Added libigl library files (header-only library)

xs/src/igl/average_onto_vertices.h

@@ -0,0 +1,35 @@
+// 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_AVERAGE_ONTO_VERTICES_H
+#define IGL_AVERAGE_ONTO_VERTICES_H
+#include "igl_inline.h"
+
+#include <Eigen/Dense>
+namespace igl 
+{
+  // average_onto_vertices 
+  // Move a scalar field defined on faces to vertices by averaging
+  //
+  // Input:
+  // V,F: mesh
+  // S: scalar field defined on faces, Fx1
+  // 
+  // Output:
+  // SV: scalar field defined on vertices
+  template<typename DerivedV,typename DerivedF,typename DerivedS>
+  IGL_INLINE void average_onto_vertices(const Eigen::MatrixBase<DerivedV> &V,
+    const Eigen::MatrixBase<DerivedF> &F,
+    const Eigen::MatrixBase<DerivedS> &S,
+    Eigen::MatrixBase<DerivedS> &SV);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "average_onto_vertices.cpp"
+#endif
+
+#endif