The Lighting and Surface Properties tutorial says "Objects do not block light sources or cast shadows, so all objects in a scene will be lit evenly by light sources."
Is there any way to change this behavior?
For a simple example I have three polygons, the last one being horizontal (the "ground") and a directional lighting source lighting from directly above, and I would like to interactively change the direction of the light source and observe the shadows cast by the polygons:
Graphics3D[{
Polygon[{{0, 0, 0.4}, {1, 0, 1.4}, {0, 1, 1.4}}],
Polygon[{{-0.2, 0, 0.6}, {0.8, 1, 1.6}, {-0.2, 0.8, 1.6}}],
Polygon[{{-1, -1, 0}, {1, -1, 0}, {1, 1, 0}, {-1, 1, 0}}]},
Boxed -> False, Lighting -> {{"Directional", RGBColor[1, .7, .1], {{0, 0, 1}, {0, 0, 0}}}}]
Thanks for helping this absolute novice Mathematica user!
