1*de7b3f82SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*de7b3f82SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*de7b3f82SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*de7b3f82SAndrew Rist * distributed with this work for additional information 6*de7b3f82SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*de7b3f82SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*de7b3f82SAndrew Rist * "License"); you may not use this file except in compliance 9*de7b3f82SAndrew Rist * with the License. You may obtain a copy of the License at 10*de7b3f82SAndrew Rist * 11*de7b3f82SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*de7b3f82SAndrew Rist * 13*de7b3f82SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*de7b3f82SAndrew Rist * software distributed under the License is distributed on an 15*de7b3f82SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*de7b3f82SAndrew Rist * KIND, either express or implied. See the License for the 17*de7b3f82SAndrew Rist * specific language governing permissions and limitations 18*de7b3f82SAndrew Rist * under the License. 19*de7b3f82SAndrew Rist * 20*de7b3f82SAndrew Rist *************************************************************/ 21*de7b3f82SAndrew Rist 22*de7b3f82SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir #ifndef _CHART2_CLIPPING_HXX 25cdf0e10cSrcweir #define _CHART2_CLIPPING_HXX 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <basegfx/range/b2drectangle.hxx> 28cdf0e10cSrcweir #include <com/sun/star/drawing/PolyPolygonShape3D.hpp> 29cdf0e10cSrcweir 30cdf0e10cSrcweir //............................................................................. 31cdf0e10cSrcweir namespace chart 32cdf0e10cSrcweir { 33cdf0e10cSrcweir //............................................................................. 34cdf0e10cSrcweir 35cdf0e10cSrcweir //----------------------------------------------------------------------------- 36cdf0e10cSrcweir /** 37cdf0e10cSrcweir */ 38cdf0e10cSrcweir 39cdf0e10cSrcweir class Clipping 40cdf0e10cSrcweir { 41cdf0e10cSrcweir /** This class uses the Liang-Biarsky parametric line-clipping algorithm as described in: 42cdf0e10cSrcweir Computer Graphics: principles and practice, 2nd ed., 43cdf0e10cSrcweir James D. Foley et al., 44cdf0e10cSrcweir Section 3.12.4 on page 117. 45cdf0e10cSrcweir */ 46cdf0e10cSrcweir 47cdf0e10cSrcweir public: 48cdf0e10cSrcweir /** @descr The intersection between an open polygon and a rectangle is 49cdf0e10cSrcweir calculated and the resulting lines are placed into the poly-polygon aResult. 50cdf0e10cSrcweir @param rPolygon The polygon is required to be open, ie. it's start and end point 51cdf0e10cSrcweir have different coordinates and that it is continuous, ie. has no holes. 52cdf0e10cSrcweir @param rRectangle The clipping area. 53cdf0e10cSrcweir @param aResult The resulting lines that are the parts of the given polygon lying inside 54cdf0e10cSrcweir the clipping area are stored into aResult whose prior content is deleted first. 55cdf0e10cSrcweir */ 56cdf0e10cSrcweir static void clipPolygonAtRectangle( 57cdf0e10cSrcweir const ::com::sun::star::drawing::PolyPolygonShape3D& rPolygon 58cdf0e10cSrcweir , const ::basegfx::B2DRectangle& rRectangle 59cdf0e10cSrcweir , ::com::sun::star::drawing::PolyPolygonShape3D& aResult 60cdf0e10cSrcweir , bool bSplitPiecesToDifferentPolygons = true ); 61cdf0e10cSrcweir }; 62cdf0e10cSrcweir 63cdf0e10cSrcweir //............................................................................. 64cdf0e10cSrcweir } //namespace chart 65cdf0e10cSrcweir //............................................................................. 66cdf0e10cSrcweir #endif 67