projects / occt.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
0024023: Revamp the OCCT Handle -- downcast (automatic)
[occt.git] / src / AIS / AIS_LengthDimension.cxx
... / ...
CommitLineData
1// Created on: 1996-12-05
2// Created by: Arnaud BOUZY/Odile Olivier
3// Copyright (c) 1996-1999 Matra Datavision
4// Copyright (c) 1999-2013 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 <AIS_LengthDimension.hxx>
18
19#include <AIS.hxx>
20#include <BRep_Tool.hxx>
21#include <BRepAdaptor_Curve.hxx>
22#include <BRepLib_MakeVertex.hxx>
23#include <BRepTopAdaptor_FClass2d.hxx>
24#include <BRepTools.hxx>
25#include <ElCLib.hxx>
26#include <ElSLib.hxx>
27#include <gce_MakeDir.hxx>
28#include <gce_MakePln.hxx>
29#include <GeomAPI_ExtremaCurveCurve.hxx>
30#include <GeomAPI_ExtremaCurveSurface.hxx>
31#include <GeomAPI_ExtremaSurfaceSurface.hxx>
32#include <Geom_Curve.hxx>
33#include <Geom_Line.hxx>
34#include <TopExp.hxx>
35#include <TopExp_Explorer.hxx>
36
37
38//=======================================================================
39//function : Constructor
40//purpose : Dimension between two faces
41//=======================================================================
42AIS_LengthDimension::AIS_LengthDimension (const TopoDS_Face& theFirstFace,
43 const TopoDS_Face& theSecondFace)
44: AIS_Dimension (AIS_KOD_LENGTH)
45{
46 SetMeasuredGeometry (theFirstFace, theSecondFace);
47 SetFlyout (15.0);
48}
49
50//=======================================================================
51//function : Constructor
52//purpose : Dimension between two shape
53//=======================================================================
54AIS_LengthDimension::AIS_LengthDimension (const TopoDS_Face& theFace,
55 const TopoDS_Edge& theEdge)
56: AIS_Dimension (AIS_KOD_LENGTH)
57{
58 SetMeasuredGeometry (theFace, theEdge);
59 SetFlyout (15.0);
60}
61
62//=======================================================================
63//function : Constructor
64//purpose : Dimension between two points
65//=======================================================================
66AIS_LengthDimension::AIS_LengthDimension (const gp_Pnt& theFirstPoint,
67 const gp_Pnt& theSecondPoint,
68 const gp_Pln& thePlane)
69: AIS_Dimension (AIS_KOD_LENGTH)
70{
71 SetMeasuredGeometry (theFirstPoint, theSecondPoint, thePlane);
72 SetFlyout (15.0);
73}
74
75//=======================================================================
76//function : Constructor
77//purpose : Dimension between two shape
78//=======================================================================
79AIS_LengthDimension::AIS_LengthDimension (const TopoDS_Shape& theFirstShape,
80 const TopoDS_Shape& theSecondShape,
81 const gp_Pln& thePlane)
82: AIS_Dimension (AIS_KOD_LENGTH)
83{
84 SetCustomPlane (thePlane);
85 SetMeasuredShapes (theFirstShape, theSecondShape);
86 SetFlyout (15.0);
87}
88
89//=======================================================================
90//function : Constructor
91//purpose : Dimension of one edge
92//=======================================================================
93AIS_LengthDimension::AIS_LengthDimension (const TopoDS_Edge& theEdge,
94 const gp_Pln& thePlane)
95: AIS_Dimension (AIS_KOD_LENGTH)
96{
97 SetMeasuredGeometry (theEdge, thePlane);
98 SetFlyout (15.0);
99}
100
101//=======================================================================
102//function : SetMeasuredGeometry
103//purpose :
104//=======================================================================
