Refactor folder (#10475)

Move many third-party components' source codes from the src folder to a new folder called deps_src. The goal is to make the code structure clearer and easier to navigate.

deps_src/libigl/igl/copyleft/cgal/lexicographic_triangulation.cpp

@@ -0,0 +1,24 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2016 Alec Jacobson <alecjacobson@gmail.com>
+//                    Qingan Zhou <qnzhou@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 "lexicographic_triangulation.h"
+#include "../../lexicographic_triangulation.h"
+#include "orient2D.h"
+
+template<
+  typename DerivedP,
+  typename DerivedF
+  >
+IGL_INLINE void igl::copyleft::cgal::lexicographic_triangulation(
+    const Eigen::PlainObjectBase<DerivedP>& P,
+    Eigen::PlainObjectBase<DerivedF>& F)
+{
+  typedef typename DerivedP::Scalar Scalar;
+  igl::lexicographic_triangulation(P, orient2D<Scalar>, F);
+}