1 // Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // GEOM GEOMGUI : GUI for Geometry component
24 // File : MeasureGUI_DimensionCreateTool.cxx
25 // Author : Anton POLETAEV, Open CASCADE S.A.S.
27 #include "MeasureGUI_DimensionCreateTool.h"
33 #include <SalomeApp_Application.h>
36 #include <OCCViewer_ViewModel.h>
37 #include <OCCViewer_ViewManager.h>
38 #include <OCCViewer_ViewWindow.h>
39 #include <OCCViewer_ViewPort3d.h>
42 #include <Adaptor3d_CurveOnSurface.hxx>
43 #include <BRep_Tool.hxx>
44 #include <BRepTools.hxx>
45 #include <BRepAdaptor_Curve.hxx>
46 #include <BRepAdaptor_Surface.hxx>
47 #include <BRepBndLib.hxx>
50 #include <gp_Circ.hxx>
51 #include <gp_Sphere.hxx>
52 #include <gp_Cone.hxx>
53 #include <gp_Torus.hxx>
54 #include <gce_MakeDir.hxx>
55 #include <gce_MakePln.hxx>
56 #include <gce_MakeCirc.hxx>
57 #include <GC_MakePlane.hxx>
58 #include <Geom_Circle.hxx>
59 #include <Geom_Plane.hxx>
60 #include <Geom_ElementarySurface.hxx>
61 #include <Geom_Surface.hxx>
62 #include <Geom_ConicalSurface.hxx>
63 #include <Geom_SphericalSurface.hxx>
64 #include <Geom_ToroidalSurface.hxx>
65 #include <Geom_TrimmedCurve.hxx>
66 #include <GeomLib.hxx>
67 #include <GeomLib_Tool.hxx>
68 #include <TopoDS_Shape.hxx>
69 #include <TopoDS_Vertex.hxx>
70 #include <TopoDS_Edge.hxx>
72 #include <TopExp_Explorer.hxx>
73 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
74 #include <TopTools_ListOfShape.hxx>
75 #include <TopTools_ListIteratorOfListOfShape.hxx>
76 #include <TColgp_SequenceOfDir.hxx>
77 #include <V3d_View.hxx>
80 // plane associated with custom data
81 struct PlaneAndSegment
84 PlaneAndSegment(const gp_Pln& thePlane, const MeasureGUI_DimensionCreateTool::Segment& theSegment) : pln(thePlane), seg(theSegment) {}
85 operator gp_Pln () const { return pln; }
86 operator MeasureGUI_DimensionCreateTool::Segment () const { return seg; }
88 MeasureGUI_DimensionCreateTool::Segment seg;
91 typedef NCollection_Sequence<PlaneAndSegment> SeqOfPlnsAndSegments;
93 //=================================================================================
94 // function : Constructor
96 //=================================================================================
97 MeasureGUI_DimensionCreateTool::MeasureGUI_DimensionCreateTool()
99 Settings.DefaultFlyout = 0.0;
100 Settings.ActiveView = NULL;
103 //=================================================================================
104 // function : LengthOnEdge
106 //=================================================================================
107 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthOnEdge( const GEOM::GeomObjPtr& theMeasuredObj ) const
109 /* ---------------------------------------------------------------- *
110 * get the edge and parent shape *
111 * ---------------------------------------------------------------- */
113 TopoDS_Shape aMeasuredShape;
114 TopoDS_Shape aMainShape;
115 if ( !GEOMBase::GetShape( theMeasuredObj.operator ->(), aMeasuredShape ) )
120 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj ).get(), aMainShape ) )
125 /* ------------------------------------------------- */
126 /* check the input geometry */
127 /* ------------------------------------------------- */
129 TopoDS_Edge anEdge = TopoDS::Edge( aMeasuredShape );
131 TopoDS_Vertex aVertex1;
132 TopoDS_Vertex aVertex2;
133 TopExp::Vertices( anEdge, aVertex1, aVertex2 );
135 gp_Pnt aPnt1 = BRep_Tool::Pnt( aVertex1 );
136 gp_Pnt aPnt2 = BRep_Tool::Pnt( aVertex2 );
137 if ( aPnt1.Distance( aPnt2 ) <= Precision::Confusion() )
142 /* ------------------------- *
143 * position the dimension
144 * ------------------------- */
147 BRepBndLib::AddClose( aMainShape, aBnd );
150 TopTools_IndexedDataMapOfShapeListOfShape aRelationMap;
151 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aRelationMap );
152 const TopTools_ListOfShape& aRelatedFaces = aRelationMap.FindFromKey( anEdge );
154 gp_Vec aFaceN1( gp::Origin(), gp::Origin() );
155 gp_Vec aFaceN2( gp::Origin(), gp::Origin() );
156 gp_Vec aFaceS1( gp::Origin(), gp::Origin() );
157 gp_Vec aFaceS2( gp::Origin(), gp::Origin() );
159 gp_Pnt aMiddlePnt = gp_Pnt( ( aPnt1.XYZ() + aPnt2.XYZ() ) * 0.5 );
161 TopTools_ListIteratorOfListOfShape aFaceIt( aRelatedFaces );
163 // get face side directions
164 if ( aFaceIt.More() )
166 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
169 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
174 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
176 Standard_Real aU = 0.0, aV = 0.0;
177 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
180 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
