[PD] 3d boolean in gem

[Alexandre Quessy]

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 at 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
>
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