share/Equalizer/examples/eVolve/channel.h

/* Copyright (c) 2006-2011, Stefan Eilemann <eile@equalizergraphics.com>
 *               2007-2011, Maxim Makhinya  <maxmah@gmail.com>
 *
 * 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 EVOLVE_CHANNEL_H
#define EVOLVE_CHANNEL_H

#include "eVolve.h"
#include "frameData.h"

#include <eq/eq.h>

namespace eVolve
{
    class InitData;

    class Channel : public eq::Channel
    {
    public:
        Channel( eq::Window* parent );

    protected:
        virtual ~Channel() {}

        virtual bool configInit( const eq::uint128_t& initID );
        virtual bool configExit();

        virtual void frameStart( const eq::uint128_t& frameID, 
                                 const uint32_t frameNumber );

        virtual void frameDraw(       const eq::uint128_t& frameID );
        virtual void frameAssemble(   const eq::uint128_t& frameID );
        virtual void frameReadback(   const eq::uint128_t& frameID );
        virtual void frameViewFinish( const eq::uint128_t& frameID );
        virtual void frameClear(      const eq::uint128_t& frameID );

        virtual bool useOrtho() const;

        void clearViewport( const eq::PixelViewport &pvp );

    private:
        void _startAssemble();

        void _orderFrames( eq::Frames& frames );

        void _calcMVandITMV( eq::Matrix4f& modelviewM, 
                             eq::Matrix3f& modelviewITM ) const;

        const FrameData& _getFrameData() const;

        void _drawLogo();
        void _drawHelp();

        eq::Vector3f _bgColor;   
        eq::Frame    _frame;     
        eq::Range    _drawRange; 
        const bool   _taint;     
    };

}

#endif // EVOLVE_CHANNEL_H