/** * Distance 2D. * * Move the mouse across the image to obscure and reveal the matrix. * Measures the distance from the mouse to each square and sets the * size proportionally. */ float max_distance; void setup() { size(640, 360); noStroke(); max_distance = dist(0, 0, width, height); } void draw() { background(0); for(int i = 0; i <= width; i += 20) { for(int j = 0; j <= height; j += 20) { float size = dist(mouseX, mouseY, i, j); size = size/max_distance * 66; ellipse(i, j, size, size); } } }