"Bald Eagle" <cre### [at] netscapenet> wrote:
> I'm dabbling with a height_field, and when I scale the object (y*30), POV-Ray
> seems to delight in driving me BSC by translating the heightfield as well.
>
> I could probably spend a lot of time deriving and defining this behaviour, but
> could someone explain the ins & outs of why some things just get scaled, and
> other seem to get translated as well?

height_field objects are constructed from <0,0,0> to <1,0,1> so you need to
translate the object by <-0.5, 0.0, -0.5> before scaling.

The same is true for the image_map pattern, except that it is in the x,y plane
instead of the x,z plane.

Regards,
A.D.B.

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