Yamyam: 1版をインポートしました

2018-06-28T20:49:33Z

1版をインポートしました

2013年11月23日 (土) 21:32にwiki>Apinzonfによる

2013-11-23T21:32:46Z

新規ページ

= GSOC 2012 Progress Reports =

== Week 1 Report ==

=== What I did this week? ===

I read Blender documentation and other related documents that describe sparse matrix and laplacian implementations advised to my by Daniel and Brecht.

I proposed several lines of code for operators names, and describe how implement laplacian system with OpenNL.

I wrote this design document, this document describes the methodology of my project "Mesh smoothing"
http://wiki.blender.org/index.php/User:Apinzonf/design

I finished the paper today, and send it to my tutor Daniel, I hope that in the next few days the corrected document, and after making the corrections I'll post the changes proposed in the design document to svn branch.

=== What you plan to do next week? ===

The next week i will write code for operators name, and implement methods to initialize data structures, and initial configuration for laplacian system.

=== Any roadblocks, difficulties, etc. ===

-

== Week 2 Report ==

=== What I did this week? ===

I implemented new operator with base on "Smooth" operator source code.

I implemented methods to calculate the Laplacian Matrix.

The OpenNL was use for solve sparse system.

I implement method which constructs the system of equations.

I implement method to solve the sparse linear system.

I added area to normalized laplacian weight.

I added area constraint parameter in user interface.

=== What you plan to do next week? ===

To study the constraint on the boundaries.

To implement constraint on the boundaries.

=== Any roadblocks, difficulties, etc. ===

== Week 3 Report ==

=== What I did this week? ===

I performed a proper management when selecting some vertices, we must detect the border with the flag BM_ELEM_SELECT in the faces around vert.

I Added lambda factor for boundaries in UI.

I implemented method to exact volume preservation.

I implemented special treatment for vertices on boundaries.

I wrote a small page so people can download and try the partial results of my project.
http://wiki.blender.org/index.php/User:Apinzonf/laplaciansmooth/tutorial

=== What you plan to do next week? ===

To implement this tool how a modifier.

=== Any roadblocks, difficulties, etc. ===

== Week 4 Report ==

=== What I did this week? ===

I implemented a Laplacian smooth how a modifier tool.
* I read [[Dev:Source/Modifiers/Adding]]
* I looked several MOD_...c files. In <tt>/source/blender/modifiers/intern</tt>
* I did copy and paste from <tt>MOD_smooth.c</tt> and related files to <tt>MOD_laplaciansmooth.c</tt>
* I Implemented Laplacian smooth algorithm in file <tt>MOD_laplaciansmooth.c</tt>, with base on my work in other file make in past weeks <tt>bmo_smooth_laplacian.c</tt> in <tt>/source/blender/bmesh/operators</tt>
* I take a long time transforming the algorithm, since in the modifiers there is little topological information. And transform the DerivedMesh to BMesh would cause poor performance (Advice given by Genscher and ideasman_42).

=== What you plan to do next week? ===

Adapt the modifier to work with Quads.

=== Any roadblocks, difficulties, etc. ===

The modifier only works with triangulated meshes, MFace has 4 verts in some cases, and I need work with 3 verts only or adapt the algorithm to work with Quads.

== Week 5 Report ==

=== What I did this week? ===

I solved the problem with quads that had [http://multires.caltech.edu/pubs/ImplicitFairing.pdf Desbrun, et al], using the paper [http://www.springerlink.com/content/y524204530h2344w/ Xiong et al].

I studied the paper and adapt [http://www.springerlink.com/content/y524204530h2344w/ Mean Laplace–Beltrami Operator for Quadrilateral Meshes Xiong et. Al. 2011] to work with quads and triangles at same time.

I implemented the laplacian smoothing for triangles and quads how a modifier

<tt>MOD_laplaciansmooth.c</tt> and operator <tt>bmo_smooth_laplacian.c</tt>.

The algorithm in operator <tt>bmo_smooth_laplacian.c</tt> was changed for best performance.

I added some constraints.

Soft constraints: each vertex can be weighted according to the desired smoothing that we want.

Hard constraints: vertices can be constrained along an axis

I did optimization code and apply coding style with base on [[Dev:Doc/CodeStyle]]

=== What you plan to do next week? ===

Publish versions for windows and linux and I start working on refine current graphical user integration with the community.

=== Any roadblocks, difficulties, etc. ===

The results are very good, and I think in future I will write a paper

== Week 6 Report ==

=== What I did this week? ===

I did compile Blender Sushi Branch for Windows 32 bit and Linux 64 bit versions.

