public void setup() {
size(displayWidth, displayHeight - 100);
frameRate(50);
controllers(); // comment this line out once force coefficients are determined
tspsReceiver = new TSPS(this, 12000); // set up UDP port for TSPS
physics = new VerletPhysics2D(); // set up physics "world"
wind = 0;
grav = new Vec2D(wind, gravY); // set up gravity vector for gravityForce
gravityForce = new GravityBehavior(grav); // sets up the gravity force
physics.addBehavior(gravityForce); // adds gravity force to particle system
attractors = new ArrayList<Attractor>(); // create arraylist of attractors
circles = new ArrayList<Circle>(); // create the ArrayList of circles
for (int i = 0; i < numCircles; i++) {
circles.add(new Circle(new Vec2D(random(0, width), random(-height, height))));
}
}
public void draw() {
background(255);
fill(cp.getColorValue());
rect(0, 0, width, height);
windUpdate();
gravityForce.setForce(grav.set(wind, gravY)); // update gravityForce
physics.setDrag(drag); // update drag
physics.update(); // update the physics world
// update and display circles
for (Circle c : circles) {
c.circUpdate();
c.display();
if (c.y > (height + 20)) {
c.lock();
c.set(random(width), random(-height, -40));
c.unlock();
} else if (c.age > deathAge) {
c.lock();
c.set(random(width), random(-height, -40));
c.unlock();
}
}
// -------------------- person tracking section ---------------------
// set up array of people from TSPS
TSPSPerson[] people = tspsReceiver.getPeopleArray();
Vec2D personLoc = new Vec2D(0, 0);
peopleLength = people.length;
// add attractors
for (int i = attractors.size(); i < people.length; i++) {
TSPSPerson person = people[i];
personLoc = new Vec2D(person.centroid.x * width, (person.centroid.y * height + yOff));
attractors.add(new Attractor(personLoc, width, attStrength));
}
// add behaviors
for (int i = 0; i < attractors.size(); i++) {
Attractor a = attractors.get(i);
physics.addBehavior(a.att());
}
// update and display attractors
for (int i = 0; i < people.length; i++) {
TSPSPerson person = people[i];
Attractor a = attractors.get(i);
a.update(person.centroid.x * width, (person.centroid.y * height + yOff));
// a.display(); //comment out this line for display
}
// remove attractors
for (int i = attractors.size() - 1; i > people.length; i--) {
Attractor a = attractors.get(i);
a.killBurst();
attractors.remove(a);
}
// remove behaviors
for (int i = physics.behaviors.size() - 1; i > people.length; i--) {
ParticleBehavior2D b = physics.behaviors.get(i);
physics.removeBehavior(b);
}
// playing it safe and removing everything if people array is empty
if (people.length == 0) {
for (int i = physics.behaviors.size() - 1; i > 0; i--) {
ParticleBehavior2D b = physics.behaviors.get(i);
physics.removeBehavior(b);
}
attractors.clear();
}
// debugging
println("people: " + people.length);
println("behaviors" + physics.behaviors.size());
println("framerate: " + frameRate);
hideControls();
}