1 files changed, 74 insertions, 0 deletions
diff --git a/packages/noncvs/windows/extra/Gem/dev/Gem/GLStack.h b/packages/noncvs/windows/extra/Gem/dev/Gem/GLStack.h
new file mode 100644
index 00000000..c8ef7bf2
--- /dev/null
+++ b/packages/noncvs/windows/extra/Gem/dev/Gem/GLStack.h
@@ -0,0 +1,74 @@
+/*-----------------------------------------------------------------
+  LOG
+  GEM - Graphics Environment for Multimedia
+
+  handling of diverse openGL stacks
+
+  Copyright (c) 1997-2000 Mark Danks. mark@danks.org
+  Copyright (c) Günther Geiger. geiger@epy.co.at
+  Copyright (c) 2001-2011 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.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__GEM_GEM_GLSTACK_H_
+#define _INCLUDE__GEM_GEM_GLSTACK_H_
+
+#include "Gem/ExportDef.h"
+
+#include <memory>
+
+namespace gem {
+class GEM_EXTERN GLStack {
+ public:
+  GLStack(bool haveValidContext=false);
+  virtual ~GLStack(void);
+
+  enum GemStackId { MODELVIEW, COLOR, TEXTURE, PROJECTION };
+
+  /** push the given matrix to the stack if the maximum has not been reached 
+   *   returns true on success and false otherwise (stack overflow)
+   * NOTE: needs valid openGL context
+   * NOTE: might change the current matrix mode; you have to manually reset it
+   */
+  bool push(enum GemStackId);
+
+  /** pushes all matrices possible
+   * NOTE: finishes in MODELVIEW matrix mode
+   */
+  void push(void);
+
+  /** pop the given matrix from the stack if the maximum has not been reached 
+   *   returns true on success and false otherwise (stack underflow)
+   * NOTE: needs valid openGL context
+   * NOTE: might change the current matrix mode; you have to manually reset it
+   */
+  bool pop(enum GemStackId);
+  /** pops all matrices possible
+   * NOTE: finishes in MODELVIEW matrix mode
+   */
+  void pop(void);
+
+  /** 
+   * reset the maximum stack depth of the given stack 
+   * NOTE: needs valid openGL context
+   */
+  void reset(void);
+  /** 
+   * reset the maximum stack depth of all stacks
+   *  returns the current stack depth (-1 on failure)
+   * NOTE: needs valid openGL context
+   */
+  int reset(enum GemStackId);
+
+  void print(void);
+
+ private:
+  class Data;
+  std::auto_ptr<Data>data;
+};
+
+} /* namespace gem */
+
+
+#endif /* _INCLUDE__GEM_GEM_GLSTACK_H_ */