osgScaleViewer/tracker.h

/* Copyright (c) 2006, Dustin Wueest <wueest@dustin.ch>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Eyescale Software GmbH nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef FOB_TRACKER_H
#define FOB_TRACKER_H

#define EQ_IGNORE_GLEW
#include <eq/eq.h>
#include <string>

    class Tracker
    {
    public:
        Tracker();

        bool init( const std::string& port );

        void setWorldToEmitter( const eq::Matrix4f& matrix )
            { _worldToEmitter = matrix; }

        void setSensorToObject( const eq::Matrix4f& matrix )
            { _sensorToObject = matrix; }

        bool isRunning() const { return _running; }

        bool update();

        const eq::Matrix4f& getMatrix() const { return _matrix; }

    private:
        bool _update(); //update without state checking
        bool _read( unsigned char* buffer, const size_t size,
                    const unsigned long int timeout );

        bool  _running;

        int   _fd;

        eq::Matrix4f _matrix;

        eq::Matrix4f _worldToEmitter;
        eq::Matrix4f _sensorToObject;
    };

#endif // FOB_TRACKER_H