105void AIS_LengthDimension::SetMeasuredGeometry (const gp_Pnt& theFirstPoint,
106 const gp_Pnt& theSecondPoint,
107 const gp_Pln& thePlane)
108{
109 myFirstPoint = theFirstPoint;
110 mySecondPoint = theSecondPoint;
111 myFirstShape = BRepLib_MakeVertex (myFirstPoint);
112 mySecondShape = BRepLib_MakeVertex (mySecondPoint);
113 myGeometryType = GeometryType_Points;
114 SetCustomPlane (thePlane);
115 myIsGeometryValid = IsValidPoints (theFirstPoint, theSecondPoint);
116
117 SetToUpdate();
118}
119
120//=======================================================================
121//function : SetMeasuredGeometry
122//purpose :
123//=======================================================================
124void AIS_LengthDimension::SetMeasuredGeometry (const TopoDS_Edge& theEdge,
125 const gp_Pln& thePlane)
126{
127 myFirstShape = theEdge;
128 mySecondShape = TopoDS_Shape();
129 myGeometryType = GeometryType_Edge;
130 SetCustomPlane (thePlane);
131 myIsGeometryValid = InitOneShapePoints (myFirstShape);
132
133 SetToUpdate();
134}
135
136//=======================================================================
137//function : SetMeasuredGeometry
138//purpose :
139//=======================================================================
140void AIS_LengthDimension::SetMeasuredGeometry (const TopoDS_Face& theFirstFace,
141 const TopoDS_Face& theSecondFace)
142{
143 SetMeasuredShapes (theFirstFace, theSecondFace);
144}
145
146//=======================================================================
147//function : SetMeasuredGeometry
148//purpose :
149//=======================================================================
150void AIS_LengthDimension::SetMeasuredGeometry (const TopoDS_Face& theFace,
151 const TopoDS_Edge& theEdge)
152{
153 SetMeasuredShapes (theFace, theEdge);
154}
155
156//=======================================================================
157//function : SetMeasuredShapes
158//purpose :
159//=======================================================================
160void AIS_LengthDimension::SetMeasuredShapes (const TopoDS_Shape& theFirstShape,
161 const TopoDS_Shape& theSecondShape)
162{
163 gp_Pln aComputedPlane;
164 Standard_Boolean isPlaneReturned = Standard_False;
165
166 myFirstShape = theFirstShape;
167 mySecondShape = theSecondShape;
168 myIsGeometryValid = InitTwoShapesPoints (myFirstShape, mySecondShape, aComputedPlane, isPlaneReturned);
169
170 if (myIsGeometryValid && !myIsPlaneCustom)
171 {
172 if (isPlaneReturned)
173 {
174 myPlane = aComputedPlane;
175 }
176 else
177 {
178 myIsGeometryValid = Standard_False;
179 }
180 }
181
182 SetToUpdate();
183}
184
185//=======================================================================
186//function : CheckPlane
187//purpose :
188//=======================================================================
189Standard_Boolean AIS_LengthDimension::CheckPlane (const gp_Pln& thePlane) const
190{
191 if (!thePlane.Contains (myFirstPoint, Precision::Confusion()) &&
192 !thePlane.Contains (mySecondPoint, Precision::Confusion()))
193 {
194 return Standard_False;
195 }
196
197 return Standard_True;
198}
199
200//=======================================================================
201//function : ComputePlane
202//purpose :
203//=======================================================================
204gp_Pln AIS_LengthDimension::ComputePlane (const gp_Dir& theAttachDir) const
205{
206 if (!IsValidPoints (myFirstPoint, mySecondPoint))
207 {
208 return gp_Pln();
209 }
210
211 gp_Pnt aThirdPoint (myFirstPoint.Translated (gp_Vec(theAttachDir)));
