mirror of
https://github.com/NGSolve/netgen.git
synced 2024-11-11 16:49:16 +05:00
refactor fieldlines code
This commit is contained in:
Matthias Hochsteger
parent
693135d52c
commit
5e977e819f
@ -14,6 +14,6 @@ install( TARGETS visual ${NG_INSTALL_DIR})
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install(FILES
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meshdoc.hpp mvdraw.hpp
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vispar.hpp visual.hpp vssolution.hpp
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vispar.hpp visual.hpp vssolution.hpp vsfieldlines.hpp
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DESTINATION ${NG_INSTALL_DIR_INCLUDE}/visualization COMPONENT netgen_devel
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)
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@ -71,7 +71,7 @@ namespace netgen
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K.SetSize(steps);
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}
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void RKStepper :: StartNextValCalc(const Point3d & astartval, const double astartt, const double ah, const bool aadaptive)
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void RKStepper :: StartNextValCalc(const Point<3> & astartval, const double astartt, const double ah, const bool aadaptive)
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{
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//cout << "Starting RK-Step with h=" << ah << endl;
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@ -83,12 +83,9 @@ namespace netgen
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adrun = 0;
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}
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bool RKStepper :: GetNextData(Point3d & val, double & t, double & ah)
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bool RKStepper :: GetNextData(Point<3> & val, double & t, double & ah)
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{
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bool finished(false);
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//cout << "stepcount " << stepcount << endl;
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bool finished = false;
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if(stepcount <= steps)
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{
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@ -125,9 +122,9 @@ namespace netgen
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}
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else if (adrun == 2)
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{
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Point3d valh2 = val;
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Point<3> valh2 = val;
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val = valh2 + 1./(pow(2.,order)-1.) * (valh2 - valh);
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Vec3d errvec = val - valh;
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auto errvec = val - valh;
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double err = errvec.Length();
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@ -172,7 +169,7 @@ namespace netgen
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}
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bool RKStepper :: FeedNextF(const Vec3d & f)
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bool RKStepper :: FeedNextF(const Vec<3> & f)
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{
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K[stepcount] = f;
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stepcount++;
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@ -181,19 +178,17 @@ namespace netgen
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void FieldLineCalc :: GenerateFieldLines(NgArray<Point3d> & potential_startpoints, const int numlines, const int gllist,
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const double minval, const double maxval, const int logscale, double phaser, double phasei)
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void FieldLineCalc :: GenerateFieldLines(Array<Point<3>> & potential_startpoints, const int numlines)
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{
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NgArray<Point3d> points;
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NgArray<double> values;
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NgArray<bool> drawelems;
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NgArray<int> dirstart;
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if(vsol -> iscomplex)
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SetPhase(phaser,phasei);
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Array<Point<3>> line_points;
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Array<double> line_values;
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Array<bool> drawelems;
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Array<int> dirstart;
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pstart.SetSize0();
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pend.SetSize0();
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values.SetSize0();
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double crit = 1.0;
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@ -201,8 +196,7 @@ namespace netgen
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{
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double sum = 0;
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double lami[3];
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double values[6];
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Vec3d v;
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Vec<3> v;
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for(int i=0; i<potential_startpoints.Size(); i++)
