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make_blade.cpp
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make_blade.cpp
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#include <fstream>
#include <iostream>
#include <string>
#include <sstream>
#include <cmath>
#include <vector>
#include <TColgp_Array1OfPnt.hxx>
#include <TColGeom_Array1OfBSplineCurve.hxx>
#include <gp_Pnt.hxx>
#include <GeomAPI_PointsToBSpline.hxx>
#include <Geom_BSplineCurve.hxx>
#include <IGESControl_Controller.hxx>
#include <IGESControl_Writer.hxx>
#include <BRepOffsetAPI_ThruSections.hxx>
#include <BRep_Builder.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <TopoDS_Compound.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <GeomLib_Interpolate.hxx>
#include <GeomAPI_Interpolate.hxx>
#include <TopoDS_Face.hxx>
#include <TopExp_Explorer.hxx>
#include <Geom_Surface.hxx>
#include <BRep_Tool.hxx>
#include <TopoDS.hxx>
#include <GeomFill_BoundWithSurf.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom2dAdaptor_HCurve.hxx>
#include <GeomAdaptor_HSurface.hxx>
#include <GeomAdaptor_HCurve.hxx>
#include <Adaptor3d_CurveOnSurface.hxx>
#include <GC_MakeArcOfCircle.hxx>
#include <BRepPrimAPI_MakePrism.hxx>
#include <OCC.h>
using namespace std;
double get_param_x(double, Handle(Geom_Curve));
gp_Pnt getPoint(std::string, double);
gp_Pnt rotate(gp_Pnt, double, double, double, double);
gp_Pnt rotate(gp_Pnt, double, double, double, double, bool);
int main(int argc, char **argv) {
ifstream in("data.dat");
if(!in.good()) {
printf("Could not find 'data.dat'. Exiting.\n");
exit(1);
}
std::string line;
int station_number, nlofts=0, loft_num, nsections=0, nspars;
double *aero_cent, *aero_orig, *twist, *chord, *z_station, dr, *spars;
string *filename;
IGESControl_Controller::Init();
IGESControl_Writer iges_write;
getline(in,line);
stringstream ss;
ss << line;
ss >> nsections;
getline(in,line);
ss.clear();
ss.str(std::string());
ss.clear();
ss << line;
ss >> nlofts;
getline(in,line);
ss.clear();
ss.str(std::string());
ss.clear();
ss << line;
ss >> nspars;
TColGeom_Array1OfBSplineCurve top_curves(0, nsections-1);
TColGeom_Array1OfBSplineCurve bot_curves(0, nsections-1);
aero_cent = new double[nsections];
aero_orig = new double[nsections];
twist = new double[nsections];
chord = new double[nsections];
z_station = new double[nsections];
filename = new string[nsections];
BRepOffsetAPI_ThruSections **top_lofts, **bot_lofts;
top_lofts = new BRepOffsetAPI_ThruSections*[nlofts];
bot_lofts = new BRepOffsetAPI_ThruSections*[nlofts];
for(int n=0;n<nlofts;n++) {
top_lofts[n] = new BRepOffsetAPI_ThruSections(Standard_False, Standard_False, 1.0e-2);
bot_lofts[n] = new BRepOffsetAPI_ThruSections(Standard_False, Standard_False, 1.0e-2);
