update bundled_deps

bundled_deps/libigl/igl/quat_to_axis_angle.h

@@ -0,0 +1,40 @@
+// 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_QUAT_TO_AXIS_ANGLE_H
+#define IGL_QUAT_TO_AXIS_ANGLE_H
+#include "igl_inline.h"
+
+namespace igl
+{
+  // Convert quat representation of a rotation to axis angle
+  // A Quaternion, q, is defined here as an arrays of four scalars (x,y,z,w),
+  // such that q = x*i + y*j + z*k + w
+  // Inputs:
+  //   q quaternion
+  // Outputs:
+  //   axis  3d vector
+  //   angle  scalar in radians
+  template <typename Q_type>
+  IGL_INLINE void quat_to_axis_angle(
+    const Q_type *q,
+    Q_type *axis, 
+    Q_type & angle);
+  // Wrapper with angle in degrees
+  template <typename Q_type>
+  IGL_INLINE void quat_to_axis_angle_deg(
+    const Q_type *q,
+    Q_type *axis, 
+    Q_type & angle);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "quat_to_axis_angle.cpp"
+#endif
+
+#endif
+