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750 lines
18 KiB
C++
750 lines
18 KiB
C++
//20.11.1999 third part of stlgeom.cc, functions with chart and atlas
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#include <mystdlib.h>
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#include <myadt.hpp>
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#include <linalg.hpp>
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#include <gprim.hpp>
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#include <meshing.hpp>
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#include "stlgeom.hpp"
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namespace netgen
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{
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int chartdebug = 0;
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void STLGeometry :: MakeAtlas(Mesh & mesh)
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{
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int timer1 = NgProfiler::CreateTimer ("makeatlas");
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int timer2 = NgProfiler::CreateTimer ("makeatlas - part 2");
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int timer3 = NgProfiler::CreateTimer ("makeatlas - part 3");
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PushStatusF("Make Atlas");
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double h = mparam.maxh;
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double atlasminh = 5e-3 * Dist (boundingbox.PMin(), boundingbox.PMax());
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PrintMessage(5, "atlasminh = ", atlasminh);
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//speedup for make atlas
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if (GetNT() > 50000)
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mesh.SetGlobalH(min2 (0.05*Dist (boundingbox.PMin(), boundingbox.PMax()),
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mparam.maxh));
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atlas.SetSize(0);
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ClearSpiralPoints();
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BuildSmoothEdges();
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NgProfiler::StartTimer (timer1);
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double chartangle = stlparam.chartangle;
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double outerchartangle = stlparam.outerchartangle;
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chartangle = chartangle/180.*M_PI;
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outerchartangle = outerchartangle/180.*M_PI;
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double coschartangle = cos(chartangle);
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double cosouterchartangle = cos(outerchartangle);
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double cosouterchartanglehalf = cos(0.5*outerchartangle);
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double sinchartangle = sin(chartangle);
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double sinouterchartangle = sin(outerchartangle);
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Array<int> outermark(GetNT()); //marks all trigs form actual outer region
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Array<int> outertested(GetNT()); //marks tested trigs for outer region
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Array<int> pointstochart(GetNP()); //point in chart becomes chartnum
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Array<int> innerpointstochart(GetNP()); //point in chart becomes chartnum
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Array<int> chartpoints; //point in chart becomes chartnum
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Array<int> innerchartpoints;
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Array<int> dirtycharttrigs;
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Array<int> chartdistacttrigs (GetNT()); //outercharttrigs
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chartdistacttrigs = 0;
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STLBoundary chartbound(this); //knows the actual chart boundary
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//int chartboundarydivisions = 10;
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markedsegs.SetSize(0); //for testing!!!
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Array<int> chartpointchecked(GetNP()); //for dirty-chart-trigs
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pointstochart.SetSize(GetNP());
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innerpointstochart.SetSize(GetNP());
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chartmark.SetSize(GetNT());
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for (int i = 1; i <= GetNP(); i++)
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{
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innerpointstochart.Elem(i) = 0;
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pointstochart.Elem(i) = 0;
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chartpointchecked.Elem(i) = 0;
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}
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double eps = 1e-12 * Dist (boundingbox.PMin(), boundingbox.PMax());
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int spiralcheckon = stldoctor.spiralcheck;
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if (!spiralcheckon) {PrintWarning("++++++++++++\nspiral deactivated by user!!!!\n+++++++++++++++"); }
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chartmark = 0;
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outermark = 0;
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outertested = 0;
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double atlasarea = Area();
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double workedarea = 0;
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double showinc = 100.*5000./(double)GetNT();
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double nextshow = 0;
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// Point<3> startp;
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int lastunmarked = 1;
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PrintMessage(5,"one dot per 5000 triangles: ");
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int markedtrigcnt = 0;
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while (markedtrigcnt < GetNT())
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{
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if (multithread.terminate) { PopStatus(); return; }
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if (workedarea / atlasarea*100. >= nextshow)
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{PrintDot(); nextshow+=showinc;}
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SetThreadPercent(100.0 * workedarea / atlasarea);
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STLChart * chart = new STLChart(this);
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atlas.Append(chart);
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//find unmarked trig
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int prelastunmarked = lastunmarked;
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bool found = false;
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for (int j = lastunmarked; j <= GetNT(); j++)
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if (!GetMarker(j))
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{
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found = true;
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lastunmarked = j;
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break;
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}
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chartpoints.SetSize(0);
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innerchartpoints.SetSize(0);
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chartbound.Clear();
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chartbound.SetChart(chart);
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if (!found) { PrintSysError("Make Atlas, no starttrig found"); return; }
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//find surrounding trigs
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// int starttrig = j;
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int starttrig = lastunmarked;
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Point<3> startp = GetPoint(GetTriangle(starttrig).PNum(1));
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int accepted;
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int chartnum = GetNOCharts();