top_lofts[n]->SetSmoothing(true);
bot_lofts[n]->SetSmoothing(true);
}
BRepOffsetAPI_ThruSections **spar_surfs;
spar_surfs = new BRepOffsetAPI_ThruSections*[nspars];
for(int n=0;n<nspars;n++) {
spar_surfs[n] = new BRepOffsetAPI_ThruSections(Standard_False, Standard_False, 1.0e-2);
spar_surfs[n]->SetSmoothing(true);
}
BRep_Builder blade_builder;
TopoDS_Compound blade_comp;
blade_builder.MakeCompound(blade_comp);
for(int n=0;n<nsections;n++) {
getline(in,line);
ss.clear();
ss.str(std::string());
ss << line;
ss >> station_number;
ss >> filename[station_number-1];
}
getline(in,line);
for(int n=0;n<nsections;n++) {
getline(in,line);
ss.clear();
ss.str(std::string());
ss << line;
ss >> station_number;
ss >> z_station[station_number-1];
ss >> twist[station_number-1];
ss >> dr;
ss >> chord[station_number-1];
ss >> aero_cent[station_number-1];
ss >> aero_orig[station_number-1];
ss >> loft_num;
//printf("%d %f %f %f %f %f %d\n",station_number,z_station[n],twist[n], chord[n],aero_cent[n],aero_orig[n],loft_num);
cout << filename[station_number-1].c_str() << endl;
ifstream airfoil(filename[station_number-1].c_str());
int np = 0;
while(!airfoil.eof()) {
getline(airfoil,line);
np++;
}
np = np - 1;
airfoil.clear();
airfoil.seekg(0, ios::beg);
gp_Pnt pnt(0.0, 0.0, 0.0);
gp_Pnt new_pnt(0.0, 0.0, 0.0);
int loc, cnt1=0,cnt2=0;
bool top_side = true, fore = false;
char c;
TColgp_Array1OfPnt top(0,(np-1)/2);
TColgp_Array1OfPnt bot(0,(np-1)/2);
for(int i=0;i<(np-1)/2;i++) {
getline(airfoil,line);
pnt = getPoint(line, z_station[station_number-1]);
new_pnt = rotate(pnt, chord[station_number-1], twist[station_number-1], aero_cent[station_number-1], aero_orig[station_number-1]);
top.SetValue(i, new_pnt);
}
getline(airfoil, line);
pnt = getPoint(line, z_station[station_number-1]);
new_pnt = rotate(pnt, chord[station_number-1], twist[station_number-1], aero_cent[station_number-1], aero_orig[station_number-1]);
top.SetValue((np-1)/2, new_pnt);
bot.SetValue(0, new_pnt);
for(int i=1;i<(np-1)/2;i++) {
getline(airfoil,line);
pnt = getPoint(line, z_station[station_number-1]);
new_pnt = rotate(pnt, chord[station_number-1], twist[station_number-1], aero_cent[station_number-1], aero_orig[station_number-1]);
bot.SetValue(i, new_pnt);
}
getline(airfoil, line);
pnt = getPoint(line, z_station[station_number-1]);
new_pnt = rotate(pnt, chord[station_number-1], twist[station_number-1], aero_cent[station_number-1], aero_orig[station_number-1]);
bot.SetValue((np-1)/2, new_pnt);
airfoil.close();
Standard_Boolean per = false;
Standard_Real tol = 1.0e-4;
GeomAPI_PointsToBSpline interp_top(top, 3, 3);
GeomAPI_PointsToBSpline interp_bot(bot, 3, 3);
Handle(Geom_BSplineCurve) top_curve = interp_top.Curve();
Handle(Geom_BSplineCurve) bot_curve = interp_bot.Curve();
