1 // Copyright (C) 2013-2016 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #include "CurveCreator_Utils.hxx"
21 #include "CurveCreator.hxx"
22 #include "CurveCreator_Curve.hxx"
23 #include "CurveCreator_Section.hxx"
24 #include "CurveCreator_UtilsICurve.hxx"
26 #include <Basics_OCCTVersion.hxx>
28 #include <GEOMUtils.hxx>
33 #include <TopoDS_Vertex.hxx>
34 #include <TopoDS_Wire.hxx>
35 #include <TopoDS_Edge.hxx>
36 #include <TopoDS_Compound.hxx>
38 #include <AIS_ListOfInteractive.hxx>
39 #include <AIS_ListIteratorOfListOfInteractive.hxx>
40 #include <AIS_Shape.hxx>
41 #include <AIS_Line.hxx>
42 #include <AIS_Trihedron.hxx>
43 #include <AIS_LocalContext.hxx>
45 #include <Geom_Point.hxx>
46 #include <Geom_BSplineCurve.hxx>
47 #include <Geom_Line.hxx>
48 #include <Geom_Curve.hxx>
49 #include <Geom_TrimmedCurve.hxx>
52 #include <TopExp_Explorer.hxx>
53 #include <TopTools_ListIteratorOfListOfShape.hxx>
54 #include <GeomAPI_ProjectPointOnCurve.hxx>
55 #include <SelectMgr_EntityOwner.hxx>
56 #include <SelectMgr_Selection.hxx>
57 #include <Select3D_SensitivePoint.hxx>
59 #include <BRep_Tool.hxx>
60 #include <BRep_Builder.hxx>
61 #include <BRepBuilderAPI_MakeVertex.hxx>
62 #include <BRepBuilderAPI_MakeEdge.hxx>
63 #include <BRepBuilderAPI_MakeWire.hxx>
64 #include <BRepTools_WireExplorer.hxx>
66 #include <TColgp_HArray1OfPnt.hxx>
67 #include <TColStd_HArray1OfBoolean.hxx>
68 #include <TColStd_Array1OfReal.hxx>
69 #include <TColgp_Array1OfVec.hxx>
70 #include <GeomAPI_Interpolate.hxx>
72 #include <ProjLib.hxx>
77 #include "CurveCreator_ICurve.hxx"
79 const double LOCAL_SELECTION_TOLERANCE = 0.0001;
80 const int SCENE_PIXEL_PROJECTION_TOLERANCE = 10;
81 const int SCENE_PIXEL_POINT_TOLERANCE = 5;
89 * This static function returns the curve of original type from the edge.
91 * \param theEdge the edge
92 * \return the curve of original type. Can be null handle.
94 static Handle(Geom_Curve) GetCurve(const TopoDS_Edge &theEdge)
96 Handle(Geom_Curve) aResult;
98 if (theEdge.IsNull()) {
105 aResult = BRep_Tool::Curve(theEdge, aF, aL);
107 if (aResult.IsNull()) {
111 // Get the curve of original type
112 Handle(Standard_Type) aType = aResult->DynamicType();
114 while (aType == STANDARD_TYPE(Geom_TrimmedCurve)) {
115 Handle(Geom_TrimmedCurve) aTrCurve =
116 Handle(Geom_TrimmedCurve)::DownCast(aResult);
118 aResult = aTrCurve->BasisCurve();
119 aType = aResult->DynamicType();
125 //=======================================================================
126 // function : ConvertClickToPoint()
127 // purpose : Returns the point clicked in 3D view
128 //=======================================================================
129 void CurveCreator_Utils::ConvertPointToClick( const gp_Pnt& thePoint,
130 Handle(V3d_View) theView,
133 theView->Convert(thePoint.X(), thePoint.Y(), thePoint.Z(), x, y );
137 //=======================================================================
138 // function : ConvertClickToPoint()
139 // purpose : Returns the point clicked in 3D view
140 //=======================================================================
141 gp_Pnt CurveCreator_Utils::ConvertClickToPoint( int x, int y, Handle(V3d_View) aView )
143 // the 3D point, that is a projection of the pixels to the XYZ view plane
144 //return GEOMUtils::ConvertClickToPoint( x, y, aView );
146 // we need the projection to the XOY plane
147 // 1. find a point in the plane of the eye and the normal to the plane
148 Standard_Real X, Y, Z;
149 Quantity_Parameter Vx, Vy, Vz;
150 aView->ConvertWithProj( x, y, X, Y, Z, Vx, Vy, Vz );
