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0027756: Visualization - add Draw() method taking Graphic3d_Group to tools Prs3d_Arro...
[occt.git] / src / AIS / AIS_Dimension.cxx
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60bf98ae 1// Created on: 2013-11-11
2// Created by: Anastasia BORISOVA
d5f74e42 3// Copyright (c) 2013-2014 OPEN CASCADE SAS
a6eb515f 4//
973c2be1 5// This file is part of Open CASCADE Technology software library.
a6eb515f 6//
d5f74e42 7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
a6eb515f 12//
973c2be1 13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
a6eb515f 15
a6eb515f 16#include <AIS_Dimension.hxx>
d7bffd44 17
18#include <AIS.hxx>
a6eb515f 19#include <AIS_DimensionOwner.hxx>
a6eb515f 20#include <Adaptor3d_HCurve.hxx>
21#include <BRepAdaptor_Curve.hxx>
22#include <BRepAdaptor_Surface.hxx>
a6eb515f 23#include <BRepBndLib.hxx>
60bf98ae 24#include <Bnd_Box.hxx>
a6eb515f 25#include <ElCLib.hxx>
26#include <Font_BRepFont.hxx>
ac84fcf6 27#include <Font_BRepTextBuilder.hxx>
a6eb515f 28#include <GC_MakeCircle.hxx>
af203d54 29#include <Geom_Line.hxx>
fe83e1ea 30#include <GeomAdaptor_Curve.hxx>
a6eb515f 31#include <Geom_Circle.hxx>
a6eb515f 32#include <Geom_TrimmedCurve.hxx>
33#include <gce_MakeDir.hxx>
34#include <gce_MakeLin.hxx>
af203d54 35#include <gce_MakePln.hxx>
a6eb515f 36#include <Graphic3d_ArrayOfSegments.hxx>
37#include <Graphic3d_ArrayOfTriangles.hxx>
38#include <Graphic3d_AspectLine3d.hxx>
39#include <Graphic3d_AspectFillArea3d.hxx>
40#include <Graphic3d_AspectText3d.hxx>
41#include <Graphic3d_Group.hxx>
42#include <PrsMgr_PresentationManager3d.hxx>
43#include <Prs3d_Arrow.hxx>
44#include <Prs3d_ArrowAspect.hxx>
45#include <Prs3d_Drawer.hxx>
46#include <Prs3d_LineAspect.hxx>
47#include <Prs3d_Presentation.hxx>
48#include <Prs3d_Root.hxx>
49#include <Prs3d_ShadingAspect.hxx>
50#include <Prs3d_Text.hxx>
51#include <SelectMgr_EntityOwner.hxx>
52#include <SelectMgr_Selection.hxx>
53#include <SelectMgr_SequenceOfOwner.hxx>
a6eb515f 54#include <Select3D_SensitiveCircle.hxx>
55#include <Select3D_SensitiveGroup.hxx>
fe83e1ea 56#include <Select3D_SensitiveCurve.hxx>
a6eb515f 57#include <Select3D_SensitiveSegment.hxx>
fe83e1ea 58#include <Select3D_SensitiveTriangle.hxx>
51f8f60c 59#include <Select3D_SensitiveTriangulation.hxx>
60#include <Poly_Array1OfTriangle.hxx>
61#include <Poly_Triangulation.hxx>
a6eb515f 62#include <Standard_CString.hxx>
af203d54 63#include <Standard_ProgramError.hxx>
a6eb515f 64#include <StdPrs_ShadedShape.hxx>
65#include <StdPrs_WFShape.hxx>
66#include <TCollection_AsciiString.hxx>
67#include <TCollection_ExtendedString.hxx>
68#include <TopExp_Explorer.hxx>
69#include <TopoDS.hxx>
0499eb06 70#include <TopoDS_Edge.hxx>
a6eb515f 71#include <TopoDS_Vertex.hxx>
72#include <Units.hxx>
73#include <Units_UnitsDictionary.hxx>
74#include <UnitsAPI.hxx>
75#include <UnitsAPI_SystemUnits.hxx>
76
a6eb515f 77
92efcf78 78IMPLEMENT_STANDARD_RTTIEXT(AIS_Dimension,AIS_InteractiveObject)
79
d7bffd44 80namespace
a6eb515f 81{
fe83e1ea 82 // default text strings
d7bffd44 83 static const TCollection_ExtendedString THE_EMPTY_LABEL;
60bf98ae 84 static const TCollection_AsciiString THE_UNDEFINED_UNITS;
fe83e1ea 85
86 // default text margin and resolution
87 static const Standard_Real THE_3D_TEXT_MARGIN = 0.1;
88 static const unsigned int THE_2D_TEXT_RESOLUTION = 72;
89
90 // default selection priorities
91 static const Standard_Integer THE_NEUTRAL_SEL_PRIORITY = 5;
92 static const Standard_Integer THE_LOCAL_SEL_PRIORITY = 6;
a3f6f591 93}
a6eb515f 94
95//=======================================================================
96//function : Constructor
97//purpose :
98//=======================================================================
60bf98ae 99AIS_Dimension::AIS_Dimension (const AIS_KindOfDimension theType)
cbff1e55 100: AIS_InteractiveObject (),
101 mySelToleranceForText2d(0.0),
102 myCustomValue (0.0),
103 myIsValueCustom (Standard_False),
104 myIsTextPositionFixed (Standard_False),
105 mySpecialSymbol (' '),
a6eb515f 106 myDisplaySpecialSymbol (AIS_DSS_No),
cbff1e55 107 myGeometryType (GeometryType_UndefShapes),
108 myIsPlaneCustom (Standard_False),
109 myFlyout (0.0),
110 myIsGeometryValid (Standard_False),
111 myKindOfDimension (theType)
a6eb515f 112{
a6eb515f 113}
114
115//=======================================================================
60bf98ae 116//function : SetCustomValue
117//purpose :
a6eb515f 118//=======================================================================
60bf98ae 119void AIS_Dimension::SetCustomValue (const Standard_Real theValue)
a6eb515f 120{
60bf98ae 121 if (myIsValueCustom && myCustomValue == theValue)
122 {
123 return;
124 }
a6eb515f 125
60bf98ae 126 myIsValueCustom = Standard_True;
127
128 myCustomValue = theValue;
129
130 SetToUpdate();
a6eb515f 131}
132
133//=======================================================================
60bf98ae 134//function : GetPlane
a6eb515f 135//purpose :
136//=======================================================================
60bf98ae 137const gp_Pln& AIS_Dimension::GetPlane() const
a6eb515f 138{
60bf98ae 139 return myPlane;
a6eb515f 140}
141
a6eb515f 142//=======================================================================
60bf98ae 143//function : SetUserPlane
a6eb515f 144//purpose :
145//=======================================================================
60bf98ae 146void AIS_Dimension::SetCustomPlane (const gp_Pln& thePlane)
a6eb515f 147{
60bf98ae 148 myPlane = thePlane;
149 myIsPlaneCustom = Standard_True;
150
91b16a64 151 // Disable fixed (custom) text position
af203d54 152 UnsetFixedTextPosition();
153
60bf98ae 154 // Check validity if geometry has been set already.
