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#include "pch.h"
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#include "clipper.h"
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#include "clipperhandler.h"
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namespace NClipperLib
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{
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const double ZERO10 = 1e-10;
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CClipperHandler::CClipperHandler(void)
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: m_nPrec(8)
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, m_pSubject(0)
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, m_pClip(0)
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//, m_dXOffset(0)
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//, m_dYOffset(0)
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{
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}
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CClipperHandler::CClipperHandler(unsigned int nPrec)
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: m_nPrec(nPrec)
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, m_pSubject(0)
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, m_pClip(0)
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{
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}
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CClipperHandler::~CClipperHandler(void)
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{
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}
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/** @brief <20><><EFBFBD>þ<EFBFBD><C3BE>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ */
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void CClipperHandler::SetPrecison(unsigned int nPrec)
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{
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m_nPrec = nPrec;
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}
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//inline long64 Round(double val)
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//{
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// if ((val < 0)) return (long64)(val - 0.5); else return (long64)(val + 0.5);
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//}
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//bool CClipperHandler::LoadFromFile(Polygons *pp, char * filename, double scale,
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// int xOffset , int yOffset )
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//{
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// if(0 == pp)
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// return false;
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//
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// Polygons& ppg = *pp;
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// ppg.clear();
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//
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// FILE *f = fopen(filename, "r");
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// if (!f) return false;
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// int polyCnt, vertCnt;
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// char junk [80];
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// double X, Y;
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// if (fscanf(f, "%d", &polyCnt) == 1 && polyCnt > 0)
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// {
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// ppg.resize(polyCnt);
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// for (int i = 0; i < polyCnt; i++) {
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// if (fscanf(f, "%d", &vertCnt) != 1 || vertCnt <= 0) break;
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// ppg[i].resize(vertCnt);
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// for (int j = 0; j < vertCnt; j++) {
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// if (fscanf(f, "%lf%*[, ]%lf", &X, &Y) != 2) break;
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// //<2F><><EFBFBD><EFBFBD> ww
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// ppg[i][j].X = Round((X + xOffset) * scale);
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// ppg[i][j].Y = Round((Y + yOffset) * scale);
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// fgets(junk, 80, f);
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// }
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// }
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// }
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// m_dScale = scale;
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// m_dXOffset = xOffset;
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// m_dYOffset = yOffset;
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//
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//
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// fclose(f);
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// return true;
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//}
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// <20><><EFBFBD>ڴ<EFBFBD><DAB4>ж<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,DOUBLEVEC <20>д<EFBFBD><D0B4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ε<EFBFBD><CEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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//bool CClipperHandler::LoadFromMemory(Polygons *pp,const vector< DOUBLEVEC >& polyData, double scale,
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// int xOffset , int yOffset )
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//{
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// if(0 == pp)
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// return false;
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//
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// Polygons& ppg = *pp;
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// ppg.clear();
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// double X, Y;
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// int polyCnt = polyData.size();
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// int vertCnt;
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// ppg.resize(polyCnt);
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// for(int j = 0; j < polyData.size(); j ++ )
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// {
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// vertCnt = polyData[j].size()/2;
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// ppg[j].resize(vertCnt);
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//
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// for(int i = 0; i < vertCnt; i ++ )
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// {
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// X = polyData[j][2*i];
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// Y = polyData[j][2*i+1];
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// ppg[j][i].X = (X + xOffset) * scale;
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// ppg[j][i].Y = (Y + yOffset) * scale;
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// }
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// }
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// m_dScale = scale;
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// m_dXOffset = xOffset;
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// m_dYOffset = yOffset;
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//
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// return true;
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//}
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//
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//void CClipperHandler::SaveToMemeory(Polygons *ppg, vector< DOUBLEVEC >& polyData)