152 // 2. build a ray from the point by the normal to the XOY plane and intersect it
153 // The ray equation is the following : p(x,y,z) = p0(x,y,z) + t*V(x,y,z)
154 // X,Y,Z - defines p0(x,y,z), Vx,Vy,Vz - defines V(x,y,z)
155 // p(x,y,z) - is a searched point, t - should to be calculated by the condition of XOY plane
156 // The system of equations is the following:
157 // p(x) = p0(x)+t*V(x)
158 // p(y) = p0(y)+t*V(y)
159 // p(z) = p0(z)+t*V(z)
162 Standard_Real aXp, aYp, aZp;
163 //It is not possible to use Precision::Confusion(), because it is e-0.8, but V is sometimes e-6
164 Standard_Real aPrec = LOCAL_SELECTION_TOLERANCE;
165 if ( fabs( Vz ) > aPrec ) {
166 Standard_Real aT = -Z/Vz;
171 else { // Vz = 0 - the eyed plane is orthogonal to Z plane - XOZ, or YOZ
173 if ( fabs( Vy ) < aPrec ) // Vy = 0 - the YOZ plane
175 else if ( fabs( Vx ) < aPrec ) // Vx = 0 - the XOZ plane
178 /*std::cout << "ConvertClickToPoint: " << std::endl
179 << "XYZ1 = (" << X << ", " << Y << ", " << Z << "); " << std::endl
180 << "Vxyz = (" << Vx << ", " << Vy << ", " << Vz << "); " << std::endl
181 << "Resp = (" << aXp << ", " << aYp << ", " << aZp << "); " << std::endl;*/
183 gp_Pnt ResultPoint( aXp, aYp, aZp );
187 //=======================================================================
188 // function : constructBSpline
190 //=======================================================================
191 bool CurveCreator_Utils::constructBSpline(
192 const Handle(TColgp_HArray1OfPnt)& thePoints,
193 const Standard_Boolean theIsClosed,
194 Handle(Geom_BSplineCurve)& theBSpline)
196 const int aPointCount = thePoints->Length();
197 if (aPointCount <= 1)
202 // Calculate the tangents.
203 TColgp_Array1OfVec aTangents(1, aPointCount);
204 Handle(TColStd_HArray1OfBoolean) aTangentFlags =
205 new TColStd_HArray1OfBoolean(1, aPointCount);
206 GeomAPI_Interpolate aInterpolator(thePoints, theIsClosed, 0);
207 if (aPointCount == 2)
209 aTangentFlags->SetValue(1, Standard_False);
210 aTangentFlags->SetValue(2, Standard_False);
214 for (Standard_Integer aPN = 1; aPN <= aPointCount; ++aPN)
217 if (aPN != 1 || theIsClosed)
219 const Standard_Integer aPN1 = (aPN != 1) ? (aPN - 1) : aPointCount;
220 aTangent = gp_Vec(thePoints->Value(aPN1),
221 thePoints->Value(aPN)).Normalized();
223 if (aPN < aPointCount || theIsClosed)
225 const Standard_Integer aPN2 = (aPN != aPointCount) ? (aPN + 1) : 1;
226 const gp_Vec aTangent2 = aTangent +
227 gp_Vec(thePoints->Value(aPN), thePoints->Value(aPN2)).Normalized();
228 if (aTangent2.SquareMagnitude() >= Precision::SquareConfusion())
230 aTangent = aTangent2.Normalized();
234 aTangent = -aTangent;
237 aTangents.SetValue(aPN, aTangent);
238 aTangentFlags->SetValue(aPN, Standard_True);
243 aInterpolator.Load(aTangents, aTangentFlags, Standard_False);
244 aInterpolator.Perform();
245 const bool aResult = (aInterpolator.IsDone() == Standard_True);
248 theBSpline = aInterpolator.Curve();
253 //=======================================================================
254 // function : constructWire
256 //=======================================================================
257 TopoDS_Wire CurveCreator_Utils::ConstructWire(
258 Handle(TColgp_HArray1OfPnt) thePoints,
259 const bool theIsPolyline,
260 const bool theIsClosed)
263 BRep_Builder aBuilder;
264 aBuilder.MakeWire(aWire);
265 const int aPointCount = thePoints->Length();
268 const TopoDS_Vertex aFirstVertex =
269 BRepBuilderAPI_MakeVertex(thePoints->Value(1));
270 TopoDS_Vertex aVertex = aFirstVertex;
271 for (Standard_Integer aPN = 1; aPN < aPointCount; ++aPN)
