/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
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. its 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.
*/ staticvoid clipPolygonAtRectangle( const css::drawing::PolyPolygonShape3D& rPolygon
, const ::basegfx::B2DRectangle& rRectangle
, css::drawing::PolyPolygonShape3D& aResult
, bool bSplitPiecesToDifferentPolygons = true ); staticvoid clipPolygonAtRectangle( const std::vector<std::vector<css::drawing::Position3D>>& rPolygon
, const ::basegfx::B2DRectangle& rRectangle
, std::vector<std::vector<css::drawing::Position3D>>& aResult
, bool bSplitPiecesToDifferentPolygons = true );
};
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