182 aFaceN1 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
188 if ( aFaceIt.More() )
190 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
193 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
198 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
200 Standard_Real aU = 0.0, aV = 0.0;
201 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
204 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
206 aFaceN2 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
211 PositionLength( aBnd, aFaceN1, aFaceN2, aFaceS1, aFaceS2, aPnt1, aPnt2, aPln );
213 /* --------------------------------------------------------- *
214 * construct the dimension for the best selected position
215 * --------------------------------------------------------- */
217 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension( anEdge, aPln );
219 aDimension->SetFlyout( Settings.DefaultFlyout );
221 if ( !aDimension->IsValid() )
229 //=================================================================================
230 // function : LengthByPoints
232 //=================================================================================
233 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthByPoints( const GEOM::GeomObjPtr& theMeasuredObj1,
234 const GEOM::GeomObjPtr& theMeasuredObj2 ) const
236 /* ---------------------------------------------------------------- *
237 * get the edge and parent shape *
238 * ---------------------------------------------------------------- */
240 TopoDS_Shape aMeasuredShape1;
241 TopoDS_Shape aMeasuredShape2;
242 TopoDS_Shape aMainShape;
244 if ( !GEOMBase::GetShape( theMeasuredObj1.operator ->(), aMeasuredShape1 ) )
249 if ( !GEOMBase::GetShape( theMeasuredObj2.operator ->(), aMeasuredShape2 ) )
254 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj1 ).get(), aMainShape ) )
259 /* ------------------------------------------------- */
260 /* check the input geometry */
261 /* ------------------------------------------------- */
263 TopoDS_Vertex aVertex1 = TopoDS::Vertex( aMeasuredShape1 );
264 TopoDS_Vertex aVertex2 = TopoDS::Vertex( aMeasuredShape2 );
266 gp_Pnt aPnt1 = BRep_Tool::Pnt( aVertex1 );
267 gp_Pnt aPnt2 = BRep_Tool::Pnt( aVertex2 );
268 if ( aPnt1.Distance( aPnt2 ) <= Precision::Confusion() )
273 /* ------------------------- *
274 * position the dimension
275 * ------------------------- */
278 BRepBndLib::AddClose( aMainShape, aBnd );
280 // check whether the points share same edge
281 TopExp_Explorer anEdgeExp( aMainShape, TopAbs_EDGE, TopAbs_EDGE );
282 for ( ; anEdgeExp.More(); anEdgeExp.Next() )
284 TopoDS_Vertex anEdgeV1;
285 TopoDS_Vertex anEdgeV2;
286 TopExp::Vertices( TopoDS::Edge( anEdgeExp.Current() ), anEdgeV1, anEdgeV2 );
287 gp_Pnt anEdgePnt1 = BRep_Tool::Pnt( anEdgeV1 );
288 gp_Pnt anEdgePnt2 = BRep_Tool::Pnt( anEdgeV2 );
290 if ( aPnt1.Distance( anEdgePnt1 ) <= Precision::Confusion() )
292 if ( aPnt2.Distance( anEdgePnt2 ) <= Precision::Confusion() )
298 if ( aPnt2.Distance( anEdgePnt1 ) <= Precision::Confusion() )
300 if ( aPnt1.Distance( anEdgePnt2 ) <= Precision::Confusion() )
307 gp_Vec aFaceN1( gp::Origin(), gp::Origin() );
308 gp_Vec aFaceN2( gp::Origin(), gp::Origin() );
309 gp_Vec aFaceS1( gp::Origin(), gp::Origin() );
310 gp_Vec aFaceS2( gp::Origin(), gp::Origin() );
313 if ( anEdgeExp.More() )
315 TopoDS_Edge anEdge = TopoDS::Edge( anEdgeExp.Current() );
316 TopTools_IndexedDataMapOfShapeListOfShape aRelationMap;
317 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aRelationMap );
318 const TopTools_ListOfShape& aRelatedFaces = aRelationMap.FindFromKey( anEdge );
320 gp_Pnt aMiddlePnt = gp_Pnt( ( aPnt1.XYZ() + aPnt2.XYZ() ) * 0.5 );
322 TopTools_ListIteratorOfListOfShape aFaceIt( aRelatedFaces );
324 // get face side directions
325 if ( aFaceIt.More() )
327 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
330 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
335 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
337 Standard_Real aU = 0.0, aV = 0.0;
338 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
341 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
343 aFaceN1 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
349 if ( aFaceIt.More() )
351 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
354 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
359 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
361 Standard_Real aU = 0.0, aV = 0.0;
362 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
365 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
367 aFaceN2 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
373 PositionLength( aBnd, aFaceN1, aFaceN2, aFaceS1, aFaceS2, aPnt1, aPnt2, aPln );
