void AudioVis::setup() {
for (int c = 0; c < audioManager->getNumChannels(); c++) {
spectrums.push_back( Spectrum(ofVec2f(20,(c*100+20)), c));
classicBars.push_back( ClassicFftBars(ofVec2f(296,(c*100+20)), c));
octaveEqs.push_back( Octaves(ofVec2f(578,(c*100+20)), c));
averageVolumes.push_back( AverageVolume(ofVec2f(803,(c*100+20))));
}
}
float *KG3DNoise::MakeNoise_2D(const int Height)
{
float total = 0;
int i,j,k,temp,ii,jj;
int frequency;
float amplitude,t;
float *OutputData;
// float **rendom,**Octaves;
float f1,f2,f3,f4,v1,v2,v3;
int wavelenghX,wavelenghY;
std::vector<float *> Octaves(m_nNumberOfOctaves);
std::vector<float *> rendom(m_nNumberOfOctaves);
for(i = 0;i < m_nNumberOfOctaves;++i)
{
frequency = 1 << i;
Octaves[i] = new float[m_nWidth * m_nHeight];
rendom[i] = new float[(frequency + 1) * (frequency + 1)];
}
OutputData = new float[m_nWidth * m_nHeight];
//init rendom
for(i = 0;i < m_nNumberOfOctaves;++i)
{
frequency = 1 << i;
for(j = 0; j < (frequency + 1) * (frequency + 1);++j)
{
srand((UINT)(time(NULL) + i * m_nWidth + j));
temp = rand();
t = Noise(temp);
rendom[i][j] = t;
}
}
for(i = 0;i < m_nNumberOfOctaves;++i)
{
frequency = 1 << i;
amplitude = pow(m_fPersistence,i);
wavelenghX = m_nWidth / frequency;
wavelenghY = m_nHeight / frequency;
for(j = 0;j < frequency;++j)
{
for(k = 0;k < frequency;++k)
{
f1 = rendom[i][j * frequency + k];
f2 = rendom[i][j * frequency + k + 1];
f3 = rendom[i][(j + 1) * frequency + k];
f4 = rendom[i][(j + 1) * frequency + k + 1];
for(ii = j * wavelenghY;ii < (j + 1) * wavelenghY;++ii)
{
for(jj = k * wavelenghX;jj < (k + 1) * wavelenghY;++jj)
{
t = (float)jj / (k + 1) / wavelenghX;
v1 = Cosine_Interpolate(f1,f2,t);
t = (float)jj / (k + 1) / wavelenghX;
v2 = Cosine_Interpolate(f3,f4,t);
t = (float)ii / (j + 1) / wavelenghY;
v3 = Cosine_Interpolate(v1,v2,t);
Octaves[i][ii * m_nWidth + jj] = v3 * amplitude;
}
}
}
}
}
for(i = 0;i < m_nHeight;++i)
{
for(j = 0;j < m_nWidth;++j)
{
total = 0.0f;
for(k = 0;k < m_nNumberOfOctaves;++k)
total += Octaves[k][i * m_nWidth + j];
total = total >= 0.0001f ? total : 0.0f;
OutputData[i * m_nWidth + j] = total * Height;
}
}
for(i = 0;i < m_nNumberOfOctaves;++i)
{
SAFE_DELETE_ARRAY(Octaves[i]);
SAFE_DELETE_ARRAY(rendom[i]);
}
return OutputData;
}
