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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/simple1/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 - simple 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 simple object doing a float inversion
+*/
+
+// include flext header
+#include <flext.h>
+
+// check for appropriate flext version
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 300)
+#error You need at least flext version 0.3.0
+#endif
+
+
+// define the class that stands for a pd/Max object
+// Attention: the class name must be the same as the object name!! (without an eventual ~)
+
+class simple1:
+ // inherit from basic flext class
+ public flext_base
+{
+ // obligatory flext header (class name,base class name)
+ FLEXT_HEADER(simple1,flext_base)
+
+public:
+ // constructor
+ simple1();
+
+protected:
+ void m_float(float f); // method for float values
+
+private:
+ FLEXT_CALLBACK_1(m_float,float); // callback for method "m_float" (with one float argument)
+};
+
+// instantiate the class
+FLEXT_NEW("simple1",simple1)
+
+
+simple1::simple1()
+{
+ // define inlets:
+ // first inlet must always by of type anything (or signal for dsp objects)
+ AddInAnything(); // add one inlet for any message
+
+ // define outlets:
+ AddOutFloat(); // add one float outlet (has index 0)
+
+ // set up inlets and outlets - obligatory!
+ SetupInOut();
+
+ // register methods
+ FLEXT_ADDMETHOD(0,m_float); // register method (for float messages) "m_float" for inlet 0
+}
+
+void simple1::m_float(float f)
+{
+ float res;
+ if(f == 0) {
+ // special case 0
+ post("%s - zero can't be inverted!",thisName());
+ res = 0;
+ }
+ else
+ // normal case
+ res = 1/f;
+
+ // output value to outlet
+ ToOutFloat(0,res); // (0 stands for the outlet index 0 - the leftmost outlet)
+}
+