Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/boundary_conditions.h

@@ -0,0 +1,55 @@
+// 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_BOUNDARY_CONDITIONS_H
+#define IGL_BOUNDARY_CONDITIONS_H
+#include "igl_inline.h"
+#include <Eigen/Dense>
+
+namespace igl
+{
+
+  // Compute boundary conditions for automatic weights computation. This
+  // function expects that the given mesh (V,Ele) has sufficient samples
+  // (vertices) exactly at point handle locations and exactly along bone and
+  // cage edges.
+  //
+  // Inputs:
+  //   V  #V by dim list of domain vertices
+  //   Ele  #Ele by simplex-size list of simplex indices
+  //   C  #C by dim list of handle positions
+  //   P  #P by 1 list of point handle indices into C
+  //   BE  #BE by 2 list of bone edge indices into C
+  //   CE  #CE by 2 list of cage edge indices into *P*
+  // Outputs:
+  //   b  #b list of boundary indices (indices into V of vertices which have
+  //     known, fixed values)
+  //   bc #b by #weights list of known/fixed values for boundary vertices
+  //     (notice the #b != #weights in general because #b will include all the
+  //     intermediary samples along each bone, etc.. The ordering of the
+  //     weights corresponds to [P;BE]
+  // Returns false if boundary conditions are suspicious:
+  //   P and BE are empty
+  //   bc is empty
+  //   some column of bc doesn't have a 0 (assuming bc has >1 columns)
+  //   some column of bc doesn't have a 1 (assuming bc has >1 columns)
+  IGL_INLINE bool boundary_conditions(
+    const Eigen::MatrixXd & V,
+    const Eigen::MatrixXi & Ele,
+    const Eigen::MatrixXd & C,
+    const Eigen::VectorXi & P,
+    const Eigen::MatrixXi & BE,
+    const Eigen::MatrixXi & CE,
+    Eigen::VectorXi & b,
+    Eigen::MatrixXd & bc);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "boundary_conditions.cpp"
+#endif
+
+#endif