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Diffstat (limited to 'chart2/source/view/inc/Clipping.hxx')
-rw-r--r-- | chart2/source/view/inc/Clipping.hxx | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/chart2/source/view/inc/Clipping.hxx b/chart2/source/view/inc/Clipping.hxx new file mode 100644 index 000000000000..d04a576737bf --- /dev/null +++ b/chart2/source/view/inc/Clipping.hxx @@ -0,0 +1,70 @@ +/************************************************************************* + * + * 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 _CHART2_CLIPPING_HXX +#define _CHART2_CLIPPING_HXX + +#include <basegfx/range/b2drectangle.hxx> +#include <com/sun/star/drawing/PolyPolygonShape3D.hpp> + +//............................................................................. +namespace chart +{ +//............................................................................. + +//----------------------------------------------------------------------------- +/** +*/ + +class Clipping +{ + /** This class uses the Liang-Biarsky parametric line-clipping algorithm as described in: + Computer Graphics: principles and practice, 2nd ed., + James D. Foley et al., + Section 3.12.4 on page 117. + */ + +public: + /** @descr The intersection between an open polygon and a rectangle is + calculated and the resulting lines are placed into the poly-polygon aResult. + @param rPolygon The polygon is required to be open, ie. it's start and end point + have different coordinates and that it is continuous, ie. has no holes. + @param rRectangle The clipping area. + @param aResult The resulting lines that are the parts of the given polygon lying inside + the clipping area are stored into aResult whose prior content is deleted first. + */ + static void clipPolygonAtRectangle( + const ::com::sun::star::drawing::PolyPolygonShape3D& rPolygon + , const ::basegfx::B2DRectangle& rRectangle + , ::com::sun::star::drawing::PolyPolygonShape3D& aResult + , bool bSplitPiecesToDifferentPolygons = true ); +}; + +//............................................................................. +} //namespace chart +//............................................................................. +#endif |