Linear3D.cpp

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/** @file
 *
 * @ingroup dspTrajectoryLib
 *
 * @brief Linear Function Unit in 3D for Jamoma DSP
 *
 * @details a simple linear function in two dimensions @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 "Linear3D.h"


#define thisTTClass         Linear3D
#define thisTTClassName     "linear.3D"
#define thisTTClassTags     "audio, trajectory"


TT_AUDIO_CONSTRUCTOR
{   addAttribute(A,             kTypeFloat64);
    addAttribute(B,             kTypeFloat64);
    setProcessMethod(processAudio);
//  setCalculateMethod(calculateValue);
}


Linear3D::~Linear3D()
{
    ;
}

TTErr Linear3D::processAudio(TTAudioSignalArrayPtr inputs, TTAudioSignalArrayPtr outputs)
{
    TTAudioSignal&      out = outputs->getSignal(0);
    TTChannelCount      numOutputChannels = out.getNumChannelsAsInt();
    
    if (numOutputChannels != 3) {
        TTValue v = 3;      
        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];
    TTSampleValuePtr    outSampleZ          = out.mSampleVectors[2];

    for (int i=0; i<vs; i++) {  
        outSampleX[i] = inSampleX[i]-1.0;
        outSampleY[i] = mA * outSampleX[i];         
        outSampleZ[i] = mB * outSampleX[i];
    }
    return kTTErrNone;
}