Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/frame_field_deformer.h

@@ -0,0 +1,49 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+//
+// Copyright (C) 2014 Daniele Panozzo <daniele.panozzo@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_FRAME_FIELD_DEFORMER_H
+#define IGL_FRAME_FIELD_DEFORMER_H
+#include "igl_inline.h"
+
+#include <Eigen/Dense>
+
+namespace igl
+{
+  // Deform a mesh to transform the given per-face frame field to be as close
+  // as possible to a cross field, in the least square sense.
+  //
+  // Inputs:
+  //   V       #V by 3 coordinates of the vertices
+  //   F       #F by 3 list of mesh faces (must be triangles)
+  //   FF1     #F by 3 first representative vector of the frame field
+  //   FF2     #F by 3 second representative vector of the frame field
+  //   lambda  laplacian regularization parameter 0=no regularization 1=full regularization
+  //
+  // Outputs:
+  //   V_d     #F by 3 deformed, first representative vector
+  //   V_d     #F by 3 deformed, first representative vector
+  //   V_d     #F by 3 deformed, first representative vector
+  //
+  IGL_INLINE void frame_field_deformer(
+    const Eigen::MatrixXd& V,
+    const Eigen::MatrixXi& F,
+    const Eigen::MatrixXd& FF1,
+    const Eigen::MatrixXd& FF2,
+    Eigen::MatrixXd&       V_d,
+    Eigen::MatrixXd&       FF1_d,
+    Eigen::MatrixXd&       FF2_d,
+    const int              iterations = 50,
+    const double           lambda = 0.1,
+    const bool             perturb_initial_guess = true);
+
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "frame_field_deformer.cpp"
+#endif
+
+#endif