Bezier

/**
 * Bezier. 
 * 
 * The first two parameters for the bezier() function specify the 
 * first point in the curve and the last two parameters specify 
 * the last point. The middle parameters set the control points
 * that define the shape of the curve. 
 */

void setup() {
    size(640, 360); 
    stroke(255);
    noFill();
}

void draw() {
    background(0);

    for (int i = 0; i < 200; i += 20) {
        bezier(
            mouseX - (i / 2.0), 40 + i,
            410, 20,
            440, 300,
            240 - (i / 16.0), 300 + (i / 8.0)
        );
    }
}