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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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 * 
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#ifndef _BGFX_POLYGON_B3DPOLYGON_HXX
#define _BGFX_POLYGON_B3DPOLYGON_HXX

#include <sal/types.h>
#include <o3tl/cow_wrapper.hxx>

//////////////////////////////////////////////////////////////////////////////
// predeclarations
class ImplB3DPolygon;

namespace basegfx
{
	class B3DPolygon;
	class B3DPoint;
	class B3DHomMatrix;
	class B3DVector;
	class B2DPoint;
	class B2DHomMatrix;
	class BColor;
} // end of namespace basegfx

//////////////////////////////////////////////////////////////////////////////

namespace basegfx
{
	class B3DPolygon
	{
    public:
        typedef o3tl::cow_wrapper< ImplB3DPolygon > ImplType;

	private:
		// internal data.
        ImplType                                    mpPolygon;

	public:
		B3DPolygon();
		B3DPolygon(const B3DPolygon& rPolygon);
		B3DPolygon(const B3DPolygon& rPolygon, sal_uInt32 nIndex, sal_uInt32 nCount);
		~B3DPolygon();

		// assignment operator
		B3DPolygon& operator=(const B3DPolygon& rPolygon);

        /// unshare this polygon with all internally shared instances
        void makeUnique();

		// compare operators
		bool operator==(const B3DPolygon& rPolygon) const;
		bool operator!=(const B3DPolygon& rPolygon) const;

		// member count
		sal_uInt32 count() const;

		// Coordinate interface
		B3DPoint getB3DPoint(sal_uInt32 nIndex) const;
		void setB3DPoint(sal_uInt32 nIndex, const B3DPoint& rValue);

		// Coordinate insert/append
		void insert(sal_uInt32 nIndex, const B3DPoint& rPoint, sal_uInt32 nCount = 1);
		void append(const B3DPoint& rPoint, sal_uInt32 nCount = 1);

		// BColor interface
		BColor getBColor(sal_uInt32 nIndex) const;
		void setBColor(sal_uInt32 nIndex, const BColor& rValue);
		bool areBColorsUsed() const;
		void clearBColors();

		// Normals interface
		B3DVector getNormal() const; // plane normal
		B3DVector getNormal(sal_uInt32 nIndex) const; // normal in each point
		void setNormal(sal_uInt32 nIndex, const B3DVector& rValue);
		void transformNormals(const B3DHomMatrix& rMatrix);
		bool areNormalsUsed() const;
		void clearNormals();

		// TextureCoordinate interface
		B2DPoint getTextureCoordinate(sal_uInt32 nIndex) const;
		void setTextureCoordinate(sal_uInt32 nIndex, const B2DPoint& rValue);
		void transformTextureCoordiantes(const B2DHomMatrix& rMatrix);
		bool areTextureCoordinatesUsed() const;
		void clearTextureCoordinates();

		// insert/append other 2D polygons
		void insert(sal_uInt32 nIndex, const B3DPolygon& rPoly, sal_uInt32 nIndex2 = 0, sal_uInt32 nCount = 0);
		void append(const B3DPolygon& rPoly, sal_uInt32 nIndex = 0, sal_uInt32 nCount = 0);

		// remove
		void remove(sal_uInt32 nIndex, sal_uInt32 nCount = 1);

		// clear all points
		void clear();

		// closed state
		bool isClosed() const;
		void setClosed(bool bNew);

		// flip polygon direction
		void flip();

		// test if Polygon has double points
		bool hasDoublePoints() const;

		// remove double points, at the begin/end and follow-ups, too
		void removeDoublePoints();

		// apply transformation given in matrix form to the polygon
		void transform(const B3DHomMatrix& rMatrix);
	};
} // end of namespace basegfx

//////////////////////////////////////////////////////////////////////////////


#endif /* _BGFX_POLYGON_B3DPOLYGON_HXX */