private static bool CoplanarTriangleTriangle(Vector3 N, Vector3 V0, Vector3 V1, Vector3 V2, Vector3 U0, Vector3 U1, Vector3 U2)
{
Vector3 zero = Vector3.zero;
zero[0] = Mathf.Abs(N[0]);
zero[1] = Mathf.Abs(N[1]);
zero[2] = Mathf.Abs(N[2]);
short i;
short i2;
if (zero[0] > zero[1])
{
if (zero[0] > zero[2])
{
i = 1;
i2 = 2;
}
else
{
i = 0;
i2 = 1;
}
}
else if (zero[2] > zero[1])
{
i = 0;
i2 = 1;
}
else
{
i = 0;
i2 = 2;
}
return(TriangleUtils.EdgeAgainstTriangleEdges(V0, V1, U0, U1, U2, (int)i, (int)i2) || TriangleUtils.EdgeAgainstTriangleEdges(V1, V2, U0, U1, U2, (int)i, (int)i2) || TriangleUtils.EdgeAgainstTriangleEdges(V2, V0, U0, U1, U2, (int)i, (int)i2) || TriangleUtils.PointInTriangle(V0, U0, U1, U2, (int)i, (int)i2) || TriangleUtils.PointInTriangle(U0, V0, V1, V2, (int)i, (int)i2));
}
private static bool EdgeAgainstTriangleEdges(Vector3 V0, Vector3 V1, Vector3 U0, Vector3 U1, Vector3 U2, int i0, int i1)
{
float num = 0f;
float num2 = 0f;
float num3 = 0f;
float num4 = 0f;
float num5 = 0f;
float num6 = 0f;
float num7 = 0f;
float num8 = 0f;
float num9 = 0f;
num = V1[i0] - V0[i0];
num2 = V1[i1] - V0[i1];
return(TriangleUtils.EdgeEdgeTest(V0, U0, U1, i0, i1, ref num, ref num2, ref num3, ref num4, ref num5, ref num6, ref num9, ref num8, ref num7) || TriangleUtils.EdgeEdgeTest(V0, U1, U2, i0, i1, ref num, ref num2, ref num3, ref num4, ref num5, ref num6, ref num9, ref num8, ref num7) || TriangleUtils.EdgeEdgeTest(V0, U2, U0, i0, i1, ref num, ref num2, ref num3, ref num4, ref num5, ref num6, ref num9, ref num8, ref num7));
}
public static bool IsPositionInTriangle(Vector3 a, Vector3 b, Vector3 c, Vector3 p, float epsilon)
{
Vector2 barycentricFromPosition = TriangleUtils.GetBarycentricFromPosition(a, b, c, p);
return(barycentricFromPosition.x >= -epsilon && barycentricFromPosition.y >= -epsilon && barycentricFromPosition.x + barycentricFromPosition.y <= 1f + epsilon);
}
public static bool IntersectTriangleTriangle(Vector3 V0, Vector3 V1, Vector3 V2, Vector3 U0, Vector3 U1, Vector3 U2)
{
Vector3 lhs = V1 - V0;
Vector3 rhs = V2 - V0;
Vector3 vector = Vector3.Cross(lhs, rhs);
float num = -Vector3.Dot(vector, V0);
float num2 = Vector3.Dot(vector, U0) + num;
float num3 = Vector3.Dot(vector, U1) + num;
float num4 = Vector3.Dot(vector, U2) + num;
float num5 = num2 * num3;
float num6 = num2 * num4;
if (num5 > 0f && num6 > 0f)
{
return(false);
}
lhs = U1 - U0;
rhs = U2 - U0;
Vector3 vector2 = Vector3.Cross(lhs, rhs);
float num7 = -Vector3.Dot(vector2, U0);
float num8 = Vector3.Dot(vector2, V0) + num7;
float num9 = Vector3.Dot(vector2, V1) + num7;
float num10 = Vector3.Dot(vector2, V2) + num7;
float num11 = num8 * num9;
float num12 = num8 * num10;
if (num11 > 0f && num12 > 0f)
{
return(false);
}
Vector3 vector3 = Vector3.Cross(vector, vector2);
float num13 = Mathf.Abs(vector3[0]);
short index = 0;
float num14 = Mathf.Abs(vector3[1]);
float num15 = Mathf.Abs(vector3[2]);
if (num14 > num13)
{
num13 = num14;
index = 1;
}
if (num15 > num13)
{
index = 2;
}
float vV = V0[(int)index];
float vV2 = V1[(int)index];
float vV3 = V2[(int)index];
float vV4 = U0[(int)index];
float vV5 = U1[(int)index];
float vV6 = U2[(int)index];
float num16 = 0f;
float num17 = 0f;
float num18 = 0f;
float num19 = 0f;
float num20 = 0f;
if (TriangleUtils.ComputeTriangleIntervals(vector, V0, V1, V2, U0, U1, U2, vV, vV2, vV3, num8, num9, num10, num11, num12, ref num16, ref num17, ref num18, ref num19, ref num20))
{
return(TriangleUtils.CoplanarTriangleTriangle(vector, V0, V1, V2, U0, U1, U2));
}
float num21 = 0f;
float num22 = 0f;
float num23 = 0f;
float num24 = 0f;
float num25 = 0f;
if (TriangleUtils.ComputeTriangleIntervals(vector, V0, V1, V2, U0, U1, U2, vV4, vV5, vV6, num2, num3, num4, num5, num6, ref num21, ref num22, ref num23, ref num24, ref num25))
{
return(TriangleUtils.CoplanarTriangleTriangle(vector, V0, V1, V2, U0, U1, U2));
}
float num26 = num19 * num20;
float num27 = num24 * num25;
float num28 = num26 * num27;
float num29 = num16 * num28;
float num30 = num29 + num17 * num20 * num27;
float num31 = num29 + num18 * num19 * num27;
num29 = num21 * num28;
float num32 = num29 + num22 * num26 * num25;
float num33 = num29 + num23 * num26 * num24;
TriangleUtils.Sort(ref num30, ref num31);
TriangleUtils.Sort(ref num32, ref num33);
return(num31 >= num32 && num33 >= num30);
}
