rect-closest-pt-to-circle.java

private boolean clamp(float value, float min, float max) {
  return Math.max(min, Math.min(max, value));
}

public boolean collides(Rectangle r1, Circle c1) {
  float cx = clamp(c1.x, r1.left(), r1.right());
  float cy = clamp(c1.y, r1.top(), r1.bottom());
  ...
}