AOO410/main/basegfx/inc/basegfx/point/b2ipoint.hxx

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#ifndef _BGFX_POINT_B2IPOINT_HXX
#define _BGFX_POINT_B2IPOINT_HXX

#include <basegfx/tuple/b2ituple.hxx>

namespace basegfx
{
	// predeclaration
	class B2DHomMatrix;

	/** Base Point class with two sal_Int32 values

		This class derives all operators and common handling for
		a 2D data class from B2ITuple. All necessary extensions
		which are special for points will be added here.

		@see B2ITuple
	*/
	class B2IPoint : public ::basegfx::B2ITuple
	{
	public:					
		/**	Create a 2D Point

        	The point is initialized to (0, 0)
		*/
		B2IPoint() 
		:	B2ITuple()
		{}

		/**	Create a 2D Point

			@param nX
			This parameter is used to initialize the X-coordinate
			of the 2D Point.
			
			@param nY
			This parameter is used to initialize the Y-coordinate
			of the 2D Point.
		*/
		B2IPoint(sal_Int32 nX, sal_Int32 nY) 
		:	B2ITuple(nX, nY)
		{}

		/**	Create a copy of a 2D Point

			@param rPoint
			The 2D Point which will be copied.
		*/
		B2IPoint(const B2IPoint& rPoint) 
		:	B2ITuple(rPoint)
		{}

		/** constructor with tuple to allow copy-constructing
			from B2ITuple-based classes
		*/
		B2IPoint(const ::basegfx::B2ITuple& rTuple) 
		:	B2ITuple(rTuple)
		{}

		~B2IPoint() 
		{}

		/** *=operator to allow usage from B2IPoint, too
		*/
		B2IPoint& operator*=( const B2IPoint& rPnt ) 
		{ 
			mnX *= rPnt.mnX;
			mnY *= rPnt.mnY; 
			return *this; 
		}

		/** *=operator to allow usage from B2IPoint, too
		*/
		B2IPoint& operator*=(sal_Int32 t) 
		{ 
			mnX *= t; 
			mnY *= t; 
			return *this; 
		}

		/** assignment operator to allow assigning the results
			of B2ITuple calculations
		*/
		B2IPoint& operator=( const ::basegfx::B2ITuple& rPoint );

		/** Transform point by given transformation matrix.

        	The translational components of the matrix are, in
        	contrast to B2DVector, applied.
		*/
		B2IPoint& operator*=( const ::basegfx::B2DHomMatrix& rMat );

		static const B2IPoint& getEmptyPoint()
		{
			return (const B2IPoint&) ::basegfx::B2ITuple::getEmptyTuple();
		}
	};
} // end of namespace basegfx

#endif /* _BGFX_POINT_B2IPOINT_HXX */