375 /* --------------------------------------------------------- *
376 * construct the dimension for the best selected position
377 * --------------------------------------------------------- */
379 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension( aPnt1, aPnt2, aPln );
381 aDimension->SetFlyout( Settings.DefaultFlyout );
383 if ( !aDimension->IsValid() )
391 //=================================================================================
392 // function : LengthByParallelEdges
394 //=================================================================================
395 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthByParallelEdges( const GEOM::GeomObjPtr& theEdge1,
396 const GEOM::GeomObjPtr& theEdge2 ) const
398 TopoDS_Shape aFirstSh;
399 if ( !GEOMBase::GetShape( theEdge1.operator ->(), aFirstSh ) )
404 TopoDS_Shape aSecondSh;
405 if ( !GEOMBase::GetShape( theEdge2.operator ->(), aSecondSh ) )
410 TopoDS_Edge aFirstEdge = TopoDS::Edge( aFirstSh );
411 TopoDS_Edge aSecondEdge = TopoDS::Edge( aSecondSh );
413 // Build plane through three points
414 BRepAdaptor_Curve aCurve1( aFirstEdge );
415 BRepAdaptor_Curve aCurve2( aSecondEdge );
417 gp_Pnt aPnt1 = aCurve1.Value( 0.1 );
418 gp_Pnt aPnt2 = aCurve1.Value( 0.9 );
419 gp_Pnt aPnt3 = aCurve2.Value( 0.5 );
421 GC_MakePlane aMkPlane( aPnt1, aPnt2, aPnt3 );
422 Handle(Geom_Plane) aPlane = aMkPlane.Value();
424 // check whether it is possible to compute valid dimension
425 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension ( aFirstEdge, aSecondEdge, aPlane->Pln() );
427 aDimension->SetFlyout( Settings.DefaultFlyout );
429 if ( !aDimension->IsValid() )
437 //=================================================================================
438 // function : Diameter
440 //=================================================================================
441 Handle(AIS_DiameterDimension) MeasureGUI_DimensionCreateTool::Diameter( const GEOM::GeomObjPtr& theMeasuredObj ) const
443 /* ------------------------------------------------ *
444 * get the shape and its parent (if exist) *
445 * ------------------------------------------------ */
447 TopoDS_Shape aMeasuredShape;
448 TopoDS_Shape aMainShape;
449 if ( !GEOMBase::GetShape( theMeasuredObj.operator ->(), aMeasuredShape ) )
454 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj ).get(), aMainShape ) )
460 BRepBndLib::AddClose( aMainShape, aBnd );
462 /* ------------------------------------------------ *
463 * get the dimension construction arguments *
464 * ------------------------------------------------ */
466 Handle(Geom_Circle) aCircle;
468 Standard_Real aPmin = 0, aPmax = 2 * M_PI;
470 gp_Vec aFaceN( gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(0.0, 0.0, 0.0) );
472 switch ( aMeasuredShape.ShapeType() )
476 TopoDS_Face aMeasuredFace = TopoDS::Face(aMeasuredShape);
478 BRepAdaptor_Surface aSurf( aMeasuredFace );
480 Standard_Real aVmin = aSurf.FirstVParameter();
481 Standard_Real aVmax = aSurf.LastVParameter();
483 // get arguments of closed sphere
484 if ( aSurf.GetType() == GeomAbs_Sphere )
486 if ( !aSurf.IsUClosed() || !aSurf.IsVClosed() )
491 // take circle in XOY plane from sphere
492 gp_Sphere aSphere = aSurf.Sphere();
493 gp_Ax2 anAx2 = gp_Ax2( aSphere.Location(), gp::DZ() );
494 aCircle = new Geom_Circle( anAx2, aSphere.Radius() );
498 // get arguments of closed cone
499 if ( aSurf.GetType() == GeomAbs_Cone )
501 if ( !aSurf.IsUClosed() || !aSurf.IsVClosed() )
506 gp_Cone aCone = aSurf.Cone();
507 gp_Ax2 anAx2 = aCone.Position().Ax2();
508 aCircle = new Geom_Circle( anAx2, aCone.RefRadius() );
510 aFaceN = aCone.SemiAngle() > 0.0
511 ? anAx2.Axis().Direction()
512 : -anAx2.Axis().Direction();
516 // get arguments of closed torus or cylinder
517 if ( aSurf.GetType() == GeomAbs_Torus || aSurf.GetType() == GeomAbs_Cylinder )
519 if ( !aSurf.IsUClosed() || !aSurf.IsVClosed() )
524 Handle(Geom_Surface) aBasisSurface = Handle(Geom_Surface)::DownCast(
525 aSurf.Surface().Surface()->Transformed( aSurf.Trsf() ) );
527 Handle(Geom_Curve) aCurve = aBasisSurface->VIso( (aVmax + aVmin) * 0.5 );
529 if ( aCurve->IsKind( STANDARD_TYPE( Geom_Circle ) ) )
531 aPmin = aSurf.FirstUParameter();
532 aPmax = aSurf.LastUParameter();
533 aCircle = Handle(Geom_Circle)::DownCast( aCurve );
535 else if ( aCurve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve ) ) )
537 Handle(Geom_TrimmedCurve) aTrimmedCurve = Handle(Geom_TrimmedCurve)::DownCast( aCurve );
538 aPmin = aTrimmedCurve->FirstParameter();
539 aPmax = aTrimmedCurve->LastParameter();
541 aCircle = Handle(Geom_Circle)::DownCast( aTrimmedCurve );
547 // face containing edge?