91b16a64 155 if (IsValid())
60bf98ae 156 {
60bf98ae 157 SetToUpdate();
158 }
a6eb515f 159}
160
161//=======================================================================
60bf98ae 162//function : SetDimensionAspect
163//purpose :
a6eb515f 164//=======================================================================
60bf98ae 165void AIS_Dimension::SetDimensionAspect (const Handle(Prs3d_DimensionAspect)& theDimensionAspect)
a6eb515f 166{
60bf98ae 167 myDrawer->SetDimensionAspect (theDimensionAspect);
168
169 SetToUpdate();
a6eb515f 170}
171
172//=======================================================================
60bf98ae 173//function : SetDisplaySpecialSymbol
174//purpose :
a6eb515f 175//=======================================================================
60bf98ae 176void AIS_Dimension::SetDisplaySpecialSymbol (const AIS_DisplaySpecialSymbol theDisplaySpecSymbol)
a6eb515f 177{
60bf98ae 178 if (myDisplaySpecialSymbol == theDisplaySpecSymbol)
179 {
180 return;
181 }
182
183 myDisplaySpecialSymbol = theDisplaySpecSymbol;
184
185 SetToUpdate();
a6eb515f 186}
187
188//=======================================================================
60bf98ae 189//function : SetSpecialSymbol
a6eb515f 190//purpose :
191//=======================================================================
60bf98ae 192void AIS_Dimension::SetSpecialSymbol (const Standard_ExtCharacter theSpecialSymbol)
a6eb515f 193{
60bf98ae 194 if (mySpecialSymbol == theSpecialSymbol)
195 {
196 return;
197 }
198
199 mySpecialSymbol = theSpecialSymbol;
200
201 SetToUpdate();
a6eb515f 202}
203
204//=======================================================================
60bf98ae 205//function : SetSelToleranceForText2d
206//purpose :
a6eb515f 207//=======================================================================
60bf98ae 208void AIS_Dimension::SetSelToleranceForText2d (const Standard_Real theTol)
a6eb515f 209{
60bf98ae 210 if (mySelToleranceForText2d == theTol)
211 {
212 return;
213 }
214
215 mySelToleranceForText2d = theTol;
216
217 SetToUpdate();
a6eb515f 218}
219
220//=======================================================================
60bf98ae 221//function : SetFlyout
222//purpose :
a6eb515f 223//=======================================================================
60bf98ae 224void AIS_Dimension::SetFlyout (const Standard_Real theFlyout)
a6eb515f 225{
60bf98ae 226 if (myFlyout == theFlyout)
227 {
228 return;
229 }
a6eb515f 230
60bf98ae 231 myFlyout = theFlyout;
232
af203d54 233 // Disable fixed text position
234 UnsetFixedTextPosition();
235
60bf98ae 236 SetToUpdate();
237}
a6eb515f 238
239//=======================================================================
60bf98ae 240//function : GetDisplayUnits
241//purpose :
a6eb515f 242//=======================================================================
60bf98ae 243const TCollection_AsciiString& AIS_Dimension::GetDisplayUnits() const
a6eb515f 244{
60bf98ae 245 return THE_UNDEFINED_UNITS;
a6eb515f 246}
247
248//=======================================================================
60bf98ae 249//function : GetModelUnits
250//purpose :
a6eb515f 251//=======================================================================
60bf98ae 252const TCollection_AsciiString& AIS_Dimension::GetModelUnits() const
a6eb515f 253{
60bf98ae 254 return THE_UNDEFINED_UNITS;
a6eb515f 255}
256
257//=======================================================================
60bf98ae 258//function : ValueToDisplayUnits
259//purpose :
a6eb515f 260//=======================================================================
60bf98ae 261Standard_Real AIS_Dimension::ValueToDisplayUnits() const
a6eb515f 262{
60bf98ae 263 return UnitsAPI::AnyToAny (GetValue(),
264 GetModelUnits().ToCString(),
265 GetDisplayUnits().ToCString());
a6eb515f 266}
267
268//=======================================================================
60bf98ae 269//function : GetValueString
a6eb515f 270//purpose :
271//=======================================================================
60bf98ae 272TCollection_ExtendedString AIS_Dimension::GetValueString (Standard_Real& theWidth) const
a6eb515f 273{
60bf98ae 274 // format value string using "sprintf"
275 TCollection_AsciiString aFormatStr = myDrawer->DimensionAspect()->ValueStringFormat();
a6eb515f 276
60bf98ae 277 char aFmtBuffer[256];
278 sprintf (aFmtBuffer, aFormatStr.ToCString(), ValueToDisplayUnits());
279 TCollection_ExtendedString aValueStr = TCollection_ExtendedString (aFmtBuffer);
a6eb515f 280
60bf98ae 281 // add units to values string
282 if (myDrawer->DimensionAspect()->IsUnitsDisplayed())
a6eb515f 283 {
60bf98ae 284 aValueStr += " ";
285 aValueStr += TCollection_ExtendedString (GetDisplayUnits());
a6eb515f 286 }
60bf98ae 287
288 switch (myDisplaySpecialSymbol)
a6eb515f 289 {
60bf98ae 290 case AIS_DSS_Before : aValueStr.Insert (1, mySpecialSymbol); break;
291 case AIS_DSS_After : aValueStr.Insert (aValueStr.Length() + 1, mySpecialSymbol); break;
292 case AIS_DSS_No : break;
a6eb515f 293 }
294
d7bffd44 295 // Get text style parameters
b6472664 296 Handle(Prs3d_TextAspect) aTextAspect = myDrawer->DimensionAspect()->TextAspect();
60bf98ae 297 NCollection_Utf8String anUTFString = (Standard_Utf16Char* )aValueStr.ToExtString();
fe83e1ea 298
d7bffd44 299 theWidth = 0.0;
fe83e1ea 300
301 if (myDrawer->DimensionAspect()->IsText3d())
302 {
303 // text width produced by BRepFont
b6472664 304 Font_BRepFont aFont (aTextAspect->Aspect()->Font().ToCString(),
305 aTextAspect->Aspect()->GetTextFontAspect(),
306 aTextAspect->Height());
fe83e1ea 307
308 for (NCollection_Utf8Iter anIter = anUTFString.Iterator(); *anIter != 0; )
309 {
310 Standard_Utf32Char aCurrChar = *anIter;
311 Standard_Utf32Char aNextChar = *(++anIter);
312 theWidth += aFont.AdvanceX (aCurrChar, aNextChar);
313 }
314 }
315 else
d7bffd44 316 {
fe83e1ea 317 // Text width for 1:1 scale 2D case
60bf98ae 318 Handle(Font_FTFont) aFont = new Font_FTFont();
b6472664 319 aFont->Init (aTextAspect->Aspect()->Font().ToCString(),
320 aTextAspect->Aspect()->GetTextFontAspect(),
321 (const unsigned int)aTextAspect->Height(),
322 THE_2D_TEXT_RESOLUTION);
fe83e1ea 323
324 for (NCollection_Utf8Iter anIter = anUTFString.Iterator(); *anIter != 0; )
325 {
326 Standard_Utf32Char aCurrChar = *anIter;
327 Standard_Utf32Char aNextChar = *(++anIter);
328 theWidth += (Standard_Real) aFont->AdvanceX (aCurrChar, aNextChar);
329 }
d7bffd44 330 }
60bf98ae 331
332 return aValueStr;
a6eb515f 333}
334
335//=======================================================================
60bf98ae 336//function : DrawArrow
a6eb515f 337//purpose :
338//=======================================================================
60bf98ae 339void AIS_Dimension::DrawArrow (const Handle(Prs3d_Presentation)& thePresentation,
a6eb515f 340 const gp_Pnt& theLocation,
341 const gp_Dir& theDirection)
342{
4ad142d9 343 Handle(Graphic3d_Group) aGroup = Prs3d_Root::NewGroup (thePresentation);
fe83e1ea 344
345 Quantity_Length aLength = myDrawer->DimensionAspect()->ArrowAspect()->Length();
346 Standard_Real anAngle = myDrawer->DimensionAspect()->ArrowAspect()->Angle();
a6eb515f 347
348 if (myDrawer->DimensionAspect()->IsArrows3d())
349 {
4ad142d9 350 Prs3d_Arrow::Draw (aGroup,
a6eb515f 351 theLocation,
