1 // File: BRepBlend_SurfCurvEvolRadInv.cxx
2 // Created: Tue Jul 29 12:13:34 1997
3 // Author: Jerome LEMONIER
7 #include <BRepBlend_SurfCurvEvolRadInv.ixx>
9 //=======================================================================
12 //=======================================================================
13 BRepBlend_SurfCurvEvolRadInv::BRepBlend_SurfCurvEvolRadInv
14 (const Handle(Adaptor3d_HSurface)& S,
15 const Handle(Adaptor3d_HCurve)& C,
16 const Handle(Adaptor3d_HCurve)& Cg,
17 const Handle(Law_Function)& Evol): surf(S),curv(C),guide(Cg)
21 //=======================================================================
24 //=======================================================================
25 void BRepBlend_SurfCurvEvolRadInv::Set(const Standard_Integer Choix)
43 //=======================================================================
46 //=======================================================================
47 Standard_Integer BRepBlend_SurfCurvEvolRadInv::NbEquations() const
52 //=======================================================================
55 //=======================================================================
56 Standard_Boolean BRepBlend_SurfCurvEvolRadInv::Value(const math_Vector& X,math_Vector& F)
59 gp_Vec d1gui(0.,0.,0.);
60 guide->D1(X(1),ptgui,d1gui);
61 ray = sg1*tevol->Value(X(1));
62 gp_Vec nplan = d1gui.Normalized();
63 // Standard_Real theD = -(nplan.XYZ().Dot(ptgui.XYZ()));
64 gp_XYZ nplanXYZ(nplan.XYZ());
65 gp_XYZ ptguiXYZ(ptgui.XYZ());
66 Standard_Real theD = nplanXYZ.Dot(ptguiXYZ) ;
69 gp_Pnt ptcur = curv->Value(X(2));
70 F(1) = nplan.XYZ().Dot(ptcur.XYZ()) + theD;
71 gp_Pnt2d p2drst = rst->Value(X(3));
74 surf->D1(p2drst.X(),p2drst.Y(),pts,du,dv);
75 F(2) = nplan.XYZ().Dot(pts.XYZ()) + theD;
76 gp_Vec ns = du.Crossed(dv);
77 Standard_Real norm = nplan.Crossed(ns).Magnitude();
78 Standard_Real unsurnorm = 1./norm;
79 ns.SetLinearForm(nplan.Dot(ns),nplan, -1.,ns);
80 ns.Multiply(unsurnorm);
81 gp_Vec ref(ptcur,pts);
83 ref.SetLinearForm(ray,ns,ref);
84 F(3) = ref.SquareMagnitude() - ray*ray;
88 //=======================================================================
91 //=======================================================================
92 Standard_Boolean BRepBlend_SurfCurvEvolRadInv::Derivatives(const math_Vector& X,math_Matrix& D)
96 guide->D2(X(1),ptgui,d1gui,d2gui);
97 Standard_Real normd1gui = d1gui.Magnitude(),dray;
98 Standard_Real unsurnormd1gui = 1./normd1gui;
99 tevol->D1(X(1),ray,dray);
102 gp_Vec nplan = d1gui.Multiplied(unsurnormd1gui);
104 dnplan.SetLinearForm(-nplan.Dot(d2gui),nplan,d2gui);
105 dnplan.Multiply(unsurnormd1gui);
106 Standard_Real dtheD = - nplan.XYZ().Dot(d1gui.XYZ()) - dnplan.XYZ().Dot(ptgui.XYZ());
109 curv->D1(X(2),ptcur,d1cur);
110 D(1,1) = dnplan.XYZ().Dot(ptcur.XYZ()) + dtheD;
111 D(1,2) = nplan.XYZ().Dot(d1cur.XYZ());
116 rst->D1(X(3),p2drst,d1rst);
118 gp_Vec d1u,d1v,d2u,d2v,duv;
119 surf->D2(p2drst.X(),p2drst.Y(),pts,d1u,d1v,d2u,d2v,duv);
120 D(2,1) = dnplan.XYZ().Dot(pts.XYZ()) + dtheD;
123 dwrstpts.SetLinearForm(d1rst.X(),d1u,d1rst.Y(),d1v);
124 D(2,3) = nplan.XYZ().Dot(dwrstpts.XYZ());
126 gp_Vec nsurf = d1u.Crossed(d1v);
127 gp_Vec dunsurf = d2u.Crossed(d1v).Added(d1u.Crossed(duv));
