54 lines
2 KiB
C++
54 lines
2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_BASEGFX_POLYGON_B2DPOLYPOLYGONFILLRULE_HXX
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#define INCLUDED_BASEGFX_POLYGON_B2DPOLYPOLYGONFILLRULE_HXX
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#include <sal/types.h>
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//////////////////////////////////////////////////////////////////////////////
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namespace basegfx
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{
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/** Fill rule to use for poly-polygon filling.
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The fill rule determines which areas are inside, and which are
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outside the poly-polygon.
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*/
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enum FillRule
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{
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/** Areas, for which a scanline has crossed an odd number of
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vertices, are regarded 'inside', the remainder 'outside'
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of the poly-polygon.
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*/
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FillRule_EVEN_ODD,
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/** For each edge a scanline crosses, a current winding number
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is updated. Downward edges count +1, upward edges count
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-1. If the total accumulated winding number for one area
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is not zero, this area is regarded 'inside', otherwise,
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'outside'.
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*/
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FillRule_NONZERO_WINDING_NUMBER
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};
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}
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#endif // INCLUDED_BASEGFX_POLYGON_B2DPOLYPOLYGONFILLRULE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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