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Diffstat (limited to 'basegfx/inc')
| -rw-r--r-- | basegfx/inc/basegfx/polygon/b2dpolygonclipper.hxx | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/basegfx/inc/basegfx/polygon/b2dpolygonclipper.hxx b/basegfx/inc/basegfx/polygon/b2dpolygonclipper.hxx new file mode 100644 index 000000000000..57a92c19b59e --- /dev/null +++ b/basegfx/inc/basegfx/polygon/b2dpolygonclipper.hxx @@ -0,0 +1,102 @@ +/************************************************************************* + * + * 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 */ |