numSlicesMessCallback(void *data, t_symbol*, int, t_atom*);
+};
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemLoadObj.h b/externals/gridflow/bundled/Base/GemLoadObj.h
new file mode 100644
index 00000000..9e4c9625
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemLoadObj.h
@@ -0,0 +1,28 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+	- loads in an alias|wavefront model file
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMLOADOBJ_H_
+#define INCLUDE_GEMLOADOBJ_H_
+
+#include "Base/GemExportDef.h"
+
+class GemModelData;
+
+//////////
+// Load in an alias|wavefront model
+// [out] GemModel * - equals NULL if failure
+GEM_EXTERN extern GemModelData *loadWaveFrontModel(const char *filename);
+
+
+#endif
diff --git a/externals/gridflow/bundled/Base/GemMan.h b/externals/gridflow/bundled/Base/GemMan.h
new file mode 100644
index 00000000..351429be
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemMan.h
@@ -0,0 +1,257 @@
+/*-----------------------------------------------------------------
+  LOG
+  GEM - Graphics Environment for Multimedia
+
+  The base functions and structures
+  Also includes gemwin header file
+
+  Copyright (c) 1997-2000 Mark Danks.mark@danks.org
+  Copyright (c) Günther Geiger. geiger@epy.co.at
+  Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+  For information on usage and redistribution, and for a DISCLAIMER OF ALL
+  WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+  -----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMMAN_H_
+#define INCLUDE_GEMMAN_H_
+
+#include "Base/GemGL.h"
+#include "Base/GemGLUtil.h"
+
+#ifdef __APPLE__
+# include <Carbon/Carbon.h>
+# include <AGL/agl.h>
+#endif // __APPLE__
+
+#ifdef __WIN32__
+# include <QTML.h>
+# include <Movies.h>
+#endif
+
+#include "Base/GemExportDef.h"
+
+class gemhead;
+class gemheadLink;
+class GemState;
+class WindowInfo;
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  GemMan
+    
+  A static class to create windows, etc.
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN GemMan
+{
+ public:
+
+  //////////
+  // Should only be called once (usually by GemSetup)
+  static void 	    initGem(void);
+
+  //////////
+  static void 	    addObj(gemhead *obj, int priority);
+    	
+  //////////
+  static void 	    removeObj(gemhead *obj, int priority);
+
+  //////////
+  // Is there a window.
+  static int  	    windowExists(void);
+
+  //////////
+  // Are we rendering.
+  static int  	    getRenderState(void);
+
+  //////////
+  // is there a context (has its meaning under X)
+  static void         createContext(char* disp);
+  static int  	    contextExists(void);
+    	
+  //////////
+  // If an object needs to know if the window changed.
+  // This is important for display lists.
+  static int  	    windowNumber(void);
+    	
+  //////////
+  // reset to the initial state
+  static void 	    resetState(void);
+
+  //////////
+  // Just send out one frame (if double buffered, will swap buffers)
+  static void 	    render(void *);
+  static void	    renderChain(gemheadLink *head, GemState *state);
+
+    	    	
+  //////////
+  // Start a clock to do rendering.
+  static void 	    startRendering(void);
+    	
+  //////////
+  // Stop the clock to do rendering.
+  static void 	    stopRendering(void);
+    	
+  //////////
+  // Create the window with the current parameters
+  static int 	    createWindow(char* disp = 0);
+
+  //////////
+  // Destroy the window
+  static void 	    destroyWindow(void);
+  // Destroy the window after a minimal delay
+  static void 	    destroyWindowSoon(void);
+	
+  //////////
+  // Swap the buffers.
+  // If single buffered, just clears the window
+  static void	    swapBuffers(void);
+
+  //////////
+  // Set the frame rate
+  static void 	    frameRate(float framespersecond);
+  //////////
+  // Get the frame rate
+  static float 	    getFramerate(void);
+
+  static int 	    getProfileLevel(void);
+
+  static void getDimen(int*width, int*height);
+  static void getRealDimen(int*width, int*height);
+  static void getOffset(int*x, int*y);
+      
+  //////////
+  // Turn on/off lighting
+  static void 	    lightingOnOff(int state);
+    	
+  //////////
+  // Turn on/off cursor
+  static void         cursorOnOff(int state);
+  
+  //////////
+  // Turn on/off topmost position
+  static void         topmostOnOff(int state);
+
+
+  //////////
+  // Request a lighting value - it is yours until you free it.
+  // The return can be 0, in which there are too many lights
+  // [in] specific - If you want a specific light.  == 0 means that you don't care.
+  static GLenum	    requestLight(int specific = 0);
+    	
+  //////////
+  // Free a lighting value
+  static void 	    freeLight(GLenum lightNum);
+    	
+  //////////
+  // Print out information
+  static void 	    printInfo(void);
+
+  //////////
+  static void 	    fillGemState(GemState &);
+
+  static int	   texture_rectangle_supported;
+  static int	   client_storage_supported;
+  static int	   texture_range_supported;
+  static int	   texture_yuv_supported;
+  static int       multisample_filter_hint;
+  static GLint     maxStackDepth[4]; // for push/pop of matrix-stacks
+
+
+  static float	   m_perspect[6];	// values for the perspective matrix	
+  static float	   m_lookat[9];	// values for the lookat matrix
+
+  // LATER make this private (right now it is needed in gem2pdp)
+  static int	   m_buffer;		// single(1) or double(2)
+
+ private:
+    	
+  //////////
+  // computer and window information
+  static char     *m_title;             // title to be displayed
+  static int	   m_fullscreen;	// fullscreen (1) or not (0!)
+  static int       m_menuBar;		// hide (0), show(1), hide but autoshow(-1)
+  static int	   m_secondscreen;	// set the second screen
+  static int	   m_height;		// window height
+  static int	   m_width;		// window width
+  static int	   m_w;                 // the real window width (reported by gemCreateWindow())
+  static int       m_h;                 // the real window height
+  static int	   m_xoffset;		// window offset (x)
+  static int	   m_yoffset;		// window offset (y)
+
+  static int	   m_border;		// window border
+  static int	   m_stereo;		// stereoscopic
+
+  static int	   m_profile;		// off(0), on(1), w/o image caching(2)
+  static int       m_rendering;
+
+  static float	   m_fog;			// fog density
+  enum FOG_TYPE
+    { FOG_OFF = 0, FOG_LINEAR, FOG_EXP, FOG_EXP2 };
+  static FOG_TYPE  m_fogMode;		// what kind of fog we have
+  static GLfloat   m_fogColor[4];	// colour of the fog
+  static float	   m_fogStart;		// start of the linear fog
+  static float	   m_fogEnd;		// start of the linear fog
+
+  static float     m_motionBlur;        // motion-blur factor in double-buffer mode
+
+  static float	   fps;
+  static int	   fsaa;
+  static bool      pleaseDestroy;
+#ifdef __APPLE__
+  static AGLContext masterContext;
+#endif
+	
+  //////////
+  // Changing these variables is likely to crash GEM
+  // This is current rendering window information
+  // The window is created and destroyed by the user, so
+  //		if there is no window, this will contain NULL pointers.
+  static WindowInfo   &getWindowInfo(void);
+	
+  //////////
+  // Changing these variables is likely to crash GEM
+  // This is constant rendering window information
+  // This window is always avaliable (although not visible)
+  static WindowInfo   &getConstWindowInfo(void);
+  static int 	    createConstWindow(char* disp = 0);
+
+  // gemwin is allowed to modifying "global" window attributes
+  friend class gemwin;
+    	
+  static GLfloat    m_clear_color[4];	// the frame buffer clear
+  static GLbitfield m_clear_mask;		// the clear bitmask
+  static GLfloat    m_mat_ambient[4];	// default ambient material
+  static GLfloat    m_mat_specular[4];	// default specular material
+  static GLfloat    m_mat_shininess;	// default shininess material
+      
+  static GLfloat    m_stereoSep;		// stereo seperation
+  static GLfloat    m_stereoFocal;		// distance to focal point
+  static bool	    m_stereoLine;		// draw a line between 2 stereo-screens
+      
+  static double	    m_lastRenderTime;	// the time of the last rendered frame
+      
+  // gemwin should not touch the following member variables and member functions
+  static int  	    m_windowState;
+  static int  	    m_windowNumber;
+  static int  	    m_windowContext;
+  static int        m_cursor;
+  static int        m_topmost;
+      
+  static void 	    windowInit(void);
+  static void 	    windowCleanup(void);
+  static void 	    resetValues(void);
+
+  static void resizeCallback(int xsize, int ysize, void*);
+  static void dispatchWinmessCallback(void);
+
+  //////////
+  // check for supported openGL extensions we might need
+  static void checkOpenGLExtensions(void);
+};
+
+#endif
diff --git a/externals/gridflow/bundled/Base/GemMath.h b/externals/gridflow/bundled/Base/GemMath.h
new file mode 100644
index 00000000..96177a05
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemMath.h
@@ -0,0 +1,89 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+	Matrix class
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMMATH_H_
+#define INCLUDE_GEMMATH_H_
+
+#include "Base/config.h"
+
+#include <math.h>
+
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#ifdef __APPLE__
+# include <AvailabilityMacros.h>
+# if defined (MAC_OS_X_VERSION_10_3) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_3
+# else
+
+#define sqrtf(v) (float)sqrt((double)(v))
+#define cosf(v)  (float)cos((double)(v))
+#define sinf(v)  (float)sin((double)(v))
+#define tanf(v)  (float)tan((double)(v))
+#define logf(v)  (float)log((double)(v))
+#define expf(v)  (float)exp((double)(v))
+
+#define atan2f(v,p) (float)atan2((double)(v), (double)(p))
+#define powf(v,p)   (float)pow((double)(v), (double)(p))
+
+# endif /* OSX_10_3 */
+#endif /* __APPLE__ */
+
+
+///////////////////////////////////////////////////////////////////////////////
+//  Speedup found via Shark:  ppc only
+//
+//   If you do not require full precision, you can use the PowerPC floating-point 
+// reciprocal square-root estimate instruction (frsqrte) instead of calling sqrt().
