Hello all, i wonder if you can help me with a problem im having.
I have a disc and three planes (representing a road, building and roof). For this problem, the disc can be considered a plane.
I know the orientation of each of the planes. The disc is orientated 45horizontal x 45vertical. I can caluate surface normals for each element. With these I can calculate the dihedral angle between the disc and the road, and also the disc and the building, but what im really looking to find is when looking directly at a vertical surface (middle image) what angle does the plane make on the vertical surface? Its approx 35^ in this case.
This is really bugging me, i'm sure theres an easy way of doing this.
Thanks in advance.