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Vec<3> sn = GetTriangle(starttrig).Normal();
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chart->SetNormal (startp, sn);
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SetMarker(starttrig, chartnum);
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markedtrigcnt++;
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chart->AddChartTrig(starttrig);
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chartbound.AddTriangle(GetTriangle(starttrig));
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workedarea += GetTriangle(starttrig).Area(points);
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for (int i = 1; i <= 3; i++)
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{
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innerpointstochart.Elem(GetTriangle(starttrig).PNum(i)) = chartnum;
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pointstochart.Elem(GetTriangle(starttrig).PNum(i)) = chartnum;
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chartpoints.Append(GetTriangle(starttrig).PNum(i));
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innerchartpoints.Append(GetTriangle(starttrig).PNum(i));
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}
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bool changed = true;
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int oldstartic = 1;
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int oldstartic2;
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NgProfiler::StartTimer (timer2);
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while (changed)
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{
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changed = false;
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oldstartic2 = oldstartic;
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oldstartic = chart->GetNT();
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// for (ic = oldstartic2; ic <= chart->GetNT(); ic++)
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for (int ic = oldstartic2; ic <= oldstartic; ic++)
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{
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int i = chart->GetTrig(ic);
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if (GetMarker(i) == chartnum)
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{
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for (int j = 1; j <= NONeighbourTrigs(i); j++)
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{
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int nt = NeighbourTrig(i,j);
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int np1, np2;
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GetTriangle(i).GetNeighbourPoints(GetTriangle(nt),np1,np2);
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if (GetMarker(nt) == 0 && !IsEdge(np1,np2))
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{
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Vec<3> n2 = GetTriangle(nt).Normal();
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if ( (n2 * sn) >= coschartangle )
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{
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accepted = 1;
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/*
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//alter spiralentest, schnell, aber ungenau
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for (k = 1; k <= 3; k++)
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{
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//find overlapping charts:
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Point3d pt = GetPoint(GetTriangle(nt).PNum(k));
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if (innerpointstochart.Get(GetTriangle(nt).PNum(k)) != chartnum)
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{
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for (l = 1; l <= chartpoints.Size(); l++)
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{
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Vec3d vptpl(GetPoint(chartpoints.Get(l)), pt);
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double vlen = vptpl.Length();
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if (vlen > 0)
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{
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vptpl /= vlen;
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if ( fabs( vptpl * sn) > sinchartangle )
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{
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accepted = 0;
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break;
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}
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}
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}
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}
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}
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*/
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//find overlapping charts exacter (fast, too):
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for (int k = 1; k <= 3; k++)
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{
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int nnt = NeighbourTrig(nt,k);
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if (GetMarker(nnt) != chartnum)
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{
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int nnp1, nnp2;
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GetTriangle(nt).GetNeighbourPoints(GetTriangle(nnt),nnp1,nnp2);
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accepted = chartbound.TestSeg(GetPoint(nnp1),
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GetPoint(nnp2),
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sn,sinchartangle,1 /*chartboundarydivisions*/ ,points, eps);
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Vec<3> n3 = GetTriangle(nnt).Normal();
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if ( (n3 * sn) >= coschartangle &&
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IsSmoothEdge (nnp1, nnp2) )
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accepted = 1;
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}
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if (!accepted) {break;}
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}
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if (accepted)
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{
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SetMarker(nt, chartnum);
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changed = true;
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markedtrigcnt++;
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workedarea += GetTriangle(nt).Area(points);
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chart->AddChartTrig(nt);
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chartbound.AddTriangle(GetTriangle(nt));
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for (int k = 1; k <= 3; k++)
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{
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if (innerpointstochart.Get(GetTriangle(nt).PNum(k))
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!= chartnum)
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{
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innerpointstochart.Elem(GetTriangle(nt).PNum(k)) = chartnum;
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pointstochart.Elem(GetTriangle(nt).PNum(k)) = chartnum;
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chartpoints.Append(GetTriangle(nt).PNum(k));
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innerchartpoints.Append(GetTriangle(nt).PNum(k));
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}
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}
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}
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}
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}
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}
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}
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}
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}
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NgProfiler::StopTimer (timer2);
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NgProfiler::StartTimer (timer3);
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//find outertrigs
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// chartbound.Clear();
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// warum, ic-bound auf edge macht Probleme js ???