273 const TopoDS_Vertex aVertex2 =
274 BRepBuilderAPI_MakeVertex(thePoints->Value(aPN + 1));
275 aBuilder.Add(aWire, BRepBuilderAPI_MakeEdge(aVertex, aVertex2));
278 if (theIsClosed && aPointCount > 1)
280 aBuilder.Add(aWire, BRepBuilderAPI_MakeEdge(aVertex, aFirstVertex));
285 Handle(Geom_BSplineCurve) aBSpline;
286 if (constructBSpline(thePoints, theIsClosed, aBSpline))
288 aBuilder.Add(aWire, BRepBuilderAPI_MakeEdge(aBSpline));
294 //=======================================================================
295 // function : constructShape
297 //=======================================================================
298 void CurveCreator_Utils::constructShape(
299 const CurveCreator_ICurve* theCurve, TopoDS_Shape& theShape)
301 BRep_Builder aBuilder;
302 TopoDS_Compound aShape;
303 aBuilder.MakeCompound(aShape);
304 const int aSectionCount = theCurve->getNbSections();
305 for (int aSectionI = 0; aSectionI < aSectionCount; ++aSectionI)
307 const int aTmpPointCount = theCurve->getNbPoints(aSectionI);
308 if (aTmpPointCount == 0)
313 // Get the different points.
314 const CurveCreator_ISection* aSection = theCurve->getSection(aSectionI);
315 Handle(TColgp_HArray1OfPnt) aPoints;
316 aSection->GetDifferentPoints(theCurve->getDimension(), aPoints);
317 const int aPointCount = aPoints->Length();
318 const bool isClosed = theCurve->isClosed(aSectionI);
320 // Add the vertices to the shape.
321 for (Standard_Integer aPN = 1; aPN <= aPointCount; ++aPN)
323 aBuilder.Add(aShape, BRepBuilderAPI_MakeVertex(aPoints->Value(aPN)));
326 // Add the wire to the shape.
327 const bool isPolyline =
328 (theCurve->getSectionType(aSectionI) == CurveCreator::Polyline);
329 const TopoDS_Wire aWire = ConstructWire(aPoints, isPolyline, isClosed);
332 aBuilder.Add(aShape, aWire);
339 * This is an intermediate structure for curve construction.
343 Section3D() : myIsClosed(false), myIsBSpline(false)
348 Handle(TColgp_HArray1OfPnt) myPoints;
351 //=======================================================================
352 // function : constructCurve
354 //=======================================================================
355 bool CurveCreator_Utils::constructCurve
356 (const TopoDS_Shape theShape,
357 CurveCreator_Curve *theCurve,
360 if (theShape.IsNull()) {
364 // Collect wires or vertices from shape.
365 TopTools_ListOfShape aWOrV;
366 TopAbs_ShapeEnum aType = theShape.ShapeType();
368 if (aType == TopAbs_WIRE || aType == TopAbs_VERTEX) {
369 aWOrV.Append(theShape);
370 } else if (aType == TopAbs_COMPOUND) {
371 TopoDS_Iterator aShIter(theShape);
373 for (; aShIter.More(); aShIter.Next()) {
374 const TopoDS_Shape &aSubShape = aShIter.Value();
376 aType = aSubShape.ShapeType();
378 if (aType == TopAbs_WIRE || aType == TopAbs_VERTEX) {
379 aWOrV.Append(aSubShape);
381 // Only subshapes of types wire or vertex are supported.
386 // Only wire (vertex) or compound of wires (vertices) are supported.
390 // Treat each wire or vertex. Get points, compute the working plane.
392 Standard_Integer aPlaneStatus = PLN_FREE;
393 TopTools_ListIteratorOfListOfShape anIter(aWOrV);
394 std::list<Section3D> aListSec;
396 for (; anIter.More(); anIter.Next()) {
399 aSec3D.myPoints = CurveCreator_Utils::getPoints
400 (anIter.Value(), aSec3D.myIsClosed, aSec3D.myIsBSpline);
402 if (aSec3D.myPoints.IsNull()) {
406 aListSec.push_back(aSec3D);
408 if (aPlaneStatus != PLN_FIXED) {
410 CurveCreator_Utils::FindPlane(aSec3D.myPoints, aPlane, aPlaneStatus);
414 // Check if it is possible to change a computed coordinate system by
415 // XOY, XOZ or YOZ or parallel to them.