212 gce_MakePln aPlaneConstrustor (myFirstPoint, mySecondPoint, aThirdPoint);
213 return aPlaneConstrustor.Value();
214}
215
216//=======================================================================
217//function : GetModelUnits
218//purpose :
219//=======================================================================
220const TCollection_AsciiString& AIS_LengthDimension::GetModelUnits() const
221{
222 return myDrawer->DimLengthModelUnits();
223}
224
225//=======================================================================
226//function : GetDisplayUnits
227//purpose :
228//=======================================================================
229const TCollection_AsciiString& AIS_LengthDimension::GetDisplayUnits() const
230{
231 return myDrawer->DimLengthDisplayUnits();
232}
233
234//=======================================================================
235//function : SetModelUnits
236//purpose :
237//=======================================================================
238void AIS_LengthDimension::SetModelUnits (const TCollection_AsciiString& theUnits)
239{
240 myDrawer->SetDimLengthModelUnits (theUnits);
241}
242
243//=======================================================================
244//function : SetDisplayUnits
245//purpose :
246//=======================================================================
247void AIS_LengthDimension::SetDisplayUnits (const TCollection_AsciiString& theUnits)
248{
249 myDrawer->SetDimLengthDisplayUnits (theUnits);
250}
251
252//=======================================================================
253//function : ComputeValue
254//purpose :
255//=======================================================================
256Standard_Real AIS_LengthDimension::ComputeValue() const
257{
258 return IsValid() ? myFirstPoint.Distance (mySecondPoint) : 0.0;
259}
260
261//=======================================================================
262//function : Compute
263//purpose :
264//=======================================================================
265void AIS_LengthDimension::Compute (const Handle(PrsMgr_PresentationManager3d)& /*thePM*/,
266 const Handle(Prs3d_Presentation)& thePresentation,
267 const Standard_Integer theMode)
268{
269 thePresentation->Clear();
270 mySelectionGeom.Clear (theMode);
271
272 if (!IsValid())
273 {
274 return;
275 }
276
277 DrawLinearDimension (thePresentation, theMode, myFirstPoint, mySecondPoint);
278}
279
280//=======================================================================
281//function : ComputeFlyoutSelection
282//purpose :
283//=======================================================================
284void AIS_LengthDimension::ComputeFlyoutSelection (const Handle(SelectMgr_Selection)& theSelection,
285 const Handle(SelectMgr_EntityOwner)& theEntityOwner)
286{
287 if (!IsValid())
288 {
289 return;
290 }
291
292 ComputeLinearFlyouts (theSelection, theEntityOwner, myFirstPoint, mySecondPoint);
293}
294
295//=======================================================================
296//function : IsValidPoints
297//purpose :
298//=======================================================================
299Standard_Boolean AIS_LengthDimension::IsValidPoints (const gp_Pnt& theFirstPoint,
300 const gp_Pnt& theSecondPoint) const
301{
302 return theFirstPoint.Distance (theSecondPoint) > Precision::Confusion();
303}
304
305//=======================================================================
306//function : InitTwoEdgesLength
307//purpose : Initialization of dimension between two linear edges
