void checkOrientationIndex(
LineSegment seg, double s0x, double s0y, double s1x, double s1y, int expectedOrient) {
LineSegment seg2 = new LineSegment(s0x, s0y, s1x, s1y);
int orient = seg.orientationIndex(seg2);
assertTrue(orient == expectedOrient);
}
void checkOrientationIndex(LineSegment seg, double px, double py, int expectedOrient) {
Coordinate p = new Coordinate(px, py);
int orient = seg.orientationIndex(p);
assertTrue(orient == expectedOrient);
}
