VRS - The Virtual Rendering System

version 3.3

overlayimagegl.h

Go to the documentation of this file.

#ifndef VRS_SG_OVERLAYIMAGEGL_H
#define VRS_SG_OVERLAYIMAGEGL_H

#include <vrs/config.h>
#include <vrs/text/deprecated/text.h>
#include <vrs/sg/scenething.h>

namespace VRS
{

    class ColorLinearEffect;
    class ColorAttribute;
    class Image;
    class PolygonSet;
    class SceneThing;
    class Text;


        class VRS_CORE_API OverlayImageGL : public SceneThing {
        public:
                OverlayImageGL();
                OverlayImageGL(SO<SceneThing> parentThing);
                virtual ~OverlayImageGL();
                int addImage(SO<Image> overlayImage, const Vector& minPosition, const Vector& maxPosition, bool showHide= true);

#if 0
        // SMA: This created a circular dependency between vrs_opengl and the new vrs_text library
        //      Use screenoverlay as in the glutnewtext example for this functionality
                int addText(
            SO<Font> font, 
            const std::string& text, 
            const Vector& minPosition = Vector(0,0,0), 
            const Vector& maxPosition= Vector(0,0,0),
                        Text::AlignmentH alignmentH=Text::LEFT, 
            Text::AlignmentV alignmentV=Text::BOTTOM,
            const Color& textColor = Color(0,0,0,1));
#endif
                bool removeOverlayItem(int i);
                int getSize() const;
                SO<Image> getImageAt(int i) const;

#if 0
        // SMA: This created a circular dependency between vrs_opengl and vrs_text
                SO<Text> getTextAt(int i) const;
#endif

                Vector getMinPosition(int i) const;
                Vector getMaxPosition(int i) const;
                
                SO<ColorAttribute> getColorAttribute(int i) const;
                bool hideOverlayItem(int i);
                bool showOverlayItem(int i);
                                
                VRS_TYPEINFO(OverlayImageGL, SceneThing);
                VRS_SERIALIZABLE(OverlayImageGL);
        private:
                
                SO<Dictionary<int,SO<SceneThing> > > overlayItems_; //because images are applied to shapes via textures and both texture and shape need to be inserted into the scenegraph
                SO<Dictionary<int,Vector> > minPositions_; // saves the minPosition of each overlay item
                SO<Dictionary<int,Vector> > maxPositions_; // saves the maxPosition of each overlay item
                SO<Dictionary<int,SO<ColorAttribute> > > colorAttrs_; // saves the ColorAttribute of each overlay item.These can be used to change color and alpha value of each item
                int addItem(SO<SceneThing> overlayItem, const Vector& minPosition, const Vector& maxPosition, SO<ColorAttribute> color);
                SO<SharedObj> getItem(int i,const ID& itemType) const;
                void init();
                int nextId;
                
        };
}

#endif

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