VRS - The Virtual Rendering System

version 3.3

packedcoloriterator.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2000-2006 Computer Graphics Systems Group at the 
 * Hasso-Plattner-Institute (HPI), Potsdam, Germany.
 *
 * This  library  is  free  software; you can redistribute it and/or  modify it
 * under the terms of the GNU Lesser General Public  License  as  published  by
 * the  Free  Software  Foundation;  either  version 2.1 of the License, or (at
 * your option) any later version. This library  is  distributed  in  the  hope
 * that  it will be useful, but  WITHOUT ANY WARRANTY; without even the implied
 * warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.  See  the
 * GNU Lesser General Public License for more details. You should have received
 * a copy of the GNU Lesser+ General Public License along with this library; if
 * not, write to the FreeSoftware Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA, 02111-1307, USA.
 ******************************************************************************/

// $Id: packedcoloriterator.h 5273 2006-04-03 12:49:52Z baumann $
//
// $Log$
// Revision 1.2  2006/04/03 12:49:52  baumann
// workaround for a VC 7.1 linker bug
//
// Revision 1.1  2006/03/31 13:32:53  baumann
// initial version of VRS::PackedColorIterator checked in
//

#ifndef VRS_CONTAINER_PACKEDCOLORITERATOR_H
#define VRS_CONTAINER_PACKEDCOLORITERATOR_H

#include <vrs/container/iterator.h>
#include <vrs/color.h>
#include <vector>

namespace VRS {

    template<typename COLOR>
    class PackedColorIteratorBase :
        public Iterator<COLOR>
    {
    public:
        VRS_TYPEINFO(PackedColorIteratorBase, Iterator<COLOR>);
        VRS_SERIALIZABLE(PackedColorIteratorBase);

    public:
        PackedColorIteratorBase(
            SO<Iterator<Color> > colors
        ) :
            Iterator<Color>(),
            m_colors()
        {
            if(!colors || (colors->size() == 0)) { return; }

            m_colors.resize(colors->size());
            for(unsigned int i = 0, iEnd = colors->size(); i < iEnd; ++i) {
                const Color c = colors->get(i);
                m_colors[i] = Color4ub(
                    static_cast<unsigned char>(c[0] * 255.0 + 0.5),
                    static_cast<unsigned char>(c[1] * 255.0 + 0.5),
                    static_cast<unsigned char>(c[2] * 255.0 + 0.5),
                    static_cast<unsigned char>(c[3] * 255.0 + 0.5)
                );
            }
        }

    public:
        virtual unsigned int size() const {
            return m_colors.size();
        }

        virtual COLOR get(
            unsigned int i
        ) const {
            return COLOR(
                static_cast<double>(m_colors[i][0]) / 255.0,
                static_cast<double>(m_colors[i][1]) / 255.0,
                static_cast<double>(m_colors[i][2]) / 255.0,
                static_cast<double>(m_colors[i][3]) / 255.0
            );
        }

    protected:
        PackedColorIteratorBase() { } // only for serialization!!!

    private:
        typedef VertexData<4, unsigned char> Color4ub;
        std::vector<Color4ub> m_colors;
    }; // class PackedColorIteratorBase

    template<typename COLOR>
    void PackedColorIteratorBase<COLOR>::serialize(
        SerializationManager& manager
    ) {
            UINT8 version = 0;
            manager.classVersion(version);

        VRS_SERIALIZATION_PARENT_CLASS(manager, Iterator<COLOR>);
        serialization(manager, "colors", m_colors);
    }

    VRS_SERIALIZATION_REGISTRATION_TEMPLATE(PackedColorIteratorBase);

    typedef PackedColorIteratorBase<Color> PackedColorIterator;

} // namespace VRS

#endif // VRS_CONTAINER_PACKEDCOLORITERATOR_H

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