Machine Learning • Deep Learning • Programming
In this post I will show how to compute normal vector at a vector in CGAL::Polyhedron_3. ComputeVertexNormal() Functor ComputeVertexNormal() is a thread-safe functor for computing the normal vector at a given vertex in a CGAL::Polyhedron_3. The normal vector at a vertex is the average of the normal vectors of all facets incident on the vertex. …
In this post I will show how to compute normal vector of a facet in CGAL::Polyhedron_3. ComputeFacetNormal() Functor ComputeFacetNormal() is a thread-safe functor for computing the normal vector of a given facet in a CGAL::Polyhedron_3. The facet must be a planar polygon with arbitrary number of sides. Using ComputeFacetNormal() Functor Normal vector of a facet …
In this post I will show how to compute edge length for a half-edge in CGAL::Polyhedron_3. ComputeEdgeLength() Functor ComputeEdgeLength() is a thread-safe functor for computing the edge length of a given half-edge in a CGAL::Polyhedron_3. Using ComputeEdgeLength() Functor Edge length of a half-edge h can be computed as double length = ComputeEdgeLength(h);. For most purposes, …
CGAL provides high quality generic half-edge data structure for representing polyhedral surfaces as well as many algorithms for mesh processing. However, CGAL doesn’t have any in-build support for building a polyhedron from Wavefront OBJ or PLY file. The following code is a basic OBJ file loader which reads vertex coordinates and faces (can be polygons) …