128 gp_Vec dvnsurf = d1u.Crossed(d2v).Added(duv.Crossed(d1v));
130 dwrstnsurf.SetLinearForm(d1rst.X(),dunsurf,d1rst.Y(),dvnsurf);
132 gp_Vec nplancrosnsurf = nplan.Crossed(nsurf);
133 gp_Vec dwguinplancrosnsurf = dnplan.Crossed(nsurf);
134 gp_Vec dwrstnplancrosnsurf = nplan.Crossed(dwrstnsurf);
136 Standard_Real norm2 = nplancrosnsurf.SquareMagnitude();
137 Standard_Real norm = sqrt(norm2);
138 Standard_Real unsurnorm = 1./norm;
139 Standard_Real raysurnorm = ray*unsurnorm;
140 Standard_Real unsurnorm2 = unsurnorm * unsurnorm;
141 Standard_Real raysurnorm2 = ray*unsurnorm2;
142 Standard_Real dwguinorm = unsurnorm*nplancrosnsurf.Dot(dwguinplancrosnsurf);
143 Standard_Real dwrstnorm = unsurnorm*nplancrosnsurf.Dot(dwrstnplancrosnsurf);
145 Standard_Real nplandotnsurf = nplan.Dot(nsurf);
146 Standard_Real dwguinplandotnsurf = dnplan.Dot(nsurf);
147 Standard_Real dwrstnplandotnsurf = nplan.Dot(dwrstnsurf);
149 gp_Vec temp,dwguitemp,dwrsttemp;
150 temp.SetLinearForm(nplandotnsurf,nplan,-1.,nsurf);
151 dwguitemp.SetLinearForm(nplandotnsurf,dnplan,dwguinplandotnsurf,nplan);
152 dwrsttemp.SetLinearForm(dwrstnplandotnsurf,nplan,-1.,dwrstnsurf);
154 gp_Vec corde(ptcur,pts);
155 gp_Vec ref,dwguiref,dwrstref;
156 ref.SetLinearForm(raysurnorm,temp,corde);
157 dwguiref.SetLinearForm(raysurnorm,dwguitemp,-raysurnorm2*dwguinorm,temp);
158 dwguiref.SetLinearForm(1.,dwguiref,dray*unsurnorm,temp);
159 dwrstref.SetLinearForm(raysurnorm,dwrsttemp,-raysurnorm2*dwrstnorm,temp,dwrstpts);
162 D(3,1) = ref.Dot(dwguiref) - 2.*dray*ray;
163 D(3,2) = -ref.Dot(d1cur);
164 D(3,3) = ref.Dot(dwrstref);
166 return Standard_True;
169 //=======================================================================
172 //=======================================================================
173 Standard_Boolean BRepBlend_SurfCurvEvolRadInv::Values(const math_Vector& X,math_Vector& F,math_Matrix& D)
176 gp_Vec d1gui(0.,0.,0.),d2gui(0.,0.,0.);
177 guide->D2(X(1),ptgui,d1gui,d2gui);
179 tevol->D1(X(1),ray,dray);
182 Standard_Real normd1gui = d1gui.Magnitude();
183 Standard_Real unsurnormd1gui = 1./normd1gui;
184 gp_Vec nplan = d1gui.Multiplied(unsurnormd1gui);
185 // Standard_Real theD = -(nplan.XYZ().Dot(ptgui.XYZ()));
186 gp_XYZ nplanXYZ(nplan.XYZ());
187 gp_XYZ ptcurXYZ(ptgui.XYZ());
188 Standard_Real theD = nplanXYZ.Dot(ptcurXYZ) ;
189 theD = theD * (-1.) ;
192 dnplan.SetLinearForm(-nplan.Dot(d2gui),nplan,d2gui);
193 dnplan.Multiply(unsurnormd1gui);
194 Standard_Real dtheD = - nplan.XYZ().Dot(d1gui.XYZ()) - dnplan.XYZ().Dot(ptgui.XYZ());
197 curv->D1(X(2),ptcur,d1cur);
198 F(1) = nplan.XYZ().Dot(ptcur.XYZ()) + theD;
199 D(1,1) = dnplan.XYZ().Dot(ptcur.XYZ()) + dtheD;
200 D(1,2) = nplan.XYZ().Dot(d1cur.XYZ());
205 rst->D1(X(3),p2drst,d1rst);
207 gp_Vec d1u,d1v,d2u,d2v,duv;
208 surf->D2(p2drst.X(),p2drst.Y(),pts,d1u,d1v,d2u,d2v,duv);
209 F(2) = nplan.XYZ().Dot(pts.XYZ()) + theD;
210 D(2,1) = dnplan.XYZ().Dot(pts.XYZ()) + dtheD;
213 dwrstpts.SetLinearForm(d1rst.X(),d1u,d1rst.Y(),d1v);
214 D(2,3) = nplan.XYZ().Dot(dwrstpts.XYZ());
216 gp_Vec nsurf = d1u.Crossed(d1v);
217 gp_Vec dunsurf = d2u.Crossed(d1v).Added(d1u.Crossed(duv));
218 gp_Vec dvnsurf = d1u.Crossed(d2v).Added(duv.Crossed(d1v));
