| 1 | // Created on: 1995-04-13 |
| 2 | // Created by: Jean Yves LEBEY |
| 3 | // Copyright (c) 1995-1999 Matra Datavision |
| 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
| 5 | // |
| 6 | // This file is part of Open CASCADE Technology software library. |
| 7 | // |
| 8 | // This library is free software; you can redistribute it and/or modify it under |
| 9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 10 | // by the Free Software Foundation, with special exception defined in the file |
| 11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 12 | // distribution for complete text of the license and disclaimer of any warranty. |
| 13 | // |
| 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
| 16 | |
| 17 | #include <BRepTest.hxx> |
| 18 | |
| 19 | #include <Draw.hxx> |
| 20 | #include <Draw_Interpretor.hxx> |
| 21 | #include <DBRep.hxx> |
| 22 | #include <DrawTrSurf.hxx> |
| 23 | |
| 24 | #include <string.h> |
| 25 | #include <stdio.h> |
| 26 | |
| 27 | #include <Standard_ErrorHandler.hxx> |
| 28 | #include <Precision.hxx> |
| 29 | #include <TCollection_AsciiString.hxx> |
| 30 | #include <gp_Lin.hxx> |
| 31 | #include <gp_Pnt.hxx> |
| 32 | #include <gp_Dir.hxx> |
| 33 | #include <gp_Ax1.hxx> |
| 34 | |
| 35 | #include <ElCLib.hxx> |
| 36 | |
| 37 | #include <TColgp_SequenceOfPnt.hxx> |
| 38 | |
| 39 | #include <GeomAbs_JoinType.hxx> |
| 40 | #include <Geom_Line.hxx> |
| 41 | |
| 42 | #include <IntCurvesFace_Intersector.hxx> |
| 43 | |
| 44 | #include <TopAbs.hxx> |
| 45 | #include <TopAbs_Orientation.hxx> |
| 46 | |
| 47 | #include <TopoDS.hxx> |
| 48 | #include <TopoDS_Shape.hxx> |
| 49 | #include <TopoDS_Compound.hxx> |
| 50 | #include <TopoDS_CompSolid.hxx> |
| 51 | #include <TopoDS_Solid.hxx> |
| 52 | #include <TopoDS_Shell.hxx> |
| 53 | #include <TopoDS_Face.hxx> |
| 54 | #include <TopoDS_Wire.hxx> |
| 55 | #include <TopoDS_Edge.hxx> |
| 56 | #include <TopoDS_Vertex.hxx> |
| 57 | #include <TopoDS_Iterator.hxx> |
| 58 | |
| 59 | #include <BRep_Builder.hxx> |
| 60 | #include <BRep_Tool.hxx> |
| 61 | |
| 62 | #include <TopExp_Explorer.hxx> |
| 63 | |
| 64 | #include <TopTools_ListOfShape.hxx> |
| 65 | #include <TopTools_ListIteratorOfListOfShape.hxx> |
| 66 | #include <TopTools_MapOfShape.hxx> |
| 67 | |
| 68 | #include <LocOpe_CSIntersector.hxx> |
| 69 | #include <LocOpe_SequenceOfLin.hxx> |
| 70 | #include <LocOpe_PntFace.hxx> |
| 71 | #include <BRepFeat_MakeDPrism.hxx> |
| 72 | |
| 73 | #include <BRepTools.hxx> |
| 74 | #include <BRepIntCurveSurface_Inter.hxx> |
| 75 | #include <BRepOffset_MakeOffset.hxx> |
| 76 | #include <BRepClass3d_SolidClassifier.hxx> |
| 77 | #include <GeomAdaptor_Curve.hxx> |
| 78 | |
| 79 | static |
| 80 | void SampleEdges (const TopoDS_Shape& theShape, |
| 81 | TColgp_SequenceOfPnt& theSeq); |
| 82 | static |
| 83 | TopoDS_Face NextFaceForPrism (const TopoDS_Shape& shape, |
| 84 | const TopoDS_Shape& basis, |
| 85 | const gp_Ax1& ax1); |
