More Render tweaks, good progress, new bug

Strips scale correct now. Found ok level of detail without killing fps
completely, though optimizations could be found.

One tip suggests to tweak browser settings to draw textures better,
although I do not know if I can do that for other's browsers in script.

Current bug though.  3 ray test not behaving quite right, and rays are
not obscured when expected. I think the angle of the ray is not what I
think it is, like too far out to the sides.

Displaying the actual angles at ray trace time might help debug, or
drawing the actual rays somehow.