void PixarDemo2012::generateWaveforms()
{
// DRAW MEM SPEHRES AND WAVEFORMS
// Check init flag
if ( mFft ) {
// Get data in the frequency (transformed) and time domains
float * freqData = mFft->getAmplitude();
float * timeData = mFft->getData();
int32_t dataSize = mFft->getBinSize();
// Cast data size to float
float dataSizef = (float)dataSize;
// Get dimensions
float scale = ( (float)getWindowWidth() - 20.0f ) / dataSizef;
float windowHeight = (float)getWindowHeight();
// Use polylines to depict time and frequency domains
PolyLine<Vec2f> freqLine;
PolyLine<Vec2f> timeLine;
makeBall = 0.0f;
float greatestFreq = 0.0;
// Iterate through data
for ( int32_t i = 0; i < dataSize; i++ ) {
// Do logarithmic plotting for frequency domain
float logSize = math<float>::log( dataSizef );
float x = (float)( ( math<float>::log( (float)i ) / logSize ) * dataSizef );
float y = math<float>::clamp( freqData[ i ] * ( x / dataSizef ) * ( math<float>::log( ( dataSizef - (float)i ) ) ), 0.0f, 2.0f );
if (y > makeBall) makeBall = y;
if(y > greatestFreq)
greatestFreq = y;
// Plot points on lines for tme domain
freqLine.push_back( Vec2f( x * scale + 10.0f, -y * ( windowHeight - 20.0f ) * 1.75f + ( windowHeight - 10.0f ) ) );
timeLine.push_back( Vec2f( (float)i * scale + 10.0f, timeData[ i ] * ( windowHeight - 20.0f ) * 0.25f + ( windowHeight * 0.25f + 10.0f ) ) );
}
//printf("%f\n", greatestFreq);
theMindField.SetAmps(greatestFreq);
// Draw signals
if ( drawFFT ) {
gl::draw( freqLine );
gl::draw( timeLine );
}
}
}
// Draw
void KissBasicApp::draw()
{
// Clear screen
gl::clear( ColorAf::black() );
// Check init flag
if ( mFft ) {
// Get data in the frequency (transformed) and time domains
float * freqData = mFft->getAmplitude();
float * timeData = mFft->getData();
int32_t dataSize = mFft->getBinSize();
// Cast data size to float
float dataSizef = (float)dataSize;
// Get dimensions
float scale = ( (float)getWindowWidth() - 20.0f ) / dataSizef;
float windowHeight = (float)getWindowHeight();
// Use polylines to depict time and frequency domains
PolyLine<Vec2f> freqLine;
PolyLine<Vec2f> timeLine;
// Iterate through data
for ( int32_t i = 0; i < dataSize; i++ ) {
// Do logarithmic plotting for frequency domain
float logSize = math<float>::log( dataSizef );
float x = (float)( (math<float>::log( (float)i) / logSize ) * dataSizef );
float y = math<float>::clamp( freqData[i] * ( x / dataSizef ) * ( math<float>::log( ( dataSizef - (float)i ) ) ), 0.0f, 2.0f );
// Plot points on lines for tme domain
freqLine.push_back( Vec2f( x * scale + 10.0f, -y * ( windowHeight - 20.0f ) * 0.25f + ( windowHeight - 10.0f ) ) );
timeLine.push_back( Vec2f( (float)i * scale + 10.0f, timeData[ i ] * ( windowHeight - 20.0f ) * 0.25f + ( windowHeight * 0.25f + 10.0f ) ) );
}
// Draw signals
gl::draw( freqLine );
gl::draw( timeLine );
}
}