How do I achieve oblique projection using POV-Ray? I've tried messing around
with the up and right vectors, but have achieved mixed results. Compare the
following two blocks of code:

camera
{
 location -z*(CameraDistance)
 look_at 0
 direction z*(CameraDistance)
 up y*5/2
 right x*5/2
 rotate <asind(tand(30)),45,0>
}

camera
{
 location -z*(CameraDistance)
 look_at 0
 direction z*(CameraDistance)
 up vnormalize(y-z)*5/2
 right x*5/2
 rotate <asind(tand(30)),45,0>
}

The latter results in no difference. Am I on the right track by messing with the
up and right vectors?

-Mike

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