416 gp_Pnt aO(0., 0., 0.);
417 gp_Dir aNDir(0., 0., 1.);
418 gp_Dir aXDir(1., 0., 0.);
420 Standard_Real aTolAng = Precision::Confusion(); // Angular() is too small.
422 switch (aPlaneStatus) {
425 // Change the location.
426 aO.SetZ(aPlane.Location().Z());
427 anAxis.SetLocation(aO);
428 aPlane.SetPosition(anAxis);
433 // Fixed origin + OX axis
434 const gp_Dir &aPlnX = aPlane.Position().XDirection();
436 if (Abs(aPlnX.Z()) <= aTolAng) {
437 // Make a coordinate system parallel to XOY.
438 aO.SetZ(aPlane.Location().Z());
439 anAxis.SetLocation(aO);
440 aPlane.SetPosition(anAxis);
441 } else if (Abs(aPlnX.Y()) <= aTolAng) {
442 // Make a coordinate system parallel to XOZ.
443 aO.SetY(aPlane.Location().Y());
444 aNDir.SetCoord(0., 1., 0.);
445 aXDir.SetCoord(0., 0., 1.);
446 anAxis = gp_Ax3(aO, aNDir, aXDir);
447 aPlane.SetPosition(anAxis);
448 } else if (Abs(aPlnX.X()) <= aTolAng) {
449 // Make a coordinate system parallel to YOZ.
450 aO.SetX(aPlane.Location().X());
451 aNDir.SetCoord(1., 0., 0.);
452 aXDir.SetCoord(0., 1., 0.);
453 anAxis = gp_Ax3(aO, aNDir, aXDir);
454 aPlane.SetPosition(anAxis);
460 const gp_Dir &aPlnN = aPlane.Position().Direction();
461 gp_Dir aYDir(0., 1., 0.);
463 if (aPlnN.IsParallel(aNDir, aTolAng)) {
464 // Make a coordinate system parallel to XOY.
465 aO.SetZ(aPlane.Location().Z());
466 anAxis.SetLocation(aO);
467 aPlane.SetPosition(anAxis);
468 } else if (aPlnN.IsParallel(aYDir, aTolAng)) {
469 // Make a coordinate system parallel to XOZ.
470 aO.SetY(aPlane.Location().Y());
471 aNDir.SetCoord(0., 1., 0.);
472 aXDir.SetCoord(0., 0., 1.);
473 anAxis = gp_Ax3(aO, aNDir, aXDir);
474 aPlane.SetPosition(anAxis);
475 } else if (aPlnN.IsParallel(aXDir, aTolAng)) {
476 // Make a coordinate system parallel to YOZ.
477 aO.SetX(aPlane.Location().X());
478 aNDir.SetCoord(1., 0., 0.);
479 aXDir.SetCoord(0., 1., 0.);
480 anAxis = gp_Ax3(aO, aNDir, aXDir);
481 aPlane.SetPosition(anAxis);
488 aPlane.SetPosition(anAxis);
492 // Compute 2d points.
493 std::list<Section3D>::const_iterator aSecIt = aListSec.begin();
494 Standard_Real aTolConf2 =
495 Precision::Confusion()*Precision::Confusion();
499 for (; aSecIt != aListSec.end(); ++aSecIt) {
501 CurveCreator::Coordinates aCoords;
503 for (i = aSecIt->myPoints->Lower(); i <= aSecIt->myPoints->Upper(); ++i) {
504 const gp_Pnt &aPnt = aSecIt->myPoints->Value(i);
506 if (aPlane.SquareDistance(aPnt) > aTolConf2) {
507 // The point doesn't lie on the plane.
511 ElSLib::Parameters(aPlane, aPnt, aX, aY);
512 aCoords.push_back(aX);
513 aCoords.push_back(aY);
516 // Add a new section to the curve.
517 const std::string aSecName =
518 CurveCreator_UtilsICurve::getUniqSectionName(theCurve);
519 const CurveCreator::SectionType aSecType = aSecIt->myIsBSpline ?