| 86 | static |
| 87 | void PrintState (Draw_Interpretor& aDI, |
| 88 | const TopAbs_State& aState); |
| 89 | // |
| 90 | static Standard_Integer emptyshape(Draw_Interpretor&, Standard_Integer, const char** ); |
| 91 | static Standard_Integer subshape (Draw_Interpretor&, Standard_Integer, const char** ); |
| 92 | static Standard_Integer brepintcs (Draw_Interpretor&, Standard_Integer, const char** ); |
| 93 | static Standard_Integer MakeBoss (Draw_Interpretor&, Standard_Integer, const char** ); |
| 94 | static Standard_Integer MakeShell (Draw_Interpretor&, Standard_Integer, const char** ); |
| 95 | static Standard_Integer xbounds (Draw_Interpretor&, Standard_Integer, const char** ); |
| 96 | static Standard_Integer xclassify (Draw_Interpretor&, Standard_Integer, const char** ); |
| 97 | |
| 98 | //======================================================================= |
| 99 | //function : OtherCommands |
| 100 | //purpose : |
| 101 | //======================================================================= |
| 102 | void BRepTest::OtherCommands(Draw_Interpretor& theCommands) |
| 103 | { |
| 104 | static Standard_Boolean done = Standard_False; |
| 105 | if (done) return; |
| 106 | done = Standard_True; |
| 107 | |
| 108 | const char* g = "TOPOLOGY other commands"; |
| 109 | |
| 110 | theCommands.Add("shape", |
| 111 | "shape name V/E/W/F/Sh/So/CS/C; make a empty shape",__FILE__,emptyshape,g); |
| 112 | |
| 113 | theCommands.Add("subshape", |
| 114 | "subshape name V/E/W/F/Sh/So/CS/C index; get subsshape <index> of given type" |
| 115 | ,__FILE__,subshape,g); |
| 116 | |
| 117 | theCommands.Add("BRepIntCS", |
| 118 | "Calcul d'intersection entre face et curve : BRepIntCS curve1 [curve2 ...] shape [res] [tol]" |
| 119 | ,__FILE__,brepintcs,g); |
| 120 | |
| 121 | theCommands.Add("makeboss", "create a boss on the shape myS", __FILE__, MakeBoss, g); |
| 122 | theCommands.Add("mksh", "create a shell on Shape", __FILE__, MakeShell, g); |
| 123 | theCommands.Add("xbounds", "xbounds face", __FILE__, xbounds, g); |
| 124 | theCommands.Add("xclassify", "use xclassify Solid [Tolerance=1.e-7]", __FILE__, xclassify, g); |
| 125 | |
| 126 | |
| 127 | } |
| 128 | //======================================================================= |
| 129 | //function : emptyshape |
| 130 | //purpose : shape : shape name V/E/W/F/SH/SO/CS/C |
| 131 | //======================================================================= |
| 132 | Standard_Integer emptyshape(Draw_Interpretor& , Standard_Integer n, const char** a) |
| 133 | { |
| 134 | if (n <= 1) return 1; |
| 135 | |
| 136 | BRep_Builder B; |
| 137 | TopoDS_Shape S; |
| 138 | |
| 139 | if (n == 3) { |
| 140 | TCollection_AsciiString as(a[2]); as.LowerCase(); |
| 141 | const char* a2 = as.ToCString(); |
| 142 | |
| 143 | if ( ! strcmp(a2,"c") ) { |
| 144 | TopoDS_Compound SS; B.MakeCompound(SS); S = SS; |
| 145 | } |
| 146 | else if ( ! strcmp(a2,"cs") ) { |