308//=======================================================================
309Standard_Boolean AIS_LengthDimension::InitTwoEdgesLength (const TopoDS_Edge& theFirstEdge,
310 const TopoDS_Edge& theSecondEdge,
311 gp_Dir& theDirAttach)
312{
313 BRepAdaptor_Curve aFirstCurveAdapt (theFirstEdge);
314 if (aFirstCurveAdapt.GetType() != GeomAbs_Line)
315 {
316 return Standard_False;
317 }
318
319 BRepAdaptor_Curve aSecondCurveAdapt (theSecondEdge);
320 if (aSecondCurveAdapt.GetType() != GeomAbs_Line)
321 {
322 return Standard_False;
323 }
324
325 Handle(Geom_Curve) aFirstCurve;
326 Handle(Geom_Curve) aSecondCurve;
327
328 gp_Pnt aPoint11 (gp::Origin());
329 gp_Pnt aPoint12 (gp::Origin());
330 gp_Pnt aPoint21 (gp::Origin());
331 gp_Pnt aPoint22 (gp::Origin());
332 Standard_Boolean isFirstInfinite = Standard_False;
333 Standard_Boolean isSecondInfinite = Standard_False;
334
335 if (!AIS::ComputeGeometry (theFirstEdge, theSecondEdge,
336 aFirstCurve, aSecondCurve,
337 aPoint11, aPoint12,
338 aPoint21, aPoint22,
339 isFirstInfinite,
340 isSecondInfinite))
341 {
342 return Standard_False;
343 }
344
345 const Handle(Geom_Line) aFirstLine = Handle(Geom_Line)::DownCast (aFirstCurve);
346 const Handle(Geom_Line) aSecondLine = Handle(Geom_Line)::DownCast (aSecondCurve);
347
348 if (!aFirstLine->Lin().Direction().IsParallel (aSecondLine->Lin().Direction(),Precision::Angular()))
349 {
350 return Standard_False;
351 }
352
353 theDirAttach = aFirstLine->Lin().Direction();
354
355 gp_Pnt aPoint;
356
357 if (!isFirstInfinite)
358 {
359 if (AIS::Nearest (aSecondCurve, aPoint11, aPoint21, aPoint22, aPoint))
360 {
361 myFirstPoint = aPoint11;
362 mySecondPoint = aPoint;
363 return IsValidPoints (myFirstPoint, mySecondPoint);
364 }
365 else if (AIS::Nearest (aSecondCurve, aPoint12, aPoint21, aPoint22, aPoint))
366 {
367 myFirstPoint = aPoint12;
368 mySecondPoint = aPoint;
369 return IsValidPoints (myFirstPoint, mySecondPoint);
370 }
371 }
372
373 if (!isSecondInfinite)
374 {
375 if (AIS::Nearest (aFirstCurve, aPoint21, aPoint11, aPoint12, aPoint))
376 {
377 myFirstPoint = aPoint;
378 mySecondPoint = aPoint21;
379 return IsValidPoints (myFirstPoint, mySecondPoint);
380 }
381 if (AIS::Nearest (aFirstCurve, aPoint22, aPoint11, aPoint12, aPoint))
382 {
383 myFirstPoint = aPoint;
384 mySecondPoint = aPoint22;
385 return IsValidPoints (myFirstPoint, mySecondPoint);
386 }
387 }
388
389 GeomAPI_ExtremaCurveCurve anExtrema (aFirstCurve, aSecondCurve);
390 anExtrema.NearestPoints (myFirstPoint, mySecondPoint);
391 return IsValidPoints (myFirstPoint, mySecondPoint);
392}
393
394//=======================================================================
395//function : InitEdgeVertexLength
396//purpose : for first edge and second vertex shapes
397//=======================================================================
398Standard_Boolean AIS_LengthDimension::InitEdgeVertexLength (const TopoDS_Edge& theEdge,
399 const TopoDS_Vertex& theVertex,
400 gp_Dir& theEdgeDir,
401 Standard_Boolean isInfinite)
402{
403 gp_Pnt anEdgePoint1 (gp::Origin());
404 gp_Pnt anEdgePoint2 (gp::Origin());
405 Handle(Geom_Curve) aCurve;
406
407 if (!AIS::ComputeGeometry (theEdge, aCurve, anEdgePoint1, anEdgePoint2, isInfinite))
408 {
409 return Standard_False;
410 }
411
412 myFirstPoint = BRep_Tool::Pnt (theVertex);
413
414 Handle(Geom_Line) aGeomLine (Handle(Geom_Line)::DownCast (aCurve));
415 const gp_Lin& aLin = aGeomLine->Lin();
416
417 // Get direction of edge to build plane automatically.
