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authorThomas Grill <xovo@users.sourceforge.net>2002-10-22 23:07:10 +0000
committerThomas Grill <xovo@users.sourceforge.net>2002-10-22 23:07:10 +0000
commitd62e56f4df9594f72ce501f5e19c974fd18e7295 (patch)
tree635d4af7a7c2425098e60ca277086ec436b617f7 /externals/grill/flext/tutorial/adv1/main.cpp
parentc6f373c281ecb5cd1f4aa7a070e15cc61ab8793c (diff)
This commit was generated by cvs2svn to compensate for changes in r186,
which included commits to RCS files with non-trunk default branches. svn path=/trunk/; revision=187
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+/*
+flext tutorial - advanced 1
+
+Copyright (c) 2002 Thomas Grill (xovo@gmx.net)
+For information on usage and redistribution, and for a DISCLAIMER OF ALL
+WARRANTIES, see the file, "license.txt," in this distribution.
+
+-------------------------------------------------------------------------
+
+This is an example of a simplified prepend object
+*/
+
+#include <flext.h>
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 400)
+#error You need at least flext version 0.4.0
+#endif
+
+
+class adv1:
+ public flext_base
+{
+ FLEXT_HEADER(adv1,flext_base)
+
+public:
+ // constructor with variable argument list
+ adv1(int argc,t_atom *argv);
+
+protected:
+ void m_any(const t_symbol *s,int argc,t_atom *argv); // method which digests anything
+
+ AtomList lst;
+private:
+ FLEXT_CALLBACK_A(m_any); // callback for method "m_any" (with anything argument)
+};
+
+// instantiate the class (constructor has a variable argument list)
+// note the two words in the string: prepend acts as an alias for adv1!
+FLEXT_NEW_V("adv1 prepend",adv1)
+
+
+
+// constructor
+
+adv1::adv1(int argc,t_atom *argv)
+{
+ AddInAnything(); // one inlet that can receive anything
+ AddOutAnything(); // one outlet for anything
+
+ // set up inlets and outlets
+ SetupInOut();
+
+ // register method
+ FLEXT_ADDMETHOD(0,m_any); // register method "m_any" for inlet 0
+
+ if(argc != 0) { // check for arg count
+ // store arg list
+ lst(argc,argv);
+ }
+ else {
+ // no args given
+ post("%s - no arguments given",thisName());
+
+ // tell flext that the initialization was not successful... object will not live
+ InitProblem();
+ }
+}
+
+
+
+// method
+
+void adv1::m_any(const t_symbol *s,int argc,t_atom *argv)
+{
+ // reserve space for as many atoms as possibly necessary
+ AtomList result(lst.Count()+argc+2);
+
+ // ix is our counter of atoms to output
+ int ix = 0;
+
+ int i = 0;
+ if(!IsSymbol(lst[0])) {
+ // if first element to prepend is no symbol then make it a "list"
+ SetSymbol(result[ix++],sym_list);
+ }
+ // copy atoms to prepend to result list
+ for(; i < lst.Count(); ++i) CopyAtom(&result[ix++],&lst[i]);
+
+ // if anything is no "list" or "float" then append it to result list
+ if(s != sym_list && s != sym_float
+#ifdef MAXMSP
+ && s != sym_int // in Max integers are system data types
+#endif
+ )
+ SetSymbol(result[ix++],s);
+
+ // append pending arguments to result list
+ for(i = 0; i < argc; ++i) CopyAtom(&result[ix++],argv+i);
+
+ // output result list as an anything
+ ToOutAnything(0,GetSymbol(result[0]),ix-1,result.Atoms()+1);
+}
+
+