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/is_border_vertex.h

@@ -0,0 +1,38 @@
+// 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_IS_BORDER_VERTEX_H
+#define IGL_IS_BORDER_VERTEX_H
+#include "igl_inline.h"
+
+#include <Eigen/Core>
+#include <vector>
+
+namespace igl 
+{
+  // Determine vertices on open boundary of a (manifold) mesh with triangle
+  // faces F
+  //
+  // Inputs:
+  //   V  #V by dim list of vertex positions 
+  //   F  #F by 3 list of triangle indices
+  // Returns #V vector of bools revealing whether vertices are on boundary
+  //
+  // Known Bugs: - does not depend on V
+  //             - assumes mesh is edge manifold
+  // 
+  template <typename DerivedV, typename DerivedF>
+  IGL_INLINE std::vector<bool> is_border_vertex(
+   const Eigen::PlainObjectBase<DerivedV> &V,
+   const Eigen::PlainObjectBase<DerivedF> &F);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "is_border_vertex.cpp"
+#endif
+
+#endif