418 theEdgeDir = aLin.Direction();
419
420 mySecondPoint = AIS::Nearest (aLin, myFirstPoint);
421
422 return IsValidPoints (myFirstPoint, mySecondPoint);
423}
424
425//=======================================================================
426//function : InitEdgeFaceLength
427//purpose :
428//=======================================================================
429Standard_Boolean AIS_LengthDimension::InitEdgeFaceLength (const TopoDS_Edge& theEdge,
430 const TopoDS_Face& theFace,
431 gp_Dir& theEdgeDir)
432{
433 Handle(Geom_Curve) aCurve;
434 gp_Pnt aFirstPoint, aSecondPoint;
435 Standard_Boolean isInfinite = Standard_False;
436
437 if (!AIS::ComputeGeometry (theEdge, aCurve, aFirstPoint, aSecondPoint, isInfinite))
438 {
439 return Standard_False;
440 }
441 theEdgeDir = gce_MakeDir (aFirstPoint, aSecondPoint);
442 gp_Pln aPlane;
443 Handle(Geom_Surface) aSurface;
444 AIS_KindOfSurface aSurfType;
445 Standard_Real anOffset;
446
447 if (!AIS::GetPlaneFromFace (theFace, aPlane, aSurface, aSurfType, anOffset))
448 {
449 return Standard_False;
450 }
451
452 GeomAPI_ExtremaCurveSurface aDistAdaptor (aCurve, aSurface);
453
454 aDistAdaptor.NearestPoints (myFirstPoint, mySecondPoint);
455
456 return IsValidPoints (myFirstPoint, mySecondPoint);
457}
458
459//=======================================================================
460//function : InitTwoShapesPoints
461//purpose : Initialization of two points where dimension layouts
462// will be attached
463//=======================================================================
464Standard_Boolean AIS_LengthDimension::InitTwoShapesPoints (const TopoDS_Shape& theFirstShape,
465 const TopoDS_Shape& theSecondShape,
466 gp_Pln& theComputedPlane,
467 Standard_Boolean& theIsPlaneComputed)
468{
469 theIsPlaneComputed = Standard_False;
470 gp_Dir aDirAttach;
471 Standard_Boolean isInfinite = Standard_False;
472 Standard_Boolean isSuccess = Standard_False;
473 switch (theFirstShape.ShapeType())
474 {
475 case TopAbs_FACE:
476 {
477 // Initialization for face
478 gp_Pln aFirstPlane;
479 Handle(Geom_Surface) aFirstSurface;
480 AIS_KindOfSurface aFirstSurfKind;
481 Standard_Real aFirstOffset;
482
483 TopoDS_Face aFirstFace = TopoDS::Face (theFirstShape);
484
485 AIS::InitFaceLength (TopoDS::Face (theFirstShape),
486 aFirstPlane,
487 aFirstSurface,
488 aFirstSurfKind,
489 aFirstOffset);
490
491 if (theSecondShape.ShapeType() == TopAbs_FACE)
492 {
493 // Initialization for face
494 myGeometryType = GeometryType_Faces;
495 gp_Pln aSecondPlane;
496 Handle(Geom_Surface) aSecondSurface;
497 AIS_KindOfSurface aSecondSurfKind;
498 Standard_Real aSecondOffset;
499
500 TopoDS_Face aSecondFace = TopoDS::Face (theSecondShape);
501
502 AIS::InitFaceLength (aSecondFace,
503 aSecondPlane,
504 aSecondSurface,
505 aSecondSurfKind,
506 aSecondOffset);
507
508 if (aFirstSurfKind == AIS_KOS_Plane)
509 {
510 if (!aFirstPlane.Axis().Direction().IsParallel (aSecondPlane.Axis().Direction(), Precision::Angular()))
511 {
512 return Standard_False;
513 }
514
515 TopExp_Explorer anExplorer (theFirstShape, TopAbs_VERTEX);
516
517 // In case of infinite planes
518 if (!anExplorer.More())
519 {
520 myFirstPoint = aFirstPlane.Location();