I made a video showing the uses of the tool to remove noise, or to model objects with the technique called "Smooth Subdivision Surface"

<youtube>7U9_jE-ElTw</youtube>

I wrote a page on the wiki showing how the project

[[User:Apinzonf/laplaciansmooth/tutorial]]

I wrote a page in [http://blenderartists.org blenderartists] to show the video, and ask for cooperation in the definition of the names and descriptions of the buttons on the tool.

[http://blenderartists.org/forum/showthread.php?259378-Gsoc-2012-Sushi-Branch-Laplacian-Smooth-Video Gsoc-2012-Sushi-Branch-Laplacian-Smooth-Video]

=== What you plan to do next week? ===

Working on refine current graphical user integration with the community.

=== Any roadblocks, difficulties, etc. ===

I will write a paper "Smooth Subdivision Surface".

== Week 7 Report ==

=== What I did this week? ===

Daniel my mentor helped me to get collaboration for testing and the compilation.

I wrote test uv page [[User:Apinzonf/laplacian/test_uv]]

I add volume preservation to UI.

I started manual doc Laplacian Smoooth [[User:Apinzonf/Doc:2.6/Manual/Modifiers/Deform/Laplacian_Smooth]]

=== What you plan to do next week? ===

I will do try to modifier in the community

=== Any roadblocks, difficulties, etc. ===
.

== Week 8 Report ==

=== What I did this week? ===

I added internal constraint for reduce spikes, based in length of edge.

I have a Manual Page about Laplacian Smooth Modifier, ready for review.

[[User:Apinzonf/Doc:2.6/Manual/Modifiers/Deform/Laplacian_Smooth]]

Wiki User LuisEDB(Luis Duran) is helping me, with spell check, english grammar.

The community began to give ideas and opinions about the Laplacian Smooth Modifier [http://blenderartists.org/forum/showthread.php?259378-Gsoc-2012-Sushi-Branch-Laplacian-Smooth-Video Blenderartists thread].

I did merge from trunk to branch sushi.

=== What you plan to do next week? ===

I will continue talking with the community about the tool.

I will do some performance testing.

=== Any roadblocks, difficulties, etc. ===
.

== Week 9 Report ==

=== What I did this week? ===

I changed intern parameter for reduce spikes, with base on several tests.

I did merge from trunk to branch sushi, i found problems again of my colleagues in the branch, and i had to resolve to work well.

Changed the names of the parameters, based on suggestions from the community.

I studied some solvers and methods about Preconditioned Bi-Conjugate Gradient Method PBCG, and made some performance test with CHOLMOD , TAUCS, BICGSTAB, SUPERLU, and SUPERLU have the better performance.

I used math, and numeric_stuff modules from Graphite software for made the test.

=== What you plan to do next week? ===

I will do more documentation.

I will do studies on the problem that occurs when the smoothing is large and the preservation of volume is applied.

=== Any roadblocks, difficulties, etc. ===
.

== Week 10 Report ==

=== What I did this week? ===

I solved the problem of displacement due to the scaling applied when the volume is preserved.

I wrote document about performance of several numerical solvers, for compare time in computation of laplacian smooth system.

[[User:Apinzonf/laplacian/test_solvers | Performance Testing of Solvers]]

[[File:Apinzonf_GSOC_2012_Diagram_VerticesVsSeconds.png|center|thumb|400px|Vertices Vs Seconds ]]

=== What you plan to do next week? ===

I will do more documentation and tests.

=== Any roadblocks, difficulties, etc. ===
.

== Week 11 Report ==

=== What I did this week? ===

I did merge from trunk to branch sushi.

I wrote a tutorial for developers <b>Tutorial Adding a New Modifier</b>

[[User:Apinzonf/Dev:Doc/Tutorial_Modifier]]

=== What you plan to do next week? ===

Prepare Sushi-SmoothLaplacian branch to integrate it into the blender trunk

=== Any roadblocks, difficulties, etc. ===
.

== Week 12 Report ==

=== What I did this week? ===

I wrote a wiki page to list the work I did and that is ready for review

Source code and Documents to review: [[User:Apinzonf/develop]]

I wrote a wiki page to download last versions of sushi branch and some files for testing.

Download and Testing: [[User:Apinzonf/Download]]

I wrote a BA thread, to call for reviewers

[http://blenderartists.org/forum/showthread.php?259378-Gsoc-2012-Sushi-Branch-Laplacian-Smooth-Video&p=2180579#post2180579 BA thread]

=== What you plan to do next week? ===

I will correct the problems encountered by reviewers.

=== Any roadblocks, difficulties, etc. ===
.

← 古い版	2018年6月28日 (木) 20:49時点における版
(相違点なし)

利用者:Apinzonf/progress - 版の履歴

Yamyam: 1版 をインポートしました

2013年11月23日 (土) 21:32にwiki>Apinzonfによる

Yamyam: 1版をインポートしました