public static ESplitType ClassifyPointToPlane(SplitPlane plane, LVector2 vertex)
{
var val = LVector2.Cross(plane.dir, vertex - plane.a);
if (val == 0)
{
return(ESplitType.OnPlane);
}
else
{
return(val < 0 ? ESplitType.Right : ESplitType.Left);
}
}
private void TestLVector2()
{
LVector2 v1 = new LVector2(3.3d, 1.2d);
LVector2 v2 = new LVector2(1.2d, 3.3d);
AssertTrue(v1 != v2);
AssertFalse(v1 == v2);
AssertTrue(v1 + v2 == new LVector2(4.5d, 4.5d));
AssertTrue(v1 - v2 == new LVector2(2.1d, -2.1d));
AssertTrue(v1 * 2 == new LVector2(6.6d, 2.4d));
AssertTrue(v1 / 3 == new LVector2(1.1d, 0.4d));
AssertTrue(LVector2.zero.normalized == LVector2.zero);
AssertTrue(LVector2.Dot(v1, v2) == 7.92d);
Debug.Log(v1.sqrMagnitude);
Debug.Log(v1.magnitude);
Debug.Log(v1.normalized);
Debug.Log(LVector2.Cross(v1, v2));
Debug.Log("----------------------");
}
public static ESplitType GetSplitResult(SplitPlane plane, TriRef tri)
{
var planeDir = plane.dir;
var valA = LVector2.Cross(planeDir, tri.a - plane.a);
var valB = LVector2.Cross(planeDir, tri.b - plane.a);
var valC = LVector2.Cross(planeDir, tri.c - plane.a);
var isRight = false;
if (valA != 0)
{
isRight = valA < 0;
}
if (valB != 0)
{
isRight = valB < 0;
}
if (valC != 0)
{
isRight = valC < 0;
}
var isA = valA <= 0;
var isB = valB <= 0;
var isC = valC <= 0;
if (isA == isB && isB == isC)
{
return(isRight ? ESplitType.Right : ESplitType.Left);
}
isA = valA >= 0;
isB = valB >= 0;
isC = valC >= 0;
if (isA == isB && isB == isC)
{
return(isRight ? ESplitType.Right : ESplitType.Left);
}
return(ESplitType.OnPlane);
}
public bool Contain(LVector2 pos)
{
var isRightA = LVector2.Cross(b - a, pos - a) > 0;
if (isRightA)
{
return(false);
}
var isRightB = LVector2.Cross(c - b, pos - b) > 0;
if (isRightB)
{
return(false);
}
var isRightC = LVector2.Cross(a - c, pos - c) > 0;
if (isRightC)
{
return(false);
}
return(true);
}
public LFloat Cross(LVector2 v)
{
return(LVector2.Cross(this, v));
}