// Get the tangent direction from the top and bottom curves
gp_Pnt p1, p2;
gp_Vec v1, v2;
top_curve->D1(top_curve->LastParameter(), p1, v1);
bot_curve->D1(bot_curve->FirstParameter(), p2, v2);
gp_Vec avg_vec(0.5*(v1.X()+v2.X()),
0.5*(v1.Y()+v2.Y()),
0.5*(v1.Z()+v2.Z()));
Standard_Real avg_mag = avg_vec.Magnitude();
avg_vec.SetX(avg_vec.X()/avg_mag);
avg_vec.SetY(avg_vec.Y()/avg_mag);
avg_vec.SetZ(avg_vec.Z()/avg_mag);
// Get the position of the second control point away from the leading edge on the top and bottom curves
gp_Pnt le_pole = top_curve->Pole(top_curve->NbPoles());
gp_Pnt le_pole_top = top_curve->Pole(top_curve->NbPoles()-1);
gp_Pnt le_pole_bot = bot_curve->Pole(2);
// Modify the control point to make sure the tangency is equal
double mag_top = sqrt(pow(le_pole_top.X()-le_pole.X(),2)+
pow(le_pole_top.Y()-le_pole.Y(),2));
double mag_bot = sqrt(pow(le_pole_bot.X()-le_pole.X(),2)+
pow(le_pole_bot.Y()-le_pole.Y(),2));
top_curve->SetPole(top_curve->NbPoles()-1, gp_Pnt(le_pole.X()-avg_vec.X()*mag_top,le_pole.Y()-avg_vec.Y()*mag_top, le_pole.Z()));
bot_curve->SetPole(2, gp_Pnt(le_pole.X()+avg_vec.X()*mag_bot,le_pole.Y()+avg_vec.Y()*mag_bot, le_pole.Z()));
top_curves.SetValue(station_number-1, top_curve);
bot_curves.SetValue(station_number-1, bot_curve);
BRepBuilderAPI_MakeEdge *te = new BRepBuilderAPI_MakeEdge(top_curve);
BRepBuilderAPI_MakeEdge *be = new BRepBuilderAPI_MakeEdge(bot_curve);
BRepBuilderAPI_MakeWire *tw = new BRepBuilderAPI_MakeWire(te->Edge());
BRepBuilderAPI_MakeWire *bw = new BRepBuilderAPI_MakeWire(be->Edge());
top_lofts[loft_num-1]->AddWire(tw->Wire());
bot_lofts[loft_num-1]->AddWire(bw->Wire());
iges_write.AddGeom(top_curve);
iges_write.AddGeom(bot_curve);
}
getline(in, line);
spars = new double[nspars];
for(int n=0;n<nspars;n++) {
getline(in, line);
ss.clear();
ss.str(std::string());
ss << line;
ss >> spars[n];
}
for(int n=0;n<nlofts;n++) {
//iges_write.AddShape(top_lofts[n]->Shape());
//iges_write.AddShape(bot_lofts[n]->Shape());
blade_builder.Add(blade_comp,top_lofts[n]->Shape());
blade_builder.Add(blade_comp,bot_lofts[n]->Shape());
if(n<nlofts-1) {
bspline_curve *le = new bspline_curve(3, 4);
bspline_curve *tet = new bspline_curve(3, 4);
bspline_curve *teb = new bspline_curve(3, 4);
TopoDS_Face face1, face2, face3, face4;
for(TopExp_Explorer Exe(top_lofts[n]->Shape(), TopAbs_FACE); Exe.More(); Exe.Next()) {
face1 = TopoDS::Face(Exe.Current());
}
for(TopExp_Explorer Exe(top_lofts[n+1]->Shape(), TopAbs_FACE); Exe.More(); Exe.Next()) {
face2 = TopoDS::Face(Exe.Current());
}
for(TopExp_Explorer Exe(bot_lofts[n+1]->Shape(), TopAbs_FACE); Exe.More(); Exe.Next()) {
face3 = TopoDS::Face(Exe.Current());
}
for(TopExp_Explorer Exe(bot_lofts[n]->Shape(), TopAbs_FACE); Exe.More(); Exe.Next()) {