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{
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@ -212,15 +206,8 @@ namespace netgen
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mesh.SetPointSearchStartElement(elnr);
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if (mesh.GetDimension()==3)
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vss.GetValues ( vsol, elnr, lami[0], lami[1], lami[2], values);
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else
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vss.GetSurfValues ( vsol, elnr, -1, lami[0], lami[1], values);
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VisualSceneSolution::RealVec3d ( values, v, vsol->iscomplex, phaser, phasei);
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sum += v.Length();
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func(elnr, lami, v);
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sum += v.Length();
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}
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crit = sum/double(numlines);
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@ -232,8 +219,6 @@ namespace netgen
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cout << endl;
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for(int i=0; i<potential_startpoints.Size(); i++)
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{
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cout << "\rFieldline Calculation " << int(100.*i/potential_startpoints.Size()) << "%"; cout.flush();
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@ -243,7 +228,7 @@ namespace netgen
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if(calculated >= numlines) break;
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Calc(potential_startpoints[i],points,values,drawelems,dirstart);
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Calc(potential_startpoints[i],line_points,line_values,drawelems,dirstart);
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bool usable = false;
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@ -253,16 +238,9 @@ namespace netgen
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if(!drawelems[k] || !drawelems[k+1]) continue;
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usable = true;
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// vss.SetOpenGlColor (0.5*(values[k]+values[k+1]), minval, maxval, logscale);
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/*
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if (vss.usetexture == 1)
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glTexCoord1f ( 0.5*(values[k]+values[k+1]) );
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else
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*/
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vss.SetOpenGlColor (0.5*(values[k]+values[k+1]) );
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vss.DrawCylinder (points[k], points[k+1], thickness);
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pstart.Append(line_points[k]);
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pend.Append(line_points[k+1]);
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values.Append( 0.5*(line_values[k]+line_values[k+1]) );
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}
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if(usable) calculated++;
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@ -273,10 +251,10 @@ namespace netgen
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FieldLineCalc :: FieldLineCalc(const Mesh & amesh, VisualSceneSolution & avss, const VisualSceneSolution::SolData * solution,
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FieldLineCalc :: FieldLineCalc(const Mesh & amesh, const VectorFunction & afunc,
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const double rel_length, const int amaxpoints,
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const double rel_thickness, const double rel_tolerance, const int rk_type, const int adirection) :
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mesh(amesh), vss(avss), vsol(solution), stepper(rk_type)
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mesh(amesh), func(afunc), stepper(rk_type)
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{
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mesh.GetBox (pmin, pmax);
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rad = 0.5 * Dist (pmin, pmax);
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@ -305,9 +283,6 @@ namespace netgen
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}
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phaser = 1;
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phasei = 0;
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critical_value = -1;
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randomized = false;
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@ -317,24 +292,10 @@ namespace netgen
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void FieldLineCalc :: Calc(const Point3d & startpoint, NgArray<Point3d> & points, NgArray<double> & vals, NgArray<bool> & drawelems, NgArray<int> & dirstart)
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void FieldLineCalc :: Calc(const Point<3> & startpoint, Array<Point<3>> & points, Array<double> & vals, Array<bool> & drawelems, Array<int> & dirstart)
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{
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double lami[3], startlami[3];
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double values[6];
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double dummyt(0);
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Vec3d v;
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Vec3d startv;
