koobas.hobune.stream
Rotate transform to any touched surface
Can I achieve something like this only with raycasts?
I need to place a quad parallel to a touched face by the user.
Best Answer
Physics.Raycast can output a RaycastHit, which has a normal field that contains the direction of the surface that was hit (as a vector perpendicular to it). You can then use Quaternion.LookRotation to determine the rotation of the quad.
Kinda like this:
RaycastHit hit;
if (Physics.Raycast(ray, out hit)) {
quad.position = hit.point;
quad.rotation = Quaternion.LookRotation(hit.normal, Vector3.up);
}
Depending on which way your quad is facing, you might need to flip the normal vector.