| 147 | TopoDS_CompSolid SS; B.MakeCompSolid(SS); S = SS; |
| 148 | } |
| 149 | else if ( ! strcmp(a2,"so") ) { |
| 150 | TopoDS_Solid SS; B.MakeSolid(SS); S = SS; |
| 151 | } |
| 152 | else if ( ! strcmp(a2,"sh") ) { |
| 153 | TopoDS_Shell SS; B.MakeShell(SS); S = SS; |
| 154 | } |
| 155 | else if ( ! strcmp(a2,"f") ) { |
| 156 | TopoDS_Face SS; B.MakeFace(SS); S = SS; |
| 157 | } |
| 158 | else if ( ! strcmp(a2,"w") ) { |
| 159 | TopoDS_Wire SS; B.MakeWire(SS); S = SS; |
| 160 | } |
| 161 | else if ( ! strcmp(a2,"e") ) { |
| 162 | TopoDS_Edge SS; B.MakeEdge(SS); S = SS; |
| 163 | } |
| 164 | else if ( ! strcmp(a2,"v") ) { |
| 165 | TopoDS_Vertex SS; B.MakeVertex(SS); S = SS; |
| 166 | } |
| 167 | else { |
| 168 | return 1; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | const char *shapename = a[1]; |
| 173 | DBRep::Set(shapename,S); |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | //======================================================================= |
| 178 | //function : subshape |
| 179 | //purpose : |
| 180 | //======================================================================= |
| 181 | Standard_Integer subshape(Draw_Interpretor& di, Standard_Integer n, const char** a) |
| 182 | { |
| 183 | if (n <= 2) return 1; |
| 184 | |
| 185 | |
| 186 | TopoDS_Shape S = DBRep::Get(a[1]); |
| 187 | if (S.IsNull()) return 0; |
| 188 | char newname[1024]; |
| 189 | strcpy(newname,a[1]); |
| 190 | char* p = newname; |
| 191 | while (*p != '\0') p++; |
| 192 | *p = '_'; |
| 193 | p++; |
| 194 | Standard_Integer i = 0; |
| 195 | if (n == 3) { |
| 196 | Standard_Integer isub = Draw::Atoi(a[2]); |
| 197 | TopoDS_Iterator itr(S); |
| 198 | while (itr.More()) { |
| 199 | i++; |
| 200 | if ( i == isub ) { |
| 201 | Sprintf(p,"%d",i); |
| 202 | DBRep::Set(newname,itr.Value()); |
| 203 | di.AppendElement(newname); |
| 204 | break; |
| 205 | } |
| 206 | itr.Next(); |
| 207 | } |
| 208 | } |
| 209 | else { |
| 210 | // explode a type |
| 211 | TopAbs_ShapeEnum typ; |
| 212 | switch (a[2][0]) { |
| 213 | |
| 214 | case 'C' : |
| 215 | case 'c' : |
| 216 | typ = TopAbs_COMPSOLID; |
| 217 | break; |
| 218 | |
| 219 | case 'S' : |
| 220 | case 's' : |
| 221 | if ((a[2][1] == 'O')||(a[2][1] == 'o')) |
| 222 | typ = TopAbs_SOLID; |
| 223 | else if ((a[2][1] == 'H')||(a[2][1] == 'h')) |
| 224 | typ = TopAbs_SHELL; |
| 225 | else |
| 226 | return 1; |
| 227 | break; |
| 228 | |
| 229 | case 'F' : |
| 230 | case 'f' : |
| 231 | typ = TopAbs_FACE; |
| 232 | break; |
| 233 | |
| 234 | case 'W' : |
| 235 | case 'w' : |
| 236 | typ = TopAbs_WIRE; |
| 237 | break; |
| 238 | |
| 239 | case 'E' : |
| 240 | case 'e' : |
| 241 | typ = TopAbs_EDGE; |
| 242 | break; |
| 243 | |
| 244 | case 'V' : |
| 245 | case 'v' : |
| 246 | typ = TopAbs_VERTEX; |
| 247 | break; |
| 248 | |
| 249 | default : |
| 250 | return 1; |
| 251 | } |
| 252 | |
| 253 | Standard_Integer isub = Draw::Atoi(a[3]); |
