Chris Huff wrote in message ...
>In article <38b63a7e@news.povray.org>, "Gail Shaw"
><gsh### [at] monotixcoza> wrote:
>
>> The last texture should be layered over the others, instead
>> of just applying to objects without a texture.
>
>That is a good idea, although it would have to be used with a version
>switch. Maybe also provide for switching this off for specific objects,
>something like:
>union {
>    no_layer_over {
>        object {MyObject1 texture {A...}}
>    }
>    object {MyObject2 texture {B...}
>    ...
>
>    texture {C...}
>}
>MyObject1 would have texture A, and only texture A. MyObject2 would have
>texture B with texture C layered over it. This would be nice if you have
>a CSG with dozens of parts and which has one with a different texture.
>no_layer_over(again, can someone please come up with a better keyword?)
>could act like a kind of union, and contain multiple objects. Perhaps it
>could contain the texture for it's objects itself...
>Of course, this would need to be controlled by a #version switch,
>otherwise nearly every CSG ever done will need to be redone.


For backward compatability I would think the other way round would be
better:

union {
 layered_union

  object {A texture {A}}
  object {B texture {B}}
  texture { PartiallyTransparent}
 }
 object {C texture {C}}
}

Gail
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