521 }
522 else
523 {
524 myFirstPoint = BRep_Tool::Pnt (TopoDS::Vertex (anExplorer.Current()));
525 }
526
527 mySecondPoint = AIS::ProjectPointOnPlane (myFirstPoint, aSecondPlane);
528
529 Quantity_Parameter anU, aV;
530 ElSLib::Parameters (aSecondPlane, mySecondPoint, anU, aV);
531
532 BRepTopAdaptor_FClass2d aClassifier (aSecondFace, Precision::Confusion());
533 TopAbs_State aState = aClassifier.Perform (gp_Pnt2d (anU, aV), Standard_False);
534
535 if (aState == TopAbs_OUT || aState == TopAbs_UNKNOWN)
536 {
537 mySecondPoint = AIS::Nearest (aSecondFace, myFirstPoint);
538 }
539
540 isSuccess = IsValidPoints (myFirstPoint, mySecondPoint);
541 if (isSuccess)
542 {
543 theComputedPlane = ComputePlane (aFirstPlane.Position().XDirection());
544 theIsPlaneComputed = Standard_True;
545 }
546 }
547 else // curvilinear faces
548 {
549 Standard_Real aU1Min, aV1Min, aU1Max, aV1Max;
550 Standard_Real aU2Min, aV2Min, aU2Max, aV2Max;
551 BRepTools::UVBounds (aFirstFace, aU1Min, aU1Max, aV1Min, aV1Max);
552 BRepTools::UVBounds (aSecondFace, aU2Min, aU2Max, aV2Min, aV2Max);
553
554 GeomAPI_ExtremaSurfaceSurface anExtrema (aFirstSurface, aSecondSurface,
555 aU1Min, aU1Max, aV1Min, aV1Max,
556 aU2Min, aU2Max, aV2Min, aV2Max);
557
558 Standard_Real aU1, aV1, aU2, aV2;
559 anExtrema.LowerDistanceParameters (aU1, aV1, aU2, aV2);
560 myFirstPoint = BRep_Tool::Surface (aFirstFace)->Value (aU1, aV1);
561 mySecondPoint = BRep_Tool::Surface (aSecondFace)->Value (aU2, aV2);
562
563 // Adjust automatic plane
564 gp_Ax2 aLocalAxes (myFirstPoint, gce_MakeDir (myFirstPoint, mySecondPoint));
565 aDirAttach = gce_MakeDir (aLocalAxes.XDirection ());
566
567 // Check points
568 isSuccess = IsValidPoints (myFirstPoint, mySecondPoint);
569 if (isSuccess)
570 {
571 theComputedPlane = ComputePlane (aDirAttach);
572 theIsPlaneComputed = Standard_True;
573 }
574 }
575
576 return isSuccess && IsValidPoints (myFirstPoint, mySecondPoint);
577 }
578 else if (theFirstShape.ShapeType() == TopAbs_EDGE)
579 {
580 myGeometryType = GeometryType_EdgeFace;
581 isSuccess = InitEdgeFaceLength (TopoDS::Edge (theFirstShape),
582 TopoDS::Face (theSecondShape),
583 aDirAttach);
584
585 if (isSuccess)
586 {
587 theComputedPlane = ComputePlane (aDirAttach);
588 theIsPlaneComputed = Standard_True;
589 }
590
591 return isSuccess;
592 }
593 }
594 break;
595
596 case TopAbs_EDGE:
597 {
598 if (theSecondShape.ShapeType() == TopAbs_VERTEX)
599 {
600 myGeometryType = GeometryType_EdgeVertex;
601 isSuccess = InitEdgeVertexLength (TopoDS::Edge (theFirstShape),
602 TopoDS::Vertex (theSecondShape),
603 aDirAttach,
604 isInfinite);
605
606 if (isSuccess)
607 {
608 theComputedPlane = ComputePlane (aDirAttach);
609 theIsPlaneComputed = Standard_True;
610 }
611
612 return isSuccess;
613 }
614 else if (theSecondShape.ShapeType() == TopAbs_EDGE)
615 {
616 myGeometryType = GeometryType_Edges;
617 isSuccess = InitTwoEdgesLength (TopoDS::Edge (theFirstShape),
618 TopoDS::Edge (theSecondShape),
619 aDirAttach);
620
621 if (isSuccess)
622 {
623 theComputedPlane = ComputePlane (aDirAttach);
624 theIsPlaneComputed = Standard_True;
625 }
626
627 return isSuccess;
628 }
629 }
630 break;
