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/*
flext tutorial - attributes 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 addition
It is a variation of the tutorial "simple 2"
*/
// IMPORTANT: enable attribute processing (specify before inclusion of flext headers!)
// For clarity, this is done here, but you'd better specify it as a compiler definition
// FLEXT_ATTRIBUTES must be 0 or 1,
#define FLEXT_ATTRIBUTES 1
// 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
class attr1:
public flext_base
{
FLEXT_HEADER(attr1,flext_base)
public:
// constructor
attr1();
protected:
void m_trigger(float f);
// stored argument
float arg;
private:
// callback for method "m_trigger" (with one float argument)
FLEXT_CALLBACK_F(m_trigger)
// define attribute callbacks for variable "arg" (with GET and SET properties)
FLEXT_ATTRVAR_F(arg)
};
// instantiate the class
FLEXT_NEW("attr1",attr1)
attr1::attr1():
arg(0) // initialize argument
{
// define inlets
AddInAnything(); // first inlet of type anything (index 0)
// define outlets
AddOutFloat(); // one float outlet (has index 0)
// register methods
FLEXT_ADDMETHOD(0,m_trigger); // register method (for floats) "m_trigger" for inlet 0
FLEXT_ADDATTR_VAR1("arg",arg); // register attribute "arg" with variable arg
}
void attr1::m_trigger(float f)
{
float res = arg+f;
// output value to outlet
ToOutFloat(0,res); // (0 stands for the outlet index 0)
}
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