d7bffd44 352 theDirection,
fe83e1ea 353 anAngle,
354 aLength);
4ad142d9 355 aGroup->SetGroupPrimitivesAspect (myDrawer->DimensionAspect()->ArrowAspect()->Aspect());
a6eb515f 356 }
357 else
358 {
fe83e1ea 359 gp_Pnt aLeftPoint (gp::Origin());
360 gp_Pnt aRightPoint (gp::Origin());
60bf98ae 361 const gp_Dir& aPlane = GetPlane().Axis().Direction();
fe83e1ea 362
363 PointsForArrow (theLocation, theDirection, aPlane, aLength, anAngle, aLeftPoint, aRightPoint);
364
a6eb515f 365 Handle(Graphic3d_ArrayOfTriangles) anArrow = new Graphic3d_ArrayOfTriangles(3);
a6eb515f 366
367 anArrow->AddVertex (aLeftPoint);
368 anArrow->AddVertex (theLocation);
369 anArrow->AddVertex (aRightPoint);
370
371 // Set aspect for arrow triangles
a6eb515f 372 Graphic3d_MaterialAspect aShadeMat (Graphic3d_NOM_DEFAULT);
373 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_AMBIENT);
374 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_DIFFUSE);
375 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_SPECULAR);
d7bffd44 376
377 Handle(Prs3d_ShadingAspect) aShadingStyle = new Prs3d_ShadingAspect();
b6472664 378 aShadingStyle->SetColor (myDrawer->DimensionAspect()->ArrowAspect()->Aspect()->Color());
d7bffd44 379 aShadingStyle->SetMaterial (aShadeMat);
380
4ad142d9 381 aGroup->SetPrimitivesAspect (aShadingStyle->Aspect());
382 aGroup->AddPrimitiveArray (anArrow);
a6eb515f 383 }
fe83e1ea 384
385 SelectionGeometry::Arrow& aSensitiveArrow = mySelectionGeom.NewArrow();
386 aSensitiveArrow.Position = theLocation;
387 aSensitiveArrow.Direction = theDirection;
a6eb515f 388}
389
390//=======================================================================
7c65581d 391//function : drawText
392//purpose :
a6eb515f 393//=======================================================================
7c65581d 394void AIS_Dimension::drawText (const Handle(Prs3d_Presentation)& thePresentation,
fe83e1ea 395 const gp_Pnt& theTextPos,
396 const gp_Dir& theTextDir,
397 const TCollection_ExtendedString& theText,
398 const Standard_Integer theLabelPosition)
a6eb515f 399{
a6eb515f 400 if (myDrawer->DimensionAspect()->IsText3d())
401 {
fe83e1ea 402 // getting font parameters
b6472664 403 Handle(Prs3d_TextAspect) aTextAspect = myDrawer->DimensionAspect()->TextAspect();
404 Quantity_Color aColor = aTextAspect->Aspect()->Color();
405 Font_FontAspect aFontAspect = aTextAspect->Aspect()->GetTextFontAspect();
406 Standard_Real aFontHeight = aTextAspect->Height();
a6eb515f 407
fe83e1ea 408 // creating TopoDS_Shape for text
b6472664 409 Font_BRepFont aFont (aTextAspect->Aspect()->Font().ToCString(),
410 aFontAspect, aFontHeight);
fe83e1ea 411 NCollection_Utf8String anUTFString = (Standard_Utf16Char* )theText.ToExtString();
ac84fcf6 412
413 Font_BRepTextBuilder aBuilder;
414 TopoDS_Shape aTextShape = aBuilder.Perform (aFont, anUTFString);
a6eb515f 415
fe83e1ea 416 // compute text width with kerning
417 Standard_Real aTextWidth = 0.0;
418 Standard_Real aTextHeight = aFont.Ascender() + aFont.Descender();
d7bffd44 419
fe83e1ea 420 for (NCollection_Utf8Iter anIter = anUTFString.Iterator(); *anIter != 0; )
421 {
422 Standard_Utf32Char aCurrChar = *anIter;
423 Standard_Utf32Char aNextChar = *(++anIter);
424 aTextWidth += aFont.AdvanceX (aCurrChar, aNextChar);
425 }
426
427 // formating text position in XOY plane
d7bffd44 428 Standard_Integer aHLabelPos = theLabelPosition & LabelPosition_HMask;
429 Standard_Integer aVLabelPos = theLabelPosition & LabelPosition_VMask;
430
431 gp_Dir aTextDir (aHLabelPos == LabelPosition_Left ? -theTextDir : theTextDir);
432
433 // compute label offsets
fe83e1ea 434 Standard_Real aMarginSize = aFontHeight * THE_3D_TEXT_MARGIN;
d7bffd44 435 Standard_Real aCenterHOffset = 0.0;
436 Standard_Real aCenterVOffset = 0.0;
437 switch (aHLabelPos)
a6eb515f 438 {
d7bffd44 439 case LabelPosition_HCenter : aCenterHOffset = 0.0; break;
440 case LabelPosition_Right : aCenterHOffset = aTextWidth / 2.0 + aMarginSize; break;
441 case LabelPosition_Left : aCenterHOffset = -aTextWidth / 2.0 - aMarginSize; break;
a6eb515f 442 }
d7bffd44 443 switch (aVLabelPos)
a6eb515f 444 {
d7bffd44 445 case LabelPosition_VCenter : aCenterVOffset = 0.0; break;
446 case LabelPosition_Above : aCenterVOffset = aTextHeight / 2.0 + aMarginSize; break;
447 case LabelPosition_Below : aCenterVOffset = -aTextHeight / 2.0 - aMarginSize; break;
a6eb515f 448 }
d7bffd44 449
450 // compute shape offset transformation
fe83e1ea 451 Standard_Real aShapeHOffset = aCenterHOffset - aTextWidth / 2.0;
d7bffd44 452 Standard_Real aShapeVOffset = aCenterVOffset - aTextHeight / 2.0;
453
fe83e1ea 454 // center shape in its bounding box (suppress border spacing added by FT_Font)
455 Bnd_Box aShapeBnd;
456 BRepBndLib::AddClose (aTextShape, aShapeBnd);
457
458 Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax;
459 aShapeBnd.Get (aXmin, aYmin, aZmin, aXmax, aYmax, aZmax);
460
461 Standard_Real aXalign = aTextWidth * 0.5 - (aXmax + aXmin) * 0.5;
462 Standard_Real aYalign = aTextHeight * 0.5 - (aYmax + aYmin) * 0.5;
463 aShapeHOffset += aXalign;
464 aShapeVOffset += aYalign;
465
d7bffd44 466 gp_Trsf anOffsetTrsf;
467 anOffsetTrsf.SetTranslation (gp::Origin(), gp_Pnt (aShapeHOffset, aShapeVOffset, 0.0));
468 aTextShape.Move (anOffsetTrsf);
a6eb515f 469
fe83e1ea 470 // transform text to myWorkingPlane coordinate system
60bf98ae 471 gp_Ax3 aTextCoordSystem (theTextPos, GetPlane().Axis().Direction(), aTextDir);
d7bffd44 472 gp_Trsf aTextPlaneTrsf;
473 aTextPlaneTrsf.SetTransformation (aTextCoordSystem, gp_Ax3 (gp::XOY()));
474 aTextShape.Move (aTextPlaneTrsf);
a6eb515f 475
fe83e1ea 476 // set text flipping anchors
d7bffd44 477 gp_Trsf aCenterOffsetTrsf;
478 gp_Pnt aCenterOffset (aCenterHOffset, aCenterVOffset, 0.0);
479 aCenterOffsetTrsf.SetTranslation (gp::Origin(), aCenterOffset);
480
fe83e1ea 481 gp_Pnt aCenterOfLabel (gp::Origin());
482 aCenterOfLabel.Transform (aCenterOffsetTrsf);
483 aCenterOfLabel.Transform (aTextPlaneTrsf);
d7bffd44 484
60bf98ae 485 gp_Ax2 aFlippingAxes (aCenterOfLabel, GetPlane().Axis().Direction(), aTextDir);
d7bffd44 486 Prs3d_Root::CurrentGroup (thePresentation)->SetFlippingOptions (Standard_True, aFlippingAxes);
487
fe83e1ea 488 // draw text
a6eb515f 489 if (myDrawer->DimensionAspect()->IsTextShaded())
490 {
491 // Setting text shading and color parameters
d2dfbc4d 492 if (!myDrawer->HasOwnShadingAspect())
493 {
494 myDrawer->SetShadingAspect (new Prs3d_ShadingAspect());
495 }
496
a6eb515f 497 Graphic3d_MaterialAspect aShadeMat (Graphic3d_NOM_DEFAULT);
498 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_AMBIENT);
499 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_DIFFUSE);
500 aShadeMat.SetReflectionModeOff (Graphic3d_TOR_SPECULAR);
501 myDrawer->ShadingAspect()->Aspect()->SetInteriorColor (aColor);
502 myDrawer->ShadingAspect()->Aspect()->SetBackInteriorColor (aColor);
503 myDrawer->ShadingAspect()->SetMaterial (aShadeMat);
504
fe83e1ea 505 // drawing text
a6eb515f 506 StdPrs_ShadedShape::Add (thePresentation, aTextShape, myDrawer);
507 }
508 else
509 {
d2dfbc4d 510 // Setting color for text
511 if (!myDrawer->HasOwnFreeBoundaryAspect())
512 {
513 myDrawer->SetFreeBoundaryAspect (new Prs3d_LineAspect (aColor, Aspect_TOL_SOLID, 1.0));
514 }
515
