Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/orient_outward.h

@@ -0,0 +1,43 @@
+// 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/.
+#ifndef IGL_ORIENT_OUTWARD_H
+#define IGL_ORIENT_OUTWARD_H
+#include "igl_inline.h"
+#include <Eigen/Core>
+namespace igl
+{
+  // Orient each component (identified by C) of a mesh (V,F) so the normals on
+  // average point away from the patch's centroid.
+  //
+  // Inputs:
+  //   V  #V by 3 list of vertex positions
+  //   F  #F by 3 list of triangle indices
+  //   C  #F list of components (output of orientable_patches)
+  // Outputs:
+  //   FF  #F by 3 list of new triangle indices such that FF(~I,:) = F(~I,:) and
+  //     FF(I,:) = fliplr(F(I,:)) (OK if &FF = &F)
+  //   I  max(C)+1 list of whether face has been flipped
+  template <
+    typename DerivedV, 
+    typename DerivedF, 
+    typename DerivedC, 
+    typename DerivedFF, 
+    typename DerivedI>
+  IGL_INLINE void orient_outward(
+    const Eigen::PlainObjectBase<DerivedV> & V,
+    const Eigen::PlainObjectBase<DerivedF> & F,
+    const Eigen::PlainObjectBase<DerivedC> & C,
+    Eigen::PlainObjectBase<DerivedFF> & FF,
+    Eigen::PlainObjectBase<DerivedI> & I);
+};
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "orient_outward.cpp"
+#endif
+
+#endif