face4 = TopoDS::Face(Exe.Current());
}
Handle(Geom_Surface) surf1 = BRep_Tool::Surface(face1);
Handle(Geom_Surface) surf2 = BRep_Tool::Surface(face2);
Handle(Geom_Surface) surf3 = BRep_Tool::Surface(face3);
Handle(Geom_Surface) surf4 = BRep_Tool::Surface(face4);
gp_Pnt sp, ep;
gp_Vec svu, svv, evu, evv;
Standard_Real u1,u2,v1,v2;
surf1->Bounds(u1,u2,v1,v2);
surf1->D1(u2,v2,sp,svu,svv);
surf2->Bounds(u1,u2,v1,v2);
surf2->D1(u2,v1,ep,evu,evv);
double dz = (ep.Z()-sp.Z())/3.0;
le->SetPoint(1,sp);
le->SetPoint(2,sp.X()+dz*svv.X()/svv.Z(),sp.Y()+dz*svv.Y()/svv.Z(),sp.Z()+dz);
le->SetPoint(3,ep.X()-dz*evv.X()/evv.Z(),ep.Y()-dz*evv.Y()/evv.Z(),ep.Z()-dz);
le->SetPoint(4,ep);
//iges_write.AddGeom(le->curve());
surf1->Bounds(u1,u2,v1,v2);
surf1->D1(u1,v2,sp,svu,svv);
surf2->Bounds(u1,u2,v1,v2);
surf2->D1(u1,v1,ep,evu,evv);
dz = (ep.Z()-sp.Z())/3.0;
tet->SetPoint(1,sp);
tet->SetPoint(2,sp.X()+dz*svv.X()/svv.Z(),sp.Y()+dz*svv.Y()/svv.Z(),sp.Z()+dz);
tet->SetPoint(3,ep.X()-dz*evv.X()/evv.Z(),ep.Y()-dz*evv.Y()/evv.Z(),ep.Z()-dz);
tet->SetPoint(4,ep);
//iges_write.AddGeom(tet->curve());
surf4->Bounds(u1,u2,v1,v2);
surf4->D1(u2,v2,sp,svu,svv);
surf3->Bounds(u1,u2,v1,v2);
surf3->D1(u2,v1,ep,evu,evv);
dz = (ep.Z()-sp.Z())/3.0;
teb->SetPoint(1,sp);
teb->SetPoint(2,sp.X()+dz*svv.X()/svv.Z(),sp.Y()+dz*svv.Y()/svv.Z(),sp.Z()+dz);
teb->SetPoint(3,ep.X()-dz*evv.X()/evv.Z(),ep.Y()-dz*evv.Y()/evv.Z(),ep.Z()-dz);
teb->SetPoint(4,ep);
//iges_write.AddGeom(teb->curve());
surf1->Bounds(u1,u2,v1,v2);
surf1->D1(u1,v2,sp,svu,svv);
Handle(Geom_Curve) sct = surf1->VIso(v2);
surf2->Bounds(u1,u2,v1,v2);
surf2->D1(u1,v2,sp,svu,svv);
Handle(Geom_Curve) ect = surf2->VIso(v1);
surf3->Bounds(u1,u2,v1,v2);
surf3->D1(u1,v2,sp,svu,svv);
Handle(Geom_Curve) ecb = surf3->VIso(v1);
surf4->Bounds(u1,u2,v1,v2);
surf4->D1(u1,v2,sp,svu,svv);
Handle(Geom_Curve) scb = surf4->VIso(v2);
GeomAdaptor_Curve crv1(le->curve());
GeomAdaptor_Curve crv2(tet->curve());
GeomAdaptor_Curve crv3(teb->curve());
Handle(GeomAdaptor_HCurve) hcurve1 = new GeomAdaptor_HCurve(crv1);
Handle(GeomAdaptor_HCurve) hcurve2 = new GeomAdaptor_HCurve(crv2);
Handle(GeomAdaptor_HCurve) hcurve3 = new GeomAdaptor_HCurve(crv3);
GeomFill_SimpleBound *bnd1 = new GeomFill_SimpleBound(hcurve1,1e-2,0);
GeomFill_SimpleBound *bnd2 = new GeomFill_SimpleBound(hcurve2,1e-2,0);
GeomFill_SimpleBound *bnd3 = new GeomFill_SimpleBound(hcurve3,1e-2,0);
GeomFill_ConstrainedFilling *top_surf = new GeomFill_ConstrainedFilling(3,250);
GeomFill_ConstrainedFilling *bot_surf = new GeomFill_ConstrainedFilling(3,250);
TopExp_Explorer exp1(face1, TopAbs_EDGE);
exp1.Next(); exp1.Next();
TopoDS_Edge ed1 = TopoDS::Edge(exp1.Current());
TopExp_Explorer exp2(face2, TopAbs_EDGE);