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Point3d newp;
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double h;
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double startval;
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bool startdraw;
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bool drawelem = false;
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int elnr;
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for (int i=0; i<6; i++) values[i]=0.0;
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for (int i=0; i<3; i++) lami[i]=0.0;
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for (int i=0; i<3; i++) startlami[i]=0.0;
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Vec<3> v = 0.0;
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double startlami[3] = {0.0, 0.0, 0.0};
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points.SetSize(0);
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vals.SetSize(0);
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@ -351,14 +312,10 @@ namespace netgen
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mesh.SetPointSearchStartElement(startelnr);
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if (mesh.GetDimension()==3)
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startdraw = vss.GetValues ( vsol, startelnr, startlami[0], startlami[1], startlami[2], values);
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else
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startdraw = vss.GetSurfValues ( vsol, startelnr, -1, startlami[0], startlami[1], values);
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Vec<3> startv;
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bool startdraw = func(startelnr, startlami, startv);
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VisualSceneSolution::RealVec3d ( values, startv, vsol->iscomplex, phaser, phasei);
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startval = startv.Length();
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double startval = startv.Length();
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if(critical_value > 0 && fabs(startval) < critical_value)
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return;
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@ -375,13 +332,13 @@ namespace netgen
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vals.Append(startval);
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drawelems.Append(startdraw);
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h = 0.001*rad/startval; // otherwise no nice lines; should be made accessible from outside
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double h = 0.001*rad/startval; // otherwise no nice lines; should be made accessible from outside
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v = startv;
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if(dir == -1) v *= -1.;
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elnr = startelnr;
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lami[0] = startlami[0]; lami[1] = startlami[1]; lami[2] = startlami[2];
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int elnr = startelnr;
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double lami[3] = { startlami[0], startlami[1], startlami[2]};
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for(double length = 0; length < maxlength; length += h*vals.Last())
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@ -392,21 +349,19 @@ namespace netgen
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break;
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}
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double dummyt;
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stepper.StartNextValCalc(points.Last(),dummyt,h,true);
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stepper.FeedNextF(v);
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bool drawelem = false;
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Point<3> newp;
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while(!stepper.GetNextData(newp,dummyt,h) && elnr != -1)
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{
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elnr = mesh.GetElementOfPoint(newp,lami,true) - 1;
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if(elnr != -1)
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{
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mesh.SetPointSearchStartElement(elnr);
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if (mesh.GetDimension()==3)
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drawelem = vss.GetValues (vsol, elnr, lami[0], lami[1], lami[2], values);
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else
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drawelem = vss.GetSurfValues (vsol, elnr, -1, lami[0], lami[1], values);
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VisualSceneSolution::RealVec3d (values, v, vsol->iscomplex, phaser, phasei);
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drawelem = func(elnr, lami, v);
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if(dir == -1) v *= -1.;
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stepper.FeedNextF(v);
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}
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@ -440,7 +395,7 @@ namespace netgen
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void VisualSceneSolution :: BuildFieldLinesFromBox(NgArray<Point3d> & startpoints)
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void VisualSceneSolution :: BuildFieldLinesFromBox(Array<Point<3>> & startpoints)
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{
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shared_ptr<Mesh> mesh = GetMesh();
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if (!mesh) return;
