// This file is part of libigl, a simple c++ geometry processing library. // // Copyright (C) 2013 Alec Jacobson // // 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_ANGULAR_DISTANCE_H #define IGL_ANGULAR_DISTANCE_H #include "igl_inline.h" #include namespace igl { // The "angular distance" between two unit quaternions is the angle of the // smallest rotation (treated as an Axis and Angle) that takes A to B. // // Inputs: // A unit quaternion // B unit quaternion // Returns angular distance IGL_INLINE double angular_distance( const Eigen::Quaterniond & A, const Eigen::Quaterniond & B); } #ifndef IGL_STATIC_LIBRARY #include "angular_distance.cpp" #endif #endif