| 254 | TopTools_MapOfShape M; |
| 255 | M.Add(S); |
| 256 | TopExp_Explorer ex(S,typ); |
| 257 | while (ex.More()) { |
| 258 | if (M.Add(ex.Current())) { |
| 259 | i++; |
| 260 | if ( i == isub ) { |
| 261 | Sprintf(p,"%d",i); |
| 262 | DBRep::Set(newname,ex.Current()); |
| 263 | di.AppendElement(newname); |
| 264 | break; |
| 265 | } |
| 266 | } |
| 267 | ex.Next(); |
| 268 | } |
| 269 | } |
| 270 | return 0; |
| 271 | } |
| 272 | //======================================================================= |
| 273 | //function : brepintcs |
| 274 | //purpose : |
| 275 | //======================================================================= |
| 276 | Standard_Integer brepintcs(Draw_Interpretor& di, Standard_Integer n, const char** a) |
| 277 | { |
| 278 | if (n <= 2) |
| 279 | { |
| 280 | cout<<"Invalid input arguments. Should be: curve1 [curve2 ...] shape [result] [tol]"<<endl; |
| 281 | return 1; |
| 282 | } |
| 283 | Standard_Integer indshape = 2; |
| 284 | TopoDS_Shape S; |
| 285 | for( ; indshape <= n-1 ; indshape++) |
| 286 | { |
| 287 | S = DBRep::Get(a[indshape]); |
| 288 | if(!S.IsNull()) |
| 289 | break; |
| 290 | } |
| 291 | if (S.IsNull()) |
| 292 | { |
| 293 | cout<<"Invalid input shape"<<endl; |
| 294 | return 1; |
| 295 | } |
| 296 | |
| 297 | BRepIntCurveSurface_Inter theAlg; |
| 298 | double tol=1e-6; |
| 299 | if( indshape < n-1) |
| 300 | { |
| 301 | Standard_Real preci = atof(a[n-1]); |
| 302 | if(preci >= Precision::Confusion()) |
| 303 | tol = preci; |
| 304 | } |
| 305 | int nbpi=0; |
| 306 | gp_Pnt curp; |
| 307 | TopoDS_Compound aComp; |
| 308 | BRep_Builder aB; |
| 309 | aB.MakeCompound(aComp); |
| 310 | if (indshape == 2) { |
| 311 | Handle(Geom_Curve) C= DrawTrSurf::GetCurve(a[1]); |
| 312 | if (C.IsNull()) return 2; |
| 313 | GeomAdaptor_Curve acur(C); |
| 314 | theAlg.Init(S, acur, tol); |
| 315 | |
| 316 | for (; theAlg.More(); theAlg.Next()) { |
| 317 | curp=theAlg.Pnt(); |
| 318 | TopoDS_Vertex aV; |
| 319 | |
| 320 | aB.MakeVertex(aV, curp, 0); |
| 321 | aB.Add(aComp, aV); |
| 322 | nbpi++; |
| 323 | di<<"Point "<<nbpi<<" : "<<curp.X()<<" "<<curp.Y()<<" "<<curp.Z()<<"\n"; |
| 324 | char name[64]; |
| 325 | char* temp = name; // pour portage WNT |
| 326 | Sprintf(temp, "%s_%d", "brics", nbpi); |
| 327 | DrawTrSurf::Set(temp, curp); |
| 328 | } |
| 329 | } |
| 330 | else { |
| 331 | theAlg.Load(S,tol ); |
| 332 | for (Standard_Integer il = 1; il<indshape ; il++) |
| 333 | { |
| 334 | Handle(Geom_Curve) hl= DrawTrSurf::GetCurve(a[il]); |
| 335 | if (!hl.IsNull()) { |
| 336 | theAlg.Init(hl); |
| 337 | for (; theAlg.More(); theAlg.Next()) { |
| 338 | curp=theAlg.Pnt(); |
| 339 | nbpi++; |
| 340 | TopoDS_Vertex aV; |
| 341 | aB.MakeVertex(aV, curp, 0); |
| 342 | aB.Add(aComp, aV); |
| 343 | di<<"Point "<<nbpi<<" : "<<curp.X()<<" "<<curp.Y()<<" "<<curp.Z()<<"\n"; |
| 344 | char name[64]; |
| 345 | char* temp = name; // pour portage WNT |
