63 static const double EPSILON = 1e-7;  variable
222     return (bx - ax) * (cy - ay) - (by - ay) * (cx - ax) > EPSILON;  in ccw()
301                 if (delta.lengthSquared() < EPSILON) {  in intersection()
334         if (delta.lengthSquared() >= EPSILON) {  in intersection()
519     if (((x - x1) * (x - x2) > EPSILON)  in lineIntersection()
520         || ((x - x3) * (x - x4) > EPSILON)  in lineIntersection()
521         || ((y - y1) * (y - y2) > EPSILON)  in lineIntersection()
522         || ((y - y3) * (y - y4) > EPSILON)) {  in lineIntersection()
813     int rayIndex = floor((startAngle - EPSILON) / step);  in convertPolyToRayDist()
829         int firstRayIndexOnNextSegment = floor((currentAngle - EPSILON) / step);  in convertPolyToRayDist()
1590         bool isCCWOrCoLinear = (delta >= EPSILON);  in testConvex()