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@ -462,7 +417,7 @@ namespace netgen
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for (int i = 1; i <= startpoints.Size(); i++)
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{
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Point3d p (fieldlines_startarea_parameter[0] + double (rand()) / RAND_MAX * (fieldlines_startarea_parameter[3]-fieldlines_startarea_parameter[0]),
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Point<3> p (fieldlines_startarea_parameter[0] + double (rand()) / RAND_MAX * (fieldlines_startarea_parameter[3]-fieldlines_startarea_parameter[0]),
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fieldlines_startarea_parameter[1] + double (rand()) / RAND_MAX * (fieldlines_startarea_parameter[4]-fieldlines_startarea_parameter[1]),
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fieldlines_startarea_parameter[2] + double (rand()) / RAND_MAX * (fieldlines_startarea_parameter[5]-fieldlines_startarea_parameter[2]));
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@ -470,7 +425,7 @@ namespace netgen
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}
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}
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void VisualSceneSolution :: BuildFieldLinesFromLine(NgArray<Point3d> & startpoints)
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void VisualSceneSolution :: BuildFieldLinesFromLine(Array<Point<3>> & startpoints)
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{
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shared_ptr<Mesh> mesh = GetMesh();
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if (!mesh) return;
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@ -480,7 +435,7 @@ namespace netgen
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{
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double s = double (rand()) / RAND_MAX;
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Point3d p (fieldlines_startarea_parameter[0] + s * (fieldlines_startarea_parameter[3]-fieldlines_startarea_parameter[0]),
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Point<3> p (fieldlines_startarea_parameter[0] + s * (fieldlines_startarea_parameter[3]-fieldlines_startarea_parameter[0]),
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fieldlines_startarea_parameter[1] + s * (fieldlines_startarea_parameter[4]-fieldlines_startarea_parameter[1]),
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fieldlines_startarea_parameter[2] + s * (fieldlines_startarea_parameter[5]-fieldlines_startarea_parameter[2]));
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@ -489,7 +444,7 @@ namespace netgen
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}
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void VisualSceneSolution :: BuildFieldLinesFromFile(NgArray<Point3d> & startpoints)
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void VisualSceneSolution :: BuildFieldLinesFromFile(Array<Point<3>> & startpoints)
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{
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shared_ptr<Mesh> mesh = GetMesh();
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if (!mesh) return;
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@ -538,7 +493,9 @@ namespace netgen
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if (keyword == "point")
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{
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(*infile) >> startpoints[numpoints].X(); (*infile) >> startpoints[numpoints].Y(); (*infile) >> startpoints[numpoints].Z();
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(*infile) >> startpoints[numpoints][0];
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(*infile) >> startpoints[numpoints][1];
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(*infile) >> startpoints[numpoints][2];
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numpoints++;
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}
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else if (keyword == "line" || keyword == "box")
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@ -546,7 +503,7 @@ namespace netgen
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for(int i=0; i<6; i++) (*infile) >> fieldlines_startarea_parameter[i];
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(*infile) >> iparam;
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NgArray<Point3d> auxpoints(iparam);
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Array<Point<3>> auxpoints(iparam);
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if (keyword == "box")
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BuildFieldLinesFromBox(auxpoints);
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@ -571,7 +528,7 @@ namespace netgen
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}
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void VisualSceneSolution :: BuildFieldLinesFromFace(NgArray<Point3d> & startpoints)
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void VisualSceneSolution :: BuildFieldLinesFromFace(Array<Point<3>> & startpoints)
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{
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shared_ptr<Mesh> mesh = GetMesh();
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if (!mesh) return;
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@ -678,8 +635,25 @@ namespace netgen
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num_fieldlineslists = (vsol -> iscomplex && !fieldlines_fixedphase) ? 100 : 1;
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double phaser=1.0;
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double phasei=0.0;
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std::function eval_func = [&](int elnr, const double * lami, Vec<3> & vec)
