mirror command and raytrace bug

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2012-05-15
2013-04-22
  • I used the mirror command today. It worked great when looking at the wire frame drawing.
    But, when I used raytrace to draw a nice image, the mirrored object disappeared! I also had a non-mirrored item in the scene, which was drawn OK.

    I have attached a simple test case with three objects.

    arb4             - a simple quadralateral
    arb4.f           - a bot made with: "facetize arbf.4 arb4"
    mirTst.c/       - a combination with arb4.f
    mirTstMir.c/  - Initially created with: "mirror mirTst.c mirTstMir.c z" then mirTst.c was added.

    command: "B mirTstMir.c" displays both mirrored and no mirrored versions.
    But, the raytrace output only shows the un-mirrored object.

    Is there a solution to this problem?

    Gilligan

    the files: (I was going to attach a .g file, but apparently, that feature went away??)

    arb4:  ARB4
    1 (0.158203, -4.31592, -13.5)
    2 (13.5, 16, -13.5)
    3 (13.5, 16, 13.5)
    4 (-8.38477, 5.36084, -13.5)

    arb4.f:  Bag of triangles (BOT)
    4 vertices, 4 faces (counter-clockwise)
    This is a solid object (not just a surface)
    face 0: (0.158203 -4.31592 -13.5) (13.5 16 13.5) (-8.38477 5.36084 -13.5)
    face 1: (0.158203 -4.31592 -13.5) (-8.38477 5.36084 -13.5) (13.5 16 -13.5)
    face 2: (13.5 16 -13.5) (-8.38477 5.36084 -13.5) (13.5 16 13.5)
    face 3: (13.5 16 -13.5) (13.5 16 13.5) (0.158203 -4.31592 -13.5)

    mirTst.c:  -
       u arb4.f

    mirTstMir.c:  -
       u arb4.f az=180, el=0,  scale 1
       u mirTst.c