/***********************************************************************************
 *                                                                                 *
 * Voreen - The Volume Rendering Engine                                            *
 *                                                                                 *
 * Copyright (C) 2005-2013 University of Muenster, Germany.                        *
 * Visualization and Computer Graphics Group <http://viscg.uni-muenster.de>        *
 * For a list of authors please refer to the file "CREDITS.txt".                   *
 *                                                                                 *
 * This file is part of the Voreen software package. Voreen is free software:      *
 * you can redistribute it and/or modify it under the terms of the GNU General     *
 * Public License version 2 as published by the Free Software Foundation.          *
 *                                                                                 *
 * Voreen 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 General Public License for more details.      *
 *                                                                                 *
 * You should have received a copy of the GNU General Public License in the file   *
 * "LICENSE.txt" along with this file. If not, see <http://www.gnu.org/licenses/>. *
 *                                                                                 *
 * For non-commercial academic use see the license exception specified in the file *
 * "LICENSE-academic.txt". To get information about commercial licensing please    *
 * contact the authors.                                                            *
 *                                                                                 *
 ***********************************************************************************/

#ifndef VRN_SIMPLETEXTURE_H
#define VRN_SIMPLETEXTURE_H

#include "tgt/vector.h"

namespace voreen {

template<typename T>
class SimpleTexture {
public:
    typedef T ElemType;

public:
    SimpleTexture(const tgt::ivec2& dimensions, const bool autoFree = true);
    SimpleTexture(const tgt::ivec3& dimensions, const bool autoFree = true);
    virtual ~SimpleTexture();

    virtual void free();

    const T* getData() const { return data_; }

    const tgt::ivec3 getDimensions() const { return dimensions_; }
    size_t getNumElements() const { return numElements_; }

    bool doesAutoFree() const { return autoFree_; }
    void setAutoFree(const bool autoFree) { autoFree_ = autoFree; }

    const T& operator[](size_t index) const;
    const T& operator[](const tgt::ivec2& position) const;
    const T& operator[](const tgt::ivec3& position) const;

    T& operator[](size_t index);
    T& operator[](const tgt::ivec2& position);
    T& operator[](const tgt::ivec3& position);

    void createWhiteNoise();

protected:
    size_t positionToIndex(const tgt::ivec2& position) const;
    size_t positionToIndex(const tgt::ivec3& position) const;

protected:
    const tgt::ivec3 dimensions_;
    const size_t numElements_;
    T* const data_;
    bool autoFree_;

private:
    SimpleTexture(const SimpleTexture&);
    SimpleTexture& operator=(const SimpleTexture&);
};

}   // namespace

#endif
