I'm doing line-triangle intersection. I have found the intersection point (vector) on the plane. All I need to do now is work out whether the point is inside the triangle it collided with (not the plane the tri is on)
The line is represented by two 3D vectors, the triangle 3 points and the collision point another vector. If it's any help, I've been reading through this article. I've actually managed to do most of it. I'm just stuck on the last bit which is working out whether the point is inside the triangle.
I've read stuff about summing the angles of 3 internal triangles, but that's extraordinarily slow - can someone help me out?