Jamoma API  0.6.0.a19
Rose2D.cpp
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1 /** @file
2  *
3  * @ingroup dspTrajectoryLib
4  *
5  * @brief Rose Function Unit in 2D for Jamoma DSP
6  *
7  * @details see http://mathworld.wolfram.com/Rose.html for details @n
8  *
9  * @authors Nils Peters
10  *
11  * @copyright Copyright © 2011 by Nils Peters @n
12  * This code is licensed under the terms of the "New BSD License" @n
13  * http://creativecommons.org/licenses/BSD/
14  */
15 
16 #include "Rose2D.h"
17 
18 
19 #define thisTTClass Rose2D
20 #define thisTTClassName "rose.2D"
21 #define thisTTClassTags "audio, trajectory, 2D"
22 
23 
24 TT_AUDIO_CONSTRUCTOR
26 
27  setAttributeValue(TT("a"), 0.0);
28 
29 
30  setProcessMethod(processAudio);
31 // setCalculateMethod(calculateValue);
32 }
33 
34 
35 Rose2D::~Rose2D()
36 {
37  ;
38 }
39 
40 //TTErr Rose2D::calculateValue(const TTFloat64& x, TTFloat64& y, TTPtrSizedInt data)
41 //{
42 // y = x;
43 // return kTTErrNone;
44 //}
45 
46 
47 TTErr Rose2D::processAudio(TTAudioSignalArrayPtr inputs, TTAudioSignalArrayPtr outputs)
48 {
49  TTAudioSignal& out = outputs->getSignal(0);
50  TTChannelCount numOutputChannels = out.getNumChannelsAsInt();
51 
52  if (numOutputChannels != 2) {
53  TTValue v = 2;
54  out.setMaxNumChannels(v);
55  out.setNumChannels(v);
56  }
57 
58  TTAudioSignal& in0 = inputs->getSignal(0);
59  TTUInt16 vs = in0.getVectorSizeAsInt();
60 
61  TTSampleValuePtr inSampleX = in0.mSampleVectors[0];
62  TTSampleValuePtr outSampleX = out.mSampleVectors[0];
63  TTSampleValuePtr outSampleY = out.mSampleVectors[1];
64  TTFloat64 phi, r;
65 
66  for (int i=0; i<vs; i++) {
67 
68  // r = cos(mA * phi)
69  // x = sin(phi) * r
70  // y = cos(phi) * r
71 
72  phi = inSampleX[i] * kTTPi; // 0 .. 2Pi
73  r = cos(mA * phi);
74 
75  outSampleX[i] = sin(phi) * r;
76  outSampleY[i] = cos(phi) * r;
77 
78  }
79 return kTTErrNone;
80 }
std::uint16_t TTUInt16
16 bit unsigned integer
Definition: TTBase.h:176
#define addAttribute(name, type)
A convenience macro to be used by subclasses for registering attributes with a custom getter...
Definition: TTAttribute.h:29
#define setProcessMethod(methodName)
A convenience macro to be used by subclasses for setting the process method.
Rose Function Unit in 2D for Jamoma DSP.
double TTFloat64
64 bit floating point number
Definition: TTBase.h:188
#define TT
This macro is defined as a shortcut for doing a lookup in the symbol table.
Definition: TTSymbol.h:155
TTErr setMaxNumChannels(const TTValue &newMaxNumChannels)
Attribute accessor.
64-bit floating point
Definition: TTBase.h:272
The TTAudioSignal class represents N vectors of audio samples for M channels.
Definition: TTAudioSignal.h:57
TTSampleValue ** mSampleVectors
An array of pointers to the first sample in each vector. Declared Public for fast access...
Definition: TTAudioSignal.h:74
TTUInt16 TTChannelCount
Data type used when counting the number of channels in multi-channel audio signals and processes...
Definition: TTAudioSignal.h:31
A simple container for an array of TTAudioSignal pointers.
TTErr
Jamoma Error Codes Enumeration of error codes that might be returned by any of the TTBlue functions a...
Definition: TTBase.h:342
No Error.
Definition: TTBase.h:343
TTFOUNDATION_EXPORT const TTFloat64 kTTPi
[doxygenAppendixC_constExample]
Definition: TTBase.cpp:23
[doxygenAppendixC_copyExample]
Definition: TTValue.h:34