+//
+//   If needed, you can increase the precision of the estimate returned by 
+// frsqrte (5-bits of precision) by using the Newton-Raphson method for improving 
+// the estimate (x0) for 1/sqrt(a) (x1 = 0.5 * x0 * [3.0 - a * x0 * x0]).
+///////////////////////////////////////////////////////////////////////////////
+#ifdef __ppc__
+# include <ppc_intrinsics.h>
+# ifdef sqrt
+#  undef sqrt
+# endif
+# ifdef sqrtf
+#  undef sqrtf
+# endif
+
+# define sqrt fast_sqrtf
+# define sqrtf fast_sqrtf
+
+inline double fast_sqrt(double x)
+{
+	register double est = __frsqrte(x);
+	return x * 0.5 * est * __fnmsub(est * est, x, 3.0);
+}
+
+inline float fast_sqrtf(float x)
+{
+	register float est = (float)__frsqrte(x);
+	return x * 0.5f * est * __fnmsubs(est * est, x, 3.0f);
+}
+#endif /* __ppc__ */
+
+#ifdef __WIN32__
+/* seems like there is no drand48() on w32 */
+/* JMZ: this should really return "double" instead of "float",
+ * but we need only float... */
+# define drand48() ((float)rand())/((float)RAND_MAX)
+#endif /* _WIN32 */
+
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemModelData.h b/externals/gridflow/bundled/Base/GemModelData.h
new file mode 100644
index 00000000..4545bf98
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemModelData.h
@@ -0,0 +1,42 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+	Structure for specifying a model for rendering
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMMODELDATA_H_
+#define INCLUDE_GEMMODELDATA_H_
+
+#include "Base/GemExportDef.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    imageStruct
+    
+    The basic image structure
+
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemModelData
+{
+	public:
+	
+		//////////
+		// Constructor
+		GemModelData()		{ }
+
+		//////////
+		// Destructor
+		~GemModelData()		{ }
+};
+
+
+#endif
diff --git a/externals/gridflow/bundled/Base/GemPBuffer.h b/externals/gridflow/bundled/Base/GemPBuffer.h
new file mode 100644
index 00000000..f11f5ee4
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPBuffer.h
@@ -0,0 +1,51 @@
+/* OpenGL pixel buffer
+ *
+ * Copyright (C) 2003-2004, Alexander Zaprjagaev <frustum@frustum.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __PBUFFER_H__
+#define __PBUFFER_H__
+
+struct PBuffer_data;
+
+class PBuffer {
+public:
+	
+	enum {
+		GEM_PBUFLAG_RGB = 1 << 0,
+		GEM_PBUFLAG_RGBA = 1 << 1,
+		GEM_PBUFLAG_DEPTH = 1 << 2,
+		GEM_PBUFLAG_STENCIL = 1 << 3,
+		GEM_PBUFLAG_FLOAT = 1 << 4,
+		GEM_PBUFLAG_MULTISAMPLE_2 = 1 << 5,
+		GEM_PBUFLAG_MULTISAMPLE_4 = 1 << 6
+	};
+	
+	PBuffer(int width,int height,int flags = GEM_PBUFLAG_RGBA | GEM_PBUFLAG_DEPTH | GEM_PBUFLAG_STENCIL);
+	~PBuffer();
+	
+	void enable();
+	void disable();
+	
+	int width;
+	int height;
+	
+protected:
+	struct PBuffer_data *data;
+};
+
+#endif /* __PBUFFER_H__ */
diff --git a/externals/gridflow/bundled/Base/GemPathBase.h b/externals/gridflow/bundled/Base/GemPathBase.h
new file mode 100644
index 00000000..7bd23aa4
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPathBase.h
@@ -0,0 +1,74 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    Base class for paths
+    
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMPATHBASE_H_
+#define INCLUDE_GEMPATHBASE_H_
+
+#include "Base/CPPExtern.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemPathBase
+    
+
+DESCRIPTION
+    
+    
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemPathBase : public CPPExtern
+{
+    CPPEXTERN_HEADER(GemPathBase, CPPExtern)
+
+    public:
+
+        //////////
+        // Constructor
+    	GemPathBase(int argc, t_atom *argv);
+   	
+    protected:
+    	
+    	//////////
+    	// Destructor
+    	virtual ~GemPathBase();
+
+    	//////////
+    	// When an open is received
+    	virtual void	openMess(t_symbol *arrayname);
+    	
+        //////////
+        // When a float val is received
+        virtual void    floatMess(float val) = 0;
+
+        //////////
+        // The number of dimensions
+        int             m_numDimens;
+
+        //////////
+        // The array
+        t_garray         *m_array;
+
+        //////////
+        // The outlet
+        t_outlet        *m_out1;
+
+    private:
+    	
+    	//////////
+    	// static member functions
+    	static void 	openMessCallback(void *data, t_symbol *arrayname);
+        static void     floatMessCallback(void *data, float n);
+};
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemPixConvert.h b/externals/gridflow/bundled/Base/GemPixConvert.h
new file mode 100644
index 00000000..e1cd5a3d
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixConvert.h
@@ -0,0 +1,160 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    GemPixConvertSIMD.h
+       - header-file for color conversion
+       - this is mainly for (SIMD-)optimized routines
+       - part of GEM
+
+    Copyright (c) 2006 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+
+#ifndef INCLUDE_GEMPIXCONVERT_SIMD_H_
+#define INCLUDE_GEMPIXCONVERT_SIMD_H_
+
+#include "GemPixUtil.h"
+#include "GemSIMD.h"
+
+// use formulae from http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC30
+/*
+ * [Y]    1    [  65.738 129.075  25.064 ]   [R] [ 16]
+ * [U] = --- * [ -37.945 -74.494 112.439 ] * [G]+[128]
+ * [V] = 256   [ 112.439 -94.154 -18.285 ]   [B] [128]
+ *
+ * [R]    1    [ 298.082    0.0    408.583 ]    [Y] [ 16]
+ * [G] = --- * [ 298.082 -100.291 -208.120 ] * ([U]-[128])
+ * [B] = 256   [ 298.082  516.411    0.0   ]    [V] [128]
+ */
+
+#define YUV_POYNTON
+// here comes something to be afraid of:
+// (probably it would be better to define the matrices as real constant-value matrices)
+// (instead of element-wise)
+
+#ifdef YUV_POYNTON
+# define Y_OFFSET   16
+# define UV_OFFSET 128
+
+// RGB2YUV
+// poynton-values rounded
+# define RGB2YUV_11  66
+# define RGB2YUV_12 129
+# define RGB2YUV_13  25
+# define RGB2YUV_21 -38
+# define RGB2YUV_22 -74
+# define RGB2YUV_23 112
+# define RGB2YUV_31 112
+# define RGB2YUV_32 -94
+# define RGB2YUV_33 -18
+
+// YUV2RGB
+// (we skip _21 and _31 as they are equal to _11)
+#if 0
+// poynton-values rounded
+# define YUV2RGB_11 298
+# define YUV2RGB_12   0
+# define YUV2RGB_13 409 
+# define YUV2RGB_22 -100
+# define YUV2RGB_23 -208
+# define YUV2RGB_32 516
+# define YUV2RGB_33   0
+#else
+
+// this is round(256*inv(rgb2yuv/256))
+// so the general error should be smaller
+# define YUV2RGB_11  298
+# define YUV2RGB_12   -1
+# define YUV2RGB_13  409
+# define YUV2RGB_22 -100
+# define YUV2RGB_23 -210
+# define YUV2RGB_32  519
+# define YUV2RGB_33    0
+#endif
+
+#else
+/* the old ones: */
+# define Y_OFFSET   0
+# define UV_OFFSET 128
+// RGB2YUV
+# define RGB2YUV_11 77
+# define RGB2YUV_12 150
+# define RGB2YUV_13 29
+# define RGB2YUV_21 -43
+# define RGB2YUV_22 -85
+# define RGB2YUV_23 128
+# define RGB2YUV_31 128
+# define RGB2YUV_32 -107
+# define RGB2YUV_33 -21
+// YUV2RGB
+# define YUV2RGB_11 256
+# define YUV2RGB_12 0
+# define YUV2RGB_13 359
+# define YUV2RGB_22 -88
+# define YUV2RGB_23 -183
+# define YUV2RGB_32 454
+# define YUV2RGB_33 0
+
+#endif /* POYNTON */
+
+/* AltiVec */
+#ifdef __VEC__
+
+/* there are problems on OSX10.3 with older versions of gcc, since the intrinsic code
+ * below freely changes between signed and unsigned short vectors
+ * newer versions of gcc accept this...
