AOO410/main/basegfx/inc/basegfx/range/b2drange.hxx

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 * to you under the Apache License, Version 2.0 (the
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#ifndef _BGFX_RANGE_B2DRANGE_HXX
#define _BGFX_RANGE_B2DRANGE_HXX

#include <basegfx/vector/b2dvector.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/tuple/b2dtuple.hxx>
#include <basegfx/range/basicrange.hxx>
#include <vector>


namespace basegfx
{
	// predeclarations
	class B2IRange;
	class B2DHomMatrix;

	class B2DRange
	{
	public:		
        typedef double 			ValueType;
        typedef DoubleTraits 	TraitsType;

		B2DRange() 
		{
		}
		
		explicit B2DRange(const B2DTuple& rTuple)
		:	maRangeX(rTuple.getX()),
			maRangeY(rTuple.getY())
		{
		}
		
		B2DRange(double x1,
                 double y1,
                 double x2,
                 double y2)
		:	maRangeX(x1),
			maRangeY(y1)
		{
			maRangeX.expand(x2);
			maRangeY.expand(y2);
		}

		B2DRange(const B2DTuple& rTuple1,
                 const B2DTuple& rTuple2)
		:	maRangeX(rTuple1.getX()),
			maRangeY(rTuple1.getY())
		{
            expand( rTuple2 );
		}
		
		B2DRange(const B2DRange& rRange)
		:	maRangeX(rRange.maRangeX),
			maRangeY(rRange.maRangeY)
		{
		}

		explicit B2DRange(const B2IRange& rRange);

		bool isEmpty() const 
		{
			return (
				maRangeX.isEmpty() 
				|| maRangeY.isEmpty()
				);
		}

		void reset() 
		{ 
			maRangeX.reset(); 
			maRangeY.reset(); 
		}

		bool operator==( const B2DRange& rRange ) const 
		{ 
			return (maRangeX == rRange.maRangeX 
				&& maRangeY == rRange.maRangeY); 
		}

		bool operator!=( const B2DRange& rRange ) const 
		{ 
			return (maRangeX != rRange.maRangeX 
				|| maRangeY != rRange.maRangeY); 
		}

		B2DRange& operator=(const B2DRange& rRange) 
		{ 
			maRangeX = rRange.maRangeX; 
			maRangeY = rRange.maRangeY; 
			return *this; 
		}

		bool equal(const B2DRange& rRange) const
        {
			return (maRangeX.equal(rRange.maRangeX) 
                    && maRangeY.equal(rRange.maRangeY)); 
        }

        double getMinX() const
        {
            return maRangeX.getMinimum();
        }

        double getMinY() const
        {
            return maRangeY.getMinimum();
        }

        double getMaxX() const
        {
            return maRangeX.getMaximum();
        }

        double getMaxY() const
        {
            return maRangeY.getMaximum();
        }

        double getWidth() const
        {
            return maRangeX.getRange();
        }

        double getHeight() const
        {
            return maRangeY.getRange();
        }

		B2DPoint getMinimum() const
		{
			return B2DPoint(
				maRangeX.getMinimum(),
				maRangeY.getMinimum()
				);
		}
		
		B2DPoint getMaximum() const
		{
			return B2DPoint(
				maRangeX.getMaximum(),
				maRangeY.getMaximum()
				);
		}

		B2DVector getRange() const
		{
			return B2DVector(
				maRangeX.getRange(),
				maRangeY.getRange()
				);
		}
	
		B2DPoint getCenter() const
		{
			return B2DPoint(
				maRangeX.getCenter(),
				maRangeY.getCenter()
				);
		}
	
		double getCenterX() const
		{
			return maRangeX.getCenter();
		}
	
		double getCenterY() const
		{
			return maRangeY.getCenter();
		}
	
		bool isInside(const B2DTuple& rTuple) const
		{
			return (
				maRangeX.isInside(rTuple.getX()) 
				&& maRangeY.isInside(rTuple.getY())
				);
		}

		bool isInside(const B2DRange& rRange) const
		{
			return (
				maRangeX.isInside(rRange.maRangeX) 
				&& maRangeY.isInside(rRange.maRangeY)
				);
		}

		bool overlaps(const B2DRange& rRange) const
		{
			return (
				maRangeX.overlaps(rRange.maRangeX) 
				&& maRangeY.overlaps(rRange.maRangeY)
				);
		}

		bool overlapsMore(const B2DRange& rRange) const
		{
			return (
				maRangeX.overlapsMore(rRange.maRangeX) 
				&& maRangeY.overlapsMore(rRange.maRangeY)
				);
		}

		void expand(const B2DTuple& rTuple)
		{
			maRangeX.expand(rTuple.getX());
			maRangeY.expand(rTuple.getY());
		}

		void expand(const B2DRange& rRange)
		{
			maRangeX.expand(rRange.maRangeX); 
			maRangeY.expand(rRange.maRangeY); 
		}

		void intersect(const B2DRange& rRange)
		{
			maRangeX.intersect(rRange.maRangeX); 
			maRangeY.intersect(rRange.maRangeY); 
		}

		void grow(double fValue)
		{
			maRangeX.grow(fValue); 
			maRangeY.grow(fValue); 
		}

		void transform(const B2DHomMatrix& rMatrix);

	private:
        typedef ::basegfx::BasicRange< ValueType, TraitsType >	MyBasicRange;

		MyBasicRange		maRangeX;
		MyBasicRange		maRangeY;
	};

	/** Round double to nearest integer for 2D range

		@return the nearest integer for this range
	*/
	B2IRange fround(const B2DRange& rRange);

    /** Compute the set difference of the two given ranges

    	This method calculates the symmetric difference (aka XOR)
    	between the two given ranges, and returning the resulting
    	ranges. Thus, the result will contain all areas where one, but
    	not both ranges lie.

    	@param o_rResult
        Result vector. The up to four difference ranges are returned
        within this vector

        @param rFirst
        The first range

        @param rSecond
        The second range

        @return the input vector
     */
    ::std::vector< B2DRange >& computeSetDifference( ::std::vector< B2DRange >&	o_rResult,
                                                     const B2DRange&			rFirst,
                                                     const B2DRange&			rSecond );

} // end of namespace basegfx


#endif /* _BGFX_RANGE_B2DRANGE_HXX */