548 TopExp_Explorer anExp( aMeasuredShape, TopAbs_EDGE );
554 TopoDS_Shape anExpEdge = anExp.Current();
555 if ( anExpEdge.IsNull() )
560 // only a single edge is expected
567 // do not break, go to edge checking
568 aMeasuredShape = anExpEdge;
573 TopoDS_Edge aMeasureEdge = TopoDS::Edge( aMeasuredShape );
575 BRepAdaptor_Curve aCurve(aMeasureEdge);
577 if ( aCurve.GetType() != GeomAbs_Circle )
582 aPmin = aCurve.FirstParameter();
583 aPmax = aCurve.LastParameter();
585 aCircle = new Geom_Circle( aCurve.Circle() );
587 // check if there is an parent face containing the edge
588 TopTools_IndexedDataMapOfShapeListOfShape aShapeMap;
589 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aShapeMap );
590 const TopTools_ListOfShape& aFaces = aShapeMap.FindFromKey( aMeasureEdge );
592 TopTools_ListIteratorOfListOfShape aFaceIt( aFaces );
593 for ( ; aFaceIt.More(); aFaceIt.Next() )
595 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
597 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( TopoDS::Face( aFace ) );
599 gp_Pnt aCircCenter = aCircle->Circ().Location();
600 Standard_Real aCircU = 0.0, aCircV = 0.0;
601 GeomLib_Tool::Parameters( aSurface, aCircCenter, Precision::Confusion(), aCircU, aCircV );
604 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aCircU, aCircV ), Precision::Confusion(), aNorm ) > 1 )
609 if ( aNorm.Angle( aCircle->Circ().Axis().Direction() ) > M_PI * 0.25 )
614 aFaceN = gp_Vec( aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm );
620 if ( aCircle.IsNull() )
625 ElCLib::AdjustPeriodic( 0.0, M_PI * 2, Precision::PConfusion(), aPmin, aPmax );
627 /* ------------------------- *
628 * position the dimension
629 * ------------------------- */
635 // diameter for closed circle
636 if ( Abs( ( aPmax - aPmin ) - M_PI * 2 ) <= Precision::PConfusion() )
638 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), aPnt1, aPnt2, aPln );
640 // diameter for half-closed circle
641 else if ( Abs( aPmax - aPmin ) > M_PI )
643 Standard_Real anAnchor = aPmin + ( ( aPmax - aPmin ) - M_PI ) * 0.5;
645 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), anAnchor, aPln );
647 aPnt1 = ElCLib::Value( anAnchor, aCircle->Circ() );
648 aPnt2 = ElCLib::Value( anAnchor + M_PI, aCircle->Circ() );
650 // diameter for less than half-closed circle
653 Standard_Real anAnchor = aPmin + ( aPmax - aPmin ) * 0.5;
655 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), anAnchor, aPln );
657 aPnt1 = ElCLib::Value( anAnchor, aCircle->Circ() );
658 aPnt2 = ElCLib::Value( anAnchor + M_PI, aCircle->Circ() );
661 /* --------------------------------------------------------- *
662 * construct the dimension for the best selected position
663 * --------------------------------------------------------- */
665 gp_Pnt aCircP = aCircle->Circ().Location();
666 gp_Dir aCircN = aCircle->Circ().Axis().Direction();
667 gp_Dir aCircX = gce_MakeDir( aPnt1, aPnt2 );
668 Standard_Real aCircR = aCircle->Circ().Radius();
670 // construct closed circle as base for the diameter dimension
671 Standard_Boolean isReversed = ( ( aPln.Axis().Direction() ^ aCircX ) * aCircN ) < 0.0;
673 gp_Circ aRuledCirc = gce_MakeCirc( gp_Ax2( aCircP, isReversed ? -aCircN : aCircN, aCircX ), aCircR );
675 Handle(AIS_DiameterDimension) aDimension = new AIS_DiameterDimension( aRuledCirc, aPln );
677 // if flyout is extended in tangent direction to circle, the default flyout value is used
678 // if flyout is extended in plane of circle, the zero flyout value is choosen initially
679 Standard_Real aFlyout = aCircN.IsParallel( aPln.Axis().Direction(), Precision::Angular() ) ? 0.0 : Settings.DefaultFlyout;
681 aDimension->SetFlyout(aFlyout);
683 if ( !aDimension->IsValid() )
691 //=================================================================================
692 // function : AngleByTwoEdges
694 //=================================================================================
695 Handle(AIS_AngleDimension) MeasureGUI_DimensionCreateTool::AngleByTwoEdges( const GEOM::GeomObjPtr& theEdge1,
696 const GEOM::GeomObjPtr& theEdge2 ) const
698 /* --------------------------------------------------- */
699 /* get construction and parent shapes */
700 /* --------------------------------------------------- */
702 TopoDS_Shape aShapeEdge1;
703 TopoDS_Shape aShapeMain1;
704 if ( !GEOMBase::GetShape( theEdge1.get(), aShapeEdge1 ) )
708 if ( !GEOMBase::GetShape( GetMainShape( theEdge1 ).get(), aShapeMain1 ) )
713 TopoDS_Shape aShapeEdge2;
714 TopoDS_Shape aShapeMain2;
715 if ( !GEOMBase::GetShape( theEdge2.get(), aShapeEdge2 ) )
719 if ( !GEOMBase::GetShape( GetMainShape( theEdge2 ).get(), aShapeMain2 ) )
724 /* ---------------------------------------------------- */
725 /* check construction edges */
726 /* ---------------------------------------------------- */
728 TopoDS_Edge aFirstEdge = TopoDS::Edge( aShapeEdge1 );
729 TopoDS_Edge aSecondEdge = TopoDS::Edge( aShapeEdge2 );
731 // check whether it is possible to compute dimension on the passed edges
732 Handle(AIS_AngleDimension) aDimension = new AIS_AngleDimension( aFirstEdge, aSecondEdge );
734 if ( !aDimension->IsValid() )
739 const gp_Pnt& aFirstPoint = aDimension->FirstPoint();
