float dim,
vento, vv;
int num;
void setup()
{
size(500, 350);
background(0);
noStroke();
vento=width/10;
vv=height/50;
dim=height/6;
num=width*height/6;
}
void mousePressed()
{
fill(200+random(55), 200+random(55), 0);
}
void draw()
{
if(mousePressed && mouseX < width)
{
float r=random(1, dim);
ellipse(mouseX-r, mouseY, r, r);
}
loadPixels();
for(int i=0; i < num; i++) { // scegli un pixel
int x=int(random(0, width));
int y=int(random(0, height));
color c=pixels[width*y+x]; // copialo da qualche altra parte
x-=int(random(1, vento));
y+=int(random(-vv, +vv));
if(y >= 0 && y < height && x >=0 && x < width)
pixels[width*y+x]=c;
}
updatePixels();
}