Subject:
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Re: POV-Ray help needed
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 9 Apr 2009 22:54:16 GMT
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Viewed:
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11865 times
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In lugnet.cad.dev, Roland Melkert wrote:
> Also you may be interested in knowing that I now also have a basic
> "hierarchical compositions" export in place (no lgeo, no primitive
> substitutions (yet)). And it seems the mesh2 approach, i used before, is
> about 15-20% faster on bigger models. So I keep that option in the final
> version for faster test runs.
Thanks for the info. I have implemented mesh2 support in LDView's export as
part of my new curve smoothing support for POV exports, but haven't completely
removed the mesh support (although it is currently hard-coded to use mesh2
whether or not curve smoothing is enabled). If mesh2 is generally faster, I'll
probably just leave it as the only option.
Somewhat ironically, curve smoothing gets rid of most of the part hierarchy,
since it would be a whole lot more difficult to determine where to smooth
otherwise, so LDView now has (mostly) flat parts when curve smoothing is
enabled, and you now have hierarchical ones. LDView still generates fully
hierarchical parts when curve smoothing is disabled, and even when it's enabled,
parts that contain primitives have the primitives done hierarchically (assuming
primitive substitution is enabled for the export).
Note: all of this is in my 4.1 development code; none of it has been released
yet.
--Travis
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Message has 1 Reply:
 | | Re: POV-Ray help needed
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| (...) I forgot the beginning of this thread, and misunderstood your "15% faster" comment. I see now that you're referring to the flattened mesh2 data for the part. I was mis-reading it to be that mesh2 is 15% faster than mesh (which I know you never (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: POV-Ray help needed
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| (...) Hi Travis, I've finally picked up the povray export project again, You were right I needed to calculate the horizontal fov from the vertical one used in OpenGL. Also you may be interested in knowing that I now also have a basic "hierarchical (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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