Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/voxel_grid.h

@@ -0,0 +1,39 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2016 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_VOXEL_GRID_H
+#define IGL_VOXEL_GRID_H
+#include "igl_inline.h"
+#include <Eigen/Core>
+#include <Eigen/Geometry>
+namespace igl
+{
+  // Construct the cell center positions of a regular voxel grid (lattice) made
+  // of perfectly square voxels.
+  // 
+  // Inputs:
+  //   box  bounding box to enclose by grid
+  //   s  number of cell centers on largest side (including 2*pad_count)
+  //   pad_count  number of cells beyond box
+  // Outputs:
+  //   GV  side(0)*side(1)*side(2) by 3 list of cell center positions
+  //   side  3-long list of dimension of voxel grid
+  template <
+    typename Scalar,
+    typename DerivedGV,
+    typename Derivedside>
+  IGL_INLINE void voxel_grid(
+    const Eigen::AlignedBox<Scalar,3> & box, 
+    const int s,
+    const int pad_count,
+    Eigen::PlainObjectBase<DerivedGV> & GV,
+    Eigen::PlainObjectBase<Derivedside> & side);
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "voxel_grid.cpp"
+#endif
+#endif