Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/collapse_small_triangles.h

@@ -0,0 +1,40 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2014 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_COLLAPSE_SMALL_TRIANGLES_H
+#define IGL_COLLAPSE_SMALL_TRIANGLES_H
+#include <Eigen/Dense>
+namespace igl
+{
+  // Given a triangle mesh (V,F) compute a new mesh (VV,FF) which contains the
+  // original faces and vertices of (V,F) except any small triangles have been
+  // removed via collapse.
+  //
+  // We are *not* following the rules in "Mesh Optimization" [Hoppe et al]
+  // Section 4.2. But for our purposes we don't care about this criteria.
+  //
+  // Inputs:
+  //   V  #V by 3 list of vertex positions
+  //   F  #F by 3 list of triangle indices into V
+  //   eps  epsilon for smallest allowed area treated as fraction of squared bounding box
+  //     diagonal
+  // Outputs:
+  //   FF  #FF by 3 list of triangle indices into V
+  //
+  //
+  void collapse_small_triangles(
+    const Eigen::MatrixXd & V,
+    const Eigen::MatrixXi & F,
+    const double eps,
+    Eigen::MatrixXi & FF);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "collapse_small_triangles.cpp"
+#endif
+  
+#endif