Hello everyone,
The billboard function is to point towards a location using its Y axis (ex: a direction).
I’m trying to create a billboard that rotates along this arbitrary axis, but always facing the camera.
I have some code that is working in some cases, but i still need a little help to make it fully work.
void BillboardAxis(Vector3 axis)
{
// create the look vector: pos -> camPos
Vector3 look = cam.transform.position - transform.position;
look.Normalize();
// billboard about the direction vector
Vector3 up = axis;
Vector3 right = Vector3.Cross(cam.transform.up,look);
// watch out when the look vector is almost equal to the up vector the right
// vector gets close to zeroed, normalize it
right.Normalize();
// the billboard won't actually face the direction of the look vector we
// created earlier, that was just used as a tempory vector to create the
// right vector so we could calculate the correct look vector from that.
look = Vector3.Cross(right, up);
transform.right = right;
transform.up = up;
transform.forward = look;
}
Best Regards.