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//{
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// if(0 == ppg)
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// return;
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// Polygons& pp = *ppg;
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//
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// polyData.reserve(pp.size());
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// vector<double> vec;
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// for(int i = 0; i < pp.size(); i ++ )
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// {
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// DOUBLEVEC vec;
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// int vertCnt = pp[i].size();
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// vec.resize(vertCnt*2 );
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// for(int j = 0; j < vertCnt; j ++ )
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// {
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// vec[2*j] = pp[i][j].X /m_dScale - m_dXOffset;
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// vec[2*j+1] = pp[i][j].Y /m_dScale - m_dXOffset;
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// }
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// polyData.push_back(vec);
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// }
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//
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//
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//}
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//void CClipperHandler::SaveToFile(char *filename, Polygons *ppg)
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//{
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// if(0 == ppg)
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// return;
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// FILE *f = fopen(filename, "w");
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// if (!f) return;
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// double X ;
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// double Y;
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// Polygons& pp = *ppg;
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// fprintf(f, "%d\n", pp.size());
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// for (unsigned i = 0; i < pp.size(); ++i)
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// {
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// fprintf(f, "%d\n", pp[i].size());
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// //if (scale > 1.01 || scale < 0.99) {
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// // for (unsigned j = 0; j < pp[i].size(); ++j)
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// // fprintf(f, "%.6lf, %.6lf,\n",
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// // (double)pp[i][j].X /scale, (double)pp[i][j].Y /scale);
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// //}
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// //else
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// //{
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// for (unsigned j = 0; j < pp[i].size(); ++j)
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// fprintf(f, "%g, %g,\n", pp[i][j].X, pp[i][j].Y );
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// //}
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// }
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// fclose(f);
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//}
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/** <20><><EFBFBD><EFBFBD><EFBFBD>ν<EFBFBD><CEBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>㣬<EFBFBD><E3A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뵽solution<6F><6E>,eTypeΪ<65><CEAA><EFBFBD><EFBFBD>ģʽ<C4A3><CABD><EFBFBD>ཻ<EFBFBD><E0BDBB><EFBFBD>ϲ<EFBFBD><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>(exclusive or)*/
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/** <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><CEBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
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bool CClipperHandler::Execute(ClipperPolygons& polySubject, ClipperPolygons& polyClip, ClipperPolygons& polySolution, EClipType eType)
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{
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m_pSubject = & polySubject;
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m_pClip = &polyClip;
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//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD> <20><> <20>Ŵ<EFBFBD><C5B4><EFBFBD><EFBFBD>ӣ<EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if(!GetOperationParas())
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return false;
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Clipper clpr;
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ClipType ctType = (ClipType)eType;
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Polygons subject,clip,solution;
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ClipPolysToPolygons(&polySubject,&subject);
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ClipPolysToPolygons(&polyClip,&clip);
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clpr.AddPolygons(subject, ptSubject);
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clpr.AddPolygons(clip, ptClip);
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if (!clpr.Execute(ctType, solution, pftEvenOdd, pftEvenOdd))
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return false;
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PolygonToClipPolys(&solution, &polySolution);
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return true;
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}
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bool CClipperHandler::GetOperationParas()
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{
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//<2F><>ȡ<EFBFBD><C8A1>ֵ
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int nScale = m_nPrec + 1; //<2F>Ŵ<EFBFBD><C5B4><EFBFBD><EFBFBD><EFBFBD>
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if(m_pSubject == NULL || m_pClip == NULL)
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return false;
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double xmin,ymin;
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double xmin2,ymin2;
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if(!GetMinimumValue(*m_pSubject,xmin,ymin))
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return false;
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if(!GetMinimumValue(*m_pClip,xmin2,ymin2))
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return false;
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//<2F>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Сֵ
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#ifndef _QT_VERSION
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xmin = min(xmin,xmin2);
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ymin = min(ymin,ymin2);
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#else
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xmin = std::min(xmin,xmin2);
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ymin = std::min(ymin,ymin2);
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#endif
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m_dXOffset = xmin/* - ZERO10*/;
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m_dYOffset = ymin/* - ZERO10*/;
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//m_nXInitOffset = floor(xmin); //<2F><><EFBFBD>β<EFBFBD><CEB2><EFBFBD><EFBFBD><EFBFBD>Сֵ
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//m_nYInitOffset = floor(ymin);
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//xmin -= m_nXInitOffset; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD>
