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Is there any software which can input a POVray script definition of an object
and turn it into an .obj file? Thanks.
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"peyrol" <nomail@nomail> wrote:
> Is there any software which can input a POVray script definition of an object
> and turn it into an .obj file? Thanks.
If your POV-Ray script has a straightforward structure and contains only mesh or
mesh2 objects, then PoseRay may be able to read it.
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Am 09.12.2015 um 15:50 schrieb clipka:
> "peyrol" <nomail@nomail> wrote:
>> Is there any software which can input a POVray script definition of an object
>> and turn it into an .obj file? Thanks.
>
> If your POV-Ray script has a straightforward structure and contains only mesh or
> mesh2 objects, then PoseRay may be able to read it.
Also, Jerome Grimbert has developed a patched version of POV-Ray that
seems to be able to tesselate (i.e. generate meshes from) arbitrary
POV-Ray objects, and can export them at least in STL format, which
should be convertible to .obj using some external converter.
It is also possible to implement a tesselation algorithm as a piece of
POV-Ray script, but I'd only consider that as a last resort, as it would
probably require quite some parsing time.
Tesselation is a mandatory requirement when converting arbitrary POV-Ray
objects into .obj files, as POV-Ray uses raw mathematical
representations for most of its primitives (e.g. center point and radius
in case of a sphere) during the entire rendering process, whereas the
.obj file format can only store polygon meshes.
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Le 10/12/2015 01:32, clipka a écrit :
> Also, Jerome Grimbert has developed a patched version of POV-Ray that
> seems to be able to tesselate (i.e. generate meshes from) arbitrary
> POV-Ray objects, and can export them at least in STL format, which
> should be convertible to .obj using some external converter.
Mesh can also be saved (in that same patched version) in gts format.
(and it loads gts too, but not stl)
It is not arbitrary POV-Ray objects, only 3D finite objects:
* most methods need an interior
* you cannot make a mesh of povray plane or hyperboloid.
* but you can make mesh of intersection of planes, if the intersection
is 3D finite and has a non-infinite bounding box.
* 2D finite objects are not expected (triangle, disc...)
There are 6 tesselation methods... none are perfect (in fact, 2
categories, with 2 & 4 variants). And sometime, it seems there is a bit
of problem like long triangles jumping in the shape.
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On 12/8/2015 11:34 PM, peyrol wrote:
> Is there any software which can input a POVray script definition of an object
> and turn it into an .obj file? Thanks.
>
>
There was a similar question asked earlier this year. It might be worth
a read as Thomas de Groot and William F Pokorny mention macros that
might be useful.
http://news.povray.org/povray.newusers/thread/%3Cweb.556920739fbf4fba62e642c0@news.povray.org%3E/
--
Regards
Stephen
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Thanks to all for your quick and detailed responses!
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I do some work with 3D printers, and so naturally I've come across and used
OpenSCAD. The way to "build" things is remarkably similar to POV-Ray's SDL.
I'm wondering if it might be "easy" {someone else could do the work ;) } to
translate SDL to the OpenSCAD format, and export as an STL file. AFAIK, it
should be trivial to convert STL to OBJ.
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Is there any way to contact Jerome Grimbert or to download that patched
version of POV-Ray? Thanks.
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Am 25.01.2016 um 18:23 schrieb Sven Littkowski:
> Is there any way to contact Jerome Grimbert or to download that patched
> version of POV-Ray? Thanks.
Le_Forgeron might be able to help you there ;)
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Hash: SHA256
Le 25/01/2016 20:03, clipka a écrit :
> Am 25.01.2016 um 18:23 schrieb Sven Littkowski:
>> Is there any way to contact Jerome Grimbert or to download that
>> patched version of POV-Ray? Thanks.
>
> Le_Forgeron might be able to help you there ;)
>
The code is available on github and bitbucket
(if you like git or mercurial )
and all starts in
http://wiki.povray.org/content/User:Le_Forgeron
The repository is povray, the branch with tesselation and all other
extension/change is Hgpovray (or Hg-povray)
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