740 const gp_Pnt& aSecondPoint = aDimension->SecondPoint();
741 const gp_Pnt& aCenterPoint = aDimension->CenterPoint();
743 gp_Vec aVec1( aCenterPoint, aFirstPoint );
744 gp_Vec aVec2( aCenterPoint, aSecondPoint );
746 Standard_Real anAngle = aVec2.AngleWithRef( aVec1, aDimension->GetPlane().Axis().Direction() );
750 aDimension = new AIS_AngleDimension( aSecondPoint, aCenterPoint, aFirstPoint );
753 aDimension->SetFlyout( Settings.DefaultFlyout );
758 //=================================================================================
759 // function : AngleByThreePoints
761 //=================================================================================
762 Handle(AIS_AngleDimension) MeasureGUI_DimensionCreateTool::AngleByThreePoints( const GEOM::GeomObjPtr& thePoint1,
763 const GEOM::GeomObjPtr& thePoint2,
764 const GEOM::GeomObjPtr& thePoint3 ) const
766 TopoDS_Shape aFirstSh;
767 if ( !GEOMBase::GetShape( thePoint1.operator ->(), aFirstSh ) )
772 TopoDS_Shape aSecondSh;
773 if ( !GEOMBase::GetShape( thePoint2.operator ->(), aSecondSh ) )
778 TopoDS_Shape aThirdSh;
779 if ( !GEOMBase::GetShape( thePoint3.operator ->(), aThirdSh ) )
784 TopoDS_Vertex aFirstVertex = TopoDS::Vertex( aFirstSh );
785 TopoDS_Vertex aSecondVertex = TopoDS::Vertex( aSecondSh );
786 TopoDS_Vertex aThirdVertex = TopoDS::Vertex( aThirdSh );
788 gp_Pnt aPnt1 = BRep_Tool::Pnt( aFirstVertex );
789 gp_Pnt aPnt2 = BRep_Tool::Pnt( aSecondVertex );
790 gp_Pnt aPnt3 = BRep_Tool::Pnt( aThirdVertex );
792 // check whether it is possible to compute dimension on the passed points
793 Handle(AIS_AngleDimension) aDimension = new AIS_AngleDimension( aPnt1, aPnt2, aPnt3 );
795 if ( !aDimension->IsValid() )
800 aDimension->SetFlyout( Settings.DefaultFlyout );
805 //=================================================================================
806 // function : PositionLength
807 // purpose : The method provides preliminary positioning algorithm for
808 // for length dimensions measuring the length between two points.
810 // theBnd [in] - the bounding box of the main shape
811 // theFaceN1 [in] - the normal to a first face of edge length (if any)
812 // theFaceN2 [in] - the normal to a second face of edge length (if any)
813 // theFaceS1 [in] - the side vector from a first face of edge length (if any)
814 // theFaceS2 [in] - the side vector from a second face of edge length (if any)
815 // thePnt1 [in] - the first measured point
816 // thePnt2 [in] - the last measured point
817 // The method selects flyout plane to best match the current
818 // view projection. If edge length is constructed, then the flyout
819 // can go in line with sides of faces, normal to the faces, or
820 // aligned to XOY, YOZ, ZOX planes.
821 //=================================================================================
822 void MeasureGUI_DimensionCreateTool::PositionLength( const Bnd_Box& theBnd,
823 const gp_Vec& theFaceN1,
824 const gp_Vec& theFaceN2,
825 const gp_Vec& theFaceS1,
826 const gp_Vec& theFaceS2,
827 const gp_Pnt& thePnt1,
828 const gp_Pnt& thePnt2,
829 gp_Pln& thePln ) const
831 Standard_Boolean isFace1 = theFaceN1.Magnitude() > Precision::Confusion();
832 Standard_Boolean isFace2 = theFaceN2.Magnitude() > Precision::Confusion();
833 gp_Vec anAverageN( gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(0.0, 0.0, 0.0) );
835 // get average direction in case of two non-sharp angled faces
836 if ( isFace1 && isFace2 )
838 Standard_Boolean isSame = theFaceN1.IsParallel( theFaceN2, Precision::Angular() );
841 gp_Dir aReferenceDir = theFaceN1 ^ theFaceN2;
842 // compute angle between face sides [0 - 2PI]
843 Standard_Real aDirAngle = theFaceN1.AngleWithRef( theFaceN2, aReferenceDir );
846 aDirAngle = ( M_PI * 2.0 ) - aDirAngle;
849 // non-sharp angle, use averaged directio
850 if ( aDirAngle > M_PI * 0.5 )
852 anAverageN = theFaceN1 + theFaceN2;
855 if ( aDirAngle > M_PI )
857 isFace1 = Standard_False;
858 isFace2 = Standard_False;
863 Standard_Boolean isAverage = anAverageN.Magnitude() > Precision::Confusion();
865 SeqOfDirs aFlyoutDirs;
868 aFlyoutDirs.Append( theFaceN1 );
869 aFlyoutDirs.Append( theFaceS1 );
873 aFlyoutDirs.Append( theFaceN2 );
874 aFlyoutDirs.Append( theFaceS2 );
878 aFlyoutDirs.Append( anAverageN );
881 ChooseLengthFlyoutsFromBnd( aFlyoutDirs, thePnt1, thePnt2, theBnd );
883 if ( aFlyoutDirs.IsEmpty() )
888 gp_Dir aPointDir = gce_MakeDir( thePnt1, thePnt2 );
890 // make planes for dimension presentation according to flyout directions
891 SeqOfPlanes aSeqOfPlanes;
892 for ( Standard_Integer aFlyoutIt = 1; aFlyoutIt <= aFlyoutDirs.Length(); ++aFlyoutIt )
894 gp_Pln aPlane( thePnt1, aPointDir ^ aFlyoutDirs.Value( aFlyoutIt ) );
895 aSeqOfPlanes.Append( aPlane );
898 Handle(V3d_View) aView = Settings.ActiveView;
900 thePln = !aView.IsNull()
901 ? SelectPlaneForProjection( aSeqOfPlanes, aView )
902 : aSeqOfPlanes.First();
905 //=================================================================================
906 // function : PositionDiameter
907 // purpose : The method provides preliminary positioning algorithm for
908 // for diameter dimensions measuring the circle.
