Bspline2D.h

/* 
 * Bspline Function Unit for TTBlue
 * based on the bspline code by Jasch: http://www.jasch.ch/
 * ported by Nils Peters
 * 
 */

#ifndef __BSPLINE_2D_H__
#define __BSPLINE_2D_H__

#include "TTDSP.h"

#define MAXSIZE 256


class Bspline2D : TTAudioObjectBase {
    TTCLASS_SETUP(Bspline2D)        
    
protected:  
    
    TTUInt16    mResolution, mSteps; 
    TTFloat64   b_control[3 * MAXSIZE];
    TTFloat64   b_op[3];
    TTUInt16    b_knots[MAXSIZE * 3]; 
    TTFloat64   interval;
    TTFloat64   point3D[3];
    TTUInt8     mDimen, mDegree;
    
    
    //inline TTErr calculateValue(const TTFloat64& x, TTFloat64& y, TTPtrSizedInt data);
    
    /** A standard audio processing method as used by Jamoma DSP objects.
    @param inputs               The input vector that is to be processed.
    @param outputs              The resulting windowed vector.
    @return                 #TTErr error code if the method fails to execute, else #kTTErrNone.
    */
    TTErr processAudio(TTAudioSignalArrayPtr inputs, TTAudioSignalArrayPtr outputs);
    void calculatePoint();
    void calculateKnots(); 
    float calculateBlend(TTUInt16 k, TTUInt16 t);
};


#endif // __BSPLINE_2D_H__