public override object Clone()
{
CircleMask mask = new CircleMask(_p, _radius);
mask._pos = _pos;
return mask;
}
public static bool TestOverlap(CircleMask cMask, FPInt x, FPInt y)
{
VectorFP p1 = (VectorFP)cMask._pos + cMask._p;
FPInt dx = p1.X - x;
FPInt dy = p1.Y - y;
FPInt d2 = dx * dx + dy * dy;
FPInt r2 = cMask._radius * cMask._radius;
return (d2 < r2);
}
public static bool TestOverlap(CircleMask cMask1, CircleMask cMask2)
{
VectorFP p0 = (VectorFP)cMask1._pos + cMask1._p;
VectorFP p1 = (VectorFP)cMask2._pos + cMask2._p;
FPInt dx = p1.X - p0.X;
FPInt dy = p1.Y - p0.Y;
FPInt d2 = dx * dx + dy * dy;
FPInt r = cMask1._radius + cMask2._radius;
FPInt r2 = r * r;
return (d2 < r2);
}
// Circle -- [____] Collision Tests
public static bool TestOverlap(CircleMask cMask, PointMask ptMask)
{
return TestOverlap(ptMask, cMask);
}
public static bool TestOverlapEdge(PointMask ptMask, CircleMask cMask)
{
VectorFP p0 = (VectorFP)ptMask._pos + ptMask._point;
return TestOverlapEdge(cMask, p0.X, p0.Y);
}
public static bool TestOverlap(TriangleMask triMask, CircleMask cMask)
{
return TestOverlap(cMask, triMask);
}
public static bool TestOverlap(AABBMask rMask, CircleMask cMask)
{
return TestOverlap(cMask, rMask);
}
public static bool TestOverlap(LineMask lnMask, CircleMask cMask)
{
return TestOverlap(cMask, lnMask);
}
public static bool TestOverlap(AYLine ylMask, CircleMask cMask)
{
return TestOverlap(cMask, ylMask);
}
public static bool TestOverlap(AXLine xlMask, CircleMask cMask)
{
return TestOverlap(cMask, xlMask);
}
public static bool TestOverlap(CircleMask cMask, TriangleMask triMask)
{
VectorFP p0 = (VectorFP)cMask._pos + cMask._p;
VectorFP p1 = triMask.ClosestPoint(p0);
FPInt dx = p1.X - p0.X;
FPInt dy = p1.Y - p0.Y;
FPInt d2 = dx * dx + dy * dy;
FPInt r2 = cMask._radius * cMask._radius;
return (d2 < r2);
}
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);
}
public static bool TestOverlap(CircleMask cMask, AYLine yl)
{
VectorFP c1 = (VectorFP)cMask._pos + cMask._p;
VectorFP c2 = yl.ClosestPoint(c1);
FPInt d2 = VectorFP.DistanceSquared(c1, c2);
FPInt r2 = cMask._radius * cMask._radius;
return (r2 < d2);
}