a6eb515f 516 myDrawer->FreeBoundaryAspect()->Aspect()->SetColor (aColor);
d2dfbc4d 517
fe83e1ea 518 // drawing text
a6eb515f 519 StdPrs_WFShape::Add (thePresentation, aTextShape, myDrawer);
520 }
d7bffd44 521 Prs3d_Root::CurrentGroup (thePresentation)->SetFlippingOptions (Standard_False, gp_Ax2());
522
fe83e1ea 523 mySelectionGeom.TextPos = aCenterOfLabel;
524 mySelectionGeom.TextDir = aTextDir;
525 mySelectionGeom.TextWidth = aTextWidth + aMarginSize * 2.0;
526 mySelectionGeom.TextHeight = aTextHeight;
527
528 return;
a6eb515f 529 }
530
fe83e1ea 531 // generate primitives for 2D text
d7bffd44 532 myDrawer->DimensionAspect()->TextAspect()->Aspect()->SetDisplayType (Aspect_TODT_DIMENSION);
533
4ad142d9 534 Prs3d_Text::Draw (Prs3d_Root::CurrentGroup (thePresentation),
d7bffd44 535 myDrawer->DimensionAspect()->TextAspect(),
536 theText,
fe83e1ea 537 theTextPos);
d7bffd44 538
fe83e1ea 539 mySelectionGeom.TextPos = theTextPos;
540 mySelectionGeom.TextDir = theTextDir;
541 mySelectionGeom.TextWidth = 0.0;
542 mySelectionGeom.TextHeight = 0.0;
a6eb515f 543}
544
d7bffd44 545//=======================================================================
60bf98ae 546//function : DrawExtension
a6eb515f 547//purpose :
548//=======================================================================
60bf98ae 549void AIS_Dimension::DrawExtension (const Handle(Prs3d_Presentation)& thePresentation,
d7bffd44 550 const Standard_Real theExtensionSize,
551 const gp_Pnt& theExtensionStart,
552 const gp_Dir& theExtensionDir,
fe83e1ea 553 const TCollection_ExtendedString& theLabelString,
554 const Standard_Real theLabelWidth,
555 const Standard_Integer theMode,
d7bffd44 556 const Standard_Integer theLabelPosition)
a6eb515f 557{
fe83e1ea 558 // reference line for extension starting at its connection point
559 gp_Lin anExtensionLine (theExtensionStart, theExtensionDir);
a6eb515f 560
fe83e1ea 561 Standard_Boolean hasLabel = theLabelString.Length() > 0;
fe83e1ea 562 if (hasLabel && (theMode == ComputeMode_All || theMode == ComputeMode_Text))
a6eb515f 563 {
d7bffd44 564 // compute text primitives; get its model width
fe83e1ea 565 gp_Pnt aTextPos = ElCLib::Value (theExtensionSize, anExtensionLine);
60bf98ae 566 gp_Dir aTextDir = theExtensionDir;
fe83e1ea 567
7c65581d 568 drawText (thePresentation,
fe83e1ea 569 aTextPos,
570 aTextDir,
571 theLabelString,
572 theLabelPosition);
a6eb515f 573 }
574
fe83e1ea 575 if (theMode != ComputeMode_All && theMode != ComputeMode_Line)
a6eb515f 576 {
d7bffd44 577 return;
a6eb515f 578 }
579
fe83e1ea 580 Standard_Boolean isShortLine = !myDrawer->DimensionAspect()->IsText3d()
581 || theLabelPosition & LabelPosition_VCenter;
582
d7bffd44 583 // compute graphical primitives and sensitives for extension line
584 gp_Pnt anExtStart = theExtensionStart;
fe83e1ea 585 gp_Pnt anExtEnd = !hasLabel || isShortLine
586 ? ElCLib::Value (theExtensionSize, anExtensionLine)
587 : ElCLib::Value (theExtensionSize + theLabelWidth, anExtensionLine);
d7bffd44 588
fe83e1ea 589 // add graphical primitives
d7bffd44 590 Handle(Graphic3d_ArrayOfSegments) anExtPrimitive = new Graphic3d_ArrayOfSegments (2);
591 anExtPrimitive->AddVertex (anExtStart);
592 anExtPrimitive->AddVertex (anExtEnd);
593
fe83e1ea 594 // add selection primitives
595 SelectionGeometry::Curve& aSensitiveCurve = mySelectionGeom.NewCurve();
596 aSensitiveCurve.Append (anExtStart);
597 aSensitiveCurve.Append (anExtEnd);
a6eb515f 598
fe83e1ea 599 if (!myDrawer->DimensionAspect()->IsText3d() && theMode == ComputeMode_All)
a6eb515f 600 {
d7bffd44 601 Prs3d_Root::CurrentGroup (thePresentation)->SetStencilTestOptions (Standard_True);
602 }
603 Handle(Graphic3d_AspectLine3d) aDimensionLineStyle = myDrawer->DimensionAspect()->LineAspect()->Aspect();
604 Prs3d_Root::CurrentGroup (thePresentation)->SetPrimitivesAspect (aDimensionLineStyle);
605 Prs3d_Root::CurrentGroup (thePresentation)->AddPrimitiveArray (anExtPrimitive);
fe83e1ea 606 if (!myDrawer->DimensionAspect()->IsText3d() && theMode == ComputeMode_All)
d7bffd44 607 {
608 Prs3d_Root::CurrentGroup (thePresentation)->SetStencilTestOptions (Standard_False);
a6eb515f 609 }
610}
611
612//=======================================================================
60bf98ae 613//function : DrawLinearDimension
a6eb515f 614//purpose :
615//=======================================================================
60bf98ae 616void AIS_Dimension::DrawLinearDimension (const Handle(Prs3d_Presentation)& thePresentation,
fe83e1ea 617 const Standard_Integer theMode,
60bf98ae 618 const gp_Pnt& theFirstPoint,
619 const gp_Pnt& theSecondPoint,
620 const Standard_Boolean theIsOneSide)
a6eb515f 621{
60bf98ae 622 // do not build any dimension for equal points
623 if (theFirstPoint.IsEqual (theSecondPoint, Precision::Confusion()))
a6eb515f 624 {
60bf98ae 625 Standard_ProgramError::Raise ("Can not build presentation for equal points.");
a6eb515f 626 }
d7bffd44 627
a6eb515f 628 Handle(Prs3d_DimensionAspect) aDimensionAspect = myDrawer->DimensionAspect();
a6eb515f 629
d7bffd44 630 // For extensions we need to know arrow size, text size and extension size: get it from aspect
631 Quantity_Length anArrowLength = aDimensionAspect->ArrowAspect()->Length();
632 Standard_Real anExtensionSize = aDimensionAspect->ExtensionSize();
fe83e1ea 633 // prepare label string and compute its geometrical width
634 Standard_Real aLabelWidth;
60bf98ae 635 TCollection_ExtendedString aLabelString = GetValueString (aLabelWidth);
a6eb515f 636
fe83e1ea 637 // add margins to cut dimension lines for 3d text
638 if (aDimensionAspect->IsText3d())
639 {
640 aLabelWidth += aDimensionAspect->TextAspect()->Height() * THE_3D_TEXT_MARGIN * 2.0;
641 }
642
643 // handle user-defined and automatic arrow placement
af203d54 644 Standard_Boolean isArrowsExternal = Standard_False;
645 Standard_Integer aLabelPosition = LabelPosition_None;
fe83e1ea 646
af203d54 647 Prs3d_DimensionTextHorizontalPosition aHorisontalTextPos = aDimensionAspect->TextHorizontalPosition();
648 if (IsTextPositionCustom())
649 {
91b16a64 650 if (!AdjustParametersForLinear (myFixedTextPosition, theFirstPoint, theSecondPoint,
651 anExtensionSize, aHorisontalTextPos, myFlyout, myPlane, myIsPlaneCustom))
652 {
653 Standard_ProgramError::Raise ("Can not adjust plane to the custom label position.");
654 }
a6eb515f 655 }
a6eb515f 656
af203d54 657 FitTextAlignmentForLinear (theFirstPoint, theSecondPoint, theIsOneSide, aHorisontalTextPos,
658 aLabelPosition, isArrowsExternal);
659
660 // compute dimension line points
661 gp_Ax1 aPlaneNormal = GetPlane().Axis();
662 gp_Dir aTargetPointsVector = gce_MakeDir (theFirstPoint, theSecondPoint);
663
664 // compute flyout direction vector
665 gp_Dir aFlyoutVector = aPlaneNormal.Direction() ^ aTargetPointsVector;
666
667 // create lines for layouts
668 gp_Lin aLine1 (theFirstPoint, aFlyoutVector);
669 gp_Lin aLine2 (theSecondPoint, aFlyoutVector);
670
671 // Get flyout end points
672 gp_Pnt aLineBegPoint = ElCLib::Value (ElCLib::Parameter (aLine1, theFirstPoint) + GetFlyout(), aLine1);
673 gp_Pnt aLineEndPoint = ElCLib::Value (ElCLib::Parameter (aLine2, theSecondPoint) + GetFlyout(), aLine2);
674
675 gp_Lin aDimensionLine = gce_MakeLin (aLineBegPoint, aLineEndPoint);
676
fe83e1ea 677 // compute arrows positions and directions
