[Soc-2014-dev] Weekly Report #9: NURBS Modernization

[claas kuhnen]

So agree I am very excited about this
On Jul 19, 2014 1:27 PM, "Sergey Sharybin" <sergey.vfx at gmail.com> wrote:

> Seems to be rather nice progress. Would be cool if all the bits are
> committed and some .blend in shared which demonstrates the stuff.
>
>
> On Sat, Jul 19, 2014 at 4:31 PM, Jonathan deWerd <jjoonathan at gmail.com>
> wrote:
>
>> Progress:
>> * Finished code to tessellate trim curves!
>>         see:
>> http://wiki.blender.org/index.php/User:Jjoonathan/NURBS_In_Blender
>> * Rewrote knot code to match the conventions in the math literature,
>> tested for compatibility by comparing meshes
>> * Worked on adapting a better NURBS evaluation algorithm that can produce
>> first and second derivatives (for normals and error bounds, respectively).
>>         it's still buggy.
>> * Worked further on the NurbEdge interface to handle imported trim curves
>>         still working on code to match endpoints that are separated in UV
>> space but coincide in R3 due to either wrapping in UV space (cyclic NURBS)
>> or coving
>>
>> Todo:
>> * Finish tracking down the NaN-producing bugs in the new surface evaluator
>>         From there, should be easy to implement good normals
>> * Finish NurbEdge so that it at least handles wrapping in UV space. This
>> will allow importing of most .3dm files.
>> * Implement revolution surfaces.
>>         Demo Claas's hairdryer model!
>>
>> On Jul 12, 2014, at 11:14 AM, Jonathan deWerd <jjoonathan at gmail.com>
>> wrote:
>>
>> > (Apologies if this is a duplicate email. I see a copy of this email in
>> gmail's "sent" folder but I don't see one in my inbox, so I'm sending
>> again.)
>> >
>> > Progress:
>> > * Finished the code that traverses BReps from 3dm files and cuts them
>> into surfaces
>> > * 2D Trim curves import as Nurb objects that are appended to a NurbList
>> in their parent surface
>> >       Just curves currently, I still have to get multi-part loops
>> working
>> >       Also they don't seem to be preserved by DNA even after calling
>> makesdna...
>> > * Moved surf_gridmesh into bf_blenkernel, promoted curve.c to curve.cpp
>> (for future OpenNurbs use), fixed a few small bugs that caused, moved the
>> GLUT debug code into blender/tests, convinced CMake to build and link it
>> > * Wrote, debugged the method that builds the displist from the gridmesh
>> > * Timed it, see pretty graph a few emails back
>> > * Started writing NurbEdge structure to handle in general the sewing of
>> trim edges and cyclic edges (e.g. so that spheres don't have seams)
>> >
>> > Next up:
>> > * I still need to finish the code that tessellates the trim curves. I
>> didn't get much time to work on it today, so I'm planning to work on it
>> tomorrow as well.
>> > * Get trim curves to load/save from .blend files by figuring out what
>> I'm doing wrong with makesdna
>> > * Finish NurbEdge interface for defining edges to sew, get it in DNA as
>> well
>> > * Use NurbEdge to implement revolution surfaces
>> >
>>
>> _______________________________________________
>> Soc-2014-dev mailing list
>> Soc-2014-dev at blender.org
>> http://lists.blender.org/mailman/listinfo/soc-2014-dev
>>
>
>
>
> --
> With best regards, Sergey Sharybin
>
> _______________________________________________
> Soc-2014-dev mailing list
> Soc-2014-dev at blender.org
> http://lists.blender.org/mailman/listinfo/soc-2014-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.blender.org/pipermail/soc-2014-dev/attachments/20140719/6ae9c8a4/attachment.htm