Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/directed_edge_orientations.h

@@ -0,0 +1,39 @@
+// 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_DIRECTED_EDGE_ORIENTATIONS_H
+#define IGL_DIRECTED_EDGE_ORIENTATIONS_H
+#include "igl_inline.h"
+
+#include <Eigen/Core>
+#include <Eigen/Geometry>
+#include <Eigen/StdVector>
+#include <vector>
+
+namespace igl
+{
+  // Determine rotations that take each edge from the x-axis to its given rest
+  // orientation.
+  //
+  // Inputs:
+  //   C  #C by 3 list of edge vertex positions
+  //   E  #E by 2 list of directed edges
+  // Outputs:
+  //   Q  #E list of quaternions 
+  //
+  template <typename DerivedC, typename DerivedE>
+  IGL_INLINE void directed_edge_orientations(
+    const Eigen::PlainObjectBase<DerivedC> & C,
+    const Eigen::PlainObjectBase<DerivedE> & E,
+    std::vector<
+      Eigen::Quaterniond,Eigen::aligned_allocator<Eigen::Quaterniond> > & Q);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "directed_edge_orientations.cpp"
+#endif
+#endif