Short vsn:

I can't get my lighting to "turn on" WRT to my IndexedTriangleStripArray
(a "mesh" style terrain) and NormalsGenerator.

Code snippet:

  IndexedTriangleStripArray terrain =
     new IndexedTriangleStripArray (vCount,
        IndexedTriangleStripArray.COORDINATES,
        iCount,
        siCounts
        );
  // Set up coordinates
     [snip]
  // set up indecies
     [snip]

  GeometryInfo gi = new GeometryInfo (terrain);
  NormalGenerator ng = new NormalGenerator();
  ng.generateNormals (gi);

  gi.recomputeIndices();

I've verified that lighting is on by placing a few spheres around the
terrain, and they light correctly.  In addition, the terrain displays
correctly and, in fact, even textures nicely (different bit of code.)

Btw, for lighting-testing, I'm turning off textures, as that seems to
interfere with lighting on my test-spheres.  (Different question :)

Any hints?

Thanks!