Esempio n. 1
0
//--------------------------------------------------------------
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); 
	}

	
}
Esempio n. 2
0
void ParticleTrace :: keyPressed ( int key )
{
	if( key == 't' )
    {
        if( bShowParticleLines )
        {
            saveFBO( fboLines );
        }
        else if( bShowParticleStrip )
        {
            saveFBO( fboStrips );
        }
        else if( bShowParticleType )
        {
            saveFBO( fboType );
        }
    }
}