520 CurveCreator::Spline : CurveCreator::Polyline;
522 theCurve->addSectionInternal(aSecName, aSecType,
523 aSecIt->myIsClosed, aCoords);
526 // Set the local coordinate system.
527 theLocalCS = aPlane.Position();
532 class CompareSectionToPoint
535 CompareSectionToPoint( const int theISection = -1, const int theIPoint = -1 )
536 : mySectionId( theISection ), myPointId( theIPoint ) {};
537 ~CompareSectionToPoint() {}
539 bool operator < ( const CompareSectionToPoint& theOther ) const
541 bool isLess = mySectionId < theOther.mySectionId;
542 if ( !isLess && mySectionId == theOther.mySectionId )
543 isLess = myPointId < theOther.myPointId;
553 void CurveCreator_Utils::getSelectedPoints( Handle(AIS_InteractiveContext) theContext,
554 const CurveCreator_ICurve* theCurve,
555 CurveCreator_ICurve::SectionToPointList& thePoints )
559 std::list<double> aSelectedPoints;
561 std::map<CompareSectionToPoint, int> aPointsMap;
563 CurveCreator_ICurve::SectionToPointList aPoints;
564 for ( theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected() ) {
565 TopoDS_Vertex aVertex;
566 TopoDS_Shape aShape = theContext->SelectedShape();
567 if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
568 aVertex = TopoDS::Vertex( theContext->SelectedShape() );
570 if ( aVertex.IsNull() )
572 aPnt = BRep_Tool::Pnt( aVertex );
574 CurveCreator_UtilsICurve::findSectionsToPoints( theCurve, aPnt.X(), aPnt.Y(), aPoints );
575 CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints.begin(),
576 aLast = aPoints.end();
577 CompareSectionToPoint aPoint;
578 for ( ; anIt != aLast; anIt++ ) {
579 aPoint = CompareSectionToPoint( (*anIt).first, (*anIt).second );
580 if ( aPointsMap.find( aPoint ) != aPointsMap.end() )
582 aPointsMap[aPoint] = 0;
584 thePoints.push_back( *anIt );
589 void CurveCreator_Utils::setSelectedPoints( Handle(AIS_InteractiveContext) theContext,
590 const CurveCreator_ICurve* theCurve,
591 const CurveCreator_ICurve::SectionToPointList& thePoints )
596 Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
597 if ( anAIS.IsNull() )
599 Handle(AIS_Shape) anAISShape = Handle(AIS_Shape)::DownCast( anAIS );
600 if ( anAISShape.IsNull() )
603 //ASL: we convert list of point indices to list of points coordinates
604 int aSize = thePoints.size();
605 std::vector<gp_Pnt> aPntsToSelect( aSize );
607 CurveCreator_ICurve::SectionToPointList::const_iterator
608 aPIt = thePoints.begin(), aPLast = thePoints.end();
609 CurveCreator_ICurve::SectionToPoint aSToPoint;
610 for( int i=0; aPIt != aPLast; aPIt++, i++ )
613 CurveCreator_UtilsICurve::getPoint( theCurve, aPIt->first, aPIt->second, aPntToSelect );
614 aPntsToSelect[i] = aPntToSelect;
617 theContext->ClearSelected( Standard_False );
618 //ASL: we switch off automatic highlight to improve performance of selection
619 theContext->SetAutomaticHilight( Standard_False );
621 Handle(SelectMgr_Selection) aSelection = anAISShape->Selection( AIS_Shape::SelectionMode( TopAbs_VERTEX ) );
622 for( aSelection->Init(); aSelection->More(); aSelection->Next() )
624 #if OCC_VERSION_LARGE > 0x06080100
625 const Handle(SelectMgr_SensitiveEntity) aHSenEntity = aSelection->Sensitive();
626 if( aHSenEntity.IsNull() )
628 Handle(SelectBasics_SensitiveEntity) aSenEntity = aHSenEntity->BaseSensitive();
630 Handle(SelectBasics_SensitiveEntity) aSenEntity = aSelection->Sensitive();
633 Handle(Select3D_SensitivePoint) aSenPnt = Handle(Select3D_SensitivePoint)::DownCast( aSenEntity );
635 gp_Pnt anOwnerPnt = aSenPnt->Point();
636 Handle(SelectMgr_EntityOwner) anOwner = Handle(SelectMgr_EntityOwner)::DownCast( aSenPnt->OwnerId() );
639 CurveCreator_ICurve::SectionToPointList::const_iterator anIt = thePoints.begin(),
