/// <summary>
/// Computes the forward, right and up vectors from the original hit normal.
/// </summary>
/// <param name="hitNormal"></param>
private void ComputeAllAxisFromHitNormal(Vector3 hitNormal)
{
bool normalAproxWorldUp = Maths.ApproxByComponents(hitNormal, Vector3.up);
// if the hit normal matches with the world up just match the world axis
if (normalAproxWorldUp)
{
up = Vector3.up;
right = Vector3.right;
fwd = Vector3.forward;
return;
}
// Note: we are considering that objects will be rotated only either in the X axis or Z axis
bool zCompGreater = Mathf.Abs(hitNormal.z) >= Mathf.Abs(hitNormal.x);
if (zCompGreater)
{
up = new Vector3(0.0f, hitNormal.y, hitNormal.z).normalized;
}
else
{
up = new Vector3(hitNormal.x, hitNormal.y, 0.0f).normalized;
}
if (zCompGreater)
{
right = Vector3.Cross(Vector3.up, up).normalized *Mathf.Sign(hitNormal.z);
fwd = Vector3.Cross(right, up).normalized;
}
else
{
fwd = Vector3.Cross(up, Vector3.up).normalized *Mathf.Sign(hitNormal.x);
right = Vector3.Cross(up, fwd).normalized;
}
}