+ * LATER: fix the code (GemPixConvertAltivec:750..800)
+ */
+# ifdef __GNUC__
+/* according to hcs it does NOT work with gcc-3.3
+ * for simplicity, i disable everything below gcc4
+ * JMZ: 20061114
+ */
+#  if __GNUC__ < 4
+#   warning disabling AltiVec for older gcc: please fix me
+#   define NO_VECTORINT_TO_VECTORUNSIGNEDINT
+#  endif
+# endif /* GNUC */
+
+
+  void RGB_to_YCbCr_altivec(unsigned char *rgbdata, size_t RGB_size, 
+							unsigned char *pixels);
+  void RGBA_to_YCbCr_altivec(unsigned char *rgbadata, size_t RGBA_size, 
+							 unsigned char *pixels);
+  void BGR_to_YCbCr_altivec(unsigned char *bgrdata, size_t BGR_size, 
+							unsigned char *pixels);
+  void BGRA_to_YCbCr_altivec(unsigned char *bgradata, size_t BGRA_size, 
+							 unsigned char *pixels);
+  void YUV422_to_BGRA_altivec(unsigned char *yuvdata, size_t pixelnum,
+                              unsigned char *pixels);
+  void YV12_to_YUV422_altivec(short*Y, short*U, short*V,
+                              unsigned char *data, int xsize, int ysize);
+# ifndef NO_VECTORINT_TO_VECTORUNSIGNEDINT
+  void YUV422_to_YV12_altivec(short*pY, short*pY2, short*pU, short*pV,
+                              unsigned char *gem_image, int xsize, int ysize);
+# endif
+#endif /* AltiVec */
+
+/* SSE2 */
+#ifdef __SSE2__
+void RGBA_to_UYVY_SSE2(unsigned char *rgbadata, 
+                       size_t size, 
+                       unsigned char *yuvdata);
+void UYVY_to_RGBA_SSE2(unsigned char *yuvdata, 
+                       size_t size, 
+                       unsigned char *rgbadata);
+void UYVY_to_RGB_SSE2(unsigned char *yuvdata, 
+                      size_t size, 
+                      unsigned char *rgbadata);
+#endif /* SSE2 */
+
+/* in case somebody has an old machine... */
+#ifdef __MMX__
+
+#endif /* MMX */
+
+#endif /* INCLUDE_GEMPIXCONVERT_SIMD_H_ */
diff --git a/externals/gridflow/bundled/Base/GemPixDualObj.h b/externals/gridflow/bundled/Base/GemPixDualObj.h
new file mode 100644
index 00000000..ba039e2c
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixDualObj.h
@@ -0,0 +1,190 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    An object which accepts two pixes.
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    Copyright (c) 2002 James Tittle & Chris Clepper
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMPIXDUALOBJ_H_
+#define INCLUDE_GEMPIXDUALOBJ_H_
+
+#define NEW_DUAL_PIX
+
+#include "Base/GemPixObj.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemPixDualObj
+    
+    An object which accepts two pixes.
+
+DESCRIPTION
+
+    Inlet for a gem - "gem_right"
+    
+    "gem_right" - The second gem list
+   
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemPixDualObj : public GemPixObj
+{
+    public:
+
+        //////////
+        // Constructor
+    	GemPixDualObj();
+    	
+    protected:
+    	
+    	//////////
+    	// Destructor
+    	virtual ~GemPixDualObj();
+
+	void render(GemState *state);
+
+    	//////////
+	// Derived classes should NOT override this!
+	// This makes sure that the images are the same size.
+    	// This calls the other process functions based on the input images.
+    	virtual void 	processImage(imageStruct &image);
+
+#ifndef NEW_DUAL_PIX
+    	//////////
+    	// The derived class HAS override this.
+    	// This is called whenever a new image comes through and
+	//		both of the image structs are RGBA
+    	virtual void 	processDualImage(imageStruct &image, imageStruct &right) = 0;
+    	
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and both
+    	//		of the image structs are gray8.
+		// The default behavior is to output an error.
+        virtual void 	processDualGray(imageStruct &image, imageStruct &right);
+    	
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and 
+		//		the left image is an RGBA while the right is a gray8.
+		// The default behavior is to output an error.
+    	virtual void 	processRightGray(imageStruct &image, imageStruct &right);
+    	
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and
+		//		the left image is a gray8, the right is an RGBA
+		// The default behavior is to output an error.
+    	virtual void 	processLeftGray(imageStruct &image, imageStruct &right);
+        
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and both
+    	//		of the image structs are YUV.
+		// The default behavior is to output an error.
+        virtual void 	processDualYUV(imageStruct &image, imageStruct &right);
+    	
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and 
+		//		the left image is an RGBA while the right is a YUV.
+		// The default behavior is to output an error.
+    	virtual void 	processRightYUV(imageStruct &image, imageStruct &right);
+    	
+    	//////////
+    	// The derived class CAN override this.
+    	// This is called whenever a new image comes through and
+		//		the left image is a YUV, the right is an RGBA
+		// The default behavior is to output an error.
+    	virtual void 	processLeftYUV(imageStruct &image, imageStruct &right);
+#else
+    	//////////
+    	// The derived class SHOULD override this, if it provides a method for "all" formats
+	virtual void processDualImage(imageStruct &left, imageStruct &right);
+	// Here come the more specific dual-processors
+    	// The derived class SHOULD override these as needed
+
+	/* for simplicity this is done via preprocessor defines:
+	 * the functions defined are like : 
+	 **  processRGBA_RGBA(left, right);
+	 */
+
+#define PROCESS_DUALIMAGE(CS1, CS2)		\
+	virtual void process##CS1 ##_##CS2 (imageStruct &left, imageStruct &right){processDualImage(left, right);}
+	PROCESS_DUALIMAGE(RGBA, RGBA);
+	PROCESS_DUALIMAGE(RGBA, Gray);
+	PROCESS_DUALIMAGE(RGBA, YUV );
+
+	PROCESS_DUALIMAGE(Gray, RGBA);
+	PROCESS_DUALIMAGE(Gray, Gray);
+	PROCESS_DUALIMAGE(Gray, YUV );
+
+	PROCESS_DUALIMAGE(YUV,  RGBA);
+	PROCESS_DUALIMAGE(YUV,  Gray);
+	PROCESS_DUALIMAGE(YUV,  YUV );
+#undef  PROCESS_DUALIMAGE
+
+	/* for simplicity this is done via preprocessor defines:
+	 * the functions defined are like : 
+	 **  processRGBA_Altivec(left, right);
+	 */
+#define PROCESS_DUALIMAGE_SIMD(CS1, CS2,_SIMD_EXT)			\
+	virtual void process##CS1 ##_##_SIMD_EXT (imageStruct &left, imageStruct &right){ \
+	  process##CS1 ##_##CS2 (left, right);}
+
+	PROCESS_DUALIMAGE_SIMD(RGBA, RGBA, MMX);
+	PROCESS_DUALIMAGE_SIMD(RGBA, MMX , SSE2);
+	PROCESS_DUALIMAGE_SIMD(RGBA, RGBA, Altivec);
+
+	PROCESS_DUALIMAGE_SIMD(YUV , YUV , MMX);
+	PROCESS_DUALIMAGE_SIMD(YUV , MMX , SSE2);
+	PROCESS_DUALIMAGE_SIMD(YUV , YUV , Altivec);
+
+	PROCESS_DUALIMAGE_SIMD(Gray, Gray, MMX);
+	PROCESS_DUALIMAGE_SIMD(Gray, MMX , SSE2);
+	PROCESS_DUALIMAGE_SIMD(Gray, Gray, Altivec);
+#undef PROCESS_DUALIMAGE_SIMD
+
+#endif                
+        //////////
+        virtual void	postrender(GemState *);
+    	virtual void	stopRendering();
+        virtual void	rightstopRendering()	{ ; }
+    	virtual void   	rightRender(GemState *state);
+    	virtual void   	rightPostrender(GemState *)    	{ ; }
+	virtual void	rightStoprender()		{ ; }
+
+    	//////////
+    	GemCache    	*m_cacheRight;
+
+    	//////////
+    	pixBlock    	*m_pixRight;
+        
+        int		m_pixRightValid;
+        int		org_pixRightValid;
+
+        //////////
+        t_inlet         *m_inlet;
+
+    	//////////
+    	// creation callback
+    	static void 	real_obj_setupCallback(t_class *classPtr)
+    	    { GemPixObj::real_obj_setupCallback(classPtr); GemPixDualObj::obj_setupCallback(classPtr); }
+    	
+  private:
+    
+     	static inline GemPixDualObj *GetMyClass(void *data) {return((GemPixDualObj *)((Obj_header *)data)->data);}
+
+    	//////////
+    	// Static member functions
+    	static void 	obj_setupCallback(t_class *classPtr);
+    	static void 	gem_rightMessCallback(void *x, t_symbol *s, int argc, t_atom *argv);
+};
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemPixImageLoad.h b/externals/gridflow/bundled/Base/GemPixImageLoad.h
new file mode 100644
index 00000000..5274e692
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixImageLoad.h
@@ -0,0 +1,37 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    GemPixImageLoad.h
+       - code to load in and resize an image
+       - part of GEM
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+ 
+#ifndef INCLUDE_GEMPIXIMAGELOAD_H_
+#define INCLUDE_GEMPIXIMAGELOAD_H_
+
+#include "Base/GemExportDef.h"
+
+struct imageStruct;
+
+// image2mem() reads an image file into memory
+//   and a pointer to an imageStruct
+//       NULL = failure
+// 
+//       format:
+//    	  returns either GL_LUMINANCE or GL_RGBA
+// 
+//   automatically allocates the memory for the user
+//
+// This can read TIFF, SGI, and JPG images
+//
+GEM_EXTERN extern imageStruct *image2mem(const char *filename);
+
+#endif
diff --git a/externals/gridflow/bundled/Base/GemPixImageSave.h b/externals/gridflow/bundled/Base/GemPixImageSave.h
new file mode 100644
index 00000000..ccbe91ae
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixImageSave.h
@@ -0,0 +1,38 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    Gempiximagesave.h
+       - code to save an image
+       - part of GEM
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+ 
+#ifndef INCLUDE_GEMPIXIMAGESAVE_H_
+#define INCLUDE_GEMPIXIMAGESAVE_H_
+
+#include "Base/GemExportDef.h"
+
+struct imageStruct;
+
+// image2mem() reads an image file into memory
+//   and a pointer to an imageStruct
+//       NULL = failure
+// 
+//       format:
+//    	  returns either GL_LUMINANCE or GL_RGBA
+// 
+//   automatically allocates the memory for the user
+//
+// This can read TIFF, SGI, and JPG images
+//
+GEM_EXTERN extern int mem2image(imageStruct *image, const char *filename, const int type);
+
+
+#endif
diff --git a/externals/gridflow/bundled/Base/GemPixObj.h b/externals/gridflow/bundled/Base/GemPixObj.h
new file mode 100644
index 00000000..5d9073c7
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixObj.h
@@ -0,0 +1,142 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    Base class for pix class gem objects
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMPIXOBJ_H_
+#define INCLUDE_GEMPIXOBJ_H_
+
+#include "Base/GemBase.h"
+#include "Base/GemPixUtil.h"
+#include "stdlib.h"
+#include "string.h"
+#include "math.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemPixObj
+    
+    Base class for pix class gem objects
+
+DESCRIPTION
+
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemPixObj : public GemBase
+{
+    public:
+
+  //////////
+  // Constructor
+  GemPixObj();
+
+    protected:
+    	
+  //////////
+  // Destructor
+  virtual ~GemPixObj()				{ }
+
+  //////////
+  // The derived class should override this if it provides
+  // processing independent of the image.format
+  // This is called whenever a new image comes through.