d7bffd44 678 gp_Dir aFirstArrowDir = aDimensionLine.Direction().Reversed();
679 gp_Dir aSecondArrowDir = aDimensionLine.Direction();
680 gp_Dir aFirstExtensionDir = aDimensionLine.Direction().Reversed();
681 gp_Dir aSecondExtensionDir = aDimensionLine.Direction();
682
683 gp_Pnt aFirstArrowBegin (0.0, 0.0, 0.0);
684 gp_Pnt aFirstArrowEnd (0.0, 0.0, 0.0);
685 gp_Pnt aSecondArrowBegin (0.0, 0.0, 0.0);
686 gp_Pnt aSecondArrowEnd (0.0, 0.0, 0.0);
a6eb515f 687
d7bffd44 688 if (isArrowsExternal)
a6eb515f 689 {
690 aFirstArrowDir.Reverse();
691 aSecondArrowDir.Reverse();
a6eb515f 692 }
d7bffd44 693
694 aFirstArrowBegin = aLineBegPoint;
695 aSecondArrowBegin = aLineEndPoint;
696 aFirstArrowEnd = aLineBegPoint.Translated (-gp_Vec (aFirstArrowDir).Scaled (anArrowLength));
697 aSecondArrowEnd = aLineEndPoint.Translated (-gp_Vec (aSecondArrowDir).Scaled (anArrowLength));
698
699 gp_Pnt aCenterLineBegin = isArrowsExternal
60bf98ae 700 ? aLineBegPoint : aFirstArrowEnd;
d7bffd44 701
60bf98ae 702 gp_Pnt aCenterLineEnd = isArrowsExternal || theIsOneSide
d7bffd44 703 ? aLineEndPoint : aSecondArrowEnd;
704
a6eb515f 705
d7bffd44 706 switch (aLabelPosition & LabelPosition_HMask)
a6eb515f 707 {
d7bffd44 708 // ------------------------------------------------------------------------ //
709 // CENTER //
710 // -------------------------------------------------------------------------//
d7bffd44 711 case LabelPosition_HCenter:
a6eb515f 712 {
d7bffd44 713 // add label on dimension or extension line to presentation
714 Prs3d_Root::NewGroup (thePresentation);
a6eb515f 715
af203d54 716 gp_Pnt aTextPos = IsTextPositionCustom() ? myFixedTextPosition
717 : (aCenterLineBegin.XYZ() + aCenterLineEnd.XYZ()) * 0.5;
60bf98ae 718 gp_Dir aTextDir = aDimensionLine.Direction();
a6eb515f 719
fe83e1ea 720 // add text primitives
721 if (theMode == ComputeMode_All || theMode == ComputeMode_Text)
a6eb515f 722 {
7c65581d 723 drawText (thePresentation,
fe83e1ea 724 aTextPos,
725 aTextDir,
726 aLabelString,
727 aLabelPosition);
a6eb515f 728 }
d7bffd44 729
fe83e1ea 730 // add dimension line primitives
731 if (theMode == ComputeMode_All || theMode == ComputeMode_Line)
732 {
733 Standard_Boolean isLineBreak = aDimensionAspect->TextVerticalPosition() == Prs3d_DTVP_Center
734 && aDimensionAspect->IsText3d();
d7bffd44 735
fe83e1ea 736 Handle(Graphic3d_ArrayOfSegments) aPrimSegments = new Graphic3d_ArrayOfSegments (isLineBreak ? 4 : 2);
d7bffd44 737
fe83e1ea 738 // compute continuous or sectioned main line segments
739 if (isLineBreak)
740 {
741 Standard_Real aPTextPosition = ElCLib::Parameter (aDimensionLine, aTextPos);
742 gp_Pnt aSection1Beg = aCenterLineBegin;
743 gp_Pnt aSection1End = ElCLib::Value (aPTextPosition - (aLabelWidth * 0.5), aDimensionLine);
744 gp_Pnt aSection2Beg = ElCLib::Value (aPTextPosition + (aLabelWidth * 0.5), aDimensionLine);
745 gp_Pnt aSection2End = aCenterLineEnd;
746
747 aPrimSegments->AddVertex (aSection1Beg);
748 aPrimSegments->AddVertex (aSection1End);
749 aPrimSegments->AddVertex (aSection2Beg);
750 aPrimSegments->AddVertex (aSection2End);
751
752 SelectionGeometry::Curve& aLeftSensitiveCurve = mySelectionGeom.NewCurve();
753 SelectionGeometry::Curve& aRightSensitiveCurve = mySelectionGeom.NewCurve();
754 aLeftSensitiveCurve.Append (aSection1Beg);
755 aLeftSensitiveCurve.Append (aSection1End);
756 aRightSensitiveCurve.Append (aSection2Beg);
757 aRightSensitiveCurve.Append (aSection2End);
758 }
759 else
760 {
761 aPrimSegments->AddVertex (aCenterLineBegin);
762 aPrimSegments->AddVertex (aCenterLineEnd);
a6eb515f 763
fe83e1ea 764 SelectionGeometry::Curve& aSensitiveCurve = mySelectionGeom.NewCurve();
765 aSensitiveCurve.Append (aCenterLineBegin);
766 aSensitiveCurve.Append (aCenterLineEnd);
767 }
a6eb515f 768
fe83e1ea 769 // set text label justification
770 Graphic3d_VerticalTextAlignment aTextJustificaton = Graphic3d_VTA_BOTTOM;
771 switch (aLabelPosition & LabelPosition_VMask)
772 {
773 case LabelPosition_Above :
774 case LabelPosition_VCenter : aTextJustificaton = Graphic3d_VTA_BOTTOM; break;
775 case LabelPosition_Below : aTextJustificaton = Graphic3d_VTA_TOP; break;
776 }
777 aDimensionAspect->TextAspect()->SetVerticalJustification (aTextJustificaton);
a6eb515f 778
fe83e1ea 779 // main dimension line, short extension
780 if (!aDimensionAspect->IsText3d() && theMode == ComputeMode_All)
781 {
782 Prs3d_Root::CurrentGroup (thePresentation)->SetStencilTestOptions (Standard_True);
783 }
784 Prs3d_Root::CurrentGroup (thePresentation)->SetPrimitivesAspect (aDimensionAspect->LineAspect()->Aspect());
785 Prs3d_Root::CurrentGroup (thePresentation)->AddPrimitiveArray (aPrimSegments);
786 if (!aDimensionAspect->IsText3d() && theMode == ComputeMode_All)
787 {
788 Prs3d_Root::CurrentGroup (thePresentation)->SetStencilTestOptions (Standard_False);
789 }
d7bffd44 790
fe83e1ea 791 // add arrows to presentation
792 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 793
60bf98ae 794 DrawArrow (thePresentation, aFirstArrowBegin, aFirstArrowDir);
795 if (!theIsOneSide)
fe83e1ea 796 {
60bf98ae 797 DrawArrow (thePresentation, aSecondArrowBegin, aSecondArrowDir);
fe83e1ea 798 }
d7bffd44 799
fe83e1ea 800 if (!isArrowsExternal)
801 {
802 break;
803 }
d7bffd44 804
fe83e1ea 805 // add arrow extension lines to presentation
806 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 807
af203d54 808 DrawExtension (thePresentation, aDimensionAspect->ArrowTailSize(),
fe83e1ea 809 aFirstArrowEnd, aFirstExtensionDir,
810 THE_EMPTY_LABEL, 0.0, theMode, LabelPosition_None);
60bf98ae 811 if (!theIsOneSide)
fe83e1ea 812 {
af203d54 813 DrawExtension (thePresentation, aDimensionAspect->ArrowTailSize(),
fe83e1ea 814 aSecondArrowEnd, aSecondExtensionDir,
815 THE_EMPTY_LABEL, 0.0, theMode, LabelPosition_None);
816 }
a6eb515f 817 }
1d7ca641 818
819 break;
a6eb515f 820 }
d7bffd44 821 // ------------------------------------------------------------------------ //
822 // LEFT //
823 // -------------------------------------------------------------------------//
824
825 case LabelPosition_Left:
a6eb515f 826 {
d7bffd44 827 // add label on dimension or extension line to presentation
828 Prs3d_Root::NewGroup (thePresentation);
a6eb515f 829
a6eb515f 830 // Left extension with the text
60bf98ae 831 DrawExtension (thePresentation, anExtensionSize,
832 isArrowsExternal
833 ? aFirstArrowEnd
834 : aFirstArrowBegin,
d7bffd44 835 aFirstExtensionDir,
fe83e1ea 836 aLabelString,
837 aLabelWidth,
d7bffd44 838 theMode,
839 aLabelPosition);
840
fe83e1ea 841 // add dimension line primitives
842 if (theMode == ComputeMode_All || theMode == ComputeMode_Line)
d7bffd44 843 {
fe83e1ea 844 // add central dimension line
845 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 846
fe83e1ea 847 // add graphical primitives
848 Handle(Graphic3d_ArrayOfSegments) aPrimSegments = new Graphic3d_ArrayOfSegments (2);
849 aPrimSegments->AddVertex (aCenterLineBegin);
850 aPrimSegments->AddVertex (aCenterLineEnd);
d7bffd44 851
fe83e1ea 852 Prs3d_Root::CurrentGroup (thePresentation)->SetPrimitivesAspect (aDimensionAspect->LineAspect()->Aspect());
853 Prs3d_Root::CurrentGroup (thePresentation)->AddPrimitiveArray (aPrimSegments);
d7bffd44 854
fe83e1ea 855 // add selection primitives