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outermark.Elem(starttrig) = chartnum;
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//chart->AddOuterTrig(starttrig);
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changed = true;
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oldstartic = 1;
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while (changed)
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{
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changed = false;
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oldstartic2 = oldstartic;
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oldstartic = chart->GetNT();
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for (int ic = oldstartic2; ic <= oldstartic; ic++)
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{
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int i = chart->GetTrig(ic);
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if (outermark.Get(i) != chartnum) continue;
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for (int j = 1; j <= NONeighbourTrigs(i); j++)
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{
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int nt = NeighbourTrig(i,j);
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if (outermark.Get(nt) == chartnum) continue;
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const STLTriangle & ntrig = GetTriangle(nt);
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int np1, np2;
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GetTriangle(i).GetNeighbourPoints(GetTriangle(nt),np1,np2);
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if (IsEdge (np1, np2)) continue;
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/*
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if (outertested.Get(nt) == chartnum)
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continue;
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*/
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outertested.Elem(nt) = chartnum;
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Vec<3> n2 = GetTriangle(nt).Normal();
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//abfragen, ob noch im tolerierten Winkel
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if ( (n2 * sn) >= cosouterchartangle )
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{
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accepted = 1;
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bool isdirtytrig = false;
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Vec<3> gn = GetTriangle(nt).GeomNormal(points);
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double gnlen = gn.Length();
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if (n2 * gn <= cosouterchartanglehalf * gnlen)
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isdirtytrig = true;
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//zurueckweisen, falls eine Spiralartige outerchart entsteht
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//find overlapping charts exacter:
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//do not check dirty trigs!
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if (spiralcheckon && !isdirtytrig)
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for (int k = 1; k <= 3; k++)
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{
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int nnt = NeighbourTrig(nt,k);
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if (outermark.Elem(nnt) != chartnum)
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{
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int nnp1, nnp2;
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GetTriangle(nt).GetNeighbourPoints(GetTriangle(nnt),nnp1,nnp2);
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accepted =
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chartbound.TestSeg(GetPoint(nnp1),GetPoint(nnp2),
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sn,sinouterchartangle, 0 /*chartboundarydivisions*/ ,points, eps);
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Vec<3> n3 = GetTriangle(nnt).Normal();
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if ( (n3 * sn) >= cosouterchartangle &&
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IsSmoothEdge (nnp1, nnp2) )
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accepted = 1;
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}
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if (!accepted) break;
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}
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// outer chart is only small environment of
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// inner chart:
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if (accepted)
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{
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accepted = 0;
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for (int k = 1; k <= 3; k++)
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if (innerpointstochart.Get(ntrig.PNum(k)) == chartnum)
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{
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accepted = 1;
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break;
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}
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if (!accepted)
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for (int k = 1; k <= 3; k++)
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{
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Point<3> pt = GetPoint(ntrig.PNum(k));
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double h2 = sqr(mesh.GetH(pt));
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for (int l = 1; l <= innerchartpoints.Size(); l++)
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{
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double tdist =
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Dist2(pt, GetPoint (innerchartpoints.Get(l)));
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if (tdist < 4 * h2)
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{
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accepted = 1;
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break;
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}
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}
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if (accepted) break;
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}
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}
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if (accepted)
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{
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changed = true;
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outermark.Elem(nt) = chartnum;
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if (GetMarker(nt) != chartnum)
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{
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chartbound.AddTriangle(GetTriangle(nt));
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chart->AddOuterTrig(nt);
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for (int k = 1; k <= 3; k++)
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{
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if (pointstochart.Get(GetTriangle(nt).PNum(k))
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!= chartnum)
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{
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pointstochart.Elem(GetTriangle(nt).PNum(k)) = chartnum;
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chartpoints.Append(GetTriangle(nt).PNum(k));
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}
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}
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}
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}
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}
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}
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}
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}
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NgProfiler::StopTimer (timer3);
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//end of while loop for outer chart
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GetDirtyChartTrigs(chartnum, *chart, outermark, chartpointchecked, dirtycharttrigs);
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//dirtycharttrigs are local (chart) point numbers!!!!!!!!!!!!!!!!
