public boolean intersects(Coordinate p0, Coordinate p1) {
Envelope segEnv = new Envelope(p0, p1);
if (!rectEnv.intersects(segEnv)) return false;
li.computeIntersection(p0, p1, corner[0], corner[1]);
if (li.hasIntersection()) return true;
li.computeIntersection(p0, p1, corner[1], corner[2]);
if (li.hasIntersection()) return true;
li.computeIntersection(p0, p1, corner[2], corner[3]);
if (li.hasIntersection()) return true;
li.computeIntersection(p0, p1, corner[3], corner[0]);
if (li.hasIntersection()) return true;
return false;
}