ABX wrote:
>
>I would suggest to change Parse_Object_Mods in parse.cpp to cause above lines
>to be executed as in
>
>transform{
>  rotate z*45
>  rotate z*-45
>}
>
>(Storing transformations in Local_Matrix and applying then on exit from
>Parse_Object_Mods or if some object modifier needs bounding box to be
>specified)
>
>ABX
>

That's not the worst of the problem...  Even if there were only one
transformation eg.

intersection { sphere{...} sphere{...} rotate z*45 }

the final bounding box might not be the tightest, because it assumes that
the rotated spheres are bounded like rotated boxes.  Of course the rotated
sphere is bounded tighter than a rotated box.

The only way to fix this is to compute all the bounding boxes from the
bottom up after all the transformations have been parsed and applied.

Andrew

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