Re: [Bf-committers] Code donation: Dual contouring re-meshing
Wow...just...wow! ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Code donation: Dual contouring re-meshing
Quick update, New video: http://vimeo.com/21330126 Patch against trunk is now uploaded: http://www.pasteall.org/20117/diff -Nicholas On Mon, Mar 14, 2011 at 10:19 PM, Nicholas Bishop nicholasbis...@gmail.com wrote: Hi again, some quick status updates on this: I've started checking out the code, looks like integration as a modifier shouldn't be too hard. As a first step, since the code was written for 32-bit compilation with MSVC, I've been updating it to compile with g++ too, as well as some memory fixes for 64-bit. Current status, I've got it working as a standalone program. Quick test with the Standford bunny, imported resulting .ply model into Blender: http://www.pasteall.org/pic/show.php?id=9959 [on right is original with holes and uneven topology, then middle is rebuilt with a depth-7 octree, and on the left rebuilt with a depth-5 octree.] The output looks good to me, and pretty quick to calculate :) Right now I'm continuing to update the code externally from Blender, making it a bit more cross-platform and reformatting the precalculated text tables into human-readable (i.e. not datatoc'd) C files. Once this is done I'll pull it into Blender intern/, put together a C wrapper, and try it out as a modifier. -Nicholas On Sat, Mar 12, 2011 at 1:25 AM, Nicholas Bishop nicholasbis...@gmail.com wrote: Just FYI, I've started looking at this stuff. Nothing to report yet though :) Anyone else looking at it? -Nicholas On Mon, Mar 7, 2011 at 9:19 AM, Sergey Kurdakov sergey.fo...@gmail.com wrote: Hi All, though I'm not qualified to keep with the donated code, few thoughts,maybe they could be of some use it looks like the approach will be great to be combined with http://www.blendernation.com/2010/11/26/microsoft-kinect-in-blender-realtime-point-cloud-demonstration/ http://www.blendernation.com/2010/11/26/microsoft-kinect-in-blender-realtime-point-cloud-demonstration/kinect like devices get more penetration ( ms will issue sdk and also asus will have their device ) combination of point cloud ( which with more kinects will be very common for designers ) with blender could be a very good point. as for constructive solid geometry there is some code to be used http://www.opencsg.org (a link was mentioned on list few years back btw ) and finally maybe it can be used for fast and accurate booleans something like described here: http://www2.mae.cuhk.edu.hk/~cwang/pubs/TVCGMeshBoolean.pdf Regards Sergey ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Code donation: Dual contouring re-meshing
Hi again, some quick status updates on this: I've started checking out the code, looks like integration as a modifier shouldn't be too hard. As a first step, since the code was written for 32-bit compilation with MSVC, I've been updating it to compile with g++ too, as well as some memory fixes for 64-bit. Current status, I've got it working as a standalone program. Quick test with the Standford bunny, imported resulting .ply model into Blender: http://www.pasteall.org/pic/show.php?id=9959 [on right is original with holes and uneven topology, then middle is rebuilt with a depth-7 octree, and on the left rebuilt with a depth-5 octree.] The output looks good to me, and pretty quick to calculate :) Right now I'm continuing to update the code externally from Blender, making it a bit more cross-platform and reformatting the precalculated text tables into human-readable (i.e. not datatoc'd) C files. Once this is done I'll pull it into Blender intern/, put together a C wrapper, and try it out as a modifier. -Nicholas On Sat, Mar 12, 2011 at 1:25 AM, Nicholas Bishop nicholasbis...@gmail.com wrote: Just FYI, I've started looking at this stuff. Nothing to report yet though :) Anyone else looking at it? -Nicholas On Mon, Mar 7, 2011 at 9:19 AM, Sergey Kurdakov sergey.fo...@gmail.com wrote: Hi All, though I'm not qualified to keep with the donated code, few thoughts,maybe they could be of some use it looks like the approach will be great to be combined with http://www.blendernation.com/2010/11/26/microsoft-kinect-in-blender-realtime-point-cloud-demonstration/ http://www.blendernation.com/2010/11/26/microsoft-kinect-in-blender-realtime-point-cloud-demonstration/kinect like devices get more penetration ( ms will issue sdk and also asus will have their device ) combination of point cloud ( which with more kinects will be very common for designers ) with blender could be a very good point. as for constructive solid geometry there is some code to be used http://www.opencsg.org (a link was mentioned on list few years back btw ) and finally maybe it can be used for fast and accurate booleans something like described here: http://www2.mae.cuhk.edu.hk/~cwang/pubs/TVCGMeshBoolean.pdf Regards Sergey ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
[Bf-committers] Code donation: Dual contouring re-meshing
Hi all, I've been contacted by Prof. Tao Ju, University St Louis. http://www1.cse.wustl.edu/~taoju/ He offered Blender Foundation to use algorithms and code he developed the past years. It's based on his 2002 Siggraph paper: http://www1.cse.wustl.edu/~taoju/research/dualContour.pdf He further worked on that, resulting in this program: http://www1.cse.wustl.edu/~taoju/code/polymender.htm It also has an improved method for creating meshes out of volumes, preserving detail: example of a marching cube metaball scene: http://reocities.com/SiliconValley/port/3456/isosurf/png/demo1.png the same metaball scene in dual contouring: http://reocities.com/SiliconValley/port/3456/isosurf/png/demo2.png His assistant Jean-Denis Boudreault wrote me: If blender wishes to push the envelope even further, it could enter a whole new area of modeling paradigm, in which dual contouring would be the key. for example, the 3d modeling software http://www.3d-coat.com/ uses a voxel data approach for advanced neo-modeling of polygon free meshes. Blender could enhance it's metaball system with dual contouring to make it's entry in the voxel based modeling world in style. all this is only the start an overhaul of the metaball system can offer. With dual contouring, you now have the proper tools to do it. When I wrote back about possible implementation of CSG meshing, he wrote: As for CSG operations, I was not aware that they were not included in the above code. But im sure the talented Blender developers shall know how to re implement it if necessary. If this can help, i include code from an independent experimental implementation of dual contouring that is available as open source on the internet (http://reocities.com/SiliconValley/port/3456/isosurf/isosurfaces.html ). Now i am not aware if the code is usable by blender as is (and im convinced Mr. Ju's code is preferable anyways), but it can surely be used as an example implementation of CSG operations, from which the developers can triangulate the algorithms into Mr. Ju's code. The code for dualcontouring and polymender is here: http://download.blender.org/demo/test/dc.zip It is still (c) by the creator. He has agreed on transferring to this to (c) for BF, but with keeping his contribution credit. Anyone interested in following up on this is welcome! I'd need feedback from experienced developers what do with it precisely. In case there's someone who can (wants to) bring this in Blender, Tao Ju is more than willing to assist or give feedback too. Thanks, -Ton- Ton Roosendaal Blender Foundation t...@blender.orgwww.blender.org Blender Institute Entrepotdok 57A 1018AD Amsterdam The Netherlands ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
