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On 12/18/23 14:53, William F Pokorny wrote:
> I'll dig a more into the code - really not much of it in truth. There is
> a dynamic_cast used in one of the conditional test which is why I wanted
> to be sure windows binaries behaved the same way.
>
> ---
> There is this bit too in the documentation which I don't currently see
> any code for:
>
> "If the parent object is a CSG of objects with different textures, then
> the textures on overlapping parts will be averaged together."
>
> but maybe somehow 'averaging' happens... The test case in this thread
> isn't set up to trigger it. Guess, I'll need to create more complex
> cases. My guess at the moment is we'll get, not 'averaging', but
> multiple individual textures (including any texture lists) from the
> parent's component parts.
Using more or less the same set up, but with union{}s in the
intersection and difference.
With cutaway_textures where the intersection{} and difference{} blocks
themselves don't have textures, the results are different than when the
input is not the CSG union. :-(
And in the difference case I now do see some sort of 'maybe averaging'
happening though I'm unsure of what textures/texture-components; nor do
I have a clue how it's happening internal to POV-Ray at the moment.
The testing combinations explode in number from here :-(
I wonder if I can make intersections and differences using
cutaway_textures without a dedicated block texture illegal in yuqk and
just walk away carrying my bag of blissful ignorance...
Bill P.
Intersection | Difference
------------ | ------------
|
CSG CSG | CSG CSG
BCRG Surface Surface | BCRG Surface Surface
-----|---------|----------|---| | -----|---------|----------|---|
0000 DfltPig DfltPig = | 0000 DfltPig DfltPig = ==
0001 Green DfltPig = | 0001 Green DfltPig = ==
0010 DfltPig Red = | 0010 DfltPig Red = ==
0011 Green Red = | 0011 Green Red = ==
0100 DfltPig DfltPig = | 0100 DfltPig DfltPig = ==
0101 Green DfltPig . | 0101 Green Gre+Ave . ??
0110 DfltPig Red = | 0110 DfltPig Red = ??
0111 Green Red = | 0111 Green Red = ==
1000 Blue Blue = | 1000 Blue Blue = ==
1001 Green Blue = | 1001 Green Blue = ==
1010 Blue Red = | 1010 Blue Red = ==
1011 Green Red = | 1011 Green Red = ==
1100 Blue Blue = | 1100 Blue Blue = ==
1101 Green Blue = | 1101 Green Blue = ==
1110 Blue Red = | 1110 Blue Red = ==
1111 Green Red = | 1111 Green Red = ==
(*) - The Red, Green and Blue in the table above are really similar
unique colors for each element of the union{}s.
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