114 lines
3.7 KiB
C++
114 lines
3.7 KiB
C++
#include <vector>
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using namespace std;
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// VCG headers for triangular mesh processing
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#include <vcg/complex/trimesh/base.h>
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#include <vcg/complex/trimesh/update/topology.h>
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#include <vcg/complex/trimesh/update/edges.h>
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#include <vcg/complex/trimesh/update/bounding.h>
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#include <vcg/complex/trimesh/update/flag.h>
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#include <vcg/complex/trimesh/clean.h>
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#include <vcg/complex/intersection.h>
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#include <vcg/space/index/grid_static_ptr.h>
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#include <vcg/simplex/edge/with/ae.h>
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#include <vcg/complex/edgemesh/base.h>
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#include <vcg/complex/edgemesh/allocate.h>
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#include <vcg/complex/edgemesh/update/bounding.h>
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// VCG File Format Importer/Exporter
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#include <wrap/io_trimesh/import.h>
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#include <wrap/io_edgemesh/export_svg.h>
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// VCG Vertex
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#include <vcg/simplex/vertex/vertex.h>
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#include <vcg/simplex/vertex/with/afvn.h>
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// VCG Faces
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#include <vcg/simplex/face/face.h>
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#include <vcg/simplex/face/with/afav.h>
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using namespace vcg;
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class MyFace;
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class MyEdge;
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class MyVertex : public VertexAFVN<float, MyEdge, MyFace> {};
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class MyFace : public FaceAFAV< MyVertex, MyEdge, MyFace > {};
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class MyEdge : public vcg::EdgeAE<MyEdge, MyVertex> {};
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class MyMesh : public vcg::tri::TriMesh< vector<MyVertex>, vector<MyFace> > {};
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class MyEdgeMesh: public vcg::edge::EdgeMesh< vector<MyVertex>, vector<MyEdge> > {};
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typedef vcg::GridStaticPtr<MyMesh::FaceType, MyMesh::ScalarType> TriMeshGrid;
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int main(int argc,char ** argv)
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{
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if (argc<6)
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{
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printf("\n");
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printf(" Usage: trimesh_intersection <filename> <a> <b> <c> <d>\n\n");
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printf(" <filename> Mesh model to intersect (PLY format).\n");
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printf(" <a> <b> <c> <d> The coefficients that specifying a plane in the form:\n\n");
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printf(" a*x + b*y + c*z + d = 0\n\n\n");
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printf(" Example: trimesh_intersection bunny.ply 0.0 1.0 0.0 0.0\n\n");
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return 0;
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}
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MyMesh m;
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// open a mesh
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int err = tri::io::Importer<MyMesh>::Open(m,argv[1]);
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if(err)
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{
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printf("Error in reading %s: '%s'\n",argv[1],tri::io::Importer<MyMesh>::ErrorMsg(err));
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exit(-1);
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}
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// some cleaning to get rid of bad file formats like stl that duplicate vertexes..
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int dup = tri::Clean<MyMesh>::RemoveDuplicateVertex(m);
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int unref = tri::Clean<MyMesh>::RemoveUnreferencedVertex(m);
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if (dup > 0 || unref > 0)
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printf("Removed %i duplicate and %i unreferenced vertices from mesh %s\n",dup,unref,argv[1]);
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printf("");
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// Compute cross-intersection with the given plane
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/////////////////////////////////////////////////////////
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MyMesh::ScalarType a = static_cast<MyMesh::ScalarType>(atof(argv[2]));
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MyMesh::ScalarType b = static_cast<MyMesh::ScalarType>(atof(argv[3]));
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MyMesh::ScalarType c = static_cast<MyMesh::ScalarType>(atof(argv[4]));
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MyMesh::ScalarType d = static_cast<MyMesh::ScalarType>(atof(argv[5]));
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vcg::Point3<MyMesh::ScalarType> direction(a, b, c);
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MyMesh::ScalarType distance = -d / direction.Norm();
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direction.Normalize();
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vcg::Plane3<MyMesh::ScalarType> plane(distance, direction);
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double avg_length; // average length of the edges
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MyEdgeMesh edge_mesh; // returned EdgeMesh (i.e. the cross-section)
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// Create a static grid (for fast indexing) and fill it
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TriMeshGrid static_grid;
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static_grid.Set(m.face.begin(), m.face.end());
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std::vector<TriMeshGrid::Cell *> intersected_cells;
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vcg::Intersection<MyMesh, MyEdgeMesh, MyMesh::ScalarType, TriMeshGrid>(plane,
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edge_mesh, avg_length, &static_grid, intersected_cells);
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// Compute bounding box
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vcg::edge::UpdateBounding<MyEdgeMesh>::Box(edge_mesh);
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// export the cross-section
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if (vcg::edge::io::ExporterSVG<MyEdgeMesh>::Save(&edge_mesh, "out.svg"))
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printf(" The cross-intersection has been successfully saved (OUT.SVG).\n");
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else
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printf(" The cross-intersection cannot be saved.\n");
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return 0;
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}
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