Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/unique_edge_map.h

@@ -0,0 +1,44 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2015 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/.
+#ifndef IGL_UNIQUE_EDGE_MAP_H
+#define IGL_UNIQUE_EDGE_MAP_H
+#include "igl_inline.h"
+#include <Eigen/Dense>
+#include <vector>
+namespace igl
+{
+  // Construct relationships between facet "half"-(or rather "viewed")-edges E
+  // to unique edges of the mesh seen as a graph.
+  //
+  // Inputs:
+  //   F  #F by 3  list of simplices
+  // Outputs:
+  //   E  #F*3 by 2 list of all of directed edges
+  //   uE  #uE by 2 list of unique undirected edges
+  //   EMAP #F*3 list of indices into uE, mapping each directed edge to unique
+  //     undirected edge
+  //   uE2E  #uE list of lists of indices into E of coexisting edges
+  template <
+    typename DerivedF,
+    typename DerivedE,
+    typename DeriveduE,
+    typename DerivedEMAP,
+    typename uE2EType>
+  IGL_INLINE void unique_edge_map(
+    const Eigen::MatrixBase<DerivedF> & F,
+    Eigen::PlainObjectBase<DerivedE> & E,
+    Eigen::PlainObjectBase<DeriveduE> & uE,
+    Eigen::PlainObjectBase<DerivedEMAP> & EMAP,
+    std::vector<std::vector<uE2EType> > & uE2E);
+
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "unique_edge_map.cpp"
+#endif
+
+#endif