void ofApp::setup(){
ofSetVerticalSync(false);
ofSetFrameRate(60);
// Create 3 particle emitters
emitters = {ParticleEmitter(), ParticleEmitter(), ParticleEmitter()};
// Setup the particle emitters
for(auto& e : emitters){
e.setup();
}
// Setup the curl noise with the number of particles we want
curlNoise.setup(1024*256);
// Set the noise turbulence
curlNoise.setTurbulence(0.3);
renderShader.load("shaders/render_vert.glsl", "shaders/render_frag.glsl");
// Add 'lifespan' and 'emitterId' attributes to the particle vbo
// (see the shaders for how to use these)
curlNoise.setAttributes(renderShader);
// Setup GUI
parameters.add(curlNoise.parameters);
for(auto& e : emitters){
parameters.add(e.parameters);
}
gui.setup(parameters);
gui.add(fps.setup("Fps:", ""));
gui.minimizeAll();
}
void makeSprinkler () {
particleSystem.removeAllEmitters();
double startOffset;
double sideOffset;
double sideOffsetRange = 0;
double angle = 90;
double angleDiff = 360.0 / emitterCount;
double sideBetweenEmitters = sideOffsetRange / emitterCount;
if (emitterCount % 2 == 0) {
startOffset = ((emitterCount / 2) - 0.5) * emitterSpacing;
sideOffset = ((emitterCount / 2) - 0.5) * sideBetweenEmitters;
} else {
startOffset = ((emitterCount - 1) / 2) * emitterSpacing;
sideOffset = ((emitterCount / 2) - 0.5) * sideBetweenEmitters;
}
Vector3 emitterLocation = Vector3(-startOffset, -20.0, 0);
Vector3 betweenEmitters = Vector3(emitterSpacing, 0, 0);
sideOffset = -sideOffset;
for (int i = 0; i < emitterCount; i++) {
emitterLocation.y = -20 + sin(angle * (M_PI / 180)) * sprinkerHeight;
particleSystem.addEmitter(ParticleEmitter(emitterLocation, Vector3(0.0, -20.0, sideOffset)));
emitterLocation.addSelf(betweenEmitters);
sideOffset += sideBetweenEmitters;
angle += angleDiff;
}
}
void makeFountain () {
emitterSpacing = 0;
particleSystem.removeAllEmitters();
Vector3 emitterLocation = Vector3(0, 0, 0);
double sideOffsetRange = 50;
for (int i = 0; i < emitterCount; i++) {
particleSystem.addEmitter(ParticleEmitter(emitterLocation, Vector3(0.0, -30.0, -sideOffsetRange * std::cos(((360 / emitterCount) * i) * (M_PI / 180)))));
}
}