import processing.core.PApplet; class ProjectorApplet extends PApplet { final int projectorScreenNumber = 2; final static int centerX = 860; final static int centerY = 540; public void settings() { fullScreen(P2D, this.projectorScreenNumber); } @Override public void setup() { clear(); } @Override public void draw() { background(50); fill(255); ellipse(mouseX, mouseY, 10, 10); } }