No Loop

/** * No Loop. * * The noLoop() function causes draw() to only run once. * Without calling noLoop(), the code inside draw() is * run continually. */ float y = 180; // The statements in the setup() block // run once when the program begins void setup() { size(640, 360); // Size should be the first statement stroke(255); // Set line drawing color to white noLoop(); } // In this example, the code in the draw() block // runs only once because of the noLoop() in setup() void draw() { background(0); // Set the background to black line(0, y, width, y); y = y - 1; if (y < 0) { y = height; } }