220 dwrstnsurf.SetLinearForm(d1rst.X(),dunsurf,d1rst.Y(),dvnsurf);
222 gp_Vec nplancrosnsurf = nplan.Crossed(nsurf);
223 gp_Vec dwguinplancrosnsurf = dnplan.Crossed(nsurf);
224 gp_Vec dwrstnplancrosnsurf = nplan.Crossed(dwrstnsurf);
226 Standard_Real norm2 = nplancrosnsurf.SquareMagnitude();
227 Standard_Real norm = sqrt(norm2);
228 Standard_Real unsurnorm = 1./norm;
229 Standard_Real raysurnorm = ray*unsurnorm;
230 Standard_Real unsurnorm2 = unsurnorm * unsurnorm;
231 Standard_Real raysurnorm2 = ray*unsurnorm2;
232 Standard_Real dwguinorm = unsurnorm*nplancrosnsurf.Dot(dwguinplancrosnsurf);
233 Standard_Real dwrstnorm = unsurnorm*nplancrosnsurf.Dot(dwrstnplancrosnsurf);
235 Standard_Real nplandotnsurf = nplan.Dot(nsurf);
236 Standard_Real dwguinplandotnsurf = dnplan.Dot(nsurf);
237 Standard_Real dwrstnplandotnsurf = nplan.Dot(dwrstnsurf);
239 gp_Vec temp,dwguitemp,dwrsttemp;
240 temp.SetLinearForm(nplandotnsurf,nplan,-1.,nsurf);
241 dwguitemp.SetLinearForm(nplandotnsurf,dnplan,dwguinplandotnsurf,nplan);
242 dwrsttemp.SetLinearForm(dwrstnplandotnsurf,nplan,-1.,dwrstnsurf);
244 gp_Vec corde(ptcur,pts);
245 gp_Vec ref,dwguiref,dwrstref;
246 ref.SetLinearForm(raysurnorm,temp,corde);
247 F(3) = ref.SquareMagnitude() - ray*ray;
248 dwguiref.SetLinearForm(raysurnorm,dwguitemp,-raysurnorm2*dwguinorm,temp);
249 dwguiref.SetLinearForm(1.,dwguiref,dray*unsurnorm,temp);
250 dwrstref.SetLinearForm(raysurnorm,dwrsttemp,-raysurnorm2*dwrstnorm,temp,dwrstpts);
253 D(3,1) = ref.Dot(dwguiref) - 2.*dray*ray;
254 D(3,2) = -ref.Dot(d1cur);
255 D(3,3) = ref.Dot(dwrstref);
256 return Standard_True;
259 //=======================================================================
262 //=======================================================================
263 void BRepBlend_SurfCurvEvolRadInv::Set(const Handle(Adaptor2d_HCurve2d)& Rst)
268 //=======================================================================
271 //=======================================================================
272 void BRepBlend_SurfCurvEvolRadInv::GetTolerance(math_Vector& Tolerance,const Standard_Real Tol) const
274 Tolerance(1) = guide->Resolution(Tol);
275 Tolerance(2) = curv->Resolution(Tol);
277 ru = surf->UResolution(Tol);
278 rv = surf->VResolution(Tol);
279 Tolerance(3) = rst->Resolution(Min(ru,rv));
282 //=======================================================================
285 //=======================================================================
286 void BRepBlend_SurfCurvEvolRadInv::GetBounds(math_Vector& InfBound,math_Vector& SupBound) const
288 InfBound(1) = guide->FirstParameter();
289 SupBound(1) = guide->LastParameter();
290 InfBound(2) = curv->FirstParameter();
291 SupBound(2) = curv->LastParameter();
292 InfBound(3) = rst->FirstParameter();
293 SupBound(3) = rst->LastParameter();
296 //=======================================================================
299 //=======================================================================
300 Standard_Boolean BRepBlend_SurfCurvEvolRadInv::IsSolution(const math_Vector& Sol,const Standard_Real Tol)
302 math_Vector valsol(1,3);
304 if (Abs(valsol(1)) <= Tol &&
305 Abs(valsol(2)) <= Tol &&
306 Abs(valsol(3)) <= 2*Tol*Abs(ray)) {
307 return Standard_True;
309 return Standard_False;