[fluxus] Object Loader

[Dave Griffiths]

>>> You wrote:
>>>> It might also be a
>>>> fix for the absurd load times to save out the list created by obj-
>>>> load,
>>> What did you mean by "save out"?
>> something like ...
> I have tested your suggestion. It brings down the loading time of my
> bigger model
> from 70 seconds to 35 seconds. Not so bad! But, compared to the 0.5
> seconds
> that glm.c needs .... :-)
> Maybe incorporating glm.c into fluxus could be the easiest solution?

maybe - I'd be interested to try the obj loader in pltscheme, where it can
be easily profiled and see whats going on with it first. I don't think
there is an interpreted language reason for it to be that much slower -
it's far more likely to be a programmer error on my behalf ;)

>>> PS
>>> As you have guessed correctly, I was about to ask you about using the
>>> OPCODE part of ODE in fluxus ;-) ...
>> I was just going to implement the ode trimesh - probably allowing
>> you to
>> specify a different physics mesh from the renderable one, something
>> like:
>> (active-trimesh primitive collision-mesh-primitive)
> This sounds good!
>
>> I haven't looked much into it yet, but am I right in thinking
>> opcode is
>> the collision detection part of ode?
> Opcode does collision of trimeshes in ODE (it can be enabled in ODE's
> config/user-settings).
> It's a pretty efficient and free collision detection library.
> Only downside is the lousy documentation.
>
>> Would you want a lower level binding
>> to that in fluxus?
>> I can imagine it would be handy to use it to do fast
>> intersections of things etc.
>
> I think that
> (active-trimesh primitive collision-mesh-primitive)
> sounds almost sufficient to me.
> If I remember correctly, opcode can return the list of triangles that
> are intersecting.
> So another function for getting that list might be good.

the physics interface has been a bit neglected by me recently as I don't
use it much. if anyone is interested in having a go at improving the
situation I'd be happy to support with cvs access and help. the code is
quite self contained (only Physics.cpp really)

cheers,

dave