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/submesh_aabb_tree.h

@@ -0,0 +1,64 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2016 Alec Jacobson
+// 
+// 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_COPYLET_CGAL_SUBMESH_AABB_TREE_H
+#define IGL_COPYLET_CGAL_SUBMESH_AABB_TREE_H
+
+#include "../../igl_inline.h"
+#include <Eigen/Core>
+#include <vector>
+
+#include <CGAL/AABB_tree.h>
+#include <CGAL/AABB_traits.h>
+#include <CGAL/AABB_triangle_primitive.h>
+#include <CGAL/intersections.h>
+#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
+
+namespace igl
+{
+  namespace copyleft
+  {
+    namespace cgal
+    {
+      // Build an AABB tree for a submesh indicated by a face selection list I
+      // of a full mesh (V,F)
+      //
+      // Inputs:
+      //   V  #V by 3 array of vertices.
+      //   F  #F by 3 array of faces.
+      //   I  #I list of triangle indices to consider.
+      // Outputs:
+      //   tree  aabb containing triangles of (V,F(I,:))
+      //   triangles  #I list of cgal triangles
+      //   in_I  #F list of whether in submesh
+      template<
+        typename DerivedV,
+        typename DerivedF,
+        typename DerivedI,
+        typename Kernel>
+      IGL_INLINE void submesh_aabb_tree(
+        const Eigen::PlainObjectBase<DerivedV>& V,
+        const Eigen::PlainObjectBase<DerivedF>& F,
+        const Eigen::PlainObjectBase<DerivedI>& I,
+        CGAL::AABB_tree<
+          CGAL::AABB_traits<
+            Kernel, 
+            CGAL::AABB_triangle_primitive<
+              Kernel, typename std::vector<
+                typename Kernel::Triangle_3 >::iterator > > > & tree,
+        std::vector<typename Kernel::Triangle_3 > & triangles,
+        std::vector<bool> & in_I);
+    }
+  }
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "submesh_aabb_tree.cpp"
+#endif
+
+#endif