>Seems like you use one transformation for points, vectors and normals,

Thanks, point taken. Makes sense :)

>Other problem, which I found, is in transformation code: e.g. in method
>CVector::VInverseTransform you modify first x value of vector, then use
>this modified value to calculate y and then use modified x and y to
>calculate z. This leads to wrong result, of course. Instead you should
>cache current values for x, y and z and then calculate new values by
>using these cached values.

*slaps head*

Of course! OMG this is such a blatantly stupid mistake! Thanks for
pointing it out.

>Correct these errors and I guess that most transformation problems will
>disappear.

Unfortunately, no. Even if I remove any and all transformation code
from CBox::Intersect (or CSphere::Intersect) and only use
untransformed primitives, they render incorrectly.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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