Open3D (C++ API)  0.12.0
TetraMesh.h
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26 
27 #pragma once
28 
29 #include <Eigen/Core>
30 #include <Eigen/StdVector>
31 #include <memory>
32 #include <vector>
33 
35 #include "open3d/utility/Eigen.h"
36 #include "open3d/utility/Helper.h"
37 
38 namespace open3d {
39 namespace geometry {
40 
41 class PointCloud;
42 class TriangleMesh;
43 
48 class TetraMesh : public MeshBase {
49 public:
57  TetraMesh(const std::vector<Eigen::Vector3d> &vertices,
58  const std::vector<Eigen::Vector4i, utility::Vector4i_allocator>
59  &tetras)
60  : MeshBase(Geometry::GeometryType::TetraMesh, vertices),
61  tetras_(tetras) {}
62  ~TetraMesh() override {}
63 
64 public:
65  TetraMesh &Clear() override;
66 
67 public:
68  TetraMesh &operator+=(const TetraMesh &mesh);
69  TetraMesh operator+(const TetraMesh &mesh) const;
70 
74 
79 
83 
88 
90  bool HasTetras() const {
91  return vertices_.size() > 0 && tetras_.size() > 0;
92  }
93 
100  std::shared_ptr<TriangleMesh> ExtractTriangleMesh(
101  const std::vector<double> &values, double level);
102 
108  static std::tuple<std::shared_ptr<TetraMesh>, std::vector<size_t>>
109  CreateFromPointCloud(const PointCloud &point_cloud);
110 
111 protected:
112  // Forward child class type to avoid indirect nonvirtual base
114 
115 public:
117  std::vector<Eigen::Vector4i, utility::Vector4i_allocator> tetras_;
118 };
119 
120 } // namespace geometry
121 } // namespace open3d
std::shared_ptr< TriangleMesh > ExtractTriangleMesh(const std::vector< double > &values, double level)
Function to extract a triangle mesh of the specified iso-surface at a level This method applies prima...
Definition: TetraMesh.cpp:190
TetraMesh & RemoveDuplicatedVertices()
Function that removes duplicated verties, i.e., vertices that have identical coordinates.
Definition: TetraMesh.cpp:67
TetraMesh operator+(const TetraMesh &mesh) const
Definition: TetraMesh.cpp:63
The base geometry class.
Definition: Geometry.h:37
MeshBash Class.
Definition: MeshBase.h:51
A point cloud consists of point coordinates, and optionally point colors and point normals...
Definition: PointCloud.h:54
TetraMesh & RemoveUnreferencedVertices()
This function removes vertices from the tetra mesh that are not referenced in any tetrahedron of the ...
Definition: TetraMesh.cpp:133
TetraMesh & RemoveDuplicatedTetras()
Function that removes duplicated tetrahedra, i.e., removes tetrahedra that reference the same four ve...
Definition: TetraMesh.cpp:103
TetraMesh()
Default Constructor.
Definition: TetraMesh.h:51
bool HasTetras() const
Returns true if the mesh contains tetras.
Definition: TetraMesh.h:90
TetraMesh & operator+=(const TetraMesh &mesh)
Definition: TetraMesh.cpp:48
~TetraMesh() override
Definition: TetraMesh.h:62
TetraMesh(const std::vector< Eigen::Vector3d > &vertices, const std::vector< Eigen::Vector4i, utility::Vector4i_allocator > &tetras)
Parameterized Constructor.
Definition: TetraMesh.h:57
TetraMesh & RemoveDegenerateTetras()
Function that removes degenerate tetrahedra, i.e., tetrahedra that reference a single vertex multiple...
Definition: TetraMesh.cpp:170
std::vector< Eigen::Vector4i, utility::Vector4i_allocator > tetras_
List of tetras denoted by the index of points forming the tetra.
Definition: TetraMesh.h:117
TetraMesh & Clear() override
Clear all elements in the geometry.
Definition: TetraMesh.cpp:42
Tetra mesh contains vertices and tetrahedra represented by the indices to the vertices.
Definition: TetraMesh.h:48
char type
Definition: FilePCD.cpp:60
static std::tuple< std::shared_ptr< TetraMesh >, std::vector< size_t > > CreateFromPointCloud(const PointCloud &point_cloud)
Function that creates a tetrahedral mesh (TetraMeshFactory.cpp). from a point cloud.
Definition: TetraMeshFactory.cpp:36
Definition: PinholeCameraIntrinsic.cpp:35
GeometryType
Specifies possible geometry types.
Definition: Geometry.h:42
TetraMesh(Geometry::GeometryType type)
Definition: TetraMesh.h:113
std::vector< Eigen::Vector3d > vertices_
Vertex coordinates.
Definition: MeshBase.h:148