| public static IsConvexQuad ( System.Vector3 a, System.Vector3 b, System.Vector3 c, System.Vector3 d ) : bool | ||
| a | System.Vector3 | |
| b | System.Vector3 | |
| c | System.Vector3 | |
| d | System.Vector3 | |
| 리턴 | bool | |
public static bool IsConvexQuad(Vector3 a, Vector3 b, Vector3 c, Vector3 d)
{
var vector = Vector3.Cross(d - b, a - b);
var vector2 = Vector3.Cross(d - b, c - b);
if (Vector3.Dot(vector, vector2) >= 0f)
{
return false;
}
var vector3 = Vector3.Cross(c - a, d - a);
var vector4 = Vector3.Cross(c - a, b - a);
return (Vector3.Dot(vector3, vector4) < 0f);
}