VRS - The Virtual Rendering System

version 3.3

animatedgifmaker.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2002 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: animatedgifmaker.h 6014 2007-08-09 07:51:16Z Konstantin_Baumann $
// $Date: 2007-08-09 09:51:16 +0200 (Thu, 09 Aug 2007) $
// $Revision: 6014 $
// $State$
// $Author: Konstantin_Baumann $
//
// $Log$
// Revision 1.9  2005/01/03 01:43:08  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.8  2004/11/03 11:20:07  saar
// Class comment changed (Doxygen style)
//
// Revision 1.7  2004/03/12 16:28:40  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.6  2003/11/07 14:19:24  kirsch
// removed leading underscore from include guards
//
// Revision 1.5  2003/06/23 09:47:42  baumann
// - new compile time switch VRS_HAS_WSTRING added
// - renamed macros VRS_HAVE_* to VRS_HAS_*
// - removed "typedef std::string String;"
// - Font uses ImageTexture2D instead of ImageTexture2DGL
//
// Revision 1.4  2003/02/24 10:05:57  baumann
// changed return type of BehaviorNode::handle() and Manipulator::drag*()
// from "int" to "BehaviorNode::InvalidationHint"
//
// Revision 1.3  2002/11/13 22:12:02  lorenz
// changed base class to LeafBehavior, can set TimeRequirement now
//
// Revision 1.2  2002/11/04 08:53:41  lorenz
// changed framerate from int to float
//
// Revision 1.1  2002/11/03 22:12:09  lorenz
// easy possibility to create animated gif
//

#ifndef VRS_ANIMATEDGIFMAKER_H_
#define VRS_ANIMATEDGIFMAKER_H_

#include <vrs/sg/leafbehavior.h>
#include <vrs/opengl/glcanvas.h>
#include <vrs/image/image.h>
#include <vrs/image/paletteimage.h>

namespace VRS {

class AnimatedGifEncoder;

class VRS_CORE_API AnimatedGifMaker : public LeafBehavior {
public:
    AnimatedGifMaker(GLCanvas* masterCanvas);
    AnimatedGifMaker(GLCanvas* masterCanvas, const std::string& filename, float frameRate = 5);
    virtual ~AnimatedGifMaker();
    virtual BehaviorNode::InvalidationHint handle(Event* event);

    void open(const std::string& filename, float frameRate = 5);

    void close();

    bool isOpen() const;

        // record options
        void setConstantPalette(ColorPalette* tab = 0);

        void setConstantPalette(int numColors);

        void useDynamicPalette(int numColors = 256);

        void useConstantPalette();

        void setSize(int width, int height);

        void setRepeatCount(int repeat = 0);

        // properties
    GLCanvas* canvas() const;
    const std::string& filename() const;
    float frameRate() const;
    int currentFrameNo() const;
           
    VRS_TYPEINFO(AnimatedGifMaker, BehaviorNode);

private:
    std::string filename_;
    float frameRate_;
    int frameNo_;
    bool open_;

        SO<ColorPalette> constantPal_;
        int constantPalSize_;
        int dynamicPalSize_;
        int width_;
        int height_;

        double lastRecording_;
        double delta_;
        SO<GLCanvas> canvas_;
        SO<Image> tmpImage_;
        SO<Image> tmpImage1_;

        AnimatedGifEncoder* enc_;

};

inline const std::string& AnimatedGifMaker::filename() const { return filename_; }
inline int AnimatedGifMaker::currentFrameNo() const { return frameNo_; }
inline float AnimatedGifMaker::frameRate() const { return frameRate_; }
inline GLCanvas* AnimatedGifMaker::canvas() const { return canvas_; }

} // namespace VRS

#endif // VRS_ANIMATEDGIFMAKER_H_

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