Bean2D.cpp

Go to the documentation of this file.

/** @file
 *
 * @ingroup dspTrajectoryLib
 *
 * @brief Bean2D Trajectory Unit for Jamoma DSP
 *
 * @details see http://mathworld.wolfram.com/Bean.html for details @n
 * 
 * @authors Nils Peters
 *
 * @copyright Copyright © 2011 by Nils Peters @n
 * This code is licensed under the terms of the "New BSD License" @n
 * http://creativecommons.org/licenses/BSD/
 */

#include "Bean2D.h"


#define thisTTClass         Bean2D
#define thisTTClassName     "bean.2D"
#define thisTTClassTags     "audio, trajectory, 2D"


TT_AUDIO_CONSTRUCTOR
{   
    setProcessMethod(processAudio);
//  setCalculateMethod(calculateValue);
}


Bean2D::~Bean2D()
{
    ;
}

//TTErr Bean2D::calculateValue(const TTFloat64& x, TTFloat64& y, TTPtrSizedInt data)
//{
//  y = x;
//  return kTTErrNone;
//}


TTErr Bean2D::processAudio(TTAudioSignalArrayPtr inputs, TTAudioSignalArrayPtr outputs)
{
    TTAudioSignal&      out = outputs->getSignal(0);
    TTChannelCount      numOutputChannels = out.getNumChannelsAsInt();
    
    if (numOutputChannels != 2) {
        TTValue v = 2;      
        out.setMaxNumChannels(v);
        out.setNumChannels(v);      
    }
    
    TTAudioSignal&      in0 = inputs->getSignal(0);
    TTUInt16            vs  = in0.getVectorSizeAsInt();
    
    TTSampleValuePtr    inSampleX           = in0.mSampleVectors[0];
    TTSampleValuePtr    outSampleX          = out.mSampleVectors[0];
    TTSampleValuePtr    outSampleY          = out.mSampleVectors[1];
    TTFloat64 phi, r;
    
    for (int i=0; i<vs; i++) {  
        
        phi = inSampleX[i] * kTTPi; // 0 .. 2Pi
        r = pow(sin(phi),3.0) + pow(cos(phi), 3.0);
        
        outSampleX[i] = sin(phi) * r;
        outSampleY[i] = cos(phi) * r;

    }
return kTTErrNone;
}