| 346 | Sprintf(temp, "%s_%d", "brics", nbpi); |
| 347 | DrawTrSurf::Set(temp, curp); |
| 348 | } |
| 349 | } |
| 350 | } |
| 351 | } |
| 352 | if(!nbpi) |
| 353 | di<<"Points of intersections are not found\n"; |
| 354 | if(indshape < n-1) |
| 355 | DBRep::Set(a[n-1], aComp); |
| 356 | //POP pour NT |
| 357 | return 0; |
| 358 | } |
| 359 | //======================================================================= |
| 360 | //function : MakeBoss |
| 361 | //purpose : |
| 362 | //======================================================================= |
| 363 | Standard_Integer MakeBoss(Draw_Interpretor& , Standard_Integer , const char** a) |
| 364 | { |
| 365 | TopoDS_Shape myS = DBRep::Get( a[2] ); |
| 366 | |
| 367 | TopoDS_Shape myBasis = DBRep::Get( a[3] ) ; |
| 368 | |
| 369 | Standard_Real ang = -0.05235987901687622; |
| 370 | |
| 371 | |
| 372 | TopoDS_Face basis = TopoDS::Face(myBasis); |
| 373 | |
| 374 | BRepFeat_MakeDPrism DPRISM(myS, basis, basis, ang, 1, Standard_True); |
| 375 | |
| 376 | TopoDS_Shape myFaceOnShape; |
| 377 | gp_Pnt Pnt(0.0, 0.0, 50.0); |
| 378 | gp_Dir Dir(-0.0, -0.0, -1.0); |
| 379 | gp_Ax1 ax(Pnt, Dir); |
| 380 | |
| 381 | myFaceOnShape = NextFaceForPrism(myS, myBasis, ax); |
| 382 | |
| 383 | DPRISM.Perform (myFaceOnShape); |
| 384 | DPRISM.Build(); |
| 385 | |
| 386 | if( DPRISM.IsDone() ) DBRep::Set( a[1], DPRISM.Shape() ); |
| 387 | |
| 388 | return 0; |
| 389 | } |
| 390 | //======================================================================= |
| 391 | //function : MakeShell |
| 392 | //purpose : |
| 393 | //======================================================================= |
| 394 | Standard_Integer MakeShell(Draw_Interpretor& , Standard_Integer , const char** a) |
| 395 | { |
| 396 | |
| 397 | TopoDS_Shape aShape = DBRep::Get( a[1] ); |
| 398 | TopTools_ListOfShape Lst; |
| 399 | TopExp_Explorer Exp(aShape, TopAbs_FACE); |
| 400 | TopoDS_Shape InputShape(DBRep::Get( a[2] )); |
| 401 | TopoDS_Face F = TopoDS::Face(InputShape); |
| 402 | // TopoDS_Face F = TopoDS::Face(DBRep::Get( a[2] )); |
| 403 | |
| 404 | Standard_Real Off = -Draw::Atof( a[3] ); |
| 405 | |
| 406 | BRepOffset_MakeOffset Offset; |
| 407 | |
| 408 | Offset.Initialize( aShape, Off, 1.0e-3, BRepOffset_Skin, |
| 409 | Standard_True , Standard_False , GeomAbs_Arc ); |
| 410 | Offset.AddFace( F ); |
| 411 | Offset.MakeThickSolid(); |
| 412 | |
| 413 | if( Offset.IsDone() ) { |
| 414 | // SaveShape::Save(Offset.Shape(), "ss"); |
| 415 | DBRep::Set( a[1], Offset.Shape() ); |
| 416 | } |
| 417 | return 0; |
| 418 | } |
| 419 | //======================================================================= |
| 420 | //function : xbounds |
| 421 | //purpose : |
| 422 | //======================================================================= |
| 423 | Standard_Integer xbounds(Draw_Interpretor& di, Standard_Integer n, const char** a) |
| 424 | { |
| 425 | if (n<2) { |
| 426 | di << "Usage : " << a[0] << " face\n"; |