+  // The default is to output an error
+  virtual void 	processImage(imageStruct &image);
+
+  //////////
+  // The derived class should override this.
+  // This is called whenever a new RGB image comes through.
+  // The default is to call processImage().
+  virtual void 	processRGBImage(imageStruct &image);
+
+  //////////
+  // The derived class should override this.
+  // This is called whenever a new RGBA image comes through.
+  // The default is to call processImage().
+  virtual void 	processRGBAImage(imageStruct &image);
+  // SIMD-optimized functions: by default the non-optimized function is called
+  virtual void 	processRGBAMMX(imageStruct &image);
+  virtual void 	processRGBASSE2(imageStruct &image);
+  virtual void 	processRGBAAltivec(imageStruct &image);
+
+  //////////
+  // The derived class should override this.
+  // This is called whenever a new gray8 image comes through.
+  // The default is to call processImage().
+  virtual void 	processGrayImage(imageStruct &image);
+  // SIMD-optimized functions: by default the non-optimized function is called
+  virtual void 	processGrayMMX(imageStruct &image);
+  virtual void 	processGraySSE2(imageStruct &image);
+  virtual void 	processGrayAltivec(imageStruct &image);     
+
+  //////////
+  // The derived class should override this.
+  // This is called whenever a new YUV422 image comes through.
+  // The default is to call processImage().
+  virtual void 	processYUVImage(imageStruct &image);
+  // SIMD-optimized functions: by default the non-optimized function is called
+  virtual void 	processYUVMMX(imageStruct &image);
+  virtual void 	processYUVSSE2(imageStruct &image);
+  virtual void 	processYUVAltivec(imageStruct &image);
+    	
+  //////////
+  // If the derived class needs the image resent.
+  //  	This sets the dirty bit on the pixBlock.
+  void	    	setPixModified();
+  
+  //////////
+  // Turn on/off processing
+  void            processOnOff(int on);
+    
+  //////////
+  // the pixBlock-cache
+  pixBlock    cachedPixBlock;
+  pixBlock    *orgPixBlock;
+
+  //////////
+  int             m_processOnOff;
+  int             m_simd;
+
+  //////////
+  // creation callback
+  static void 	real_obj_setupCallback(t_class *classPtr) { 
+    GemBase::real_obj_setupCallback(classPtr);
+    GemPixObj::obj_setupCallback(classPtr); 
+  }
+
+  //////////
+  // The derived class should NOT override this unless they have some
+  //		very special behavior.
+  // Do the rendering, which calls processImage or processGrayImage, etc...
+  // save the image-information
+  virtual void 	render(GemState *state);
+  // turn the pointer back to the old data after rendering
+  virtual void postrender(GemState *state);
+  
+  void startRendering(void) {
+    //post("start rendering");
+    setPixModified();
+  }
+
+ private:
+
+  static inline GemPixObj *GetMyClass(void *data) {return((GemPixObj *)((Obj_header *)data)->data);}
+    
+  //////////
+  // static member functions
+  static void     obj_setupCallback(t_class *classPtr);
+  static void 	floatMessCallback(void *data, float n);
+  static void 	simdMessCallback(void *data, float n);
+};
+
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemPixPete.h b/externals/gridflow/bundled/Base/GemPixPete.h
new file mode 100644
index 00000000..be3c2e19
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixPete.h
@@ -0,0 +1,219 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    helper stuff for ports of Pete's Plugins
+
+    http://www.petewarden.com
+
+    Copyright (c) 2004 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+#ifndef INCLUDE_GEMPIXPETE_H_
+#define INCLUDE_GEMPIXPETE_H_
+
+
+// utility functions from PeteHelpers.h
+typedef unsigned long U32; 
+typedef unsigned short U16;
+typedef unsigned char U8;
+
+
+/* is this only on my system ?
+   i thought Gem's YUV is UYVY and not YVYU
+   seems weird... (jmz)
+*/
+#ifdef __APPLE__
+
+# define SHIFT_ALPHA	(24)
+# define SHIFT_RED	(16)
+# define SHIFT_GREEN	(8)
+# define SHIFT_BLUE	(0)
+
+# define SHIFT_U  (24)
+# define SHIFT_Y1 (16)
+# define SHIFT_V  (8)
+# define SHIFT_Y2 (0)
+
+#else
+
+# define SHIFT_ALPHA	(24)
+# define SHIFT_RED	(16)
+# define SHIFT_GREEN	(8)
+# define SHIFT_BLUE	(0)
+
+# define SHIFT_U  (0)
+# define SHIFT_Y1 (8)
+# define SHIFT_V  (16)
+# define SHIFT_Y2 (24)
+#endif
+
+const float Pete_Pi=3.141582f;
+const float Pete_TwoPi=(2.0f*Pete_Pi);
+const float Pete_HalfPi=(0.5f*Pete_Pi);
+
+static inline void Pete_ZeroMemory(void* pMemory,int nCount) {
+	char* pCurrent=(char*)pMemory;
+	char* pEnd=(pCurrent+nCount);
+	//	while (pCurrent<pEnd)	*pCurrent=0;
+	//		pCurrent+=1;
+	//	}
+	while(pCurrent<pEnd)*pCurrent++=0;
+//	memset(pMemory,0,nCount);
+}
+
+typedef U32		PETE_PIXELDATA32;
+#define SIZEOF_PETE_PIXELDATA32 (4)
+
+typedef U32		PETE_PIXELDATA24;
+#define SIZEOF_PETE_PIXELDATA24 (3)
+
+typedef U16		PETE_PIXELDATA16;
+#define SIZEOF_PETE_PIXELDATA16 (2)
+
+static inline void Pete_CopyAndConvert24BitTo32Bit(PETE_PIXELDATA24* pSource,PETE_PIXELDATA32* pOutput,int nPixelCount) {
+
+	char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA24);
+	char* pCurrentSource=((char*)pSource);
+	char* pCurrentOutput=((char*)pOutput);
+
+	while (pCurrentSource<pSourceEnd) {
+		*((PETE_PIXELDATA32*)pCurrentOutput)=
+		*((PETE_PIXELDATA24*)pCurrentSource);
+
+		pCurrentSource+=SIZEOF_PETE_PIXELDATA24;
+		pCurrentOutput+=SIZEOF_PETE_PIXELDATA32;
+	}
+}
+
+static inline void Pete_CopyAndConvert32BitTo24Bit(PETE_PIXELDATA32* pSource,PETE_PIXELDATA24* pOutput,int nPixelCount) {
+
+	char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA32);
+	char* pCurrentSource=((char*)pSource);
+	char* pCurrentOutput=((char*)pOutput);
+
+	while (pCurrentSource<pSourceEnd) {
+		*((PETE_PIXELDATA24*)pCurrentOutput)=
+		*((PETE_PIXELDATA32*)pCurrentSource);
+
+		pCurrentSource+=SIZEOF_PETE_PIXELDATA32;
+		pCurrentOutput+=SIZEOF_PETE_PIXELDATA24;
+	}
+}
+
+static inline void Pete_InPlaceConvert24BitTo32Bit(PETE_PIXELDATA24* pBuffer,int nPixelCount) {
+	char* pBufferStart=(char*)pBuffer;
+	
+	char* pBuffer32Current=(pBufferStart+((nPixelCount-1)*SIZEOF_PETE_PIXELDATA32));
+	char* pBuffer24Current=(pBufferStart+((nPixelCount-1)*SIZEOF_PETE_PIXELDATA24));
+
+	while (pBuffer32Current>=pBufferStart) {
+
+		*((PETE_PIXELDATA32*)pBuffer32Current)=
+		*((PETE_PIXELDATA24*)pBuffer24Current);
+
+		pBuffer32Current-=SIZEOF_PETE_PIXELDATA32;
+		pBuffer24Current-=SIZEOF_PETE_PIXELDATA24;
+	}
+}
+
+static inline void Pete_CopyAndConvert16Bit565To32Bit(PETE_PIXELDATA16* pSource,PETE_PIXELDATA32* pOutput,int nPixelCount) {
+
+	char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA16);
+	char* pCurrentSource=((char*)pSource);
+	char* pCurrentOutput=((char*)pOutput);
+
+	while (pCurrentSource<pSourceEnd) {
+
+		PETE_PIXELDATA16 SourceColour=
+			*((PETE_PIXELDATA16*)pCurrentSource);
+
+		const int nMaskedRed=(SourceColour>>11)&31;
+		const int nMaskedGreen=(SourceColour>>5)&63;
+		const int nMaskedBlue=(SourceColour>>0)&31;
+
+		const int nNormalizedRed=(nMaskedRed<<3)|(nMaskedRed>>2);
+		const int nNormalizedGreen=(nMaskedGreen<<2)|(nMaskedGreen>>4);
+		const int nNormalizedBlue=(nMaskedBlue<<3)|(nMaskedBlue>>2);
+
+		const PETE_PIXELDATA32 OutputColour=
+			(nNormalizedRed<<16)|
+			(nNormalizedGreen<<8)|