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if (dirtycharttrigs.Size() != 0 &&
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(dirtycharttrigs.Size() != chart->GetNChartT() || dirtycharttrigs.Size() != 1))
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{
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if (dirtycharttrigs.Size() == chart->GetNChartT() && dirtycharttrigs.Size() != 1)
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{
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//if all trigs would be eliminated -> leave 1 trig!
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dirtycharttrigs.SetSize(dirtycharttrigs.Size() - 1);
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}
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for (int k = 1; k <= dirtycharttrigs.Size(); k++)
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{
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int tn = chart->GetChartTrig(dirtycharttrigs.Get(k));
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outermark.Elem(tn) = 0; //not necessary, for later use
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SetMarker(tn, 0);
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markedtrigcnt--;
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workedarea -= GetTriangle(tn).Area(points);
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}
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chart->MoveToOuterChart(dirtycharttrigs);
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lastunmarked = 1;
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lastunmarked = prelastunmarked;
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}
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//calculate an estimate meshsize, not to produce too large outercharts, with factor 2 larger!
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RestrictHChartDistOneChart(chartnum, chartdistacttrigs, mesh, h, 0.5, atlasminh);
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// NgProfiler::Print(stdout);
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}
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NgProfiler::StopTimer (timer1);
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// NgProfiler::Print(stdout);
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PrintMessage(5,"");
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PrintMessage(5,"NO charts=", atlas.Size());
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int cnttrias = 0;
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outerchartspertrig.SetSize(GetNT());
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for (int i = 1; i <= atlas.Size(); i++)
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{
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for (int j = 1; j <= GetChart(i).GetNT(); j++)
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{
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int tn = GetChart(i).GetTrig(j);
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AddOCPT(tn,i);
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}
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cnttrias += GetChart(i).GetNT();
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}
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PrintMessage(5, "NO outer chart trias=", cnttrias);
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//sort outerchartspertrig
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for (int i = 1; i <= GetNT(); i++)
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{
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for (int k = 1; k < GetNOCPT(i); k++)
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for (int j = 1; j < GetNOCPT(i); j++)
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{
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int swap = GetOCPT(i,j);
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if (GetOCPT(i,j+1) < swap)
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{
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SetOCPT(i,j,GetOCPT(i,j+1));
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SetOCPT(i,j+1,swap);
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}
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}
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// check make atlas
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if (GetChartNr(i) <= 0 || GetChartNr(i) > GetNOCharts())
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PrintSysError("Make Atlas: chartnr(", i, ")=0!!");
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}
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mesh.SetGlobalH(mparam.maxh);
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mesh.SetMinimalH(mparam.minh);
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AddConeAndSpiralEdges();
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PrintMessage(5,"Make Atlas finished");
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PopStatus();
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}
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int STLGeometry::TrigIsInOC(int tn, int ocn) const
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{
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if (tn < 1 || tn > GetNT())
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{
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// assert (1);
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abort ();
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PrintSysError("STLGeometry::TrigIsInOC illegal tn: ", tn);
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return 0;
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}
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/*
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int firstval = 0;
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int i;
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for (i = 1; i <= GetNOCPT(tn); i++)
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{
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if (GetOCPT(tn, i) == ocn) {firstval = 1;}
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}
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*/
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int found = 0;
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int inc = 1;
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while (inc <= GetNOCPT(tn)) {inc *= 2;}
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inc /= 2;
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int start = inc;
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while (!found && inc > 0)
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{
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if (GetOCPT(tn,start) > ocn) {inc = inc/2; start -= inc;}
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else if (GetOCPT(tn,start) < ocn) {inc = inc/2; if (start+inc <= GetNOCPT(tn)) {start += inc;}}
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else {found = 1;}
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}
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return GetOCPT(tn, start) == ocn;
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}
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int STLGeometry :: GetChartNr(int i) const
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{
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if (i > chartmark.Size())
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{