640 aLast = thePoints.end();
641 bool isFound = false;
642 for( int i=0; i<aSize; i++ )
644 bool isIntersect = fabs( aPntsToSelect[i].X() - anOwnerPnt.X() ) < LOCAL_SELECTION_TOLERANCE &&
645 fabs( aPntsToSelect[i].Y() - anOwnerPnt.Y() ) < LOCAL_SELECTION_TOLERANCE;
648 theContext->AddOrRemoveSelected( anOwner, Standard_False );
654 //ASL: we switch on again automatic highlight (otherwise selection will not be shown)
655 // and call HilightPicked to draw selected owners
656 theContext->SetAutomaticHilight( Standard_True );
657 theContext->LocalContext()->HilightPicked( Standard_True );
660 //=======================================================================
661 // function : setLocalPointContext
662 // purpose : Open/close the viewer local context
663 //=======================================================================
664 void CurveCreator_Utils::setLocalPointContext( const CurveCreator_ICurve* theCurve,
665 Handle(AIS_InteractiveContext) theContext,
672 // Open local context if there is no one
673 if ( !theContext->HasOpenedContext() ) {
674 theContext->ClearCurrents( false );
675 theContext->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
677 // load the curve AIS object to the local context with the point selection
678 Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
679 if ( !anAIS.IsNull() )
681 if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
683 theContext->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
684 theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_VERTEX ) );
689 if ( theContext->HasOpenedContext() )
690 theContext->CloseAllContexts();
694 bool CurveCreator_Utils::pointOnObject( Handle(V3d_View) theView,
695 Handle(AIS_InteractiveObject) theObject,
696 const int theX, const int theY,
698 gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
700 bool isFullFound = false;
702 if ( theObject.IsNull() || theView.IsNull() )
704 Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
705 if ( aShape.IsNull() )
707 const TopoDS_Compound& aCompound = TopoDS::Compound( aShape->Shape() );
708 if ( aCompound.IsNull() )
711 gp_Pnt aCurPoint, aCurPoint1, aCurPoint2;
712 gp_Pnt aFoundPoint, aFoundPnt1, aFoundPnt2;
713 Standard_Real aParameter;
714 bool isFound = false;
715 int aDelta, aMinDelta = 2*SCENE_PIXEL_PROJECTION_TOLERANCE*SCENE_PIXEL_PROJECTION_TOLERANCE;
716 TopExp_Explorer anExp( aCompound, TopAbs_EDGE );
717 for ( ; anExp.More(); anExp.Next())
719 const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
720 if ( anEdge.IsNull() )
722 Standard_Real aFirst, aLast;
723 Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
724 if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
725 Handle(Geom_BSplineCurve) aBSplineCurve =
726 Handle(Geom_BSplineCurve)::DownCast( aCurve );
727 if ( !aBSplineCurve.IsNull() ) {
728 isFound = hasProjectPointOnCurve( theView, theX, theY, aBSplineCurve,
729 aParameter, aDelta );
731 aCurPoint = aBSplineCurve->Value( aParameter );
732 Standard_Integer anI1, anI2;
733 aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
734 aCurPoint1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
735 aCurPoint2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
739 else { // a curve built on a polyline edge
740 Handle(Geom_Line) aGLine = Handle(Geom_Line)::DownCast( aCurve );
741 if ( aGLine.IsNull() )
743 isFound = hasProjectPointOnCurve( theView, theX, theY, aGLine, aParameter,
746 aCurPoint = aGLine->Value( aParameter );
747 TopoDS_Vertex V1, V2;
748 TopExp::Vertices( anEdge, V1, V2, Standard_True );
749 if ( V1.IsNull() || V2.IsNull() )
751 aCurPoint1 = BRep_Tool::Pnt(V1);
752 aCurPoint2 = BRep_Tool::Pnt(V2);
