public static bool TestIntersection(this Bounds bounds, BoundaryRect rect)
{
if (bounds is BoundaryCircle)
{
return rect.TestIntersection(bounds as BoundaryCircle);
}
else if (bounds is BoundaryRect)
{
return rect.TestIntersection(bounds as BoundaryRect);
}
else
{
throw new InvalidOperationException("Attempting to test boundary on unknown types");
}
}
public static bool DoesCircleIntersectRect(BoundaryRect rect, BoundaryCircle circle)
{
// 2 cases:
// case 1: the center of the circle is within the rect
// case 2: the rectange has an edge that intersects the circle
if (rect.ContainsPoint(circle.Center))
{
return true;
}
else
{
return rect.Top.TestIntersection(circle) ||
rect.Bottom.TestIntersection(circle) ||
rect.Left.TestIntersection(circle) ||
rect.Right.TestIntersection(circle);
}
}
public static bool TestIntersection(this BoundaryCircle circle, BoundaryRect rect)
{
return DoesCircleIntersectRect(rect, circle);
}
