Man, typed faster than I read. There's no free lunch. Or polytopes. Regardless, YafRay is more promising than I originally thought. If only we could get John Stone to work with the YafRay people. His parallelism & round objects with their beautiful textures & meshes...
On Tue, 29 May 2007 [EMAIL PROTECTED] wrote: > > Ah HAH! "YafRay currently supports only Mesh Objects" > > http://www.blender.org/documentation/htmlI/x12554.html > > No wonder I couldn't find the documentation to render a sphere. What would > Ford say? "They can render any kind of object that they like, so long as > they like mesh objects..." > > That's OK with me. Spheres are for wimps anyway. I went through hell to get > tachyon to faithfully line the triangles up. As much effort Josh and I put > into that code, I wouldn't mind seeing it go. There are *much* better > algorithms than what we came up with; since they need only deal with meshes > directly and never the triangles. > > Also. I take back what I said about the documentation sucking. I'd assumed > that people were making pretty pictures of marbles with sphere objects, and > decided that the lack of sphere documentation sucked. Their feature count > leaves a bit to be desired -- but the feature that they do have seems do be > plenty well documented. > > Oooh! And we get 3d polytopes for free, too! This is gonna rock. I can't > wait 'till finals are over. > > On Tue, 29 May 2007, Michel wrote: > >> >> Here is a bit of documentation for Yafray. >> >> http://www.blender.org/documentation/htmlI/x12253.html >> >> I have never >> actually used it. My only experience with raytracing is Povray >> which is great but has the wrong license (although that is >> supposed to change in v4.0) >> >> >> Michel >> >> >> On May 29, 5:08 pm, "William Stein" <[EMAIL PROTECTED]> wrote: >>> On 5/29/07, Michel <[EMAIL PROTECTED]> wrote: >>> >>>> There is also Yafray. It is used as one of the rendering engines by >>>> blender and >>>> seems to be very good. Look here >>> >>> It looks great, and has a great license. I made a SAGE >>> package for it too. If you do >>> ./sage -i yafray-0.0.9 >>> it should build yafray for you (I made an experimental package). >>> >>> But it's a strange system to understand -- >>> there doesn't seem to be much in the way >>> of documentation, and doing something as simple as drawing a sphere >>> seems really hard. (??) It uses xml and is used as a raytracing plugin >>> for blender. It's actively developed. >>> >>> Anyway, I'm looking for a GPL-compatibly licensed replacement for >>> Tachyon3d, whose license is -- unfortunately -- not GPL compatible. >>> >>> -- >>> >>> Tom remarked: "It looks very pretty. Their documentation sucks. To >>> figure out their scene description language, it would appear that we'd >>> have to reverse-engineer it from Blender output." >>> >>> >>> >>> >>> >>>> http://www.blender.org/features-gallery/gallery/images/ >>> >>>> and scroll down a bit to "External renderers". >>> >>>> I *think* Yafray only has meshes so sage would have to create >>>> the geometric objects like spheres etc..., presumably not a big deal. >>>> For function plotting meshes are ideal. >>> >>>> Michel >>> >>>> On May 29, 12:33 am, "William Stein" <[EMAIL PROTECTED]> wrote: >>>>> On 5/28/07, Robert Bradshaw <[EMAIL PROTECTED]> wrote: >>> >>>>> > I'm just glad those are the only two sticky issues. I think we're >>>>> > fine with jsmath, as you said it's not linked--just distributed and >>>>> > run (separately) on the user's browser. We don't have to place >>>>> > license restrictions on the browser... >>> >>>>> Yep, that should be fine. >>> >>>>> > Hopefully the author of Tachyon gets back to us--I would be surprised >>>>> > if he didn't free it up. >>> >>>>> The problem is that he's never responded to any >>>>> email I've ever sent him. I suggest we wait a few days, >>>>> and if he doesn't response then: >>>>> (1) people on sage-devel who really like Tachyon could >>>>> write their own emails to him asking in their own words >>>>> that he consider removing the obnoxious licensing clause, >>>>> and , >>>>> (2) we try even hard to figure out if distributing Tachyon with >>>>> SAGE is actually a copyright violation. It's not completely >>>>> 100% crystal clear to me, since SAGE does no C library linking >>>>> with Tachyon. And fortunately the Tachyon license is the BSD >>>>> license (not something like the lame gnuplot license), so >>>>> it's not restrictive. That said, we very well might want to do some >>>>> C library linking with Tachyon in the future, and it would be very >>>>> bad to not have this option. >>> >>>>> -- >>>>> William Stein >>>>> Associate Professor of Mathematics >>>>> University of Washingtonhttp://www.williamstein.org >>> >>> -- >>> William Stein >>> Associate Professor of Mathematics >>> University of Washingtonhttp://www.williamstein.org >> >> >>> >> > > > > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