754 // check that the projected point is on the bounded curve
755 gp_Vec aVec1( aCurPoint1, aCurPoint );
756 gp_Vec aVec2( aCurPoint2, aCurPoint );
757 isFound = fabs( aVec1.Angle( aVec2 ) - M_PI ) < LOCAL_SELECTION_TOLERANCE;
760 if ( isFound && aMinDelta >= aDelta ) {
764 aFoundPnt1 = aCurPoint1;
765 aFoundPnt2 = aCurPoint2;
766 aFoundPoint = aCurPoint;
770 int aX, anY, aX1, anY1, aX2, anY2;
772 CurveCreator_Utils::ConvertPointToClick( aFoundPoint, theView, aX, anY );
773 CurveCreator_Utils::ConvertPointToClick( aFoundPnt1, theView, aX1, anY1 );
774 CurveCreator_Utils::ConvertPointToClick( aFoundPnt2, theView, aX2, anY2 );
776 isFullFound = !isEqualPixels( aX, anY, aX1, anY1, SCENE_PIXEL_POINT_TOLERANCE, aDelta ) &&
777 !isEqualPixels( aX, anY, aX2, anY2, SCENE_PIXEL_POINT_TOLERANCE, aDelta );
779 thePoint = aFoundPoint;
780 thePoint1 = aFoundPnt1;
781 thePoint2 = aFoundPnt2;
787 bool CurveCreator_Utils::hasProjectPointOnCurve( Handle(V3d_View) theView,
788 const int theX, const int theY,
789 const Handle(Geom_Curve)& theCurve,
790 Standard_Real& theParameter,
793 bool isFound = false;
794 if ( theView.IsNull() )
797 gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, theView );
799 GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
800 Standard_Integer aNbPoint = aProj.NbPoints();
802 for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
803 gp_Pnt aNewPoint = aProj.Point( j );
804 theParameter = aProj.Parameter( j );
807 CurveCreator_Utils::ConvertPointToClick( aNewPoint, theView, aX, anY );
809 isFound = isEqualPixels( aX, anY, theX, theY, SCENE_PIXEL_PROJECTION_TOLERANCE, theDelta );
815 bool CurveCreator_Utils::isEqualPixels( const int theX, const int theY, const int theOtherX,
816 const int theOtherY, const double theTolerance, int& theDelta )
818 int aXDelta = abs( theX - theOtherX );
819 int anYDelta = abs( theY - theOtherY );
821 theDelta = aXDelta*aXDelta + anYDelta*anYDelta;
823 return aXDelta < theTolerance && anYDelta < theTolerance;
826 bool CurveCreator_Utils::isEqualPoints( const gp_Pnt& thePoint, const gp_Pnt& theOtherPoint )
828 return theOtherPoint.IsEqual( thePoint, LOCAL_SELECTION_TOLERANCE );
831 //=======================================================================
832 // function : getPoints
834 //=======================================================================
835 Handle(TColgp_HArray1OfPnt) CurveCreator_Utils::getPoints
836 (const TopoDS_Shape &theShape,
840 Handle(TColgp_HArray1OfPnt) aResult;
845 if (theShape.IsNull()) {
849 const TopAbs_ShapeEnum aShType = theShape.ShapeType();
851 if (aShType == TopAbs_VERTEX) {
852 // There is a single point.
853 gp_Pnt aPnt = BRep_Tool::Pnt(TopoDS::Vertex(theShape));
855 aResult = new TColgp_HArray1OfPnt(1, 1, aPnt);
858 } else if (aShType != TopAbs_WIRE) {
859 // The shape is neither a vertex nor a wire.
864 BRepTools_WireExplorer anExp(TopoDS::Wire(theShape));
867 // Empty wires are not allowed.
871 // Treat the first edge.
872 TopoDS_Edge anEdge = anExp.Current();
873 Handle(Geom_Curve) aCurve = GetCurve(anEdge);
875 if (aCurve.IsNull()) {
879 // Check the curve type.
880 Handle(Standard_Type) aType = aCurve->DynamicType();
882 if (aType == STANDARD_TYPE(Geom_BSplineCurve)) {
884 } else if (aType != STANDARD_TYPE(Geom_Line)) {
885 // The curve is neither a line or a BSpline. It is not valid.
889 // Go to the next edge.
890 TopoDS_Vertex aFirstVtx = anExp.CurrentVertex();
896 // There should be a single BSpline curve in the wire.
901 // Construct a section from poles of BSpline.
902 Handle(Geom_BSplineCurve) aBSplCurve =
903 Handle(Geom_BSplineCurve)::DownCast(aCurve);
905 // Check if the edge is valid. It should not be based on trimmed curve.
