public override object Clone()
{
TriangleMask mask = new TriangleMask(_p0, _p1, _p2);
mask._pos = _pos;
return mask;
}
public static bool TestOverlapEdge(TriangleMask triMask, AYLine ylMAsk)
{
return TestOverlapEdge(ylMAsk, triMask);
}
public static bool TestOverlapEdge(AYLine ylMask, TriangleMask triMask)
{
VectorFP a = (VectorFP)triMask._pos + triMask._p0;
VectorFP b = (VectorFP)triMask._pos + triMask._p1;
VectorFP c = (VectorFP)triMask._pos + triMask._p2;
if (ylMask.IntersectsLineEdge(a, b) || ylMask.IntersectsLineEdge(b, c) || ylMask.IntersectsLineEdge(a, c)) {
return true;
}
VectorFP q = triMask.Barycentric(ylMask.TopPoint);
return (q.X >= 0 && q.Y >= 0 && (q.X + q.Y) <= 1);
}
public static bool TestOverlap(PointMask ptMask, TriangleMask triMask)
{
PointFP bary = triMask.Barycentric((VectorFP)ptMask._pos + ptMask._point);
return (bary.X > 0 && bary.Y > 0 && (bary.X + bary.Y) < 1);
}
public static bool TestOverlapEdge(TriangleMask triMask, FPInt x, FPInt y)
{
PointFP bary = triMask.Barycentric(new VectorFP(x, y));
return (bary.X >= 0 && bary.Y >= 0 && (bary.X + bary.Y) <= 1);
}
public static bool TestOverlap(TriangleMask triMask1, TriangleMask triMask2)
{
VectorFP a = (VectorFP)triMask2._pos + triMask2._p0;
VectorFP b = (VectorFP)triMask2._pos + triMask2._p1;
VectorFP c = (VectorFP)triMask2._pos + triMask2._p2;
VectorFP d = (VectorFP)triMask1._pos + triMask1._p0;
VectorFP e = (VectorFP)triMask1._pos + triMask1._p1;
VectorFP f = (VectorFP)triMask1._pos + triMask1._p2;
if (LineMask.IntersectsLine(a, b, d, e) || LineMask.IntersectsLine(a, b, e, f) ||
LineMask.IntersectsLine(a, b, d, f) || LineMask.IntersectsLine(b, c, d, e) ||
LineMask.IntersectsLine(b, c, e, f) || LineMask.IntersectsLine(b, c, d, f) ||
LineMask.IntersectsLine(a, c, d, e) || LineMask.IntersectsLine(a, c, e, f))
{
return true;
}
// Check for containment
VectorFP q = triMask2.Barycentric(d);
if (q.X >= 0 && q.Y >= 0 && (q.X + q.Y) <= 1) {
return true;
}
q = triMask1.Barycentric(a);
return (q.X >= 0 && q.Y >= 0 && (q.X + q.Y) <= 1);
}
public static bool TestOverlap(TriangleMask triMask, AABBMask rMask)
{
return TestOverlap(rMask, triMask);
}
public static bool TestOverlap(TriangleMask triMask, LineMask lnMask)
{
return TestOverlap(lnMask, triMask);
}
public static bool TestOverlap(TriangleMask triMask, AYLineMask ylMask)
{
return TestOverlap(ylMask, triMask);
}
public static bool TestOverlap(TriangleMask triMask, AXLine xlMAsk)
{
return TestOverlap(xlMAsk, triMask);
}
public static bool TestOverlap(TriangleMask triMask, CircleMask cMask)
{
return TestOverlap(cMask, triMask);
}
// Triangle -- [____] Collision Tests
public static bool TestOverlap(TriangleMask triMask, PointMask ptMask)
{
return TestOverlap(ptMask, triMask);
}
public static bool TestOverlap(AABBMask rMask, TriangleMask triMask)
{
VectorFP a = (VectorFP)triMask._pos + triMask._p0;
VectorFP b = (VectorFP)triMask._pos + triMask._p1;
VectorFP c = (VectorFP)triMask._pos + triMask._p2;
if (rMask.IntersectsLine(a, b) || rMask.IntersectsLine(b, c) || rMask.IntersectsLine(a, c)) {
return true;
}
VectorFP r = rMask._pos + new VectorFP(rMask._point.X + (rMask._w >> 1), rMask._point.Y + (rMask._h >> 1));
VectorFP q = triMask.Barycentric(r);
return (q.X >= 0 && q.Y >= 0 && (q.X + q.Y) <= 1);
}
public static bool TestOverlap(LineMask lnMask, TriangleMask triMask)
{
VectorFP a = (VectorFP)triMask._pos + triMask._p0;
VectorFP b = (VectorFP)triMask._pos + triMask._p1;
VectorFP c = (VectorFP)triMask._pos + triMask._p2;
//TestResult t = lnMask.LineIntersect(a, b);
if (lnMask.IntersectsLine(a, b) || lnMask.IntersectsLine(b, c) || lnMask.IntersectsLine(a, c)) {
return true;
}
// Check for containment
VectorFP r = triMask.Barycentric((VectorFP)lnMask._pos + lnMask._p0);
return (r.X >= 0 && r.Y >= 0 && (r.X + r.Y) <= 1);
}
public static bool TestOverlap(AXLineMask xlMask, TriangleMask triMask)
{
VectorFP a = (VectorFP)triMask._pos + triMask._p0;
VectorFP b = (VectorFP)triMask._pos + triMask._p1;
VectorFP c = (VectorFP)triMask._pos + triMask._p2;
if (xlMask.IntersectsLine(a, b) || xlMask.IntersectsLine(b, c) || xlMask.IntersectsLine(a, c)) {
return true;
}
VectorFP q = triMask.Barycentric((VectorFP)xlMask._pos + xlMask._p);
return (q.X >= 0 && q.Y >= 0 && (q.X + q.Y) <= 1);
}
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);
}