Documentation is hosted at geometry-central.net

Welcome to Geometry Central

Geometry-central is a modern C++ library of data structures and algorithms for geometry processing, with a particular focus on surface meshes.

Features include:

A polished surface mesh class, with efficient support for mesh modification, and a system of containers for associating data with mesh elements.
Implementations of canonical geometric quantities on surfaces, ranging from normals and curvatures to tangent vector bases to operators from discrete differential geometry.
A suite of powerful algorithms, including computing distances on surface, generating direction fields, and manipulating intrinsic Delaunay triangulations.
A coherent set of sparse linear algebra tools, based on Eigen and augmented to automatically utilize better solvers if available on your system.

Sample:

// Load a mesh
std::unique_ptr<SurfaceMesh> mesh;
std::unique_ptr<VertexPositionGeometry> geometry;
std::tie(mesh, geometry) = readSurfaceMesh("spot.obj"); 

// Compute vertex areas
VertexData<double> vertexAreas(*mesh);

geometry->requireFaceAreas();
for(Vertex v : mesh->vertices()) {
  double A = 0.;
  for(Face f : v.adjacentFaces()) {
    A += geometry->faceAreas[f] / v.degree();
  }
  vertexAreas[v] = A;
}

Check out the docs, tutorials, and build instructions at geometry-central.net. Use the sample project to get started with a build system and a gui.

Related alternatives: CGAL, libIGL, OpenMesh, Polygon Mesh Processing Library, CinoLib

Credits

Geometry-central is developed by Nicholas Sharp, with many contributions from Keenan Crane, Yousuf Soliman, Mark Gillespie, Rohan Sawhney, and many others.

If geometry-central contributes to an academic publication, cite it as:

@article{geometrycentral,
  title={GeometryCentral: A modern C++ library of data structures and algorithms for geometry processing},
  author={Nicholas Sharp and Keenan Crane and others},
  howpublished="\url{https://geometry-central.net/}",
  year={2019}
}

Development of this software was funded in part by NSF Award 1717320, an NSF graduate research fellowship, and gifts from Adobe Research and Autodesk, Inc.

Yihao-Shi/geometry-central

Documentation is hosted at geometry-central.net

Welcome to Geometry Central