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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: b2dpolygonclipper.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: kz $ $Date: 2005-11-02 13:53:12 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef _BGFX_POLYPOLYGON_B2DPOLYGONCLIPPER_HXX
#define _BGFX_POLYPOLYGON_B2DPOLYGONCLIPPER_HXX
#ifndef _BGFX_POLYGON_B2DPOLYPOLYGON_HXX
#include <basegfx/polygon/b2dpolypolygon.hxx>
#endif
#ifndef _BGFX_POLYGON_B2DPOLYGON_HXX
#include <basegfx/polygon/b2dpolygon.hxx>
#endif
//////////////////////////////////////////////////////////////////////////////
namespace basegfx
{
// predefinitions
class B2DRange;
namespace tools
{
// This method clips the given PolyPolygon against a horizontal or vertical axis (parallell to X or Y axis). The axis is
// defined by bParallelToXAxis (true -> it's parallel to the X-Axis of the coordinate system, else to the Y-Axis) and the
// fValueOnOtherAxis (gives the translation to the coordinate system axis). For example, when You want to define
// a clip axis parallel to X.Axis and 100 above it, use bParallelToXAxis = true and fValueOnOtherAxis = 100.
// The value bAboveAxis defines on which side the return value will be (true -> above X, right of Y).
// The switch bStroke decides if the polygon is interpreted as area (false) or strokes (true).
B2DPolyPolygon clipPolyPolygonOnParallelAxis(const B2DPolyPolygon& rCandidate, bool bParallelToXAxis, bool bAboveAxis, double fValueOnOtherAxis, bool bStroke);
// version for Polygons
B2DPolyPolygon clipPolygonOnParallelAxis(const B2DPolygon& rCandidate, bool bParallelToXAxis, bool bAboveAxis, double fValueOnOtherAxis, bool bStroke);
// Clip the given PolyPolygon against the given range. bInside defines if the result will contain the
// parts which are contained in the range or vice versa.
// The switch bStroke decides if the polygon is interpreted as area (false) or strokes (true).
B2DPolyPolygon clipPolyPolygonOnRange(const B2DPolyPolygon& rCandidate, const B2DRange& rRange, bool bInside, bool bStroke);
// version for Polygons
B2DPolyPolygon clipPolygonOnRange(const B2DPolygon& rCandidate, const B2DRange& rRange, bool bInside, bool bStroke);
// Clip given PolyPolygon against the endless edge defined by the given two points. bAbove defines on which side
// of the edge the result will be together with the definition of the edge. If the edge is seen as a vector
// from A to B and bAbove is true, the result will contain the geometry left of the vector.
// The switch bStroke decides if the polygon is interpreted as area (false) or strokes (true).
B2DPolyPolygon clipPolyPolygonOnEdge(const B2DPolyPolygon& rCandidate, const B2DPoint& rPointA, const B2DPoint& rPointB, bool bAbove, bool bStroke);
// version for Polygons
B2DPolyPolygon clipPolygonOnEdge(const B2DPolygon& rCandidate, const B2DPoint& rPointA, const B2DPoint& rPointB, bool bAbove, bool bStroke);
// Clip given PolyPolygon against given clipping polygon.
// The switch bStroke decides if the polygon is interpreted as area (false) or strokes (true).
// With stroke polygons, You get all ine snippets inside rCip. For convenience, You may use bInvert to get everything outside rClip.
// With filled polygons, You get all PolyPolygon parts which were inside rClip. Those polygons are in no way reduced, so
// it may be necessary to clean them up using their overlapping information.
B2DPolyPolygon clipPolyPolygonOnPolyPolygon(const B2DPolyPolygon& rCandidate, const B2DPolyPolygon& rClip, bool bStroke, bool bInvert = false);
// version for Polygons
B2DPolyPolygon clipPolygonOnPolyPolygon(const B2DPolygon& rCandidate, const B2DPolyPolygon& rClip, bool bStroke, bool bInvert = false);
// clip the given polygon against the given range. the resulting polygon will always contain
// the inside parts which will always be interpreted as areas. the incoming polygon is expected
// to be a simple triangle list. the result is also a simple triangle list.
B2DPolygon clipTriangleListOnRange( const B2DPolygon& rCandidate, const B2DRange& rRange );
} // end of namespace tools
} // end of namespace basegfx
#endif /* _BGFX_POLYPOLYGON_B2DPOLYGONCLIPPER_HXX */
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