Processing transition

//Particle p1, p2, p3, p4;

//Particle[] p = new Particle[1000]; // //Particle lonelyParticle;

ArrayList particles;

void setup () { size(400, 600); background(20,20,120); particles = new ArrayList(); }

void draw () { background(20,20,120);

for (int i= particles.size ()-1; i >= 0; i--) { Particle p = (Particle) particles.get(i); p.update(); p.display();

if (p.a <0) {
  particles.remove(i);
} else if (p.y >= height) {
  p.ySpeed = (-p.ySpeed)*random(0.2,0.6);
}

}

// randomSeed(10);

for (int i = width/2-50; i<width/2+50; i+=5) { particles.add(new Particle(-1, 1, 1, 2, i, 0)); } }

void mouseDragged() { particles.add(new Particle(-1, 1, -5, 1, width/2, height)); }

class Particle { float x; float y; float size; float xSpeed; float ySpeed; int a; float randStart;

//CREATE CONSTRUCTOR Particle(float xMin, float xMax, float yMin, float yMax, float xStart, float yStart) { x = xStart; y = yStart; size = random(2, 10); xSpeed = random(xMin, xMax); ySpeed = random(yMin, yMax); a = 200; randStart = random(.1, .5); }

//update function void update() {

//gravity -- CAN BE USED FOR OTHER ACCELERATION!!!
ySpeed += 0.20;

x += xSpeed;
y += ySpeed;
a--;

}

//display function void display() {

float totalSpeed = abs(xSpeed)+abs(ySpeed);
float r = map(totalSpeed, 0, 5, 0, 100);
float g = map(totalSpeed, 0, 5, 100, 150);
float b = map(totalSpeed, 0, 5, 200, 255);
float aSine = map(sin((frameCount)*randStart), -1, 1, 50, 255);

noStroke();

fill(r, g, b, a);
//noSmooth();
ellipse(x, y, size, size);

fill(255, aSine);
ellipse(x-2, y-2, size-4, size-4);

} }