static inline bool IsColliding( Rect rect,Circle circle, double angle ){
// Rotate circle's center point back
float centerX = rect.GetXCenter();
float centerY = rect.GetYCenter();
double unrotatedCircleX = cos(angle) * (circle.x - centerX) - sin(angle) * (circle.y - centerY) + centerX;
double unrotatedCircleY = sin(angle) * (circle.x - centerX) + cos(angle) * (circle.y - centerY) + centerY;
double closestX, closestY;
if (unrotatedCircleX < rect.x)
closestX = rect.x;
else if (unrotatedCircleX > rect.x + rect.w)
closestX = rect.x + rect.w;
else
closestX = unrotatedCircleX ;
// Find the unrotated closest y point from center of unrotated circle
if (unrotatedCircleY < rect.y)
closestY = rect.y;
else if (unrotatedCircleY > rect.y + rect.h)
closestY = rect.y + rect.h;
else
closestY = unrotatedCircleY;
// Determine collision
double distance = Point(unrotatedCircleX , unrotatedCircleY).GetDistance(Point(closestX, closestY));
if (distance < circle.r)
return true;
else
return false;
};