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{
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double values[6] = {0., 0., 0., 0., 0., 0.};
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bool drawelem;
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auto mesh = GetMesh();
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if (mesh->GetDimension()==3)
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drawelem = GetValues (vsol, elnr, lami[0], lami[1], lami[2], values);
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else
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drawelem = GetSurfValues (vsol, elnr, -1, lami[0], lami[1], values);
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FieldLineCalc linecalc(*mesh,*this,vsol,
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Vec3d v;
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RealVec3d (values, v, vsol->iscomplex, phaser, phasei);
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vec = v;
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return drawelem;
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};
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FieldLineCalc linecalc(*mesh, eval_func,
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fieldlines_rellength,fieldlines_maxpoints,fieldlines_relthickness,fieldlines_reltolerance,fieldlines_rktype);
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if(fieldlines_randomstart)
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@ -694,7 +668,7 @@ namespace netgen
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num_startpoints *= 10;
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NgArray<Point3d> startpoints(num_startpoints);
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Array<Point<3>> startpoints(num_startpoints);
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for (int ln = 0; ln < num_fieldlineslists; ln++)
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@ -722,17 +696,27 @@ namespace netgen
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cout << "phi = " << phi << endl;
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double phaser = cos(phi), phasei = sin(phi);
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phaser = cos(phi);
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phasei = sin(phi);
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linecalc.GenerateFieldLines(startpoints,num_fieldlines / num_fieldlineslists+1);
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auto & pstart = linecalc.GetPStart();
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auto & pend = linecalc.GetPEnd();
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auto & values = linecalc.GetValues();
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auto nlines = values.Size();
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glNewList(fieldlineslist+ln, GL_COMPILE);
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SetTextureMode (usetexture);
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linecalc.GenerateFieldLines(startpoints,num_fieldlines / num_fieldlineslists+1,
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fieldlineslist+ln,minval,maxval,logscale,phaser,phasei);
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for(auto i : Range(nlines))
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{
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SetOpenGlColor (values[i]);
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DrawCylinder (pstart[i], pend[i], fieldlines_relthickness);
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}
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glEndList ();
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}
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}
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101
libsrc/visualization/vsfieldlines.hpp
Normal file
101
libsrc/visualization/vsfieldlines.hpp
Normal file
@ -0,0 +1,101 @@
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#ifndef VSFIELDLINES_HPP_INCLUDED
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#define VSFIELDLINES_HPP_INCLUDED
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namespace netgen
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{
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class RKStepper
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{
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private:
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Array<double> c,b;
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TABLE<double> *a;
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int steps;
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int order;
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double tolerance;
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Array<Vec<3>> K;
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int stepcount;
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double h;
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double startt;
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double startt_bak;
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Point<3> startval;
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Point<3> startval_bak;
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bool adaptive;
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int adrun;
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Point<3> valh;
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int notrestarted;
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public:
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~RKStepper();
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RKStepper(int type = 0);
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void SetTolerance(const double tol){tolerance = tol;}
