ANIMATION
import java.awt.Rectangle;
ArrayList particles;
Rectangle blackhole;
void setup(){
size(600,400);
pixelDensity(2);
particles=new ArrayList();
blackhole=new Rectangle(60,height-100,width-120,30);
}
void draw(){
background(255);
//Create a new particle once a circle
particles.add(new Particle(mouseX,mouseY));
fill(200);
rect(blackhole.x, blackhole.y,blackhole.width,blackhole.height);
for(int i=0;i<particles.size();i++){
Particle p=(Particle)particles.get(i);
p.display();
if(!blackhole.contains(p.x,p.y)){
p.move();
}
}
if(particles.size()>1000){
particles.remove(0);
}
saveFrame("frames/Particle####.jpg");
}
class Particle {
float x, y, r;
float c;
float spx,spy;
Particle(float x_, float y_) {
x=x_;
y=y_;
r=15;
c=random(10,50);
spx=random(-1,1);
spy=random(-4,0);
}
void display() {
fill(255,c*5,c, c);
noStroke();
ellipse(x, y, r*2, r*2);
}
void move() {
if (y<height-r) {
x+=spx;
y+=spy;
spy+=0.1;
}
}
}