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PrintSysError("GetChartNr(", i, ") not possible!!!");
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i = 1;
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}
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return chartmark.Get(i);
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}
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/*
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int STLGeometry :: GetMarker(int i) const
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{
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return chartmark.Get(i);
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}
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*/
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void STLGeometry :: SetMarker(int nr, int m)
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{
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chartmark.Elem(nr) = m;
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}
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int STLGeometry :: GetNOCharts() const
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{
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return atlas.Size();
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}
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const STLChart& STLGeometry :: GetChart(int nr) const
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{
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if (nr > atlas.Size())
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{
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PrintSysError("GetChart(", nr, ") not possible!!!");
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nr = 1;
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}
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return *(atlas.Get(nr));
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}
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int STLGeometry :: AtlasMade() const
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{
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return chartmark.Size() != 0;
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}
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/*
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//return 1 if not exists
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int AddIfNotExists(Array<int>& list, int x)
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{
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int i;
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for (i = 1; i <= list.Size(); i++)
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{
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if (list.Get(i) == x) {return 0;}
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}
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list.Append(x);
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return 1;
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}
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*/
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void STLGeometry :: GetInnerChartLimes(Array<twoint>& limes, int chartnum)
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{
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int j, k;
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int t, nt, np1, np2;
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limes.SetSize(0);
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STLChart& chart = GetChart(chartnum);
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for (j = 1; j <= chart.GetNChartT(); j++)
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{
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t = chart.GetChartTrig(j);
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const STLTriangle& tt = GetTriangle(t);
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for (k = 1; k <= 3; k++)
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{
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nt = NeighbourTrig(t,k);
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if (GetChartNr(nt) != chartnum)
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{
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tt.GetNeighbourPoints(GetTriangle(nt),np1,np2);
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if (!IsEdge(np1,np2))
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{
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limes.Append(twoint(np1,np2));
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/*
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p3p1 = GetPoint(np1);
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p3p2 = GetPoint(np2);
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if (AddIfNotExists(limes,np1))
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{
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plimes1.Append(p3p1);
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//plimes1trigs.Append(t);
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//plimes1origin.Append(np1);
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}
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if (AddIfNotExists(limes1,np2))
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{
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plimes1.Append(p3p2);
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//plimes1trigs.Append(t);
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//plimes1origin.Append(np2);
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}
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//chart.AddILimit(twoint(np1,np2));
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for (int di = 1; di <= divisions; di++)
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{
|
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double f1 = (double)di/(double)(divisions+1.);
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double f2 = (divisions+1.-(double)di)/(double)(divisions+1.);
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|
|
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plimes1.Append(Point3d(p3p1.X()*f1+p3p2.X()*f2,
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p3p1.Y()*f1+p3p2.Y()*f2,
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p3p1.Z()*f1+p3p2.Z()*f2));
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//plimes1trigs.Append(t);
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//plimes1origin.Append(0);
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}
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*/
|
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}
|
|
}
|
|
}
|
|
}
|
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}
|
|
|
|
|
|
|
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void STLGeometry :: GetDirtyChartTrigs(int chartnum, STLChart& chart,
|
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const Array<int>& outercharttrigs,
|
|
Array<int>& chartpointchecked,
|
|
Array<int>& dirtytrigs)
|
|
{
|
|
dirtytrigs.SetSize(0);
|
|
int j,k,n;
|
|
|
|
int np1, np2, nt;
|
|
int cnt = 0;
|
|
|
|
for (j = 1; j <= chart.GetNChartT(); j++)
|
|
{
|
|
int t = chart.GetChartTrig(j);
|
|
const STLTriangle& tt = GetTriangle(t);
|
|
|
|
for (k = 1; k <= 3; k++)
|
|
{
|
|
nt = NeighbourTrig(t,k);
|
|
if (GetChartNr(nt) != chartnum && outercharttrigs.Get(nt) != chartnum)
|
|
{
|
|
tt.GetNeighbourPoints(GetTriangle(nt),np1,np2);
|
|
if (!IsEdge(np1,np2))
|
|
{
|
|
dirtytrigs.Append(j); //local numbers!!!
