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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _SV_POLYSCAN_HXX
#define _SV_POLYSCAN_HXX
#include <tools/gen.hxx>
// -----------------
// - ScanlinePoint -
// -----------------
struct ScanlinePoint
{
long mnX;
ScanlinePoint* mpNext;
ScanlinePoint() : mnX( 0L ), mpNext( NULL ) {};
ScanlinePoint( long nX, ScanlinePoint* pNext ) : mnX( nX ), mpNext( pNext ) {};
~ScanlinePoint() {};
void Set( long nX, ScanlinePoint* pNext ) { mnX = nX, mpNext = pNext; }
};
// -------------------
// - PolyScanSegment -
// -------------------
struct PolyScanSegment
{
long mnStart;
long mnEnd;
PolyScanSegment() : mnStart( 0L ), mnEnd( 0L ) {};
PolyScanSegment( long nStart, long nEnd ) : mnStart( nStart ), mnEnd( nEnd ) {};
~PolyScanSegment() {};
};
// ----------------
// - PolyScanline -
// ----------------
struct ScanlinePoint;
class Polygon;
class PolyPolygon;
class PolyScanline
{
private:
ScanlinePoint* mpFirst;
ScanlinePoint* mpLast;
ScanlinePoint* mpAct;
long mnLeft;
long mnRight;
void ImplDelete();
public:
PolyScanline();
~PolyScanline();
void Insert( long nX );
void Set( long nStart, long nEnd );
void Set( const PolyScanSegment& rSegment ) { Set( rSegment.mnStart, rSegment.mnEnd ); }
inline BOOL GetFirstX( long& rX );
inline BOOL GetNextX( long& rX );
BOOL GetFirstSegment( PolyScanSegment& rSegment );
BOOL GetNextSegment( PolyScanSegment& rSegment );
};
// ------------------------------------------------------------------------
inline BOOL PolyScanline::GetFirstX( long& rX )
{
mpAct = mpFirst;
return( mpAct ? ( rX = mpAct->mnX, mpAct = mpAct->mpNext, TRUE ) : FALSE );
}
// ------------------------------------------------------------------------
inline BOOL PolyScanline::GetNextX( long& rX )
{
return( mpAct ? ( rX = mpAct->mnX, mpAct = mpAct->mpNext, TRUE ) : FALSE );
}
// ---------------
// - PolyScanner -
// ---------------
class PolyScanner
{
private:
PolyScanline* mpArray;
long mnLeft;
long mnTop;
long mnRight;
long mnBottom;
PolyScanner() {};
protected:
void InsertLine( const Point& rStart, const Point& rEnd );
public:
PolyScanner( const Rectangle& rRect );
PolyScanner( const Polygon& rPoly );
PolyScanner( const PolyPolygon& rPolyPoly );
~PolyScanner();
long Left() const { return mnLeft; }
long Top() const { return mnTop; }
long Right() const { return mnRight; }
long Bottom() const { return mnBottom; }
long Width() const { return( mnRight - mnLeft + 1L ); }
long Height() const { return( mnBottom - mnTop + 1L ); }
Rectangle GetBoundRect() const { return Rectangle( mnLeft, mnTop, mnRight, mnBottom ); }
ULONG Count() const { return Height(); }
PolyScanline* operator[]( ULONG nPos ) const;
};
#endif // _SV_POLYSCAN_HXX
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