| 427 | return 0; |
| 428 | } |
| 429 | // |
| 430 | |
| 431 | Standard_Real aUMin, aUMax, aVMin, aVMax; |
| 432 | TopoDS_Shape aS; |
| 433 | TopoDS_Face aF; |
| 434 | // |
| 435 | aS=DBRep::Get(a[1]); |
| 436 | if (aS.IsNull()) { |
| 437 | di << " null shapes is not allowed here\n"; |
| 438 | return 0; |
| 439 | } |
| 440 | if (aS.ShapeType()!=TopAbs_FACE) { |
| 441 | di << " shape" << a[1] <<" must be a face\n"; |
| 442 | return 0; |
| 443 | } |
| 444 | // |
| 445 | aF=*((TopoDS_Face*)&aS); |
| 446 | // |
| 447 | BRepTools::UVBounds(aF, aUMin, aUMax, aVMin, aVMax); |
| 448 | // |
| 449 | TCollection_AsciiString aStr; |
| 450 | TCollection_AsciiString sUMin(aUMin); |
| 451 | TCollection_AsciiString sUMax(aUMax); |
| 452 | TCollection_AsciiString sVMin(aVMin); |
| 453 | TCollection_AsciiString sVMax(aVMax); |
| 454 | // |
| 455 | aStr=aStr+sUMin + "\n"; |
| 456 | aStr=aStr+sUMax + "\n"; |
| 457 | aStr=aStr+sVMin + "\n"; |
| 458 | aStr=aStr+sVMax + "\n"; |
| 459 | di <<aStr.ToCString(); |
| 460 | // |
| 461 | return 0; |
| 462 | } |
| 463 | //======================================================================= |
| 464 | //function : xclassify |
| 465 | //purpose : |
| 466 | //======================================================================= |
| 467 | Standard_Integer xclassify (Draw_Interpretor& aDI, Standard_Integer n, const char** a) |
| 468 | { |
| 469 | if (n < 2) { |
| 470 | aDI<<" use xclassify Solid [Tolerance=1.e-7]\n"; |
| 471 | return 1; |
| 472 | } |
| 473 | |
| 474 | TopoDS_Shape aS = DBRep::Get(a[1]); |
| 475 | if (aS.IsNull()) { |
| 476 | aDI<<" Null Shape is not allowed here\n"; |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | if (aS.ShapeType()!=TopAbs_SOLID) { |
| 481 | aDI<< " Shape type must be SOLID\n"; |
| 482 | return 0; |
| 483 | } |
| 484 | // |
| 485 | Standard_Real aTol=1.e-7; |
| 486 | TopAbs_State aState = TopAbs_UNKNOWN; |
| 487 | // |
| 488 | aTol=1.e-7; |
| 489 | if (n==3) { |
| 490 | aTol=Draw::Atof(a[2]); |
| 491 | } |
| 492 | // |
| 493 | BRepClass3d_SolidClassifier aSC(aS); |
| 494 | aSC.PerformInfinitePoint(aTol); |
| 495 | |
| 496 | aState = aSC.State(); |
| 497 | PrintState(aDI, aState); |
| 498 | // |
| 499 | return 0; |
| 500 | } |
| 501 | //======================================================================= |
| 502 | //function : PrintState |
| 503 | //purpose : |
| 504 | //======================================================================= |
| 505 | void PrintState (Draw_Interpretor& aDI, |
| 506 | const TopAbs_State& aState) |
| 507 | { |
| 508 | aDI<<"state is: "; |
| 509 | switch (aState) { |
| 510 | case TopAbs_IN: |
| 511 | aDI<<"IN\n"; |
| 512 | break; |
| 513 | case TopAbs_OUT: |
| 514 | aDI<<"OUT\n"; |
| 515 | break; |
| 516 | case TopAbs_ON: |
| 517 | aDI<<"ON\n"; |
| 518 | break; |
| 519 | case TopAbs_UNKNOWN: |
| 520 | default: |
| 521 | aDI<<"UNKNOWN\n"; |
| 522 | break; |
| 523 | } |
| 524 | } |
