update bundled_deps

2026-02-04 18:08:44 +03:00 · 2024-11-09 14:05:44 +08:00
parent 17c9bfd127
commit cfc606fea9
1662 changed files with 710 additions and 168 deletions
--- a/bundled_deps/libigl/igl/copyleft/tetgen/mesh_with_skeleton.cpp
+++ b/bundled_deps/libigl/igl/copyleft/tetgen/mesh_with_skeleton.cpp
@@ -0,0 +1,102 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#include "mesh_with_skeleton.h"
+#include "tetrahedralize.h"
+
+#include "../../sample_edges.h"
+#include "../../cat.h"
+
+#include <iostream>
+// Default settings pq2Y tell tetgen to mesh interior of triangle mesh and
+// to produce a graded tet mesh
+const static std::string DEFAULT_TETGEN_FLAGS = "pq2Y";
+
+IGL_INLINE bool igl::copyleft::tetgen::mesh_with_skeleton(
+  const Eigen::MatrixXd & V,
+  const Eigen::MatrixXi & F,
+  const Eigen::MatrixXd & C,
+  const Eigen::VectorXi & /*P*/,
+  const Eigen::MatrixXi & BE,
+  const Eigen::MatrixXi & CE,
+  const int samples_per_bone,
+  const std::string & tetgen_flags,
+  Eigen::MatrixXd & VV,
+  Eigen::MatrixXi & TT,
+  Eigen::MatrixXi & FF)
+{
+  using namespace Eigen;
+  using namespace std;
+  const string eff_tetgen_flags = 
+    (tetgen_flags.length() == 0?DEFAULT_TETGEN_FLAGS:tetgen_flags);
+  // Collect all edges that need samples:
+  MatrixXi BECE = cat(1,BE,CE);
+  MatrixXd S;
+  // Sample each edge with 10 samples. (Choice of 10 doesn't seem to matter so
+  // much, but could under some circumstances)
+  sample_edges(C,BECE,samples_per_bone,S);
+  // Vertices we'll constrain tet mesh to meet
+  MatrixXd VS = cat(1,V,S);
+  // Use tetgen to mesh the interior of surface, this assumes surface:
+  //   * has no holes
+  //   * has no non-manifold edges or vertices
+  //   * has consistent orientation
+  //   * has no self-intersections
+  //   * has no 0-volume pieces
+  cerr<<"tetgen begin()"<<endl;
+  int status = tetrahedralize( VS,F,eff_tetgen_flags,VV,TT,FF);
+  cerr<<"tetgen end()"<<endl;
+  if(FF.rows() != F.rows())
+  {
+    // Issue a warning if the surface has changed
+    cerr<<"mesh_with_skeleton: Warning: boundary faces != input faces"<<endl;
+  }
+  if(status != 0)
+  {
+    cerr<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl<<
+      "* mesh_with_skeleton: tetgen failed. Just meshing convex hull *"<<endl<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl<<
+      "***************************************************************"<<endl;
+    // If meshing convex hull then use more regular mesh
+    status = tetrahedralize(VS,F,"q1.414",VV,TT,FF);
+    // I suppose this will fail if the skeleton is outside the mesh
+    assert(FF.maxCoeff() < VV.rows());
+    if(status != 0)
+    {
+      cerr<<"mesh_with_skeleton: tetgen failed again."<<endl;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+IGL_INLINE bool igl::copyleft::tetgen::mesh_with_skeleton(
+  const Eigen::MatrixXd & V,
+  const Eigen::MatrixXi & F,
+  const Eigen::MatrixXd & C,
+  const Eigen::VectorXi & P,
+  const Eigen::MatrixXi & BE,
+  const Eigen::MatrixXi & CE,
+  const int samples_per_bone,
+  Eigen::MatrixXd & VV,
+  Eigen::MatrixXi & TT,
+  Eigen::MatrixXi & FF)
+{
+  return mesh_with_skeleton(
+    V,F,C,P,BE,CE,samples_per_bone,DEFAULT_TETGEN_FLAGS,VV,TT,FF);
+}
+
+#ifdef IGL_STATIC_LIBRARY
+// Explicit template instantiation
+#endif