+			(nNormalizedBlue<<0);
+
+		*((PETE_PIXELDATA32*)pCurrentOutput)=OutputColour;
+
+		pCurrentSource+=SIZEOF_PETE_PIXELDATA16;
+		pCurrentOutput+=SIZEOF_PETE_PIXELDATA32;
+
+	}
+
+}
+
+static inline void Pete_CopyAndConvert32BitTo16Bit565(PETE_PIXELDATA32* pSource,PETE_PIXELDATA16* pOutput,int nPixelCount) {
+
+	char* pSourceEnd=((char*)pSource)+(nPixelCount*SIZEOF_PETE_PIXELDATA32);
+	char* pCurrentSource=((char*)pSource);
+	char* pCurrentOutput=((char*)pOutput);
+
+	while (pCurrentSource<pSourceEnd) {
+
+		PETE_PIXELDATA32 SourceColour=
+			*((PETE_PIXELDATA32*)pCurrentSource);
+
+		const int nSourceRed=(SourceColour>>16)&0xff;
+		const int nSourceGreen=(SourceColour>>8)&0xff;
+		const int nSourceBlue=(SourceColour>>0)&0xff;
+
+		const int nMaskedRed=(nSourceRed>>3);
+		const int nMaskedGreen=(nSourceGreen>>2);
+		const int nMaskedBlue=(nSourceBlue>>3);
+
+		PETE_PIXELDATA16 OutputColour=
+			(nMaskedRed<<11)|
+			(nMaskedGreen<<5)|
+			(nMaskedBlue<<0);
+
+		*((PETE_PIXELDATA16*)pCurrentOutput)=OutputColour;
+
+		pCurrentSource+=SIZEOF_PETE_PIXELDATA32;
+		pCurrentOutput+=SIZEOF_PETE_PIXELDATA16;
+	}
+}
+typedef void* SPete_MemHandle;
+
+inline SPete_MemHandle Pete_NewHandle(int nBytesToAlloc) {
+	return malloc(nBytesToAlloc);
+}
+	
+inline void Pete_FreeHandle(SPete_MemHandle InHandle) {
+	free(InHandle);
+}
+
+inline void* Pete_LockHandle(SPete_MemHandle InHandle) {
+	return InHandle;
+}
+
+inline void Pete_UnLockHandle(SPete_MemHandle InHandle) {
+	// do nothing
+}
+
+const int cnBiggestSignedInt=0x7fffffff;
+
+inline int GetLuminance(const U32 inColour) {
+	const int nRed=(inColour&(0xff<<SHIFT_RED))>>16;
+	const int nGreen=(inColour&(0xff<<SHIFT_GREEN))>>8;
+	const int nBlue=(inColour&(0xff<<SHIFT_BLUE))>>0;
+
+	const int nLuminance =
+            ((77 * nRed)+
+             (150* nGreen)+ // used to be 50 which is plain wron
+             (29 * nBlue));
+
+	return nLuminance;
+}
+
+#endif /* INCLUDE_GEMPIXPETE_H_ */
+// end of PeteHelpers.h stuff
diff --git a/externals/gridflow/bundled/Base/GemPixUtil.h b/externals/gridflow/bundled/Base/GemPixUtil.h
new file mode 100644
index 00000000..88ef0afc
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemPixUtil.h
@@ -0,0 +1,284 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    GemPixUtil.h
+       - contains image functions for pix objects
+       - part of GEM
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMPIXUTIL_H_
+#define INCLUDE_GEMPIXUTIL_H_
+
+#include "Base/GemGL.h"
+
+#ifdef __APPLE__
+# include <QuickTime/QuickTime.h>
+#endif // __APPLE__
+
+#include <string.h>
+#include <stdlib.h>
+
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Color component defines
+//
+// These should be used to reference the various color channels
+///////////////////////////////////////////////////////////////////////////////
+
+/* RGBA */
+
+#if GL_RGBA_GEM == GL_RGBA
+const int chRed		= 0;
+const int chGreen	= 1;
+const int chBlue	= 2;
+const int chAlpha	= 3;
+#else
+const int chAlpha	= 0;
+const int chRed		= 1;
+const int chGreen	= 2;
+const int chBlue	= 3;
+#endif
+
+
+/* Gray */
+const int chGray	= 0;
+
+/* YUV422 */
+const int chU           = 0;
+const int chY0          = 1;
+const int chV           = 2;
+const int chY1          = 3;
+
+// basic helper functions, like CLAMP and powerOfTwo
+#include "Base/GemFuncUtil.h"
+
+// utility functions from PeteHelpers.h
+#include "Base/GemPixPete.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    imageStruct
+    
+    The basic image structure
+
+-----------------------------------------------------------------*/
+// we now have a class "imageStruct";
+// since i need to compile some of the sources with an older version of Gem
+// there is a  new define here:
+#define IMAGE_CLASS
+
+struct GEM_EXTERN imageStruct
+{
+  imageStruct();
+  ~imageStruct();
+
+  void info();
+  //////////
+  // columns
+  unsigned char* allocate(size_t size);
+  unsigned char* allocate();
+
+  // if we have allocated some space already, only re-allocate when needed.
+  unsigned char* reallocate(size_t size);
+  unsigned char* reallocate();
+ 
+  // delete the buffer (if it is ours)
+  void clear();
+
+
+  //////////
+  // dimensions of the image
+  GLint         xsize;
+  GLint   	    ysize;
+
+  //////////
+  // (average) width of 1 pixel (LUMINANCE = 1, RGBA = 4, YUV = 2)
+  GLint   	    csize;
+
+  //////////
+  // data type - always GL_UNSIGNED_BYTE (except for OS X)
+  GLenum          type;
+
+  //////////
+  // the format - either GL_RGBA, GL_LUMINANCE
+  // or GL_YCBCR_422_GEM (which is on mac-computers GL_YCBCR_422_APPLE)
+  GLenum          format;
+  
+  //////////
+  // is this owned by us (? what about underscores ?)
+  int notowned;
+  
+  //////////
+  // gets a pixel
+  /* X,Y are the coordinates
+   * C is the offset in the interleaved data (like chRed==0 for red)
+   * you should use chRed instead of 0 (because it might not be 0)
+   */
+  // heck, why are X&Y swapped ?? (JMZ)
+  inline unsigned char GetPixel(int Y, int X, int C)
+  { return(data[Y * xsize * csize + X * csize + C]); }
+  
+  //////////
+  // sets a pixel
+  /* while X and Y should be clear (coordinates), 
+   * C is the offset (like chRed==0 for red).
+   * VAL is the value to set.
+   */
+  inline void SetPixel(int Y, int X, int C, unsigned char VAL)
+  { data[Y * xsize * csize + X * csize + C] = VAL; }
+
+
+  /////////
+  // gets the color of a pixel
+  void getRGB(int X, int Y, unsigned char*r, unsigned char*g, unsigned char*b);
+  void getGrey(int X, int Y, unsigned char*g);
+  void getYUV(int X, int Y, unsigned char*y, unsigned char*u, unsigned char*v);
+  
+  /* following will set the whole image-data to either black or white
+   * the size of the image-data is NOT xsize*ysize*csize but datasize
+   * this is mostly slower
+   * i have put the datasize into private (like pdata) (bad idea?)
+   */
+  void setBlack();
+  void setWhite();
+
+  /* certain formats are bound to certain csizes,
+   * it's quite annoying to have to think again and again (ok, not much thinking)
+   * so we just give the format (like GL_LUMINANCE) 
+   * and it will set the image format to this format
+   * and set and return the correct csize (like 1)
+   * if no format is given the current format is used
+   */
+  int setCsizeByFormat(int format);
+  int setCsizeByFormat();
+
+  
+  /* various copy functions
+   * sometimes we want to copy the whole image (including pixel-data),
+   * but often it is enough to just copy the meta-data (without pixel-data)
+   * into a new imageStruct
+   */
+  void copy2Image(imageStruct *to);
+  void copy2ImageStruct(imageStruct *to); // copy the imageStruct (but not the actual data)
+  /* this is a sort of better copy2Image, 
+   * which only copies the imageStruct-data if it is needed
+   */
+  void refreshImage(imageStruct *to);
+
+  /* inplace swapping Red and Blue channel */
+  void swapRedBlue    ();
+
+
+  ///////////////////////////////////////////////////////////////////////////////
+  // acquiring data including colour-transformations
+  // should be accelerated if possible
+  /* i wonder whether this is the right place to put these routines
+   * they should be stored somewhere centrally
+   * (because maybe a lot of objects would like them) (like [pix_rgba]...)