856 SelectionGeometry::Curve& aSensitiveCurve = mySelectionGeom.NewCurve();
857 aSensitiveCurve.Append (aCenterLineBegin);
858 aSensitiveCurve.Append (aCenterLineEnd);
a6eb515f 859
fe83e1ea 860 // add arrows to presentation
861 Prs3d_Root::NewGroup (thePresentation);
a6eb515f 862
60bf98ae 863 DrawArrow (thePresentation, aFirstArrowBegin, aFirstArrowDir);
864 if (!theIsOneSide)
fe83e1ea 865 {
60bf98ae 866 DrawArrow (thePresentation, aSecondArrowBegin, aSecondArrowDir);
fe83e1ea 867 }
d7bffd44 868
60bf98ae 869 if (!isArrowsExternal || theIsOneSide)
fe83e1ea 870 {
871 break;
872 }
d7bffd44 873
fe83e1ea 874 // add extension lines for external arrows
875 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 876
af203d54 877 DrawExtension (thePresentation, aDimensionAspect->ArrowTailSize(),
fe83e1ea 878 aSecondArrowEnd, aSecondExtensionDir,
879 THE_EMPTY_LABEL, 0.0, theMode, LabelPosition_None);
880 }
d7bffd44 881
a6eb515f 882 break;
883 }
d7bffd44 884 // ------------------------------------------------------------------------ //
885 // RIGHT //
886 // -------------------------------------------------------------------------//
887
888 case LabelPosition_Right:
a6eb515f 889 {
d7bffd44 890 // add label on dimension or extension line to presentation
891 Prs3d_Root::NewGroup (thePresentation);
892
893 // Right extension with text
60bf98ae 894 DrawExtension (thePresentation, anExtensionSize,
895 isArrowsExternal
896 ? aSecondArrowEnd
897 : aSecondArrowBegin,
d7bffd44 898 aSecondExtensionDir,
fe83e1ea 899 aLabelString, aLabelWidth,
d7bffd44 900 theMode,
901 aLabelPosition);
902
fe83e1ea 903 if (theMode == ComputeMode_All || theMode == ComputeMode_Line)
a6eb515f 904 {
fe83e1ea 905 // add central dimension line
906 Prs3d_Root::NewGroup (thePresentation);
a6eb515f 907
fe83e1ea 908 // add graphical primitives
909 Handle(Graphic3d_ArrayOfSegments) aPrimSegments = new Graphic3d_ArrayOfSegments (2);
910 aPrimSegments->AddVertex (aCenterLineBegin);
911 aPrimSegments->AddVertex (aCenterLineEnd);
912 Prs3d_Root::CurrentGroup (thePresentation)->SetPrimitivesAspect (aDimensionAspect->LineAspect()->Aspect());
913 Prs3d_Root::CurrentGroup (thePresentation)->AddPrimitiveArray (aPrimSegments);
a6eb515f 914
fe83e1ea 915 // add selection primitives
916 SelectionGeometry::Curve& aSensitiveCurve = mySelectionGeom.NewCurve();
917 aSensitiveCurve.Append (aCenterLineBegin);
918 aSensitiveCurve.Append (aCenterLineEnd);
a6eb515f 919
fe83e1ea 920 // add arrows to presentation
921 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 922
60bf98ae 923 DrawArrow (thePresentation, aSecondArrowBegin, aSecondArrowDir);
924 if (!theIsOneSide)
fe83e1ea 925 {
60bf98ae 926 DrawArrow (thePresentation, aFirstArrowBegin, aFirstArrowDir);
fe83e1ea 927 }
d7bffd44 928
60bf98ae 929 if (!isArrowsExternal || theIsOneSide)
fe83e1ea 930 {
931 break;
932 }
a6eb515f 933
fe83e1ea 934 // add extension lines for external arrows
935 Prs3d_Root::NewGroup (thePresentation);
d7bffd44 936
af203d54 937 DrawExtension (thePresentation, aDimensionAspect->ArrowTailSize(),
fe83e1ea 938 aFirstArrowEnd, aFirstExtensionDir,
939 THE_EMPTY_LABEL, 0.0, theMode, LabelPosition_None);
940 }
d7bffd44 941
a6eb515f 942 break;
943 }
944 }
945
d7bffd44 946 // add flyout lines to presentation
fe83e1ea 947 if (theMode == ComputeMode_All)
d7bffd44 948 {
949 Prs3d_Root::NewGroup (thePresentation);
950
951 Handle(Graphic3d_ArrayOfSegments) aPrimSegments = new Graphic3d_ArrayOfSegments(4);
60bf98ae 952 aPrimSegments->AddVertex (theFirstPoint);
d7bffd44 953 aPrimSegments->AddVertex (aLineBegPoint);
954
60bf98ae 955 aPrimSegments->AddVertex (theSecondPoint);
d7bffd44 956 aPrimSegments->AddVertex (aLineEndPoint);
957
d7bffd44 958 Prs3d_Root::CurrentGroup (thePresentation)->SetPrimitivesAspect (aDimensionAspect->LineAspect()->Aspect());
959 Prs3d_Root::CurrentGroup (thePresentation)->AddPrimitiveArray (aPrimSegments);
960 }
961
91b16a64 962 mySelectionGeom.IsComputed = Standard_True;
a6eb515f 963}
964
965//=======================================================================
60bf98ae 966//function : ComputeLinearFlyouts
967//purpose :
a6eb515f 968//=======================================================================
60bf98ae 969void AIS_Dimension::ComputeLinearFlyouts (const Handle(SelectMgr_Selection)& theSelection,
970 const Handle(SelectMgr_EntityOwner)& theOwner,
971 const gp_Pnt& theFirstPoint,
972 const gp_Pnt& theSecondPoint)
a6eb515f 973{
60bf98ae 974 // count flyout direction
975 gp_Ax1 aPlaneNormal = GetPlane().Axis();
976 gp_Dir aTargetPointsVector = gce_MakeDir (theFirstPoint, theSecondPoint);
a6eb515f 977
60bf98ae 978 // count a flyout direction vector.
979 gp_Dir aFlyoutVector = aPlaneNormal.Direction() ^ aTargetPointsVector;
a6eb515f 980
60bf98ae 981 // create lines for layouts
982 gp_Lin aLine1 (theFirstPoint, aFlyoutVector);
983 gp_Lin aLine2 (theSecondPoint, aFlyoutVector);
984
985 // get flyout end points
986 gp_Pnt aFlyoutEnd1 = ElCLib::Value (ElCLib::Parameter (aLine1, theFirstPoint) + GetFlyout(), aLine1);
987 gp_Pnt aFlyoutEnd2 = ElCLib::Value (ElCLib::Parameter (aLine2, theSecondPoint) + GetFlyout(), aLine2);
988
989 // fill sensitive entity for flyouts
990 Handle(Select3D_SensitiveGroup) aSensitiveEntity = new Select3D_SensitiveGroup (theOwner);
991 aSensitiveEntity->Add (new Select3D_SensitiveSegment (theOwner, theFirstPoint, aFlyoutEnd1));
992 aSensitiveEntity->Add (new Select3D_SensitiveSegment (theOwner, theSecondPoint, aFlyoutEnd2));
993 theSelection->Add (aSensitiveEntity);
a6eb515f 994}
995
996//=======================================================================
60bf98ae 997//function : CircleFromPlanarFace
a6eb515f 998//purpose : if possible computes circle from planar face
999//=======================================================================
60bf98ae 1000Standard_Boolean AIS_Dimension::CircleFromPlanarFace (const TopoDS_Face& theFace,
a6eb515f 1001 Handle(Geom_Curve)& theCurve,
60bf98ae 1002 gp_Pnt& theFirstPoint,
1003 gp_Pnt& theLastPoint)
a6eb515f 1004{
1005 TopExp_Explorer anIt (theFace, TopAbs_EDGE);
1006 for ( ; anIt.More(); anIt.Next())
1007 {
1008 TopoDS_Edge aCurEdge = TopoDS::Edge (anIt.Current());
1009 if (AIS::ComputeGeometry (aCurEdge, theCurve, theFirstPoint, theLastPoint))
1010 {
1011 if (theCurve->IsInstance (STANDARD_TYPE(Geom_Circle)))
1012 {
1013 return Standard_True;
1014 }
1015 }
1016 }
1017 return Standard_False;
1018}
1019
0499eb06 1020//=======================================================================
1021//function : CircleFromEdge
1022//purpose : if possible computes circle from edge
1023//=======================================================================
1024Standard_Boolean AIS_Dimension::CircleFromEdge (const TopoDS_Edge& theEdge,
1025 gp_Circ& theCircle,
1026 gp_Pnt& theFirstPoint,
1027 gp_Pnt& theLastPoint)
1028{
1029 BRepAdaptor_Curve anAdaptedCurve (theEdge);
1030 switch (anAdaptedCurve.GetType())
1031 {
1032 case GeomAbs_Circle:
1033 {
1034 theCircle = anAdaptedCurve.Circle();
1035 break;
1036 }
1037 case GeomAbs_Ellipse:
1038 {
1039 gp_Elips anEll = anAdaptedCurve.Ellipse();
1040 if ((anEll.MinorRadius() - anEll.MajorRadius()) >= Precision::Confusion())
1041 {
1042 return Standard_False;
1043 }
