1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski 24*b1cdbd2cSJim Jagielski #ifndef _CHART2_CLIPPING_HXX 25*b1cdbd2cSJim Jagielski #define _CHART2_CLIPPING_HXX 26*b1cdbd2cSJim Jagielski 27*b1cdbd2cSJim Jagielski #include <basegfx/range/b2drectangle.hxx> 28*b1cdbd2cSJim Jagielski #include <com/sun/star/drawing/PolyPolygonShape3D.hpp> 29*b1cdbd2cSJim Jagielski 30*b1cdbd2cSJim Jagielski //............................................................................. 31*b1cdbd2cSJim Jagielski namespace chart 32*b1cdbd2cSJim Jagielski { 33*b1cdbd2cSJim Jagielski //............................................................................. 34*b1cdbd2cSJim Jagielski 35*b1cdbd2cSJim Jagielski //----------------------------------------------------------------------------- 36*b1cdbd2cSJim Jagielski /** 37*b1cdbd2cSJim Jagielski */ 38*b1cdbd2cSJim Jagielski 39*b1cdbd2cSJim Jagielski class Clipping 40*b1cdbd2cSJim Jagielski { 41*b1cdbd2cSJim Jagielski /** This class uses the Liang-Biarsky parametric line-clipping algorithm as described in: 42*b1cdbd2cSJim Jagielski Computer Graphics: principles and practice, 2nd ed., 43*b1cdbd2cSJim Jagielski James D. Foley et al., 44*b1cdbd2cSJim Jagielski Section 3.12.4 on page 117. 45*b1cdbd2cSJim Jagielski */ 46*b1cdbd2cSJim Jagielski 47*b1cdbd2cSJim Jagielski public: 48*b1cdbd2cSJim Jagielski /** @descr The intersection between an open polygon and a rectangle is 49*b1cdbd2cSJim Jagielski calculated and the resulting lines are placed into the poly-polygon aResult. 50*b1cdbd2cSJim Jagielski @param rPolygon The polygon is required to be open, ie. it's start and end point 51*b1cdbd2cSJim Jagielski have different coordinates and that it is continuous, ie. has no holes. 52*b1cdbd2cSJim Jagielski @param rRectangle The clipping area. 53*b1cdbd2cSJim Jagielski @param aResult The resulting lines that are the parts of the given polygon lying inside 54*b1cdbd2cSJim Jagielski the clipping area are stored into aResult whose prior content is deleted first. 55*b1cdbd2cSJim Jagielski */ 56*b1cdbd2cSJim Jagielski static void clipPolygonAtRectangle( 57*b1cdbd2cSJim Jagielski const ::com::sun::star::drawing::PolyPolygonShape3D& rPolygon 58*b1cdbd2cSJim Jagielski , const ::basegfx::B2DRectangle& rRectangle 59*b1cdbd2cSJim Jagielski , ::com::sun::star::drawing::PolyPolygonShape3D& aResult 60*b1cdbd2cSJim Jagielski , bool bSplitPiecesToDifferentPolygons = true ); 61*b1cdbd2cSJim Jagielski }; 62*b1cdbd2cSJim Jagielski 63*b1cdbd2cSJim Jagielski //............................................................................. 64*b1cdbd2cSJim Jagielski } //namespace chart 65*b1cdbd2cSJim Jagielski //............................................................................. 66*b1cdbd2cSJim Jagielski #endif 67