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//ymin -= m_nYInitOffset;
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//xmin *= nScale;
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//ymin *= nScale;
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//m_nXScaleOffset
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//xmin2 = xmin - m_nXOffset;
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//ymin2 = ymin - m_nYOffset;
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return true;
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}
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inline long64 Round(double val)
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{
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if ((val < 0)) return (long64)(val - 0.5); else return (long64)(val + 0.5);
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}
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bool CClipperHandler::ClipPolysToPolygons(ClipperPolygons* pSourcePolygons, Polygons* pDestPolygons)
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{
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if(0 == pSourcePolygons || 0 == pDestPolygons)
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return false;
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Polygons* ppg = static_cast<Polygons*>(pDestPolygons);
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if(0 == ppg)
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return false;
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ppg->clear();
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ppg->resize(pSourcePolygons->size());
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int scale = pow(float(10),int(m_nPrec) );
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for(int i = 0; i < pSourcePolygons->size(); i ++ )
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{
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(*ppg)[i].resize((*pSourcePolygons)[i].size());
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for(int j = 0; j < (*pSourcePolygons)[i].size(); j ++ )
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{
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(*ppg)[i][j].X = Round ( ((*pSourcePolygons)[i][j].x - m_dXOffset) * scale );
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(*ppg)[i][j].Y = Round ( ((*pSourcePolygons)[i][j].y - m_dYOffset) * scale ) ;
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}
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}
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return true;
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}
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bool CClipperHandler::PolygonToClipPolys(Polygons* pSourcePolygons, ClipperPolygons* pDestPolygons)
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{
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if(0 == pSourcePolygons || 0 == pDestPolygons)
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return false;
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ClipperPolygons* ppg = static_cast<ClipperPolygons*>(pDestPolygons);
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if(0 == ppg)
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return false;
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ppg->clear();
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ppg->resize(pSourcePolygons->size());
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int scale = pow( float(10),int(m_nPrec) );
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for(int i = 0; i < pSourcePolygons->size(); i ++ )
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{
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(*ppg)[i].resize((*pSourcePolygons)[i].size());
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for(int j = 0; j < (*pSourcePolygons)[i].size(); j ++ )
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{
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(*ppg)[i][j].x = double( (*pSourcePolygons)[i][j].X ) / scale + m_dXOffset;
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(*ppg)[i][j].y = double( (*pSourcePolygons)[i][j].Y )/ scale + m_dYOffset;
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}
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}
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return true;
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}
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/** @<40><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><CEBC><EFBFBD>С<EFBFBD><D0A1><EFBFBD>꣬ʧ<EAA3AC>ܷ<EFBFBD><DCB7><EFBFBD>false*/
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bool CClipperHandler::GetMinimumValue(ClipperPolygons& sourcePolygons, double& xmin, double& ymin )
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{
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if(sourcePolygons.empty())
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return false;
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int nCount = 0;
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for(int i = 0; i < sourcePolygons.size(); i ++ )
|
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{
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for(int j = 0; j < sourcePolygons[i].size(); j ++ )
|
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{
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if(nCount == 0)
|
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{
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xmin = sourcePolygons[i][j].x;
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ymin = sourcePolygons[i][j].y;
|
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}
|
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else
|
|
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|
|
|
{
|
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|
|
#ifndef _QT_VERSION
|
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|
|
xmin = min(xmin,sourcePolygons[i][j].x);
|
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|
|
ymin = min(ymin,sourcePolygons[i][j].y);
|
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|
#else
|
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|
|
xmin = std::min(xmin,sourcePolygons[i][j].x);
|
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|
|
ymin = std::min(ymin,sourcePolygons[i][j].y);
|
|
|
|
|
|
#endif
|
|
|
|
|
|
}
|
|
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|
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|
|
|
|
|
|
|
nCount ++ ;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if(nCount == 0)
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/** @<40><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><CEBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>꣬ʧ<EAA3AC>ܷ<EFBFBD><DCB7><EFBFBD>false*/
|
|
|
|
|
|
bool CClipperHandler::GetMaximumValue(ClipperPolygons& sourcePolygons, double& xmax, double& ymax )
|
|
|
|
|
|
{
|
|
|
|
|
|
if(sourcePolygons.empty())
|
|
|
|
|
|
return false;
|
|
|
|
|
|
int nCount = 0;
|
|
|
|
|
|
for(int i = 0; i < sourcePolygons.size(); i ++ )
|
|
|
|
|
|
{
|
|
|
|
|
|
for(int j = 0; j < sourcePolygons[i].size(); j ++ )
|
|
|
|
|
|
{
|
|
|
|
|
|
if(nCount == 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
xmax = sourcePolygons[i][j].x;
|
|
|
|
|
|
ymax = sourcePolygons[i][j].y;
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
#ifndef _QT_VERSION
|
|
|
|
|
|
xmax = max(xmax,sourcePolygons[i][j].x);
|
|
|
|
|
|
ymax = max(ymax,sourcePolygons[i][j].y);
|
|
|
|
|
|
#else
|
|
|
|
|
|
xmax = std::max(xmax,sourcePolygons[i][j].x);
|
|
|
|
|
|
ymax = std::max(ymax,sourcePolygons[i][j].y);
|
|
|
|
|
|
#endif
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nCount ++ ;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if(nCount == 0)
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
}//namespace
|
