MyGUI_PolygonalSkin.h

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/*
 * This source file is part of MyGUI. For the latest info, see http://mygui.info/
 * Distributed under the MIT License
 * (See accompanying file COPYING.MIT or copy at http://opensource.org/licenses/MIT)
 */

#ifndef __MYGUI_POLYGONAL_SKIN_H__
#define __MYGUI_POLYGONAL_SKIN_H__

#include "MyGUI_Prerequest.h"
#include "MyGUI_Types.h"
#include "MyGUI_ISubWidgetRect.h"
#include "MyGUI_RenderFormat.h"

namespace MyGUI
{

    class MYGUI_EXPORT PolygonalSkin :
        public ISubWidgetRect
    {
        MYGUI_RTTI_DERIVED( PolygonalSkin )

    public:
        PolygonalSkin();
        virtual ~PolygonalSkin();

        void setPoints(const std::vector<FloatPoint>& _points);

        void setWidth(float _width);

        void setStroke(size_t _value);

        virtual void setAlpha(float _alpha);

        virtual void setVisible(bool _visible);

        virtual void setStateData(IStateInfo* _data);

        virtual void createDrawItem(ITexture* _texture, ILayerNode* _node);
        virtual void destroyDrawItem();

        // метод для отрисовки себя
        virtual void doRender();

        /*internal:*/
        virtual void _updateView();
        virtual void _correctView();

        virtual void _setAlign(const IntSize& _oldsize);

        virtual void _setUVSet(const FloatRect& _rect);
        virtual void _setColour(const Colour& _value);

    protected:
        void _rebuildGeometry();
        FloatPoint _getPerpendicular(const FloatPoint& _point1, const FloatPoint& _point2);
        // line from center of p1-p2 line to p3
        FloatPoint _getMiddleLine(const FloatPoint& _point1, const FloatPoint& _point2, const FloatPoint& _point3);

    private:
        bool mGeometryOutdated;

        float mLineWidth;
        size_t mLineStroke;
        std::vector<FloatPoint> mLinePoints;
        float mLineLength;

        std::vector<FloatPoint> mResultVerticiesPos;
        std::vector<FloatPoint> mResultVerticiesUV;

        size_t mVertexCount;

        bool mEmptyView;

        VertexColourType mVertexFormat;
        uint32 mCurrentColour;

        FloatRect mCurrentTexture;
        IntCoord mCurrentCoord;

        ILayerNode* mNode;
        RenderItem* mRenderItem;
    };

} // namespace MyGUI

#endif // __MYGUI_POLYGONAL_SKIN_H__