[Papervision3D] Fire Sphere Source

[John Grden]

I experienced the same thing in AS2

On 7/7/07, ricardo cabello ! mr.doob <info at mrdoob.com> wrote:
>
> The problem that the primitive Sphere has is that the mapping doesn't
> work properly (I think) when there aren't too many subdivisions. I had
> to do a world map for a project with AS2 and the best solution was
> exporting from MAX a geosphere as .ASE.
>
> --
> Ricardo Cabello ~ Mr.doob
> Designer + Developer
>
> Web: http://mrdoob.com
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> MSN/AIM: info at mrdoob.com
>
>
> On 7/7/07, Alex Petrescu <alex.petrescu at gmail.com> wrote:
> > I did some tests with a sphere with 30x30 subdivisions, and I found no
> > difference in performance or basic texturing (the primitive sphere had
> the
> > same distortion at the poles as the sphere exported from Maya using
> Sawtooth
> > UV's near the poles.).
> >
> > The issue I had previously was that the performance of using a primitive
> in
> > AS2 was pretty poor (probably dealing with the polygon count).  So I had
> to
> > make a sphere in Maya and cut off the top/bottom 10% faces.  This
> reduced my
> > polygon count dramatically since there are a lot of poly's near the
> poles.
> >
> > Sorry for the confusion.
> >
> > Regards,
> > Alex
> >
> >
> > On 7/6/07, Alex Petrescu <alex.petrescu at gmail.com > wrote:
> > > Yeah, I'll put up some tests this weekend so we can truly see if it is
> > faster or if it just looks better (I know it looks better, but I thought
> it
> > was faster too).
> > >
> > > -- Alex
> > >
> > >
> > >
> > > On 7/6/07, John Grden <neoriley at gmail.com> wrote:
> > > >
> > > > Hey Alex, weren't you the one that mentioned in class (same alex?)
> that
> > the sphere out of Maya was rendered faster in PV3D than the primitive
> > version?
> > > >
> > > >
> > > >
> > > > On 7/6/07, Alex Petrescu <alex.petrescu at gmail.com> wrote:
> > > > >
> > > > > I actually find the the sphere primitive that's built into PV3D
> isn't
> > very good for use in texturing  because of the pinching at the poles.  A
> > sphere that comes out Maya or other 3D programs take that into account
> and
> > create "sawtooth UV's" near the poles.  So when you texture the sphere,
> it
> > doesn't have any pinching near the poles.
> > > > >
> > > > > Regards,
> > > > > Alex Petrescu
> > > > >
> > > > >
> > > > >
> > > > > On 7/6/07, Paul Spitzer < paul at fluid.com> wrote:
> > > > > > There's no specific reason behind using an external model.
> That's
> > just
> > > > > > the way I originally did it, which i think was before the sphere
> > > > > > primitive existed
> > > > > >
> > > > > > xero wrote:
> > > > > > > nice. thanx for optimizing + sharing!
> > > > > > > so looking through yer code i see you
> > > > > > > are using a sphere.dae, can i ask why?
> > > > > > > pv3d as a sphere primative built in.
> > > > > > > is there any advantage to this technique?
> > > > > > > wouldnt it actually increase load times
> > > > > > > since it has to read in the external collada
> > > > > > > vs just getting the vertices from the materials
> > > > > > > class??? im not criticizing, im just curious.
> > > > > > > thanx!
> > > > > > >
> > > > > > > ps, doob, thanx yew for the source as well!
> > > > > > > ____  ___
> > > > > > > \   \/  /___________  ____
> > > > > > > .\     // __ \_  __ \/  _ \
> > > > > > > ./     \  ___/|  | \(  <_> )
> > > > > > > /___/\  \___  >__|---\____/
> > > > > > > |     \_/   \/        |
> > > > > > > | xero harrison       |
> > > > > > > | x at xero.nu           |
> > > > > > > | http://xero.nu      |
> > > > > > > | http://fontvir.us   |
> > > > > > > | http://xero.owns.us |
> > > > > > > `---------------------'
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >> ---------- Forwarded message ----------
> > > > > > >> From: Paul Spitzer < paul at fluid.com >
> > > > > > >> To: Papervision3D at osflash.org
> > > > > > >> Date: Fri, 06 Jul 2007 13:51:39 -0600
> > > > > > >> Subject: [Papervision3D] Fire Sphere Source
> > > > > > >>
> > > > > > >>
> >
> http://www.actionscriptarchitect.com/2007/07/06/updated-fire-sphere-with-source/
> > > > > > >>
> > > > > > >>
> > > > > >
> > > > > >
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> > > > >
> > > > >
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> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > [  JPG  ]
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-- 
[  JPG  ]
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