rawVolModelRenderer.h

/* Copyright (c) 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_RAW_VOL_MODEL_RENDERER_H
#define EVOLVE_RAW_VOL_MODEL_RENDERER_H

#include "rawVolModel.h"
#include "sliceClipping.h"
#include "glslShaders.h"


namespace eVolve
{

    class RawVolumeModelRenderer
    {
    public:
        RawVolumeModelRenderer( const std::string& filename,
                                const uint32_t     precision   = 1 );

        bool loadHeader( const float brightness, const float alpha )
        {
            return _rawModel.loadHeader( brightness, alpha );
        }

        const VolumeScaling& getVolumeScaling() const
        {
            return _rawModel.getVolumeScaling();
        }

        void glewSetContext( const GLEWContext* context )
        {
            _glewContext = context;
            _rawModel.glewSetContext( context );
        }


        bool render( const eq::Range&     range,
                     const eq::Matrix4d&  modelviewM,
                     const eq::Matrix3d&  modelviewITM,
                     const eq::Matrix4f&  invRotationM,
                     const eq::Vector4f&  taintColor,
                     const int            normalsQuality );

        void setPrecision( const uint32_t precision ){ _precision = precision; }
        void setOrtho( const uint32_t ortho )        { _ortho = ortho; }

        const GLEWContext* glewGetContext() { return _glewContext; }
        bool loadShaders();

    private:
        void _putVolumeDataToShader( const VolumeInfo&   volumeInfo,
                                     const float         sliceDistance,
                                     const eq::Matrix4f& invRotationM,
                                     const eq::Vector4f& taintColor,
                                     const int           normalsQuality );

        RawVolumeModel  _rawModel;      
        SliceClipper    _sliceClipper;  
        uint32_t        _precision;     
        GLSLShaders     _shaders;       

        const GLEWContext*    _glewContext;   

        bool            _ortho;         

    };

}
#endif // EVOLVE_RAW_VOL_MODEL_RENDERER_H