Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/readBF.h

@@ -0,0 +1,67 @@
+// 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_READBF_H
+#define IGL_READBF_H
+#include "igl_inline.h"
+#include <Eigen/Core>
+#include <string>
+namespace igl
+{
+  // Read a bones forest from a file, returns a list of bone roots
+  // Input:
+  //   file_name  path to .bf bones tree file
+  // Output:
+  //   WI  #B list of unique weight indices
+  //   P  #B list of parent indices into B, -1 for roots
+  //   O  #B by 3 list of tip offset vectors from parent (or position for roots)
+  // Returns true on success, false on errors
+  template < 
+    typename DerivedWI,
+    typename DerivedP,
+    typename DerivedO>
+  IGL_INLINE bool readBF(
+    const std::string & filename,
+    Eigen::PlainObjectBase<DerivedWI> & WI,
+    Eigen::PlainObjectBase<DerivedP> & P,
+    Eigen::PlainObjectBase<DerivedO> & O);
+  // Read bone forest into pure bone-skeleton format, expects only bones (no
+  // point handles), and that a root in the .bf <---> no weight attachment.
+  //
+  // Input:
+  //   file_name  path to .bf bones tree file
+  // Output:
+  //   WI  #B list of unique weight indices
+  //   P  #B list of parent indices into B, -1 for roots
+  //   O  #B by 3 list of tip offset vectors from parent (or position for roots)
+  //   C  #C by 3 list of absolute joint locations
+  //   BE  #BE by 3 list of bone indices into C, in order of weight index
+  //   P  #BE list of parent bone indices into BE, -1 means root bone
+  // Returns true on success, false on errors
+  //   
+  // See also: readTGF, bone_parents, forward_kinematics
+  template < 
+    typename DerivedWI,
+    typename DerivedbfP,
+    typename DerivedO,
+    typename DerivedC,
+    typename DerivedBE,
+    typename DerivedP>
+  IGL_INLINE bool readBF(
+    const std::string & filename,
+    Eigen::PlainObjectBase<DerivedWI> & WI,
+    Eigen::PlainObjectBase<DerivedbfP> & bfP,
+    Eigen::PlainObjectBase<DerivedO> & O,
+    Eigen::PlainObjectBase<DerivedC> & C,
+    Eigen::PlainObjectBase<DerivedBE> & BE,
+    Eigen::PlainObjectBase<DerivedP> & P);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "readBF.cpp"
+#endif
+#endif