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/* -*- 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 .
*/
#pragma once
#include <basegfx/range/b2drectangle.hxx>
namespace com::sun::star::drawing { struct PolyPolygonShape3D; }
namespace com::sun::star::drawing { struct Position3D; }
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. 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.
*/
static void clipPolygonAtRectangle(
const css::drawing::PolyPolygonShape3D& rPolygon
, const ::basegfx::B2DRectangle& rRectangle
, css::drawing::PolyPolygonShape3D& aResult
, bool bSplitPiecesToDifferentPolygons = true );
static void 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 );
};
} //namespace chart
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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