Re: [K3d-development] Collada

[Carlos D. <car...@gm...>]

Yes I like the idea. Actually I think with this transformation thing done a
reader would be pretty much done as all other stuff belong to the importer
category. Well I'm not sure a reader also takes into account textures?

The documentation I'm following is this:
http://www.khronos.org/collada/
the collada specification 1.4.1 but for programming with the collada dom
it's kinda difficult cuz I haven't found any decent documentation either but
I'm trying to work looking through the collada dom code and some rough
examples.

Bests,
Carlos

On Sun, Jun 29, 2008 at 8:55 PM, Joaquín Duo <hoa...@ya...> wrote:

> Timothy M. Shead wrote:
> > Carlos Dominguez wrote:
> >> I also have a question about transformations. A while ago I asked here
> >> about coordinate system transformations and you told me a method I
> >> implemented on the SVG reader with a stack. Here in collada I just
> >> commited a change which handles transformations but the thing is that
> >> right now it writes the transformations into the vertex list and if
> >> for example I have a sphere with the coordinates as they are and then
> >> I want to instantiate (call the sphere geometry) but with a
> >> translation and then instantiate again with a rotation, is there a way
> >> that I can reuse the points? or I will need to create a whole new
> >> vertex list etc for each one of the instances? I know it's posible in
> >> k3d calling a Transformation but can I call it from the reader module
> >> code too?
> > As Joaquin correctly suggests, the real question here is whether you
> > should be creating a Reader or an Importer.  A Reader is a node that is
> > part of the pipeline and produces a mesh as output, so everything that
> > the reader loads must ultimately become part of the mesh.  An Importer
> > *generates* the nodes that become the pipeline.  I don't know much at
> > all about Collada but it is possible that a Reader just isn't
> > appropriate for the data, and that you might want to focus on creating
> > an Importer - aside from making the right technical distinction, this
> > would probably be a good change-of-pace for you.
>
> I was going to suggest to make a first iteration for the Reader to be more
> or
> less ready. Then create the Importer and revisiting the Reader later.
> What do you think?
>
> >
> > Could you point me to some of the documentation that you're looking-at?
> > I've yet to find any decent documentation on Collada ...
> I think Carlos is reading the Collada's Specification from his link in the
> article
> http://www.khronos.org/files/collada_spec_1_4.pdf
> http://www.khronos.org/collada/
>
> Cheers!
> Joaquín
>
>
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-- 
Carlos Andres Dominguez Caballero
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