910 // theBnd [in] - the bounding box of the shape
911 // theFaceN [in] - the circle face normal (can be void)
912 // theCirc [in] - the measured circle
913 // thePnt1 [out] - first dimension point
914 // thePnt2 [out] - second dimension point
915 // thePln [out] - dimension flyout plane
916 // The method selects points on the circle for diameter dimension and
917 // flyout plane to best match the current view projection (if any)
918 // The points are aligned to XOY, YOZ, ZOX planes.
919 // The flyout takes into account bounding box of main shape of face normal
920 // vector. The flyouts tangetial to the circle plane are directed in
921 // accordance with the face normal (if not-null), otherwise the flyouts
922 // are turned to direct to the closest border of bounding box.
923 //=================================================================================
924 void MeasureGUI_DimensionCreateTool::PositionDiameter( const Bnd_Box& theBnd,
925 const gp_Vec& theFaceN,
926 const gp_Circ& theCirc,
929 gp_Pln& thePln ) const
931 // select list of measured segments aligned to projection planes
932 SeqOfDirs aProjectionDirs;
933 aProjectionDirs.Append( gp::DX() );
934 aProjectionDirs.Append( gp::DY() );
935 aProjectionDirs.Append( gp::DZ() );
937 SeqOfSegments aMeasureSegments = GetInPlaneSegments( theCirc, aProjectionDirs );
939 SeqOfPlnsAndSegments aSelectedPlanes;
941 // select in-circle-plane direction for flyout closest to border of bounding box
942 for ( Standard_Integer aSegmentIt = 1; aSegmentIt <= aMeasureSegments.Length(); ++aSegmentIt )
944 const Segment& aSegment = aMeasureSegments.Value(aSegmentIt);
946 Standard_Real anAnchor = ElCLib::Parameter( theCirc, aSegment.First );
948 gp_Pln aSelectedPlane;
950 PositionDiameter( theBnd, theFaceN, theCirc, anAnchor, aSelectedPlane );
952 aSelectedPlanes.Append( PlaneAndSegment( aSelectedPlane, aSegment ) );
955 Handle(V3d_View) aView = Settings.ActiveView;
957 PlaneAndSegment aChoosenParams = !aView.IsNull()
958 ? SelectPlaneForProjection( aSelectedPlanes, aView )
959 : aSelectedPlanes.First();
961 thePnt1 = ((Segment)aChoosenParams).First;
962 thePnt2 = ((Segment)aChoosenParams).Last;
963 thePln = ((gp_Pln)aChoosenParams);
966 //=================================================================================
967 // function : PositionDiameter
968 // purpose : The method provides preliminary positioning algorithm for
969 // for diameter dimensions measuring the circle. The diameter
970 // dimension is bound at anchor point on the circle.
972 // theBnd [in] the bounding box of the shape
973 // theFaceN [in] - the circle face normal (can be void)
974 // theCirc [in] - the measured circle
975 // theAnchorAt [in] - the anchoring parameter
976 // thePln [out] - dimension flyout plane
977 // The method selects flyout plane to best match the current
978 // view projection. The flyout plane can be parallel to circle,
980 //=================================================================================
981 void MeasureGUI_DimensionCreateTool::PositionDiameter( const Bnd_Box& theBnd,
982 const gp_Vec& theFaceN,
983 const gp_Circ& theCirc,
984 const Standard_Real& theAnchorAt,
985 gp_Pln& thePln ) const
987 gp_Dir aCircN = theCirc.Axis().Direction();
988 gp_Pnt aCircP = theCirc.Location();
990 // select tangent direction for flyout closest to border of bounding box
991 gp_Dir aSelectedTanDir;
992 if ( theFaceN.Magnitude() < Precision::Confusion() )
994 SeqOfDirs aTangentDirs;
