public static bool TestOverlapEdge(LineMask lnMask, FPInt x, FPInt y)
{
PointFP cp = lnMask.ClosestPoint(new PointFP(x, y));
return x == cp.X && y == cp.Y;
}
public static bool TestOverlap(CircleMask cMask, LineMask lnMask)
{
VectorFP c = (VectorFP)cMask._pos + cMask._p;
VectorFP p = lnMask.ClosestPoint(c);
p = p - c;
FPInt p2 = p.LengthSquared();
FPInt r2 = cMask._radius * cMask._radius;
return (p2 < r2);
}