Ah, sorry, I should have said. Its the fan of the ideal generated by:
{v^2-w-1, w^2-x-1, x^2-y-1, y^2-z-1, z^2-v-1}. Not very complicated,
but of course with 5 variables you can't compute most fans.
I'm going to give a talk in early November on visualizing geometric
objects with associated alg
On Wed, Sep 17, 2008 at 6:23 PM, David Joyner <[EMAIL PROTECTED]> wrote:
>
> On Wed, Sep 17, 2008 at 8:57 PM, mhampton <[EMAIL PROTECTED]> wrote:
>>
>> I thought I'd mention that using ffmpeg and Sage/singular/gfan/tachyon
>> I was able to finish the little pilot project I had in mind: taking a
>>
On Wed, Sep 17, 2008 at 8:57 PM, mhampton <[EMAIL PROTECTED]> wrote:
>
> I thought I'd mention that using ffmpeg and Sage/singular/gfan/tachyon
> I was able to finish the little pilot project I had in mind: taking a
> 5d Groebner fan, intersecting it with a hyperplane, rotating it in 4d,
> and ani
I thought I'd mention that using ffmpeg and Sage/singular/gfan/tachyon
I was able to finish the little pilot project I had in mind: taking a
5d Groebner fan, intersecting it with a hyperplane, rotating it in 4d,
and animating the projection into three dimensions. I am still
struggling with the op
Hi,
> Thanks very much for this response. ffmpeg looks very useful to me, I
> am checking it out right now. It is unclear to me what the overlap is
> with mplayer/mencoder. It seems that ffmpeg is somewhat leaner and
> more portable, so I am thinking of using it as the encoder for your
> first
Thanks very much for this response. ffmpeg looks very useful to me, I
am checking it out right now. It is unclear to me what the overlap is
with mplayer/mencoder. It seems that ffmpeg is somewhat leaner and
more portable, so I am thinking of using it as the encoder for your
first suggestion (cr
On Sep 2, 10:40 pm, mhampton <[EMAIL PROTECTED]> wrote:
> Thanks very much for this response. ffmpeg looks very useful to me, I
> am checking it out right now. It is unclear to me what the overlap is
> with mplayer/mencoder. It seems that ffmpeg is somewhat leaner and
> more portable, so I am t
> Thanks Vincent for the information. One reason I am choosing not to
> use povray is the license, which I believe is not compatible with
> inclusion in Sage.
Ah. I didn't know about the license, I had a look and indeed it is not
quite free enough. BTW I am not pushing povray as such, simply sa
On Mon, Sep 1, 2008 at 9:55 AM, Vincent Beffara <[EMAIL PROTECTED]> wrote:
>
>> >So, to return to Sage : it should be quite doable to have one plot3d
>> >format be povray source-code, to be compiled separately (or which gets
>> >compiled in the background). That's not at all real-time, so I'm not
Thanks Vincent for the information. One reason I am choosing not to
use povray is the license, which I believe is not compatible with
inclusion in Sage.
Btw, the tachyon raytracer does seem to have good multicore support dy
default. Unfortunately it cannot animate. I wish we had someone who
c
On Sep 1, 11:05 am, root <[EMAIL PROTECTED]> wrote:
> It would seem that ray tracing should be a fully parallel task.
Yes, it is, but multicore isn't the issue I think. Images can be split
up into smaller rectangles (i.e. rendering a single image by 4 cores
in parallel by splitting it into a 2x
> >So, to return to Sage : it should be quite doable to have one plot3d
> >format be povray source-code, to be compiled separately (or which gets
> >compiled in the background). That's not at all real-time, so I'm not
> >sure it fits the original purpose, but it certainly can produce a movie
> >(i
>> >I've been playing around with learning blender, with the idea of
>> >animating some 4-D projection/rotations of polytopes into 3D. But all
>> >I really want is a nice compressed animation/movie format, and it
>> >seems like there should be a lighter-weight way to do that. If I come
>> >up wi
> >I've been playing around with learning blender, with the idea of
> >animating some 4-D projection/rotations of polytopes into 3D. But all
> >I really want is a nice compressed animation/movie format, and it
> >seems like there should be a lighter-weight way to do that. If I come
> >up with a
>I've been playing around with learning blender, with the idea of
>animating some 4-D projection/rotations of polytopes into 3D. But all
>I really want is a nice compressed animation/movie format, and it
>seems like there should be a lighter-weight way to do that. If I come
>up with anything wor
I've been playing around with learning blender, with the idea of
animating some 4-D projection/rotations of polytopes into 3D. But all
I really want is a nice compressed animation/movie format, and it
seems like there should be a lighter-weight way to do that. If I come
up with anything worth sh
On Aug 29, 4:52 pm, Carl Witty <[EMAIL PROTECTED]> wrote:
> On Aug 29, 4:36 pm, "Philippe Saade" <[EMAIL PROTECTED]> wrote:
>
> > Hi,
Hi,
> > after many discussion with Sage potential users (this week, around
> > me), i get convinced that it would be great to use Blender Python APi
> > to rend
On Aug 29, 4:36 pm, "Philippe Saade" <[EMAIL PROTECTED]> wrote:
> Hi,
>
> after many discussion with Sage potential users (this week, around
> me), i get convinced that it would be great to use Blender Python APi
> to rendre 3D scenes and animations.
>
> I have done some 3D animations few years ag
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