50 lines
1.6 KiB
C++
50 lines
1.6 KiB
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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#include "two_axis_valuator_fixed_up.h"
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#include "PI.h"
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template <typename Scalardown_quat, typename Scalarquat>
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IGL_INLINE void igl::two_axis_valuator_fixed_up(
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const int w,
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const int h,
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const double speed,
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const Eigen::Quaternion<Scalardown_quat> & down_quat,
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const int down_x,
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const int down_y,
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const int mouse_x,
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const int mouse_y,
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Eigen::Quaternion<Scalarquat> & quat)
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{
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using namespace Eigen;
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Matrix<Scalarquat,3,1> axis(0,1,0);
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quat = down_quat *
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Quaternion<Scalarquat>(
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AngleAxis<Scalarquat>(
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PI*((Scalarquat)(mouse_x-down_x))/(Scalarquat)w*speed/2.0,
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axis.normalized()));
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quat.normalize();
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{
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Matrix<Scalarquat,3,1> axis(1,0,0);
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if(axis.norm() != 0)
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{
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quat =
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Quaternion<Scalarquat>(
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AngleAxis<Scalarquat>(
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PI*(mouse_y-down_y)/(Scalarquat)h*speed/2.0,
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axis.normalized())) * quat;
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quat.normalize();
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}
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template void igl::two_axis_valuator_fixed_up<float, float>(int, int, double, Eigen::Quaternion<float, 0> const&, int, int, int, int, Eigen::Quaternion<float, 0>&);
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template void igl::two_axis_valuator_fixed_up<double, double>(int, int, double, Eigen::Quaternion<double, 0> const&, int, int, int, int, Eigen::Quaternion<double, 0>&);
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#endif
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