//--------------------------------------------------------------
void testApp::update(){
panel.update();
nIterations = panel.getValueI("N_ITERATIONS");
nNearestNeighborsK = panel.getValueI("N_NEIGHBORS");
nMaxPointsToVisit = nNearestNeighborsK + 6;
totalCycleDurationInIterations = nIterations * 6;
if (!bPause && (iterationCount < nIterations)){
int nToAddPerFrame = panel.getValueI("ADD_PER_FRAME");
//addPositionsProbabilisticallyBasedOnSourceImage (nToAddPerFrame);
addPointsOnTooLongConnections();
applyImageForces();
IppiSize allBufRoi = {nParticles, 1};
// add random forces to velocities
unsigned int pSeed;
float fmax = panel.getValueF("FORCE_NOISE");
ippiAddRandUniform_Direct_32f_C1IR(velocityx, particleStep32f, allBufRoi, -fmax,fmax, &pSeed);
ippiAddRandUniform_Direct_32f_C1IR(velocityy, particleStep32f, allBufRoi, -fmax,fmax, &pSeed);
// multiply velocities by damping factor
Ipp32f damping = panel.getValueF("DAMPING");
Ipp32f progressiveDamping = ofMap(iterationCount, 0,nIterations, 1.0, 0.0, true);
ippiMulC_32f_C1IR(progressiveDamping, velocityx, particleStep32f, allBufRoi);
ippiMulC_32f_C1IR(progressiveDamping, velocityy, particleStep32f, allBufRoi);
// add velocities to positions
ippiAdd_32f_C1IR(velocityx, particleStep32f, positionx, particleStep32f, allBufRoi);
ippiAdd_32f_C1IR(velocityy, particleStep32f, positiony, particleStep32f, allBufRoi);
// clamp positions to acceptable ranges
ippiThreshold_LTValGTVal_32f_C1IR (positionx, particleStep32f, allBufRoi, bounds.x, bounds.x, bounds.x+bounds.width, bounds.x+bounds.width);
ippiThreshold_LTValGTVal_32f_C1IR (positiony, particleStep32f, allBufRoi, bounds.y, bounds.y, bounds.y+bounds.height, bounds.y+bounds.height);
//----------------------------------
updateNearestNeighbors();
updateParticles();
}
iterationCount++;
if (iterationCount == nIterations){
saveFBO(); // DO IT!
}
if (bCycleAutomatically && (iterationCount > totalCycleDurationInIterations)){
initialize(false);
}
}
void ParticleTrace :: keyPressed ( int key )
{
if( key == 't' )
{
if( bShowParticleLines )
{
saveFBO( fboLines );
}
else if( bShowParticleStrip )
{
saveFBO( fboStrips );
}
else if( bShowParticleType )
{
saveFBO( fboType );
}
}
}
