13 Jul
2006
13 Jul
'06
5:40 p.m.
Hi,
A good idea would be to make a library of Gem abstractions using openGL functions, dynamic objects creation and the [repeat] and [any] objects.
Then, we could use lists of 3D vectors, do arithmetics on them, and render it at the end of the chain.
Such a library could be named extensions/dyngems. Any people in the room wants to work on this ?
--
Alexandre Quessy
http://alexandre.quessy.net
On 7/13/06, james tittle tigital@mac.com wrote:
>
> hi,
>
> On Jul 13, 2006, at 5:33 AM, yukio wrote:
>
> > hi , in some tradicional 3d software like 3d studio max and cinema4d
> > theres a fuction called boolean that enable for example substract
> > areas
> > from a 3d object using another ..... for example if you have 2
> > spheres ,
> > you can use one to substract an area of the second one, you can
> > also add
> > 2 3d object or visualize just the intersection of both objects.....
> > my question is .. is it possible to make something like this in Gem
> > with
> > geos?
> > for example substracting an area of a geo with a second one?
>
> ...what your looking for is called "constructive solid geometry" (1),
> and it's not natively supported in GEM: in general, GEM's strengths
> are not as a traditional "modeler"...GEM allows fairly low-level
> access to 3D OpenGL operations which could be used to create your own
> CSG patches, but you'd have to do the math for the primitives and
> intersecting in pd, and then use GEM to upload the vertices and view...
>
> james
>
> _______________________________________________
> PD-list@iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>