RobynsVeil opened this issue on Jan 24, 2009 · 490 posts
RobynsVeil posted Sun, 25 January 2009 at 7:53 PM
Sorry, but that is probably the main obstacle to accepting that vector concept. Or, then, do I work backward from the surface to deal with that arrow? Doesn't matter where it's coming from, but we know the length (1) of the vector and thus can sort out the angle of arriving energy using your formula cos(angle between L and N) = Nx * Lx + Ny * Ly + Nz * Lz?
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