+   * but it might be better to put them (the actual conversion routines) into
+   * separate files (a separate library?)
+   * orgdata points to the actual data in the given format
+   * the datasize will be read from image.xsize, image.ysize
+   * the dest-format will be given by image.format
+   *   this is maybe not really clean (the meta-data is stored in the destination, 
+   *   while the source has no meta-data of its own)
+   */
+  void convertTo  (imageStruct*to,   GLenum dest_format=0);
+  void convertFrom(imageStruct*from, GLenum dest_format=0);
+
+  void fromRGB    (unsigned char* orgdata);
+  void fromRGBA   (unsigned char* orgdata);
+  void fromBGR    (unsigned char* orgdata);
+  void fromBGRA   (unsigned char* orgdata);
+  void fromRGB16  (unsigned char* orgdata);
+  void fromGray   (unsigned char* orgdata);
+  void fromGray   (short* orgdata);
+  void fromUYVY   (unsigned char* orgdata);
+  void fromYUY2   (unsigned char* orgdata); // YUYV
+  void fromYVYU   (unsigned char* orgdata);
+  /* planar YUV420: this is rather generic and not really YV12 only */
+  void fromYV12   (unsigned char* Y, unsigned char*U, unsigned char*V);
+  /* assume that the planes are near each other: YVU */
+  void fromYV12   (unsigned char* orgdata);
+  /* assume that the planes are near each other: YVU */
+  void fromYU12   (unsigned char* orgdata);
+  /* overloading the above two in order to accept pdp YV12 packets */
+  void fromYV12   (short* Y, short*U, short*V);
+  void fromYV12   (short* orgdata);
+  
+  /* aliases */
+  void fromYUV422 (unsigned char* orgdata){fromUYVY(orgdata);}
+  void fromYUV420P(unsigned char* orgdata){fromYV12(orgdata);}
+  void fromYUV420P(unsigned char*Y,unsigned char*U,unsigned char*V){fromYV12(Y,U,V);}
+
+  // "data" points to the image.
+  // the memory could(!) be reserved by this class or someone else
+  // "notowned" should be set to "1", if "data" points to foreign memory
+  // "data" is not freed directly, when the destructor is called
+  unsigned char   *data;    // the pointer to the data
+  private:
+  // "pdata" is the private data, and is the memory reserved by this class
+  // this data is freed when the destructor is called
+  unsigned char   *pdata;
+  // "datasize" is the size of data reserved at "pdata"    
+  size_t    datasize;
+  
+  public:
+  //////////
+  // true if the image is flipped horizontally (origin is upper-left)
+  // false if the image is openGL-conformant (origin is lower-left)
+  GLboolean       upsidedown;
+
+};
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    pixBlock
+    
+    The pix block structure
+
+-----------------------------------------------------------------*/
+struct GEM_EXTERN pixBlock
+{
+  pixBlock();
+
+    //////////
+    // the block's image
+    imageStruct     image;
+
+    //////////
+    // is this a newimage since last time?
+    //	ie, has it been refreshed
+    int     	    newimage;
+    
+    //////////
+    // keeps track of when new films are loaded
+    //	useful for rectangle_textures on OSX
+    int		    newfilm;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// imageStruct utility functions
+//
+///////////////////////////////////////////////////////////////////////////////
+//////////
+// copies all of the data over and mallocs memory
+GEM_EXTERN extern void copy2Image(imageStruct *to, imageStruct *from);
+
+//////////
+// assumes that it only has to refresh the data
+GEM_EXTERN extern void refreshImage(imageStruct *to, imageStruct *from);
+
+GEM_EXTERN extern int getPixFormat(char*);
+#endif // GEMPIXUTIL_H_
diff --git a/externals/gridflow/bundled/Base/GemSIMD.h b/externals/gridflow/bundled/Base/GemSIMD.h
new file mode 100644
index 00000000..32cdb32a
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemSIMD.h
@@ -0,0 +1,111 @@
+
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    include file for SIMD
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+/* 
+ * compiler-issues:
+ *
+ * gcc: when gcc is invoked with "-mmmx" (or "-msse2" or "-maltivec") 
+ *      the defines __MMX__ (or corresponding) will be defined automatically
+ *
+ * vc6: you will have to install the microsoft processor-pack to use MMX/SSE2
+ *      you have to have the sp5 for vc6 installed (note: do not install sp6!!)
+ * vc6/vc7: (i think) you need to define __MMX__ (and friends) by hand
+ */
+
+#ifndef INCLUDE_GEMSIMD_H_
+#define INCLUDE_GEMSIMD_H_
+
+#define GEM_VECTORALIGNMENT 128
+
+const int GEM_SIMD_NONE=0;
+const int GEM_SIMD_MMX=1;
+const int GEM_SIMD_SSE2=2;
+const int GEM_SIMD_ALTIVEC=3;
+
+
+/* include for SIMD on PC's */
+#ifdef __SSE2__
+#include <emmintrin.h>
+// for icc this should be <dvec.h>
+typedef union{
+  unsigned char c[16];
+  __m128i v;
+} vector_128;
+#elif defined __VEC__
+/* for AltiVec (PowerPC) */
+typedef union{
+  unsigned char c[16];
+  vector unsigned char v;
+} vector_128;
+#endif
+
+#if defined __MMX__
+# include <mmintrin.h>
+// for icc this should be <ivec.h>
+typedef union{
+  __m64 v; unsigned char c[8];
+} vector64i;
+
+#endif
+
+
+#ifdef __SSE__
+#include <xmmintrin.h>
+
+typedef union{
+  __m128 m; float f[4];
+} vector128f;
+#endif
+
+#include "GemExportDef.h"
+
+
+/* this is a help-class to query the capabilities of the cpu
+ * whenever you want to use SIMD-optimized code, you should
+ * make sure you chose the code-block based on the "cpuid" value
+ * of this class and NOT simply on preprocessor defines.
+ *
+ * this class needs only be instantiated once (and it is done in GemMan)
+ * this sets the cpuid
+ */
+class GEM_EXTERN GemSIMD
+{
+ public:
+   GemSIMD();
+  ~GemSIMD();
+
+  /* this gets the "cpuid" (something like GEM_SIMD_NONE) */
+  static int getCPU();
+
+  /* change the cpuid returned by getCPU()
+   * you can only set the cpuid to something that is actually supported
+   * by your processor
+   */
+  static int requestCPU(int cpuid);
+
+  /* performs a runtime-check (if possible) to determine the capabilities
+   * of the CPU
+   * sets realcpuid appropriately and returns this  value
+   */
+  static int simd_runtime_check(void);
+
+ private:
+  /* this is the maximum capability of the CPU */
+  static int realcpuid;
+  /* this is the current choosen capability (normally this equals realcpuid) */
+  static int cpuid;
+};
+
+#endif /* INCLUDE_GEMSIMD_H_ */
diff --git a/externals/gridflow/bundled/Base/GemShape.h b/externals/gridflow/bundled/Base/GemShape.h
new file mode 100644
index 00000000..101c975d
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemShape.h
@@ -0,0 +1,115 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    Base class for shapes
+
+    Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+    Copyright (c) Günther Geiger. geiger@epy.co.at
+    Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMSHAPE_H_
+#define INCLUDE_GEMSHAPE_H_
+
+#include "Base/GemBase.h"
+
+/*-----------------------------------------------------------------
+-------------------------------------------------------------------
+CLASS
+    GemShape
+    
+    Base class for shapes
+
+DESCRIPTION
+    
+    Inlet for a float - "ft1"
+
+    "ft1" - the size of the shape
+    "draw" - the drawing style
+    "width" - the line width when drawing with lines
+    
+-----------------------------------------------------------------*/
+class GEM_EXTERN GemShape : public GemBase
+{
+    public:
+
+        //////////
+        // Constructor
+        // [in] size - A size of 0. means to just use the default (ie, 1.)
