Subject:
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Re: Line in the Sand
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Newsgroups:
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lugnet.cad.dev
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Date:
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Tue, 14 Dec 1999 17:14:55 GMT
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Viewed:
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2689 times
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In lugnet.cad.dev, Lars C. Hassing wrote:
> If IsTransparent(Color) Then AccumClip = FALSE
> takes care of solid non-16 colors (decorations) in parts used transparently.
> And a similar check added to BFC() can take care of transparent non-16
> colors in parts used as solids.
> So the logic is OK again.
Yes, it would render correctly, but it would also disable clipping more often
than is required, in the case of mixed solid and transparent sections. Think of
a submodel where the author used color 16, and the person using the submodel
renders it as transparent. If clipping is turned off at the start of the
submodel, then no part in that submodel could be BFC-ed, even if they were
solid-colored.
> On second thoughts I don't think we need double-sided sections for decorations.
> If a rendering program wishes to use BFC together with dither-transparency, it
> can easily investigate whether there are non-16 colors in a transparent part.
>
> We should not put an unnecessary rule on the part author.
I agree with not putting unnecessary rules on authors. I don't agree on
renderers being required to find the solid colors in a transparent part.
> I mean the inner surface. Like the "internal surface" of a sweater or a stocking.
> If you don't have a similar noun/substantive/notion in English I can understand
> why the subject is difficult to discuss, because we think/conceive differently
> (as our spoken languages reflect) about the "inside surface".
"inner surface" is as good as it gets. Or "inside" or "interior". But those
two also refer to the contained volume, not the actual surface.
Steve
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Message has 1 Reply:
 | | Re: Line in the Sand
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| Steve Bliss wrote... (...) I think this is a possible, but rare case. It can, however, be circumvented by regarding DAT files from PARTS as special. (...) Why not? Any information you can gather by simply analysing a DAT file should not be required (...) (24 years ago, 20-Dec-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Line in the Sand
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| Steve Bliss wrote... (...) If IsTransparent(Color) Then AccumClip = FALSE takes care of solid non-16 colors (decorations) in parts used transparently. And a similar check added to BFC() can take care of transparent non-16 colors in parts used as (...) (24 years ago, 14-Dec-99, to lugnet.cad.dev)
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