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void StartNextValCalc(const Point<3> & astartval, const double astartt, const double ah, const bool aadaptive = false);
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bool GetNextData(Point<3> & val, double & t, double & ah);
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bool FeedNextF(const Vec<3> & f);
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};
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class FieldLineCalc
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{
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private:
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const Mesh & mesh;
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typedef std::function<bool (int elnr, const double *, Vec<3> &)> VectorFunction;
|
||||
|
||||
const VectorFunction & func;
|
||||
RKStepper stepper;
|
||||
|
||||
Array<double> values;
|
||||
Array<Point<3>> pstart, pend;
|
||||
|
||||
double maxlength;
|
||||
|
||||
int maxpoints;
|
||||
|
||||
int direction;
|
||||
|
||||
Point3d pmin, pmax;
|
||||
double rad;
|
||||
|
||||
double critical_value;
|
||||
|
||||
bool randomized;
|
||||
|
||||
double thickness;
|
||||
|
||||
public:
|
||||
FieldLineCalc(const Mesh & amesh, const VectorFunction & afunc,
|
||||
const double rel_length, const int amaxpoints = -1,
|
||||
const double rel_thickness = -1, const double rel_tolerance = -1, const int rk_type = 0, const int adirection = 0);
|
||||
|
||||
void SetCriticalValue(const double val) { critical_value = val; }
|
||||
|
||||
void Randomized(void) { randomized = true; }
|
||||
void NotRandomized(void) { randomized = false; }
|
||||
|
||||
void Calc(const Point<3> & startpoint, Array<Point<3>> & points, Array<double> & vals, Array<bool> & drawelems, Array<int> & dirstart);
|
||||
|
||||
void GenerateFieldLines(Array<Point<3>> & potential_startpoints, const int numlines);
|
||||
|
||||
const auto & GetPStart() const { return pstart; }
|
||||
const auto & GetPEnd() const { return pend; }
|
||||
const auto & GetValues() const { return values; }
|
||||
const auto GetThickness() const { return thickness; }
|
||||
};
|
||||
|
||||
} // namespace netgen
|
||||
|
||||
#endif // VSFIELDLINES_HPP_INCLUDED
|
||||
@ -1,6 +1,7 @@
|
||||
#ifndef FILE_VSSOLUTION
|
||||
#define FILE_VSSOLUTION
|
||||
|
||||
#include "vsfieldlines.hpp"
|
||||
|
||||
typedef void * ClientData;
|
||||
struct Tcl_Interp;
|
||||
@ -12,8 +13,6 @@ namespace netgen
|
||||
DLL_HEADER extern void ImportSolution (const char * filename);
|
||||
|
||||
|
||||
class FieldLineCalc;
|
||||
|
||||
extern int Ng_Vis_Set (ClientData clientData,
|
||||
Tcl_Interp * interp,
|
||||
int argc, const char *argv[]);
|
||||
@ -183,10 +182,10 @@ public:
|
||||
bool imag_part;
|
||||
|
||||
private:
|
||||
void BuildFieldLinesFromFile(NgArray<Point3d> & startpoints);
|
||||
void BuildFieldLinesFromFace(NgArray<Point3d> & startpoints);
|
||||
void BuildFieldLinesFromBox(NgArray<Point3d> & startpoints);
|
||||
void BuildFieldLinesFromLine(NgArray<Point3d> & startpoints);
|
||||
void BuildFieldLinesFromFile(Array<Point<3>> & startpoints);
|
||||
void BuildFieldLinesFromFace(Array<Point<3>> & startpoints);
|
||||
void BuildFieldLinesFromBox(Array<Point<3>> & startpoints);
|
||||
void BuildFieldLinesFromLine(Array<Point<3>> & startpoints);
|
||||
// weak_ptr<Mesh> wp_mesh;
|
||||
public:
|
||||
VisualSceneSolution ();
|
||||
@ -359,95 +358,6 @@ public:
|
||||
|
||||
|
||||
|
||||
class RKStepper
|
||||
{
|
||||
private:
|
||||
NgArray<double> c,b;
|
||||
TABLE<double> *a;
|
||||
int steps;
|
||||
int order;
|
||||
|
||||
double tolerance;
|
||||
|
||||
NgArray<Vec3d> K;
|
||||
|
||||
int stepcount;
|
||||
|
||||
double h;
|
||||
double startt;
|
||||
double startt_bak;
|
||||
Point3d startval;
|
||||
Point3d startval_bak;
|
||||
|
||||
bool adaptive;
|
||||
int adrun;
|
||||
Point3d valh;
|
||||
|
||||
int notrestarted;
|
||||
|
||||
public:
|
||||
|
||||
~RKStepper();
|
||||
|
||||
RKStepper(int type = 0);
|
||||
|
||||
void SetTolerance(const double tol){tolerance = tol;}
|
||||
|
||||
void StartNextValCalc(const Point3d & astartval, const double astartt, const double ah, const bool aadaptive = false);
|
||||
|
||||
bool GetNextData(Point3d & val, double & t, double & ah);
|
||||
|
||||
bool FeedNextF(const Vec3d & f);
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
class FieldLineCalc
|
||||
{
|
||||
private:
|
||||
const Mesh & mesh;
|
||||
|
||||
VisualSceneSolution & vss;
|
||||
|
||||
const VisualSceneSolution::SolData * vsol;
|
||||
|
||||
RKStepper stepper;
|
||||
|
||||
double maxlength;
|
||||
|
||||
int maxpoints;
|
||||
|
||||
int direction;
|
||||
|
||||
Point3d pmin, pmax;
|
||||
double rad;
|
||||
double phaser, phasei;
|
||||
|
||||
double critical_value;
|
||||
|
||||
bool randomized;
|
||||
|
||||
double thickness;
|
||||
|
||||
public:
|
||||
FieldLineCalc(const Mesh & amesh, VisualSceneSolution & avss, const VisualSceneSolution::SolData * solution,
|
||||
const double rel_length, const int amaxpoints = -1,
|
||||
const double rel_thickness = -1, const double rel_tolerance = -1, const int rk_type = 0, const int adirection = 0);
|
||||
|
||||
void SetPhase(const double real, const double imag) { phaser = real; phasei = imag; }
|
||||
|
||||
void SetCriticalValue(const double val) { critical_value = val; }
|
||||
|
||||
void Randomized(void) { randomized = true; }
|
||||
void NotRandomized(void) { randomized = false; }
|
||||
|
||||
void Calc(const Point3d & startpoint, NgArray<Point3d> & points, NgArray<double> & vals, NgArray<bool> & drawelems, NgArray<int> & dirstart);
|
||||
|
||||
void GenerateFieldLines(NgArray<Point3d> & potential_startpoints, const int numlines, const int gllist,
|
||||
const double minval, const double maxval, const int logscale, double phaser, double phasei);
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user