+    	GemShape(t_floatarg size);
+	GemShape();
+    	
+    protected:
+    	
+    	//////////
+    	// Destructor
+    	virtual ~GemShape();
+
+	    //-----------------------------------
+	    // GROUP:	Access functions
+	    //-----------------------------------
+    
+    	//////////
+    	// The width of the lines in line draw mode
+    	void	    	linewidthMess(float linewidth);
+    	
+    	//////////
+    	// The size of the object
+    	void	    	sizeMess(float size);
+
+    	//////////
+    	// How the object should be drawn
+    	virtual void	typeMess(t_symbol *type);
+    	
+	    //-----------------------------------
+	    // GROUP:	Utility functions
+	    //-----------------------------------
+	
+		void SetVertex(GemState* state,float x, float y, float z, float tx, float ty,int curCoord);
+
+	    //-----------------------------------
+	    // GROUP:	Member variables
+	    //-----------------------------------
+    
+    	//////////
+    	// The line width for GL_LINE mode
+        GLfloat	    	m_linewidth;
+
+    	//////////
+    	// The size of the object
+        GLfloat	    	m_size;
+	
+        //////////
+        // The drawing style (GL_LINE, GL_POLYGON, etc)
+        GLenum	    	m_drawType;
+
+        //////////
+        // The size inlet
+        t_inlet         *m_inlet;
+
+	//-----------------------------------
+	// GROUP:	Setup functions
+	//-----------------------------------
+    
+    	//////////
+    	// creation callback
+    	static void 	real_obj_setupCallback(t_class *classPtr)
+	  { GemBase::real_obj_setupCallback(classPtr); GemShape::obj_setupCallback(classPtr); }
+    	
+    private:
+    
+     	static inline GemShape *GetMyClass(void *data) {return((GemShape *)((Obj_header *)data)->data);}
+
+       	//////////
+    	// static member functions
+    	static void 	obj_setupCallback(t_class *classPtr);
+    	static void 	linewidthMessCallback(void *data, t_floatarg linewidth);
+    	static void 	typeMessCallback(void *data, t_symbol *type);
+    	static void 	sizeMessCallback(void *data, t_floatarg size);
+};
+
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemState.h b/externals/gridflow/bundled/Base/GemState.h
new file mode 100644
index 00000000..b41d2ee3
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemState.h
@@ -0,0 +1,150 @@
+/*-----------------------------------------------------------------
+  LOG
+  GEM - Graphics Environment for Multimedia
+
+  The state to pass among GEM objects
+
+  Copyright (c) 1997-2000 Mark Danks. mark@danks.org
+  Copyright (c) Günther Geiger. geiger@epy.co.at
+  Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+  For information on usage and redistribution, and for a DISCLAIMER OF ALL
+  WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+  -----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMSTATE_H_
+#define INCLUDE_GEMSTATE_H_
+
+#include "Base/GemExportDef.h"
+#include "Base/GemGL.h"
+
+struct pixBlock;
+class TexCoord;
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  TexCoord
+    
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN TexCoord
+{
+ public:
+  TexCoord() : s(0.f), t(0.f) { }
+    TexCoord(float s_, float t_) : s(s_), t(t_) { }
+      float   	    s;
+      float   	    t;
+};
+
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  GemState
+    
+  The state to pass among GEM objects
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN GemState
+{
+ public:
+
+  //////////
+  // Has something changed since the last time?
+  int                 dirty;
+
+  //////////
+  // Are we in a display list creation?
+  int 	    	    inDisplayList;
+    	
+  //////////
+  // Lighting on?
+  int 	    	    lighting;
+    	
+  //////////
+  // Smooth shading (flat is other type)
+  int 	    	    smooth;
+    	
+  //////////
+  // Texture mapping on?
+  // 0..off
+  // 1..normalized texture
+  // 2..rectangle texture
+  int 	    	    texture;
+    	
+  //////////
+  // The image to texture map
+  pixBlock	        *image;
+    	
+  //////////
+  // Texture coordinates.
+  // This can be NULL if there aren't any coordinates
+  TexCoord    	    *texCoords;
+    	
+  //////////
+  // The number of TexCoords
+  int 	    	    numTexCoords;
+  
+  //////////
+  // The number of multiTexUnits
+  //   default = 0, max = 7
+  int 	    	    multiTexUnits;
+
+  //////////
+  // Milliseconds since last frame
+  // If in Stereoscopic mode, then it is the same number for both left
+  //		and right renderings
+  float				tickTime;
+
+  //////////////////
+  // the default draw-type (might be overriden within a Geo)
+  GLenum				drawType;
+
+  //////////
+  // how deep is the current stack /* 4 fields for the 4 stacks */
+  int stackDepth[4];
+	
+  ////////////
+  //vertex-array data
+  int                 VertexDirty; // the vertex-arrays has changed
+
+  GLfloat				*VertexArray;
+  int					VertexArraySize;
+  int					VertexArrayStride;
+
+  GLfloat				*ColorArray;
+  int		 			HaveColorArray;
+
+  GLfloat				*NormalArray;
+  int					HaveNormalArray;
+
+  GLfloat				*TexCoordArray;
+  int					HaveTexCoordArray;
+
+  //////////
+  // Constructor
+  GemState();
+
+  float texCoordX(int num) {
+    if (texture && numTexCoords > num)
+      return texCoords[num].s;
+    else return 0.;
+  }
+
+  float texCoordY(int num) {
+    if (texture && numTexCoords > num)
+      return texCoords[num].t;
+    else return 0.;
+  }
+
+  /* reset (parts of?) the GemState: to be called from [gemhead] */
+  void reset();
+
+};
+    	
+#endif	// for header file
diff --git a/externals/gridflow/bundled/Base/GemVector.h b/externals/gridflow/bundled/Base/GemVector.h
new file mode 100644
index 00000000..ce000833
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemVector.h
@@ -0,0 +1,77 @@
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    vector-classes
+
+    zmoelnig@iem.at, tigital@mac.com
+
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMVECTOR_H_
+#define INCLUDE_GEMVECTOR_H_
+
+#include "Base/GemExportDef.h"
+
+
+
+// This is our 2D point class.  This will be used to store the UV coordinates.
+class GEM_EXTERN CVector2 {
+public:
+    float x, y;
+};
+
+
+// This is our basic 3D point/vector class
+class GEM_EXTERN CVector3 {
+public:
+  // the elements of a vector:
+  float x, y, z; 
+    
+    // A default constructor
+  CVector3();
+
+    // This is our constructor that allows us to initialize our data upon creating an instance
+    CVector3(float X, float Y, float Z);
+
+    // Here we overload the + operator so we can add vectors together 
+    CVector3 operator+(CVector3 vVector);
+
+    // Here we overload the - operator so we can subtract vectors 
+    CVector3 operator-(CVector3 vVector);
+
+    // Here we overload the - operator so we can negate the vector
+    CVector3 operator-();
+
+    // Here we overload the * operator so we can multiply by scalars
+    CVector3 operator*(float num);
+
+    // Here we overload the * operator so we can dot-multiply 
+    float    operator*(CVector3 vVector);
+
+     // cross-multiplication
+    CVector3 cross(CVector3 vVector);
+
+    // Here we overload the / operator so we can divide by a scalar
+    CVector3 operator/(float num);
+
+
+    // here we calculate the absolute-value of the vector
+    float abs();
+
+    // here we calculate the square of the absolute-value of the vector
+    float abs2();
+
+    // here we normalize the vector
+    CVector3 normalize();
+
+    // here we compare 2 vectors on approx. equality
+    bool equals(CVector3 vVector, float epsilon);
+
+    
+};
+
+#endif /* INCLUDE_GEMVECTOR_H_ */
diff --git a/externals/gridflow/bundled/Base/GemVersion.h b/externals/gridflow/bundled/Base/GemVersion.h
new file mode 100644
index 00000000..926407f0
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemVersion.h
@@ -0,0 +1,30 @@
+#ifndef GEM_VERSION_H
+#define GEM_VERSION_H
+
+#define GEM_VERSION_MAJOR 0
+#define GEM_VERSION_MINOR 91
+#define GEM_VERSION_BUGFIX 0
+#define GEM_VERSION_CODENAME "'tigital'"
+
+
+#define STRINGIFY2(x) #x
+#define STRINGIFY(x) STRINGIFY2(x)
+
+static const char *GEM_VERSION = \
+  "" STRINGIFY(GEM_VERSION_MAJOR)  \
+  "." STRINGIFY(GEM_VERSION_MINOR) \
+  "." STRINGIFY(GEM_VERSION_BUGFIX) \
+  " " GEM_VERSION_CODENAME;
+
+
+static const char *GEM_MAINTAINER = "IOhannes m zmoelnig";
+
+static const char *GEM_AUTHORS[] = {
+  "Chris Clepper",
+  "James Tittle",
+  "IOhannes m zmoelnig"};
+
+static const char* GEM_OTHERAUTHORS =
+  "Guenter Geiger, Daniel Heckenberg, Cyrille Henry, et al.";
+#endif
+
diff --git a/externals/gridflow/bundled/Base/GemVertex.h b/externals/gridflow/bundled/Base/GemVertex.h
new file mode 100644
index 00000000..c390de98
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemVertex.h
@@ -0,0 +1,37 @@
+
+/*-----------------------------------------------------------------
+LOG
+    GEM - Graphics Environment for Multimedia
+
+    include file for VertexArrays
+
+    Copyright (c) 2004 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+    For information on usage and redistribution, and for a DISCLAIMER OF ALL
+    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+
+#ifndef INCLUDE_GEMVERTEX_H_
+#define INCLUDE_GEMVERTEX_H_
+
+#include "Base/GemBase.h"
+
+class GEM_EXTERN GemVertex : public GemBase {
+ protected:
+
+    	
+  //////////
+  // Constructor
+  GemVertex();
+
+  ~GemVertex();
+
+  //////////
+  // If anything in the object has changed
+  // especially, if the vertex-array has changed
+  virtual void  	setModified();
+};
+
+
+#endif /* INCLUDE_GEMVERTEX_H_ */
diff --git a/externals/gridflow/bundled/Base/GemWinCreate.h b/externals/gridflow/bundled/Base/GemWinCreate.h
new file mode 100644
index 00000000..79104cde
--- /dev/null
+++ b/externals/gridflow/bundled/Base/GemWinCreate.h
@@ -0,0 +1,224 @@
+/*-----------------------------------------------------------------
+
+GEM - Graphics Environment for Multimedia
+
+create a window
+
+Copyright (c) 1997-1999 Mark Danks. mark@danks.org
+Copyright (c) Günther Geiger. geiger@epy.co.at
+Copyright (c) 2001-2002 IOhannes m zmoelnig. forum::für::umläute. IEM. zmoelnig@iem.kug.ac.at
+For information on usage and redistribution, and for a DISCLAIMER OF ALL
+WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
+
+-----------------------------------------------------------------*/
+
+#ifndef INCLUDE_GEMWINCREATE_H_
+#define INCLUDE_GEMWINCREATE_H_
+#include "Base/config.h"
+
+#ifdef __unix__
+# include <GL/glx.h>
+# ifdef HAVE_LIBXXF86VM
+#  include <X11/extensions/xf86vmode.h>
+# endif
+#elif defined __WIN32__
+# include <windows.h>
+#elif defined __APPLE__
+# import <AGL/agl.h>
+#else
+# error Define OS specific window creation
+#endif
+
+#include "Base/GemExportDef.h"
+
+// I hate Microsoft...I shouldn't have to do this!