1044 theCircle = gp_Circ(anEll.Position(),anEll.MinorRadius());
1045 break;
1046 }
1047 case GeomAbs_Line:
1048 case GeomAbs_Hyperbola:
1049 case GeomAbs_Parabola:
1050 case GeomAbs_BezierCurve:
1051 case GeomAbs_BSplineCurve:
1052 case GeomAbs_OtherCurve:
1053 default:
1054 return Standard_False;
1055 }
1056
1057 theFirstPoint = anAdaptedCurve.Value (anAdaptedCurve.FirstParameter());
1058 theLastPoint = anAdaptedCurve.Value (anAdaptedCurve.LastParameter());
1059 return Standard_True;
1060}
1061
a6eb515f 1062//=======================================================================
60bf98ae 1063//function : InitCircularDimension
1064//purpose :
a6eb515f 1065//=======================================================================
60bf98ae 1066Standard_Boolean AIS_Dimension::InitCircularDimension (const TopoDS_Shape& theShape,
a6eb515f 1067 gp_Circ& theCircle,
1068 gp_Pnt& theMiddleArcPoint,
60bf98ae 1069 Standard_Boolean& theIsClosed)
a6eb515f 1070{
1071 gp_Pln aPln;
1072 Handle(Geom_Surface) aBasisSurf;
1073 AIS_KindOfSurface aSurfType = AIS_KOS_OtherSurface;
1074 gp_Pnt aFirstPoint, aLastPoint;
1075 Standard_Real anOffset = 0.0;
1076 Standard_Real aFirstParam = 0.0;
1077 Standard_Real aLastParam = 0.0;
a6eb515f 1078
0499eb06 1079 // Discover circular geometry
1080 switch (theShape.ShapeType())
a6eb515f 1081 {
0499eb06 1082 case TopAbs_FACE:
a6eb515f 1083 {
0499eb06 1084 AIS::GetPlaneFromFace (TopoDS::Face (theShape), aPln, aBasisSurf, aSurfType, anOffset);
a6eb515f 1085
0499eb06 1086 if (aSurfType == AIS_KOS_Plane)
a6eb515f 1087 {
0499eb06 1088 Handle(Geom_Curve) aCurve;
1089 if (!CircleFromPlanarFace (TopoDS::Face (theShape), aCurve, aFirstPoint, aLastPoint))
1090 {
1091 return Standard_False;
1092 }
1093
1094 theCircle = Handle(Geom_Circle)::DownCast (aCurve)->Circ();
a6eb515f 1095 }
1096 else
1097 {
0499eb06 1098 gp_Pnt aCurPos;
1099 BRepAdaptor_Surface aSurf1 (TopoDS::Face (theShape));
1100 Standard_Real aFirstU = aSurf1.FirstUParameter();
1101 Standard_Real aLastU = aSurf1.LastUParameter();
1102 Standard_Real aFirstV = aSurf1.FirstVParameter();
1103 Standard_Real aLastV = aSurf1.LastVParameter();
1104 Standard_Real aMidU = (aFirstU + aLastU) * 0.5;
1105 Standard_Real aMidV = (aFirstV + aLastV) * 0.5;
1106 aSurf1.D0 (aMidU, aMidV, aCurPos);
1107 Handle (Adaptor3d_HCurve) aBasisCurve;
1108 Standard_Boolean isExpectedType = Standard_False;
1109 if (aSurfType == AIS_KOS_Cylinder)
a6eb515f 1110 {
0499eb06 1111 isExpectedType = Standard_True;
a6eb515f 1112 }
0499eb06 1113 else
a6eb515f 1114 {
0499eb06 1115 if (aSurfType == AIS_KOS_Revolution)
a6eb515f 1116 {
0499eb06 1117 aBasisCurve = aSurf1.BasisCurve();
1118 if (aBasisCurve->GetType() == GeomAbs_Line)
1119 {
1120 isExpectedType = Standard_True;
1121 }
1122 }
1123 else if (aSurfType == AIS_KOS_Extrusion)
1124 {
1125 aBasisCurve = aSurf1.BasisCurve();
1126 if (aBasisCurve->GetType() == GeomAbs_Circle)
1127 {
1128 isExpectedType = Standard_True;
1129 }
a6eb515f 1130 }
1131 }
a6eb515f 1132
0499eb06 1133 if (!isExpectedType)
1134 {
1135 return Standard_False;
1136 }
60bf98ae 1137
0499eb06 1138 Handle(Geom_Curve) aCurve = aBasisSurf->VIso(aMidV);
1139 if (aCurve->DynamicType() == STANDARD_TYPE (Geom_Circle))
a6eb515f 1140 {
0499eb06 1141 theCircle = Handle(Geom_Circle)::DownCast (aCurve)->Circ();
1142 }
1143 else if (aCurve->DynamicType() == STANDARD_TYPE (Geom_TrimmedCurve))
1144 {
1145 Handle(Geom_TrimmedCurve) aTrimmedCurve = Handle(Geom_TrimmedCurve)::DownCast (aCurve);
1146 aFirstU = aTrimmedCurve->FirstParameter();
1147 aLastU = aTrimmedCurve->LastParameter();
1148 if (aTrimmedCurve->BasisCurve()->DynamicType() == STANDARD_TYPE (Geom_Circle))
1149 {
1150 theCircle = Handle(Geom_Circle)::DownCast(aTrimmedCurve->BasisCurve())->Circ();
1151 }
1152 }
1153 else
1154 {
1155 // Compute a circle from 3 points on "aCurve"
1156 gp_Pnt aP1, aP2;
1157 aSurf1.D0 (aFirstU, aMidV, aP1);
1158 aSurf1.D0 (aLastU, aMidV, aP2);
1159 GC_MakeCircle aMkCirc (aP1, aCurPos, aP2);
1160 theCircle = aMkCirc.Value()->Circ();
a6eb515f 1161 }
a6eb515f 1162
0499eb06 1163 aFirstPoint = ElCLib::Value (aFirstU, theCircle);
1164 aLastPoint = ElCLib::Value (aLastU, theCircle);
1165 }
1166 break;
a6eb515f 1167 }
0499eb06 1168 case TopAbs_WIRE:
a6eb515f 1169 {
0499eb06 1170 TopoDS_Edge anEdge;
a6eb515f 1171 TopExp_Explorer anIt (theShape, TopAbs_EDGE);
1172 if (anIt.More())
1173 {
1174 anEdge = TopoDS::Edge (anIt.Current());
1175 }
0499eb06 1176 if (!AIS_Dimension::CircleFromEdge (anEdge, theCircle, aFirstPoint, aLastPoint))
1177 {
1178 return Standard_False;
1179 }
1180 break;
a6eb515f 1181 }
0499eb06 1182 case TopAbs_EDGE:
a6eb515f 1183 {
0499eb06 1184 TopoDS_Edge anEdge = TopoDS::Edge (theShape);
1185 if (!AIS_Dimension::CircleFromEdge (anEdge, theCircle, aFirstPoint, aLastPoint))
1186 {
1187 return Standard_False;
1188 }
1189 break;
a6eb515f 1190 }
0499eb06 1191 case TopAbs_COMPOUND:
1192 case TopAbs_COMPSOLID:
1193 case TopAbs_SOLID:
1194 case TopAbs_SHELL:
1195 case TopAbs_VERTEX:
1196 case TopAbs_SHAPE:
1197 default:
a6eb515f 1198 return Standard_False;
a6eb515f 1199 }
60bf98ae 1200
1201 theIsClosed = aFirstPoint.IsEqual (aLastPoint, Precision::Confusion());
1202
a6eb515f 1203 gp_Pnt aCenter = theCircle.Location();
60bf98ae 1204
1205 if (theIsClosed) // Circle
a6eb515f 1206 {
a6eb515f 1207 gp_Dir anXDir = theCircle.XAxis().Direction();
1208 theMiddleArcPoint = aCenter.Translated (gp_Vec (anXDir) * theCircle.Radius());
a6eb515f 1209 }
60bf98ae 1210 else // Arc
a6eb515f 1211 {
a6eb515f 1212 aFirstParam = ElCLib::Parameter (theCircle, aFirstPoint);
1213 aLastParam = ElCLib::Parameter (theCircle, aLastPoint);
1214 if (aFirstParam > aLastParam)
1215 {
1216 aFirstParam -= 2.0 * M_PI;
1217 }
60bf98ae 1218
a6eb515f 1219 Standard_Real aParCurPos = (aFirstParam + aLastParam) * 0.5;
1220 gp_Vec aVec = gp_Vec (aCenter, ElCLib::Value (aParCurPos, theCircle)).Normalized () * theCircle.Radius ();
1221 theMiddleArcPoint = aCenter.Translated (aVec);
a6eb515f 1222 }
1223
1224 return Standard_True;
1225}
1226
a6eb515f 1227//=======================================================================
1228//function : ComputeSelection
1229//purpose :
1230//=======================================================================
a6eb515f 1231void AIS_Dimension::ComputeSelection (const Handle(SelectMgr_Selection)& theSelection,
1232 const Standard_Integer theMode)
1233{
91b16a64 1234 if (!mySelectionGeom.IsComputed)
a6eb515f 1235 {
1236 return;
1237 }
1238
fe83e1ea 1239 AIS_DimensionSelectionMode aSelectionMode = (AIS_DimensionSelectionMode)theMode;
a6eb515f 1240
fe83e1ea 1241 // init appropriate entity owner
1242 Handle(SelectMgr_EntityOwner) aSensitiveOwner;
a6eb515f 1243
fe83e1ea 1244 switch (aSelectionMode)
a6eb515f 1245 {
fe83e1ea 1246 // neutral selection owner
1247 case AIS_DSM_All :
1248 aSensitiveOwner = new SelectMgr_EntityOwner (this, THE_NEUTRAL_SEL_PRIORITY);
1249 break;
1250
1251 // local selection owners
1252 case AIS_DSM_Line :
1253 case AIS_DSM_Text :
1254 aSensitiveOwner = new AIS_DimensionOwner (this, aSelectionMode, THE_LOCAL_SEL_PRIORITY);
1255 break;
a6eb515f 1256 }
fe83e1ea 1257
1258 if (aSelectionMode == AIS_DSM_All || aSelectionMode == AIS_DSM_Line)
a6eb515f 1259 {
fe83e1ea 1260 // sensitives for dimension line segments