995 aTangentDirs.Append( aCircN );
996 aTangentDirs.Append( -aCircN );
997 aSelectedTanDir = ChooseDirFromBnd( aTangentDirs, aCircP, theBnd );
1001 aSelectedTanDir = gp_Dir( theFaceN );
1004 gp_Pnt aPnt1 = ElCLib::Value( theAnchorAt, theCirc );
1005 gp_Pnt aPnt2 = ElCLib::Value( theAnchorAt + M_PI, theCirc );
1007 gp_Dir aSegmentDir = gce_MakeDir( aPnt1, aPnt2 );
1009 SeqOfDirs aSegmentDirs;
1010 aSegmentDirs.Append( aCircN ^ aSegmentDir );
1011 aSegmentDirs.Append( -aCircN ^ aSegmentDir );
1012 gp_Dir aSelectedSegDir = ChooseDirFromBnd( aSegmentDirs, aCircP, theBnd );
1014 gp_Pln aTangentFlyout( aCircP, aSegmentDir ^ aSelectedTanDir );
1015 gp_Pln aCoplanarFlyout( aCircP, aSegmentDir ^ aSelectedSegDir );
1017 SeqOfPlanes aSelectedPlanes;
1018 aSelectedPlanes.Append( aTangentFlyout );
1019 aSelectedPlanes.Append( aCoplanarFlyout );
1021 Handle(V3d_View) aView = Settings.ActiveView;
1023 thePln = !aView.IsNull()
1024 ? SelectPlaneForProjection( aSelectedPlanes, aView )
1025 : aSelectedPlanes.First();
1028 //=================================================================================
1029 // function : ChooseLengthFlyoutsFromBnd
1031 //=================================================================================
1032 void MeasureGUI_DimensionCreateTool::ChooseLengthFlyoutsFromBnd( SeqOfDirs& theDirs,
1033 const gp_Pnt& thePnt1,
1034 const gp_Pnt& thePnt2,
1035 const Bnd_Box& theBnd ) const
1037 // compose a list of axis-aligned planes for lying-in flyouts
1038 NCollection_Sequence<gp_Pln> anAAPlanes;
1040 // the axis-aligned planes for flyouts are built from
1041 // three points (P1, P2, and P1 translated in orthogonal
1042 // direction dx, dy, dz)
1043 gp_Dir anAxes[3] = { gp::DX(), gp::DY(), gp::DZ() };
1045 for ( int anIt = 0; anIt < 3; ++anIt )
1047 const gp_Dir& anAxisDir = anAxes[anIt];
1048 gp_Pnt aPnt3 = thePnt1.Translated( gp_Vec( anAxisDir ) );
1049 gce_MakePln aMakePlane( thePnt1, thePnt2, aPnt3 );
1050 if ( !aMakePlane.IsDone() )
1055 anAAPlanes.Append( aMakePlane.Value() );
1058 // find out what is the closest direction outside of the bounding box
1059 NCollection_Sequence<gp_Pln>::Iterator aPlaneIt( anAAPlanes );
1061 gp_Dir aPointDir = gce_MakeDir( thePnt1, thePnt2 );
1063 for ( ; aPlaneIt.More(); aPlaneIt.Next() )
1065 const gp_Pln& aPlane = aPlaneIt.Value();
1067 // transform bounding box to orthogonal coordiantes relative to
1068 // dimension points P1, P2 (x-axis) and plane direction (z-axis),
1069 // where y coordinates will correspond to flyout direction against
1070 // the dimension point line
1071 gp_Ax3 aFlyoutSpace( thePnt1, aPlane.Axis().Direction(), aPointDir );
1073 gp_Trsf aRelativeTransform;
1074 aRelativeTransform.SetTransformation( gp_Ax3(), aFlyoutSpace );
1075 Bnd_Box aRelativeBounds = theBnd.Transformed( aRelativeTransform );
1077 Standard_Real aXmin, aXmax, aYmin, aYmax, aZmin, aZmax;
1078 aRelativeBounds.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
1080 gp_Dir aPosFlyout = aPlane.Axis().Direction() ^ aPointDir;
1081 gp_Dir aNegFlyout = aPosFlyout.Reversed();
1083 // select positive or negative flyout
1084 theDirs.Append( Abs( aYmax ) < Abs( aYmin ) ? aPosFlyout : aNegFlyout );
1088 //=================================================================================
1089 // function : ChooseDirFromBnd
1090 // purpose : The method chooses the best direction from the passed list of
1091 // directions, which is closest to the bounding box border.
