haiku/headers/os/interface/Polygon.h

/*
 * Copyright 2001-2007, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Marc Flerackers, mflerackers@androme.be
 */
#ifndef _POLYGON_H
#define _POLYGON_H


#include <BeBuild.h>
#include <InterfaceDefs.h>
#include <Rect.h>

namespace BPrivate { class BAffineTransform; }
using namespace BPrivate;

class BPolygon {
	public:
							BPolygon(const BPoint *ptArray, int32 numPoints);
							BPolygon(const BPolygon *polygon);
							BPolygon();
		virtual				~BPolygon();

				BPolygon 	&operator=(const BPolygon &from);

				BRect		Frame() const;
				void		AddPoints(const BPoint *ptArray, int32 numPoints);
				int32		CountPoints() const;
				void		MapTo(BRect srcRect, BRect dstRect);
				void		PrintToStream() const;

				void		Transform(const BAffineTransform& transform);
				BPolygon&	TransformBySelf(const BAffineTransform& transform);
				BPolygon*	TransformByCopy(const BAffineTransform& transform) const;

	private:
		friend class BView;

		void _ComputeBounds();
		void _MapPoint(BPoint *point, BRect srcRect, BRect dstRect);
		void _MapRectangle(BRect *rect, BRect srcRect, BRect dstRect);

	private:
		BRect	fBounds;
		uint32	fCount;
		BPoint	*fPoints;
};

#endif // _POLYGON_H_