631
632 case TopAbs_VERTEX:
633 {
634 if (theSecondShape.ShapeType() == TopAbs_VERTEX)
635 {
636 myGeometryType = GeometryType_Points;
637 myFirstPoint = BRep_Tool::Pnt (TopoDS::Vertex (theFirstShape));
638 mySecondPoint = BRep_Tool::Pnt (TopoDS::Vertex (theSecondShape));
639
640 return IsValidPoints (myFirstPoint, mySecondPoint);
641 }
642 else if (theSecondShape.ShapeType() == TopAbs_EDGE)
643 {
644 myGeometryType = GeometryType_EdgeVertex;
645 Standard_Boolean isSuccess = InitEdgeVertexLength (TopoDS::Edge(theSecondShape),
646 TopoDS::Vertex(theFirstShape),
647 aDirAttach,
648 isInfinite);
649 if (isSuccess)
650 {
651 theComputedPlane = ComputePlane (aDirAttach);
652 theIsPlaneComputed = Standard_True;
653 }
654
655 return isSuccess;
656 }
657 }
658 break;
659
660 case TopAbs_COMPOUND:
661 case TopAbs_COMPSOLID:
662 case TopAbs_SOLID:
663 case TopAbs_SHELL:
664 case TopAbs_WIRE:
665 case TopAbs_SHAPE:
666 break;
667 }
668
669 return Standard_False;
670}
671
672//=======================================================================
673//function : InitOneShapePoints
674//purpose : Initialization of two points where dimension layouts
675// will be attached
676// Attention: 1) <theShape> can be only the edge in currect implementation
677// 2) No length for infinite edge
678//=======================================================================
679Standard_Boolean AIS_LengthDimension::InitOneShapePoints (const TopoDS_Shape& theShape)
680{
681 if (theShape.ShapeType() != TopAbs_EDGE)
682 {
683 return Standard_False;
684 }
685
686 TopoDS_Edge anEdge = TopoDS::Edge (theShape);
687
688 BRepAdaptor_Curve aBrepCurve(anEdge);
689 Standard_Real aFirst = aBrepCurve.FirstParameter();
690 Standard_Real aLast = aBrepCurve.LastParameter();
691
692 if (aBrepCurve.GetType() != GeomAbs_Line)
693 {
694 return Standard_False;
695 }
696
697 Standard_Boolean isInfinite = (Precision::IsInfinite (aFirst) || Precision::IsInfinite (aLast));
698 if (isInfinite)
699 {
700 return Standard_False;
701 }
702
703 myFirstPoint = aBrepCurve.Value (aBrepCurve.FirstParameter());
704 mySecondPoint = aBrepCurve.Value (aBrepCurve.LastParameter());
705
706 return IsValidPoints (myFirstPoint, mySecondPoint);
707}
708
709//=======================================================================
710//function : GetTextPosition
711//purpose :
712//=======================================================================
713const gp_Pnt AIS_LengthDimension::GetTextPosition() const
714{
715 if (IsTextPositionCustom())
716 {
717 return myFixedTextPosition;
718 }
719
720 // Counts text position according to the dimension parameters
721 return GetTextPositionForLinear (myFirstPoint, mySecondPoint);
722}
723
724//=======================================================================
725//function : SetTextPosition
726//purpose :
727//=======================================================================
728void AIS_LengthDimension::SetTextPosition (const gp_Pnt& theTextPos)
729{
730 if (!IsValid())
731 {
732 return;
733 }
734
735 myIsTextPositionFixed = Standard_True;
736 myFixedTextPosition = theTextPos;
737
738 SetToUpdate();
739}
Open CASCADE Technology repository