trackball.h
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00001 // This file is part of Eigen, a lightweight C++ template library
00002 // for linear algebra.
00003 //
00004 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
00005 //
00006 // Eigen is free software; you can redistribute it and/or
00007 // modify it under the terms of the GNU Lesser General Public
00008 // License as published by the Free Software Foundation; either
00009 // version 3 of the License, or (at your option) any later version.
00010 //
00011 // Alternatively, you can redistribute it and/or
00012 // modify it under the terms of the GNU General Public License as
00013 // published by the Free Software Foundation; either version 2 of
00014 // the License, or (at your option) any later version.
00015 //
00016 // Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
00017 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00018 // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
00019 // GNU General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Lesser General Public
00022 // License and a copy of the GNU General Public License along with
00023 // Eigen. If not, see <http://www.gnu.org/licenses/>.
00024 
00025 #ifndef EIGEN_TRACKBALL_H
00026 #define EIGEN_TRACKBALL_H
00027 
00028 #include <Eigen/Geometry>
00029 
00030 class Camera;
00031 
00032 class Trackball
00033 {
00034   public:
00035 
00036     enum Mode {Around, Local};
00037 
00038     Trackball() : mpCamera(0) {}
00039 
00040     void start(Mode m = Around) { mMode = m; mLastPointOk = false; }
00041 
00042     void setCamera(Camera* pCam) { mpCamera = pCam; }
00043 
00044     void track(const Eigen::Vector2i& newPoint2D);
00045 
00046   protected:
00047 
00048     bool mapToSphere( const Eigen::Vector2i& p2, Eigen::Vector3f& v3);
00049 
00050     Camera* mpCamera;
00051     Eigen::Vector3f mLastPoint3D;
00052     Mode mMode;
00053     bool mLastPointOk;
00054 
00055 };
00056 
00057 #endif // EIGEN_TRACKBALL_H


libicr
Author(s): Robert Krug
autogenerated on Mon Jan 6 2014 11:33:44