Processing: Creative Coding and Computational Art

PROCESSING: CREATIVE CODING AND COMPUTATIONAL ART
258
//particle limits
int timeLimit = 1000;
int particleCount = 100;
int[]particleLimits = { timeLimit, particleCount };
//particle dynamics
float amplitudeMin = .5;
float amplitudeMax = 4.0;
float frequencyMin = 4.0;
float frequencyMax = 40.0;
float materialMin = .25; // lead
float materialMax = .99; // rubber
float[]particleDynamics = { amplitudeMin, amplitudeMax, ➥
frequencyMin, frequencyMax, materialMin, materialMax};
// speed limits
float accelMin = .005;
float accelMax = .2;
float xSpeedMin = -2.0;
float xSpeedMax = 2.0;
float[]speedLimits = { xSpeedMin, xSpeedMax, ➥
accelMin, accelMax };
float gravity = .85;
//position of particle emitter
float emitterX = width/2;
float emitterY = 0;
float[]world = { gravity, emitterX, emitterY };
//start particle engine
setParticles(strokeStyle, particleLimits, ➥
particleDynamics, speedLimits, world);
}
// main particle engine - fully parameterized
void setParticles(float[]strokeStyle, int[]particleLimits,
float[]particleDynamics, float[]speedLimits, float[]world){
//create arrays
float[]xSpeed = new float[particleLimits[1]];
float[]ySpeed = new float[particleLimits[1]];
float[]accel = new float[particleLimits[1]];
float[]x = new float[particleLimits[1]];
float[]y = new float[particleLimits[1]];
float[]amplitude = new float[particleLimits[1]];
float[]frequency = new float[particleLimits[1]];
float[]material = new float[particleLimits[1]];