|
|
cnt++;
|
|
break; //only once per trig!!!
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cnt = 0;
|
|
|
|
int ap1, ap2, tn1, tn2, l, problem, pn;
|
|
Array<int> trigsaroundp;
|
|
|
|
for (j = chart.GetNChartT(); j >= 1; j--)
|
|
{
|
|
int t = chart.GetChartTrig(j);
|
|
const STLTriangle& tt = GetTriangle(t);
|
|
|
|
for (k = 1; k <= 3; k++)
|
|
{
|
|
pn = tt.PNum(k);
|
|
//if (chartpointchecked.Get(pn) == chartnum)
|
|
//{continue;}
|
|
|
|
int checkpoint = 0;
|
|
for (n = 1; n <= trigsperpoint.EntrySize(pn); n++)
|
|
{
|
|
if (trigsperpoint.Get(pn,n) != t && //ueberfluessig???
|
|
GetChartNr(trigsperpoint.Get(pn,n)) != chartnum &&
|
|
outercharttrigs.Get(trigsperpoint.Get(pn,n)) != chartnum) {checkpoint = 1;};
|
|
}
|
|
if (checkpoint)
|
|
{
|
|
chartpointchecked.Elem(pn) = chartnum;
|
|
|
|
GetSortedTrianglesAroundPoint(pn,t,trigsaroundp);
|
|
trigsaroundp.Append(t); //ring
|
|
|
|
problem = 0;
|
|
//forward:
|
|
for (l = 2; l <= trigsaroundp.Size()-1; l++)
|
|
{
|
|
tn1 = trigsaroundp.Get(l-1);
|
|
tn2 = trigsaroundp.Get(l);
|
|
const STLTriangle& t1 = GetTriangle(tn1);
|
|
const STLTriangle& t2 = GetTriangle(tn2);
|
|
t1.GetNeighbourPoints(t2, ap1, ap2);
|
|
if (IsEdge(ap1,ap2)) break;
|
|
|
|
if (GetChartNr(tn2) != chartnum && outercharttrigs.Get(tn2) != chartnum) {problem = 1;}
|
|
}
|
|
|
|
//backwards:
|
|
for (l = trigsaroundp.Size()-1; l >= 2; l--)
|
|
{
|
|
tn1 = trigsaroundp.Get(l+1);
|
|
tn2 = trigsaroundp.Get(l);
|
|
const STLTriangle& t1 = GetTriangle(tn1);
|
|
const STLTriangle& t2 = GetTriangle(tn2);
|
|
t1.GetNeighbourPoints(t2, ap1, ap2);
|
|
if (IsEdge(ap1,ap2)) break;
|
|
|
|
if (GetChartNr(tn2) != chartnum && outercharttrigs.Get(tn2) != chartnum) {problem = 1;}
|
|
}
|
|
if (problem && !IsInArray(j,dirtytrigs))
|
|
{
|
|
dirtytrigs.Append(j);
|
|
cnt++;
|
|
break; //only once per triangle
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|