+#ifdef __WIN32__
+# pragma warning( disable : 4244 )
+# pragma warning( disable : 4305 )
+# pragma warning( disable : 4091 )
+#endif
+
+#include "m_pd.h"
+
+#include <string.h>
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  WindowInfo
+    
+  All of the relavent information about an OpenGL window
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN WindowInfo
+{
+ public:
+	
+  // Constructor
+  WindowInfo() :
+    fs(0), 
+#ifdef __unix__
+    dpy(NULL), win(0), cmap(0), context(NULL), delete_atom(0)
+#elif defined __WIN32__
+    win(NULL), dc(NULL), context(NULL)
+#elif defined __APPLE__
+    pWind(NULL), context(NULL), offscreen(NULL), pixelSize(32),
+    pixMap(NULL), rowBytes(0), baseAddr(NULL)
+#endif
+    {}
+  int         fs;                 // FullScreen
+  int         have_constContext;  // 1 if we have a constant context
+  
+#ifdef __unix__
+  Display     *dpy;               // X Display
+  Window      win;                // X Window
+  int         screen;             // X Screen
+  Colormap    cmap;               // X color map
+  GLXContext  context;            // OpenGL context
+  Atom        delete_atom;
+
+#ifdef HAVE_LIBXXF86VM
+  XF86VidModeModeInfo deskMode; // originale ModeLine of the Desktop
+#endif
+
+#elif defined __WIN32__
+
+  HWND        win;                // Window handle
+  HDC         dc;                 // Device context handle
+  HGLRC       context;            // OpenGL context
+
+#elif defined __APPLE__
+
+    WindowPtr		pWind;		// GEM window reference for gemwin
+    AGLContext		context;	// OpenGL context
+    GWorldPtr		offscreen;	// Macintosh offscreen buffer
+    long		pixelSize;	//
+    Rect		r;		//
+    PixMapHandle	pixMap;		// PixMap Handle
+    long		rowBytes;	// 
+    void 		*baseAddr;	// 
+    short		fontList;	// Font
+
+#else
+#error Define OS specific window data
+#endif
+};
+
+/*-----------------------------------------------------------------
+  -------------------------------------------------------------------
+  CLASS
+  WindowHints
+    
+  Hints for window creation
+
+  DESCRIPTION
+    
+  -----------------------------------------------------------------*/
+class GEM_EXTERN WindowHints
+{
+ public:
+
+  //////////
+  // Should the window be realized
+  int         actuallyDisplay;
+
+  //////////
+  // Single or double buffered
+  int         buffer;
+
+  //////////
+  // The width/x of the window
+  int         width;
+  //////////
+  // The height/y of the window
+  int         height;
+
+  //////////
+  // the real width/height of the window (set by createGemWindow())
+  int real_w, real_h;
+
+  //////////
+  // The offset/x of the window (likely tobe overridden by the window-manager)
+  int         x_offset;
+  //////////
+  // The offset/y of the window (likely tobe overridden by the window-manager)
+  int         y_offset;
+
+  //////////
+  // Should we do fullscreen ?
+  int			fullscreen;
+  
+  //////////
+  // Is there a second screen ?
+  int			secondscreen;
+
+  //////////
+  // Should there be a window border?
+  int			border;
+
+  //////////
+  // mode for full-screen antialiasing
+  int                   fsaa;
+
+  ///// if we can use a different display , this has its meaning under X
+  char* display;
+
+  //////////////
+  // display some title....
+  char* title;
+
+  //////////
+  // The GLXcontext to share rendering with
+#ifdef __unix__
+    GLXContext  shared;
+#elif defined __WIN32__
+    HGLRC       shared;
+#elif defined __APPLE__
+    AGLContext	shared;
+#else
+#error Define OS specific OpenGL context
+#endif
+};
+
+//////////
+// Create a new window
+GEM_EXTERN extern int createGemWindow(WindowInfo &info, WindowHints &hints);
+
+//////////
+// Destroy a window
+GEM_EXTERN extern void destroyGemWindow(WindowInfo &info);
+
+//////////
+// Set the cursor
+GEM_EXTERN extern int cursorGemWindow(WindowInfo &info, int state);
+
+//////////
+// Set the topmost position
+GEM_EXTERN extern int topmostGemWindow(WindowInfo &info, int state);
+
+//////////
+// swap the buffers (get's called in double-buffered mode)
+GEM_EXTERN extern void gemWinSwapBuffers(WindowInfo &nfo);
+/////////
+// reestablish a context
+GEM_EXTERN extern void gemWinMakeCurrent(WindowInfo &nfo);
+
+/////////
+// init OS-specific stuff
+GEM_EXTERN extern bool initGemWin(void);
+
+/////////
+// prepare a WindowInfo for context-sharing
+GEM_EXTERN void initWin_sharedContext(WindowInfo &info, WindowHints &hints);
+
+
+
+/////////
+// 
+GEM_EXTERN extern void dispatchGemWindowMessages(WindowInfo &nfo);
+
+
+
+#endif  // for header file
diff --git a/externals/gridflow/bundled/Base/config.h b/externals/gridflow/bundled/Base/config.h
new file mode 100644
index 00000000..bd2a823c
--- /dev/null
+++ b/externals/gridflow/bundled/Base/config.h
@@ -0,0 +1,65 @@
+/* configuration-file */
+#ifndef HAVE_BASE_CONFIG_H_
+#define HAVE_BASE_CONFIG_H_
+
+#ifdef _MSC_VER
+# ifndef __WIN32__
+#  define __WIN32__
+# endif
+#endif
+
+#ifdef __WIN32__
+# ifndef NT
+#  define NT
+# endif
+# ifndef MSW
+#  define MSW
+# endif
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+#endif
+
+
+
+#ifdef HAVE_CONFIG_GENERIC_H
+
+# include "Base/configGeneric.h"
+
+#else /* includes system-specific files */
+
+# ifdef __linux__
+#  include "Base/configLinux.h"
+# endif
+
+# ifdef __APPLE__
+//#  include "Base/configDarwin.h"
+#  define HAVE_QUICKTIME
+# endif
+
+# ifdef __WIN32__
+#  include "Base/configNT.h"
+# endif
+#endif
+
+#ifdef NEW_VIDEOFILM
+# ifndef FILM_NEW
+#  define FILM_NEW
+# endif
+# ifndef VIDEO_NEW
+#  define VIDEO_NEW
+# endif
+#endif
+
+#ifdef HAVE_LIBFTGL
+#  define FTGL
+#endif
+
+#ifdef HAVE_FFMPEG
+# define HAVE_LIBAVCODEC
+# define HAVE_LIBAVFORMAT
+#elif defined (HAVE_LIBAVCODEC) && defined (HAVE_LIBAVFORMAT)
+# define HAVE_FFMPEG
+#endif
+
+#endif /* HAVE_BASE_CONFIG_H_ */
diff --git a/externals/gridflow/bundled/Base/configLinux.h b/externals/gridflow/bundled/Base/configLinux.h
new file mode 100644
index 00000000..ca0a20b8
--- /dev/null
+++ b/externals/gridflow/bundled/Base/configLinux.h
@@ -0,0 +1,40 @@
+/* Base/configLinux.h.  Generated from configLinux.h.in by configure.  */
+
+/* fullscreen: querying via libXxf86vm */
+/* #undef HAVE_LIBXXF86VM */
+
+/* font rendering */
+/* #undef HAVE_LIBFTGL */
+
+/* image loading / saving */
+#define HAVE_LIBTIFF 1
+#define HAVE_LIBJPEG 1
+/* #undef HAVE_LIBMAGICKPLUSPLUS */
+
+/* movie decoding */
+#define HAVE_LIBMPEG 1
+#define HAVE_LIBMPEG3 1
+#define HAVE_LIBQUICKTIME 1
+#define HAVE_LQT_OPEN_WRITE 1
+/* #undef HAVE_LIBAVIPLAY */
+#define HAVE_FFMPEG 1
+#define GEM_AVSTREAM_CODECPOINTER 1
+
+/* video grabbing */
+#define HAVE_VIDEO4LINUX 1
+/* #undef HAVE_VIDEO4LINUX2 */
+#define HAVE_LIBDV 1
+
+/* image analysis */
+/* #undef HAVE_ARTOOLKIT */
+
+/* posix threads */
+#define HAVE_PTHREADS 1
+
+/* enable the use of the all-in-one video/movie objects */
+#define NEW_VIDEOFILM 1
+
+/* types, structures, compiler characteristics, ... */
+#define SIZEOF_VOID_P 4
+#define SIZEOF_UNSIGNED_INT 4
+