Datasheet

{

size(500, 500, P3D);

colorMode(HSB, 100);

texture = loadImage("ring.png");

opc = new OPC(this, "127.0.0.1", 7890);

opc.ledGrid8x8(0, width/2, height/2, height / 16.0, 0, false);

// We can have up to 100 rings. They all start out invisible.

rings = new Ring[100];

for (int i = 0; i < rings.length; i++) {

rings[i] = new Ring();

}

void draw()

{

background(0);

// Smooth out the mouse location. The smoothX and smoothY variables

// move toward the mouse without changing abruptly.

float prevX = smoothX;

float prevY = smoothY;

smoothX += (mouseX - smoothX) * 0.1;

smoothY += (mouseY - smoothY) * 0.1;

// At every frame, randomly respawn one ring

rings[int(random(rings.length))].respawn(prevX, prevY, smoothX, smoothY);

// Give each ring a chance to redraw and update

for (int i = 0; i < rings.length; i++) {

rings[i].draw();

}

And that's it! You can see the complete source code for this example (http://adafru.it/cWe)

in GitHub.