906 gp_Pnt aCP[2] = { aBSplCurve->StartPoint(), aBSplCurve->EndPoint() };
910 TopExp::Vertices(anEdge, aV[0], aV[1]);
912 for (i = 0; i < 2; i++) {
913 gp_Pnt aPnt = BRep_Tool::Pnt(aV[i]);
914 Standard_Real aTol = BRep_Tool::Tolerance(aV[i]);
916 if (!aPnt.IsEqual(aCP[i], aTol)) {
921 IsClosed = aV[0].IsSame(aV[1]) ? true : false;
923 Standard_Integer aNbPoints = aBSplCurve->NbKnots();
924 TColStd_Array1OfReal aKnots(1, aNbPoints);
925 aBSplCurve->Knots(aKnots);
927 // Don't consider the last point as it coincides with the first
931 aResult = new TColgp_HArray1OfPnt(1, aNbPoints);
932 for (i = 1; i <= aNbPoints; ++i)
933 aResult->SetValue(i, aBSplCurve->Value( aKnots.Value(i) ));
937 // This is a polyline.
938 TopTools_ListOfShape aVertices;
939 Standard_Integer aNbVtx = 1;
942 aVertices.Append(aFirstVtx);
944 for (; anExp.More(); anExp.Next(), ++aNbVtx) {
945 anEdge = anExp.Current();
946 aCurve = GetCurve(anEdge);
948 if (aCurve.IsNull()) {
952 aType = aCurve->DynamicType();
954 if (aType != STANDARD_TYPE(Geom_Line)) {
955 // The curve is not a line. It is not valid.
959 // Add the current vertex to the list.
960 aVertices.Append(anExp.CurrentVertex());
963 // Check if the section is closed.
964 TopoDS_Vertex aLastVtx = TopExp::LastVertex(anEdge, Standard_True);
966 IsClosed = aFirstVtx.IsSame(aLastVtx) ? true : false;
968 // Store a last vertex
971 aVertices.Append(aLastVtx);
975 // Fill the array of points.
976 aResult = new TColgp_HArray1OfPnt(1, aNbVtx);
979 TopTools_ListIteratorOfListOfShape aVtxIter(aVertices);
981 for (i = 1; aVtxIter.More(); aVtxIter.Next(), ++i) {
982 gp_Pnt aPnt = BRep_Tool::Pnt(TopoDS::Vertex(aVtxIter.Value()));
984 aResult->SetValue(i, aPnt);
990 //=======================================================================
991 // function : FindPlane
993 //=======================================================================
994 void CurveCreator_Utils::FindPlane
995 (const Handle(TColgp_HArray1OfPnt) &thePoints,
997 Standard_Integer &thePlnStatus)
999 if (thePoints.IsNull() || thePlnStatus == PLN_FIXED) {
1000 // The plane can't be defined or is fixed. Nothing to change.
1005 const Standard_Real aTolConf = Precision::Confusion();
1007 for (i = thePoints->Lower(); i <= thePoints->Upper(); ++i) {
1008 const gp_Pnt &aPnt = thePoints->Value(i);
1010 switch (thePlnStatus) {
1013 thePlane.SetLocation(aPnt);
1014 thePlnStatus = PLN_ORIGIN;
1018 // Fix origin + OX axis
1019 const gp_Pnt &aPlnLoc = thePlane.Location();
1021 if (!aPnt.IsEqual(aPlnLoc, aTolConf)) {
1023 gp_Dir aXDir(aPnt.XYZ().Subtracted(aPlnLoc.XYZ()));
1024 gp_Ax3 aXNorm(aPlnLoc, aXDir);
1025 gp_Ax3 aNewPlnPos(aPlnLoc, aXNorm.XDirection(), aXNorm.Direction());
1027 thePlane.SetPosition(aNewPlnPos);
1028 thePlnStatus = PLN_OX;
1035 gp_Lin aXLin(thePlane.XAxis());
1036 Standard_Real aSqrDist = aXLin.SquareDistance(aPnt);
1038 if (aSqrDist > aTolConf*aTolConf) {
1039 // Compute main axis.
1040 const gp_Pnt &aPlnLoc = thePlane.Location();
1041 gp_Dir aDir(aPnt.XYZ().Subtracted(aPlnLoc.XYZ()));
1042 gp_Ax3 aXNorm(aPlnLoc, aXLin.Direction(), aDir);
1043 gp_Ax3 aNewPlnPos(aPlnLoc, aXNorm.YDirection(),
1044 aXNorm.Direction());
1046 thePlane.SetPosition(aNewPlnPos);
1047 thePlnStatus = PLN_FIXED;