[solved] Parent is not apparently illuminated by light source, but its children are

[Epihaius]

@ekiefl

Probably what’s going on is that I’m borrowing some code from samples/procedural-cube/main.py .

Ugh, that thing again… no wonder. (Sorry, that sample is kinda my pet peeve.)

@ekiefl

Since I don’t see anything about normal vectors, that’s gotta be the problem, right?

It does generate normal vectors:

    normal = GeomVertexWriter(vdata, 'normal')
...
        normal.addData3(normalize(2 * x1 - 1, 2 * y1 - 1, 2 * z1 - 1))
        normal.addData3(normalize(2 * x2 - 1, 2 * y1 - 1, 2 * z1 - 1))
        normal.addData3(normalize(2 * x2 - 1, 2 * y2 - 1, 2 * z2 - 1))
        normal.addData3(normalize(2 * x1 - 1, 2 * y2 - 1, 2 * z2 - 1))

But they always point away from the center of the cube (that the square is supposed to be a side of), while they should be perpendicular to the square in this case. Just one of the reasons I don’t like that sample.
If you’re interested in procedural geometry, feel free to check this out. (Shameless plug, sorry (again) .)

@ekiefl

I will try the CardMaker class, since it probably more than suffices for my needs.

If you’re going with CardMaker, note that it generates its rectangles in the XZ-plane, so you’ll have to do:

        playing_surface.set_p(-90.)

Cheers!