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"SGeier" <som### [at] somewherecom> wrote:
> Here's what section 3.4.4 of the documentation shipping with the windows
> verion *actually* says:
> isosurface {
> function { FUNCTION_ITEMS }
> [contained_by { SPHERE | BOX }]
> [threshold FLOAT_VALUE]
> [accuracy FLOAT_VALUE]
> [max_gradient FLOAT_VALUE]
> [evaluate P0, P1, P2]
> [open]
> [max_trace INTEGER] | [all_intersections]
> [OBJECT_MODIFIERS...]
> }
> This tells me that a number of items can occur inside the isosurface{}
> entity. For example [threshold ...] or [contained_by ...] and a whole class
> of [object modifiers]. Nowhere in the docs is any mention that their order
> matters in any way and as a matter of fact some of the examples in the
> tutorial have them in an order different from the above.
Actually, you misread the grammar: As there is no "|" between the
isosurface-specific modifiers and the "[OBJECT_MODIFIERS...]", the grammar
clearly states that putting "all_intersections" after "[OBJECT_MODIFIERS...]" is
not possible.
BTW, that you find at http://www.povray.org/documentation/view/3.6.1/214/ ;-)
Thorsten
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