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// ================================================================================================
// 
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// This file is part of the CAMPVis Software Framework.
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// 
// If not explicitly stated otherwise: Copyright (C) 2012, all rights reserved,
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//      Christian Schulte zu Berge <christian.szb@in.tum.de>
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//      Chair for Computer Aided Medical Procedures
//      Technische Universität München
//      Boltzmannstr. 3, 85748 Garching b. München, Germany
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// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
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// 
// The licensing of this softare is not yet resolved. Until then, redistribution in source or
// binary forms outside the CAMP chair is not permitted, unless explicitly stated in legal form.
// However, the names of the original authors and the above copyright notice must retain in its
// original state in any case.
// 
// Legal disclaimer provided by the BSD license:
// 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.
// 
// ================================================================================================

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#ifndef DRRRAYCASTER_H__
#define DRRRAYCASTER_H__

#include <string>

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#include "core/pipeline/raycastingprocessor.h"
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#include "core/properties/genericproperty.h"
#include "core/properties/numericproperty.h"
#include "core/properties/transferfunctionproperty.h"

namespace tgt {
    class Shader;
}

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namespace campvis {
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    class ImageData;

    /**
     * Creates a Digitally Reconstructed Radiograph.
     */
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    class DRRRaycaster : public RaycastingProcessor {
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    public:
        /**
         * Constructs a new DRRRaycaster Processor
         **/
        DRRRaycaster(GenericProperty<tgt::ivec2>& canvasSize);

        /**
         * Destructor
         **/
        virtual ~DRRRaycaster();

        /// \see AbstractProcessor::getName()
        virtual const std::string getName() const { return "DRRRaycaster"; };
        /// \see AbstractProcessor::getDescription()
        virtual const std::string getDescription() const { return "Creates a Digitally Reconstructed Radiograph."; };

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        DataNameProperty _targetImageID;    ///< image ID for output image
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        FloatProperty _shift;
        FloatProperty _scale;
        BoolProperty _invertMapping;

    protected:
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        /// \see RaycastingProcessor::processImpl()
        virtual void processImpl(DataContainer& data);
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        /**
         * \see RaycastingProcessor::generateHeader()
         * \return  "#define DRR_INVERT 1" if \a _invertMapping is set to true.
         */
        virtual std::string generateHeader() const;
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        static const std::string loggerCat_;
    };

}

#endif // DRRRAYCASTER_H__