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/*
flext tutorial - simple 1
Copyright (c) 2002,2003 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 < 400)
#error You need at least flext version 0.4.0
#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 ~)
// Special names are possible with the usage of libraries (see the lib1 tutorial example)
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)
// 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)
}
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