sample codes of vcglib and MeshLab function.
The Visualization and Computer Graphics Library (VCG for short) is a open source portable C++ templated library for manipulation, processing and displaying with OpenGL of triangle and tetrahedral meshes.
- cmake
- Eigen
- C++ compiler(visual studio, gcc, ... etc.)
- Qt (not necessary but it's easy to visualize)
Clone vcglib from github. You should select develbranch (master branch is too old).
$ git clone -b devel https://github.com/cnr-isti-vclab/vcglib.git
Cloning into 'vcglib'...
remote: Enumerating objects: 5, done.
remote: Counting objects: 100% (5/5), done.
remote: Compressing objects: 100% (5/5), done.
remote: Total 42007 (delta 0), reused 1 (delta 0), pack-reused 42002
Receiving objects: 100% (42007/42007), 17.24 MiB | 1.23 MiB/s, done.
Resolving deltas: 100% (28087/28087), done.
Checking out files: 100% (1063/1063), done.
$ cd vcglib
$ git branch
* develFirst, you have to set below environment values
VCGLIB_DIR: path/to/vcglib (e.g.C:/Users/Public/Documents/GitHub/vcglib)MESHLAB_DIR: path/to/MeshLab/source (e.g.C:/Users/Public/Documents/GitHub/meshlab/src)EIGEN3_INCLUDE_DIR: path/to/Eigen3 (e.g.C:/eigen-3.3.7)
see this sample for details.
- template data structure : CODE
- template data structure from MeshLab : CODE
- access mesh vertices/faces : CODE
- set flag of vertices/faces : CODE
- expand select function : CODE
- get adjacent vertices/faces : CODE
- create mesh using just a vector of coords and a vector of indexes : CODE
- user defined attribute : CODE
- add and delete vertices/faces : CODE
- set color each vertex/face and save as ply: CODE
- set vertex value and save as ply format : CODE
- copy and merge mesh data : CODE
- convert degree and radian: CODE
- distance between two points : CODE
- distance between point and line : CODE
- distance between point and plane : CODE
- angle between two vectors : CODE
- quaternion : CODE
- transformation matrix : CODE
- translate matrix with Eigen : CODE
- remove non manifold vertices and faces : CODE 未完成
use MeshLab data structure.
- template data structure from MeshLab : CODE
- calculate curvature : CODE
- hole filing : [CODE]
- mesh simplification : CODE 未完成
- calculate Hausdorff distance : CODE 内容整理 sample target
- mesh intersection : [CODE]
- select boundary line : [CODE]
- simplification : CODE
- subdivision : CODE
Missing Component Exception -FFAdjacency-のようなケース
// adjacency関連を有効にする(頂点と面でそれぞれ有効化しないといけないものもある)
mesh.vert.EnableVFAdjacency();
mesh.face.EnableFFAdjacency();
mesh.vert.EnableCurvature();
mesh.vert.EnableCurvatureDir();Assertion failed: f.cFFp(j) != 0, file C:/Users/Public/Documents/GitHub/vcglib/vcg/simplex/face/topology.h, line 39 のようなケース
// 初期化時と関係性が変わった場合は更新が必要
tri::UpdateTopology<CMeshO>::FaceFace(mesh);
tri::UpdateTopology<CMeshO>::VertexFace(mesh);
tri::UpdateNormal<CMeshO>::PerFace(mesh);
tri::UpdateNormal<CMeshO>::NormalizePerFace(mesh);MeshLab implements many functions in a plugin format. A list of plugins can be found here.
Let's take a look at the structure of the mlsplugin.cpp file as an example. The name of the implemented function is defined here. The function for plugins is the applyFilter function.
The process branches according to the ID contained in the filter variable.
The applyFiter function is the starting point of each plug-in process, so if you follow the process from here, you can check all the implementation details.
When searching for the function you want to know how to be implemented on MeshLab, it is recommended way that search function name by using grep command in source directory.
トラックボール表示するだけのサンプル
視点操作はトラックボール使うと楽にできるが、固定シェーダ前提になる
トラックボールとメッシュデータ表示するサンプル
光源用の処理も追加
// mesh1においてmesh2との干渉面が選択される(mesh2はそのまま)
mesh2.face.EnableMark();
int a = vcg::tri::Clean<CMeshO>::SelectIntersectingFaces(mesh1, mesh2);