This function returns true if the given ray intersects a box of size s with a placement determined by the current geometry transformations applied to the scene. The ray can be automatically computed from the screen coordinates as in the following example:
void setup() { fullScreen(P3D); } void draw() { background(200, 0, 150); translate(width/2, height/2); if (mousePressed && intersectsSphere(70, 0, 0)) fill(0, 0, 255); else fill(255, 0, 0); box(70); } A ray with arbitrary origin and direction can also be provided:
PVector origin = new PVector(); PVector direction = new PVector(); void setup() { fullScreen(P3D); } void draw() { origin.set(width/2, height/2, 0); direction.set(-width/2, -height/2).normalize(); background(200, 0, 150); translate(width/2, height/2); if (mousePressed && intersectsSphere(70, origin, direction)) fill(0, 0, 255); else fill(255, 0, 0); box(70); } The function accepts different width/height/depth values for the box:
void draw() { // ... translate(width/2, height/2); if (mousePressed && intersectsBox(100, 120, 80, origin, direction)) fill(0, 0, 255); else fill(255, 0, 0); box(100, 120, 80); }