Subject:
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Re: Voting Comments
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 20 May 1999 14:11:32 GMT
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Viewed:
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863 times
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On Wed, 19 May 1999 21:04:11 GMT, "Anders Isaksson"
<isaksson.etuna@REMOVEebox.tninet.se> wrote:
> Steve Bliss skrev i meddelandet <3741a8a1.20817582@lugnet.com>...
> >
> > I've thought about writing a function in LDAO to sort a DAT file by
> > line-type: first the 2 (edges) and 5 (conditionals), then the 1 (may be
> > edges, surfaces, or both) then the 3 (triangles) and 4 (quads).
> >
> > Steve
>
> Is that safe for transparent pieces?
>
> I toyed a little with re-sorting some parts to 'outside-in' instead of
> 'inside-out' to make the drawing faster (minimize overdraw), but then I
> realized that transparent pieces would not render correctly.
Order of drawing doesn't matter, except for coincident objects.
For transparent surfaces vs. edges, it matters even less: the edge must
'show through' the surface, or the renderer isn't working right.
LDraw and LDLite both display transparent surfaces by skipping every other
pixel, allowing the underlying features to show through.
Steve
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Message has 1 Reply:
 | | Re: Voting Comments
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| Steve Bliss skrev i meddelandet <37441788.505228@lugnet.com>... (...) Then the rendering *could* be speeded up by resorting everything 'outside-in'? (Smaller number of pixels to change) -- Anders Isaksson, Sweden BlockCAD: (2 URLs) (25 years ago, 20-May-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Voting Comments
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| Steve Bliss skrev i meddelandet <3741a8a1.20817582@l...et.com>... (...) Is that safe for transparent pieces? I toyed a little with re-sorting some parts to 'outside-in' instead of 'inside-out' to make the drawing faster (minimize overdraw), but then (...) (25 years ago, 19-May-99, to lugnet.cad.dev)
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