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30 lines
908 B
C++
30 lines
908 B
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_ANGULAR_DISTANCE_H
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#define IGL_ANGULAR_DISTANCE_H
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#include "igl_inline.h"
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#include <Eigen/Geometry>
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namespace igl
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{
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// The "angular distance" between two unit quaternions is the angle of the
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// smallest rotation (treated as an Axis and Angle) that takes A to B.
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//
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// Inputs:
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// A unit quaternion
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// B unit quaternion
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// Returns angular distance
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IGL_INLINE double angular_distance(
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const Eigen::Quaterniond & A,
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const Eigen::Quaterniond & B);
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "angular_distance.cpp"
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#endif
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#endif
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