1093 // theCandidates [in] the list of candidate directions
1094 // thePos [in] the position from where the directions are traced
1095 // theBnd [in] the bounding box of main shape
1096 //=================================================================================
1097 gp_Dir MeasureGUI_DimensionCreateTool::ChooseDirFromBnd( const SeqOfDirs& theCandidates,
1098 const gp_Pnt& thePos,
1099 const Bnd_Box& theBnd ) const
1103 Standard_Real aBestDistance = RealLast();
1105 SeqOfDirs::Iterator anIt( theCandidates );
1106 for ( ; anIt.More(); anIt.Next() )
1108 const gp_Dir& aDir = anIt.Value();
1110 gp_Ax3 aFlyoutSpace( thePos, aDir );
1112 gp_Trsf aRelativeTransform;
1113 aRelativeTransform.SetTransformation( gp_Ax3(), aFlyoutSpace );
1114 Bnd_Box aRelativeBounds = theBnd.Transformed( aRelativeTransform );
1116 Standard_Real aXmin, aXmax, aYmin, aYmax, aZmin, aZmax;
1117 aRelativeBounds.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
1119 if ( aYmax < aBestDistance )
1122 aBestDistance = aYmax;
1129 //=================================================================================
1130 // function : SelectPlaneForProjection
1131 // purpose : Select best matching plane in current view projection
1132 //=================================================================================
1133 template <typename TPlane>
1134 TPlane MeasureGUI_DimensionCreateTool::SelectPlaneForProjection( const NCollection_Sequence<TPlane>& thePlanes,
1135 const Handle(V3d_View)& theView ) const
1137 Quantity_Parameter U[3];
1138 Quantity_Parameter N[3];
1139 theView->Up( U[0], U[1], U[2] );
1140 theView->Proj( N[0], N[1], N[2] );
1142 gp_Dir aViewN( (Standard_Real)N[0], (Standard_Real)N[1], (Standard_Real)N[2] );
1143 gp_Dir aViewU( (Standard_Real)U[0], (Standard_Real)U[1], (Standard_Real)U[2] );
1145 TPlane aBestPlane = thePlanes.First();
1147 Standard_Real aBestDotProduct = RealFirst();
1149 for ( Standard_Integer aPlnIt = 1; aPlnIt <= thePlanes.Length(); ++aPlnIt )
1151 const TPlane& aPlane = thePlanes.Value( aPlnIt );
1153 Standard_Real aDotProduct = Abs( ((gp_Pln)aPlane).Axis().Direction() * aViewN );
1155 // preferred plane is "view parallel"
1156 if ( aDotProduct <= aBestDotProduct )
1161 aBestPlane = aPlane;
1163 aBestDotProduct = aDotProduct;
1169 //=================================================================================
1170 // function : GetMainShape
1172 //=================================================================================
1173 GEOM::GeomObjPtr MeasureGUI_DimensionCreateTool::GetMainShape( const GEOM::GeomObjPtr& theShape ) const
1175 // iterate over top-level objects to search for main shape
1176 GEOM::GeomObjPtr aMainShapeIt = theShape;
1177 while ( !aMainShapeIt->IsMainShape() )
1179 aMainShapeIt = aMainShapeIt->GetMainShape();
1181 return aMainShapeIt;
1184 //=================================================================================
1185 // function : GetFaceSide
1187 //=================================================================================
1188 bool MeasureGUI_DimensionCreateTool::GetFaceSide( const TopoDS_Face& theFace, const TopoDS_Edge& theEdge, gp_Dir& theDir ) const
1190 // get correctly oriented edge from main shape
1191 TopoDS_Edge anEdgeFromFace;
1192 TopExp_Explorer anExplorer( theFace.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1193 for ( ; anExplorer.More(); anExplorer.Next() )
1195 TopoDS_Edge aCurrentEdge = TopoDS::Edge( anExplorer.Current() );
1196 if ( theEdge.IsSame( aCurrentEdge ) )
1198 anEdgeFromFace = aCurrentEdge;
1203 if ( anEdgeFromFace.IsNull() )
1208 // check out the direction of face extensions from its boundaries at the edge location
1209 // made assumption here that for any linear bounding edge the
1210 // normals are same on the whole length of that edge
1211 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( theFace );
1212 if ( aSurface.IsNull() || !aSurface->IsKind( STANDARD_TYPE(Geom_ElementarySurface) ) )
1217 BRepAdaptor_Curve aSurfCurve( anEdgeFromFace, theFace );
1218 if ( !aSurfCurve.IsCurveOnSurface() )
1223 Standard_Real aHalfRange = ( aSurfCurve.FirstParameter() + aSurfCurve.LastParameter() ) / 2.0;
1225 gp_Pnt aPoint = aSurfCurve.Value( aHalfRange );
1227 Standard_Real aPointU = 0.0;
1228 Standard_Real aPointV = 0.0;
1229 GeomLib_Tool::Parameters( aSurface, aPoint, Precision::Confusion(), aPointU, aPointV );
1232 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aPointU, aPointV ), Precision::Confusion(), aNorm ) > 1 )
1237 gp_Vec aTangent = aSurfCurve.DN( aHalfRange, 1 );
1238 if ( aTangent.Magnitude() < Precision::Confusion() )
1243 TopAbs_Orientation anEdgeOrientation = anEdgeFromFace.Orientation();
1244 if ( anEdgeOrientation == TopAbs_REVERSED )
1249 theDir = gp_Dir( aTangent ) ^ aNorm;
1253 //=================================================================================
1254 // function : GetInPlaneSegments
1255 // purpose : The method finds segments crossing the passed circle,
1256 // which lie in the passed planes.
1258 // theCirc [in] the circle to be crossed.
1259 // thePlanes [in] the projection planes crossing the circle.
1260 //=================================================================================
1261 MeasureGUI_DimensionCreateTool::SeqOfSegments
1262 MeasureGUI_DimensionCreateTool::GetInPlaneSegments( const gp_Circ& theCirc,
1263 const SeqOfDirs& thePlanes ) const
1265 SeqOfSegments aResult;
1267 gp_Pnt aCircP = theCirc.Location();
1268 gp_Dir aCircN = theCirc.Axis().Direction();
1269 Standard_Real aCircR = theCirc.Radius();
1271 SeqOfDirs::Iterator anIt( thePlanes );
1272 for ( ; anIt.More(); anIt.Next() )
1274 const gp_Dir& aDir = anIt.Value();
1276 if ( aDir.IsParallel( aCircN, Precision::Angular() ) )
1281 gp_Dir aIntDir = aDir ^ aCircN;
1283 gp_Pnt aPnt1 = gp_Pnt( aCircP.XYZ() - aIntDir.XYZ() * aCircR );
1284 gp_Pnt aPnt2 = gp_Pnt( aCircP.XYZ() + aIntDir.XYZ() * aCircR );
1286 aSegment.First = aPnt1;
1287 aSegment.Last = aPnt2;
1288 aResult.Append( aSegment );