| 525 | //======================================================================= |
| 526 | //function : NextFaceForPrism |
| 527 | //purpose : Search a face from <shape> which intersects with a line of |
| 528 | // direction <ax1> and location a point of <basis>. |
| 529 | //======================================================================= |
| 530 | TopoDS_Face NextFaceForPrism (const TopoDS_Shape& shape, |
| 531 | const TopoDS_Shape& basis, |
| 532 | const gp_Ax1& ax1) |
| 533 | { |
| 534 | TopoDS_Face nextFace; |
| 535 | |
| 536 | TColgp_SequenceOfPnt seqPnts; |
| 537 | SampleEdges(basis, seqPnts); |
| 538 | |
| 539 | for (Standard_Integer i=1; i<=seqPnts.Length(); i++) { |
| 540 | const gp_Pnt& pt = seqPnts(i); |
| 541 | // find a axis through a face |
| 542 | gp_Dir dir = ax1.Direction(); |
| 543 | gp_Ax1 ax1b(pt, dir); |
| 544 | |
| 545 | LocOpe_CSIntersector ASI(shape); |
| 546 | LocOpe_SequenceOfLin slin; |
| 547 | slin.Append(ax1b); |
| 548 | ASI.Perform(slin); |
| 549 | |
| 550 | if (ASI.IsDone()) { |
| 551 | Standard_Integer no=1, IndFrom, IndTo; |
| 552 | TopAbs_Orientation theOr; |
| 553 | Standard_Real min = 1.e-04, Tol = -Precision::Confusion(); |
| 554 | if (ASI.LocalizeAfter (no, min, Tol, theOr, IndFrom, IndTo)) { |
| 555 | nextFace = ASI.Point(no, IndFrom).Face(); |
| 556 | break; |
| 557 | } |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | return nextFace; |
| 562 | } |
| 563 | |
| 564 | |
| 565 | //======================================================================= |
| 566 | //function : SampleEdges |
| 567 | //purpose : Sampling of <theShape>. |
| 568 | //design : Collect the vertices and points on the edges |
| 569 | //======================================================================= |
| 570 | void SampleEdges (const TopoDS_Shape& theShape, TColgp_SequenceOfPnt& theSeq) |
| 571 | { |
| 572 | |
| 573 | theSeq.Clear(); |
| 574 | |
| 575 | |
| 576 | TopTools_MapOfShape theMap; |
| 577 | TopExp_Explorer exp; |
| 578 | |
| 579 | // Adds all vertices/pnt |
| 580 | for (exp.Init(theShape,TopAbs_VERTEX); exp.More(); exp.Next()) { |
| 581 | if (theMap.Add(exp.Current())) { |
| 582 | theSeq.Append (BRep_Tool::Pnt(TopoDS::Vertex(exp.Current()))); |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | // Computes points on edge, but does not take the extremities into account |
| 587 | Standard_Integer NECHANT = 5; |
| 588 | Handle(Geom_Curve) C; |
| 589 | Standard_Real f,l,prm; |
| 590 | for (exp.Init (theShape,TopAbs_EDGE); exp.More(); exp.Next()) { |
| 591 | const TopoDS_Edge& edg = TopoDS::Edge(exp.Current()); |
| 592 | if (theMap.Add(edg)) { |
| 593 | if (!BRep_Tool::Degenerated(edg)) { |
| 594 | C = BRep_Tool::Curve(edg,f,l); |
| 595 | for (Standard_Integer i=1; i < NECHANT; i++) { |
| 596 | prm = ((NECHANT-i)*f+i*l)/NECHANT; |
| 597 | theSeq.Append (C->Value(prm)); |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | } |
| 602 | } |
| 603 | |