TopoDS_Edge ed2 = TopoDS::Edge(exp2.Current());
TopExp_Explorer exp3(face3, TopAbs_EDGE);
TopoDS_Edge ed3 = TopoDS::Edge(exp3.Current());
TopExp_Explorer exp4(face4, TopAbs_EDGE);
exp4.Next(); exp4.Next();
TopoDS_Edge ed4 = TopoDS::Edge(exp4.Current());
Standard_Real Tol3=1.0e-6, Tola=1.0e-3;
surf1->Bounds(u1,u2,v1,v2);
Handle(Geom2d_Curve) hcurve = BRep_Tool::CurveOnSurface(ed1,face1,v1,v2);
hcurve = new Geom2d_TrimmedCurve(hcurve,v1,v2);
Handle(Geom2d_Curve) myParamCurve = hcurve;
Handle(GeomAdaptor_HSurface) Surface = new GeomAdaptor_HSurface(surf1);
Handle(Geom2dAdaptor_HCurve) ParamCurve = new Geom2dAdaptor_HCurve(myParamCurve);
Adaptor3d_CurveOnSurface CurveOnSurf = Adaptor3d_CurveOnSurface(ParamCurve,Surface);
GeomFill_BoundWithSurf *myBoundary1 = new GeomFill_BoundWithSurf(CurveOnSurf, Tol3, Tola);
surf2->Bounds(u1,u2,v1,v2);
hcurve = BRep_Tool::CurveOnSurface(ed2,face2,v1,v2);
hcurve = new Geom2d_TrimmedCurve(hcurve,v1,v2);
myParamCurve = hcurve;
Surface = new GeomAdaptor_HSurface(surf2);
ParamCurve = new Geom2dAdaptor_HCurve(myParamCurve);
CurveOnSurf = Adaptor3d_CurveOnSurface(ParamCurve,Surface);
GeomFill_BoundWithSurf *myBoundary2 = new GeomFill_BoundWithSurf(CurveOnSurf, Tol3, Tola);
surf3->Bounds(u1,u2,v1,v2);
hcurve = BRep_Tool::CurveOnSurface(ed3,face3,v1,v2);
hcurve = new Geom2d_TrimmedCurve(hcurve,v1,v2);
myParamCurve = hcurve;
Surface = new GeomAdaptor_HSurface(surf3);
ParamCurve = new Geom2dAdaptor_HCurve(myParamCurve);
CurveOnSurf = Adaptor3d_CurveOnSurface(ParamCurve,Surface);
GeomFill_BoundWithSurf *myBoundary3 = new GeomFill_BoundWithSurf(CurveOnSurf, Tol3, Tola);
surf4->Bounds(u1,u2,v1,v2);
hcurve = BRep_Tool::CurveOnSurface(ed4,face4,v1,v2);
hcurve = new Geom2d_TrimmedCurve(hcurve,v1,v2);
myParamCurve = hcurve;
Surface = new GeomAdaptor_HSurface(surf4);
ParamCurve = new Geom2dAdaptor_HCurve(myParamCurve);
CurveOnSurf = Adaptor3d_CurveOnSurface(ParamCurve,Surface);
GeomFill_BoundWithSurf *myBoundary4 = new GeomFill_BoundWithSurf(CurveOnSurf, Tol3, Tola);
top_surf->Init(myBoundary1,bnd1,myBoundary2,bnd2,Standard_True);
BRepBuilderAPI_MakeFace *top_face = new BRepBuilderAPI_MakeFace(top_surf->Surface(),1.0e-6);
//iges_write.AddShape(top_face->Face());
bot_surf->Init(myBoundary3,bnd1,myBoundary4,bnd3,Standard_True);
BRepBuilderAPI_MakeFace *bot_face = new BRepBuilderAPI_MakeFace(bot_surf->Surface(),1.0e-6);
//iges_write.AddShape(bot_face->Face());
blade_builder.Add(blade_comp, top_face->Shape());
blade_builder.Add(blade_comp, bot_face->Shape());
}
}
for(int n=0;n<nspars;n++) {
gp_Pnt tp(spars[n], 10.0, z_station[0]-2.0);
gp_Pnt bp(spars[n], -10.0, z_station[0]-2.0);
gp_Pnt tpr, bpr;
tpr = rotate(tp, chord[0], twist[0], aero_cent[0], aero_orig[0], false);
bpr = rotate(bp, chord[0], twist[0], aero_cent[0], aero_orig[0], false);
BRepBuilderAPI_MakeEdge *e = new BRepBuilderAPI_MakeEdge(tpr, bpr);
BRepBuilderAPI_MakeWire *w = new BRepBuilderAPI_MakeWire(e->Edge());
spar_surfs[n]->AddWire(w->Wire());
for(int s=0;s<nsections;s++) {
tp = gp_Pnt(spars[n], 10.0, z_station[s]);
bp = gp_Pnt(spars[n], -10.0, z_station[s]);
tpr = rotate(tp, chord[s], twist[s], aero_cent[s], aero_orig[s], false);
bpr = rotate(bp, chord[s], twist[s], aero_cent[s], aero_orig[s], false);
e = new BRepBuilderAPI_MakeEdge(tpr, bpr);
w = new BRepBuilderAPI_MakeWire(e->Edge());
spar_surfs[n]->AddWire(w->Wire());
}
tp = gp_Pnt(spars[n], 10.0, z_station[nsections-1]+2.0);
bp = gp_Pnt(spars[n], -10.0, z_station[nsections-1]+2.0);
tpr = rotate(tp, chord[nsections-1], twist[nsections-1], aero_cent[nsections-1], aero_orig[nsections-1], false);
bpr = rotate(bp, chord[nsections-1], twist[nsections-1], aero_cent[nsections-1], aero_orig[nsections-1], false);
e = new BRepBuilderAPI_MakeEdge(tpr, bpr);
w = new BRepBuilderAPI_MakeWire(e->Edge());
spar_surfs[n]->AddWire(w->Wire());
}
TopoDS_Shape blade = blade_comp;
for(int n=0;n<nspars;n++) {
BRepAlgoAPI_Cut *cut1 = new BRepAlgoAPI_Cut(blade, spar_surfs[n]->Shape());
blade = cut1->Shape();
}
iges_write.AddShape(blade);
iges_write.Write("blade.igs");
return 0;
}
gp_Pnt getPoint(std::string line, double z) {
gp_Pnt pnt;
stringstream ss;
double x,y;
ss << line;
ss >> x;
ss >> y;
pnt.SetX(x);
pnt.SetY(y);
pnt.SetZ(z);
return pnt;
}
gp_Pnt rotate(gp_Pnt pnt, double factor, double twist, double aero_cent, double aero_orig) {
double PI = 3.141592653;
double tr = twist*PI/180.0;
gp_Pnt new_pnt(0.0, 0.0, 0.0);
new_pnt.SetX(pnt.X() - (aero_orig + (0.25-aero_cent)));
new_pnt.SetX(new_pnt.X()*factor);
new_pnt.SetY(pnt.Y()*factor);
new_pnt.SetX((cos(tr)*new_pnt.X()) - (sin(tr)*new_pnt.Y()));
new_pnt.SetY((sin(tr)*new_pnt.X()) + (cos(tr)*new_pnt.Y()));
new_pnt.SetZ(pnt.Z());
return new_pnt;
}
gp_Pnt rotate(gp_Pnt pnt, double factor, double twist, double aero_cent, double aero_orig, bool mult) {
double PI = 3.141592653;
double tr = twist*PI/180.0;
gp_Pnt new_pnt(0.0, 0.0, 0.0);
new_pnt.SetX(pnt.X() - (aero_orig + (0.25-aero_cent)));
new_pnt.SetX(new_pnt.X()*factor);
if(mult == true) {
new_pnt.SetY(pnt.Y()*factor);
} else {
new_pnt.SetY(pnt.Y());
}
new_pnt.SetX((cos(tr)*new_pnt.X()) - (sin(tr)*new_pnt.Y()));
new_pnt.SetY((sin(tr)*new_pnt.X()) + (cos(tr)*new_pnt.Y()));
new_pnt.SetZ(pnt.Z());
return new_pnt;
}
double get_param_x(double x, Handle(Geom_Curve) c) {
double px, f1, f2, error = 1.0e6;
gp_Pnt pnt;
px = 0.0;
do {
c->D0(px,pnt);
f1 = pnt.X()-x;
c->D0(px+1.0e-3,pnt);
f2 = pnt.X()-x;
px = px - (f1/((f2-f1)/1.0e-3));
error = abs(f1);
} while(error > 1.0e-6);
return px;
}