1261 Handle(Select3D_SensitiveGroup) aGroupOfSensitives = new Select3D_SensitiveGroup (aSensitiveOwner);
1262
1263 SelectionGeometry::SeqOfCurves::Iterator aCurveIt (mySelectionGeom.DimensionLine);
1264 for (; aCurveIt.More(); aCurveIt.Next())
1265 {
1266 const SelectionGeometry::HCurve& aCurveData = aCurveIt.Value();
1267
1268 TColgp_Array1OfPnt aSensitivePnts (1, aCurveData->Length());
1269 for (Standard_Integer aPntIt = 1; aPntIt <= aCurveData->Length(); ++aPntIt)
1270 {
1271 aSensitivePnts.ChangeValue (aPntIt) = aCurveData->Value (aPntIt);
1272 }
1273
1274 aGroupOfSensitives->Add (new Select3D_SensitiveCurve (aSensitiveOwner, aSensitivePnts));
1275 }
1276
1277 Quantity_Length anArrowLength = myDrawer->DimensionAspect()->ArrowAspect()->Length();
1278 Standard_Real anArrowAngle = myDrawer->DimensionAspect()->ArrowAspect()->Angle();
1279
1280 // sensitives for arrows
1281 SelectionGeometry::SeqOfArrows::Iterator anArrowIt (mySelectionGeom.Arrows);
1282 for (; anArrowIt.More(); anArrowIt.Next())
1283 {
1284 const SelectionGeometry::HArrow& anArrow = anArrowIt.Value();
1285
1286 gp_Pnt aSidePnt1 (gp::Origin());
1287 gp_Pnt aSidePnt2 (gp::Origin());
60bf98ae 1288 const gp_Dir& aPlane = GetPlane().Axis().Direction();
fe83e1ea 1289 const gp_Pnt& aPeak = anArrow->Position;
1290 const gp_Dir& aDir = anArrow->Direction;
1291
1292 // compute points for arrow in plane
1293 PointsForArrow (aPeak, aDir, aPlane, anArrowLength, anArrowAngle, aSidePnt1, aSidePnt2);
1294
1295 aGroupOfSensitives->Add (new Select3D_SensitiveTriangle (aSensitiveOwner, aPeak, aSidePnt1, aSidePnt2));
1296
1297 if (!myDrawer->DimensionAspect()->IsArrows3d())
1298 {
1299 continue;
1300 }
1301
1302 // compute points for orthogonal sensitive plane
1303 gp_Dir anOrthoPlane = anArrow->Direction.Crossed (aPlane);
1304
1305 PointsForArrow (aPeak, aDir, anOrthoPlane, anArrowLength, anArrowAngle, aSidePnt1, aSidePnt2);
1306
1307 aGroupOfSensitives->Add (new Select3D_SensitiveTriangle (aSensitiveOwner, aPeak, aSidePnt1, aSidePnt2));
1308 }
1309
1310 theSelection->Add (aGroupOfSensitives);
a6eb515f 1311 }
fe83e1ea 1312
1313 // sensitives for text element
1314 if (aSelectionMode == AIS_DSM_All || aSelectionMode == AIS_DSM_Text)
a6eb515f 1315 {
fe83e1ea 1316 Handle(Select3D_SensitiveEntity) aTextSensitive;
1317
1318 gp_Ax2 aTextAxes (mySelectionGeom.TextPos,
60bf98ae 1319 GetPlane().Axis().Direction(),
fe83e1ea 1320 mySelectionGeom.TextDir);
1321
1322 if (myDrawer->DimensionAspect()->IsText3d())
1323 {
1324 // sensitive planar rectangle for text
1325 Standard_Real aDx = mySelectionGeom.TextWidth * 0.5;
1326 Standard_Real aDy = mySelectionGeom.TextHeight * 0.5;
1327
1328 gp_Trsf aLabelPlane;
1329 aLabelPlane.SetTransformation (aTextAxes, gp::XOY());
1330
51f8f60c 1331 TColgp_Array1OfPnt aRectanglePoints(1, 4);
1332 aRectanglePoints.ChangeValue(1) = gp_Pnt (-aDx, -aDy, 0.0).Transformed (aLabelPlane);
1333 aRectanglePoints.ChangeValue(2) = gp_Pnt (-aDx, aDy, 0.0).Transformed (aLabelPlane);
1334 aRectanglePoints.ChangeValue(3) = gp_Pnt ( aDx, aDy, 0.0).Transformed (aLabelPlane);
1335 aRectanglePoints.ChangeValue(4) = gp_Pnt ( aDx, -aDy, 0.0).Transformed (aLabelPlane);
fe83e1ea 1336
51f8f60c 1337 Poly_Array1OfTriangle aTriangles(1, 2);
1338 aTriangles.ChangeValue(1) = Poly_Triangle(1, 2, 3);
1339 aTriangles.ChangeValue(2) = Poly_Triangle(1, 3, 4);
1340
1341 Handle(Poly_Triangulation) aRectanglePoly =
1342 new Poly_Triangulation(aRectanglePoints, aTriangles);
1343
1344 aTextSensitive =
1345 new Select3D_SensitiveTriangulation (aSensitiveOwner, aRectanglePoly, TopLoc_Location(), Standard_True);
fe83e1ea 1346 }
1347 else
1348 {
1349 gp_Circ aTextGeom (aTextAxes, mySelToleranceForText2d != 0.0
1350 ? mySelToleranceForText2d : 1.0);
1351
1352 Handle(Geom_Circle) aSensGeom = new Geom_Circle (aTextGeom);
1353
1354 aTextSensitive = new Select3D_SensitiveCircle (aSensitiveOwner, aSensGeom, Standard_True);
1355 }
1356
1357 theSelection->Add (aTextSensitive);
a6eb515f 1358 }
fe83e1ea 1359
1360 // callback for flyout sensitive calculation
1361 if (aSelectionMode == AIS_DSM_All)
d7bffd44 1362 {
60bf98ae 1363 ComputeFlyoutSelection (theSelection, aSensitiveOwner);
d7bffd44 1364 }
fe83e1ea 1365}
1366
1367//=======================================================================
1368//function : PointsForArrow
1369//purpose :
1370//=======================================================================
1371void AIS_Dimension::PointsForArrow (const gp_Pnt& thePeakPnt,
1372 const gp_Dir& theDirection,
1373 const gp_Dir& thePlane,
1374 const Standard_Real theArrowLength,
1375 const Standard_Real theArrowAngle,
1376 gp_Pnt& theSidePnt1,
1377 gp_Pnt& theSidePnt2)
1378{
1379 gp_Lin anArrowLin (thePeakPnt, theDirection.Reversed());
1380 gp_Pnt anArrowEnd = ElCLib::Value (theArrowLength, anArrowLin);
1381 gp_Lin anEdgeLin (anArrowEnd, theDirection.Crossed (thePlane));
1382
1383 Standard_Real anEdgeLength = Tan (theArrowAngle) * theArrowLength;
a6eb515f 1384
fe83e1ea 1385 theSidePnt1 = ElCLib::Value ( anEdgeLength, anEdgeLin);
1386 theSidePnt2 = ElCLib::Value (-anEdgeLength, anEdgeLin);
a6eb515f 1387}
af203d54 1388
1389//=======================================================================
1390//function : GetTextPositionForLinear
1391//purpose :
1392//=======================================================================
1393gp_Pnt AIS_Dimension::GetTextPositionForLinear (const gp_Pnt& theFirstPoint,
1394 const gp_Pnt& theSecondPoint,
1395 const Standard_Boolean theIsOneSide) const
1396{
91b16a64 1397 if (!IsValid())
af203d54 1398 {
1399 return gp::Origin();
1400 }
1401
1402 gp_Pnt aTextPosition (gp::Origin());
1403
1404 Handle(Prs3d_DimensionAspect) aDimensionAspect = myDrawer->DimensionAspect();
1405
1406 // Get label alignment and arrow orientation.
1407 Standard_Integer aLabelPosition = 0;
1408 Standard_Boolean isArrowsExternal = Standard_False;
1409 FitTextAlignmentForLinear (theFirstPoint, theSecondPoint, theIsOneSide,
1410 aDimensionAspect->TextHorizontalPosition(),
1411 aLabelPosition, isArrowsExternal);
1412
1413 // Compute dimension line points.
1414 gp_Dir aPlaneNormal = GetPlane().Axis().Direction();
1415 gp_Vec aTargetPointsVec (theFirstPoint, theSecondPoint);
1416
1417 // Compute flyout direction vector
1418 gp_Dir aFlyoutVector = aPlaneNormal ^ gp_Dir (aTargetPointsVec);
1419
1420 // create lines for layouts
1421 gp_Lin aLine1 (theFirstPoint, aFlyoutVector);
1422 gp_Lin aLine2 (theSecondPoint, aFlyoutVector);
1423 // Get flyout end points
1424 gp_Pnt aLineBegPoint = ElCLib::Value (ElCLib::Parameter (aLine1, theFirstPoint) + GetFlyout(), aLine1);
1425 gp_Pnt aLineEndPoint = ElCLib::Value (ElCLib::Parameter (aLine2, theSecondPoint) + GetFlyout(), aLine2);
1426
1427 // Get text position.
1428 switch (aLabelPosition & LabelPosition_HMask)
1429 {
1430 case LabelPosition_Left:
1431 {
1432 gp_Dir aTargetPointsDir = gce_MakeDir (theFirstPoint, theSecondPoint);
1433 Standard_Real anExtensionSize = aDimensionAspect->ExtensionSize();
1434
1435 Standard_Real anOffset = isArrowsExternal
1436 ? anExtensionSize + aDimensionAspect->ArrowAspect()->Length()
1437 : anExtensionSize;
1438 gp_Vec anExtensionVec = gp_Vec (aTargetPointsDir) * -anOffset;
1439 aTextPosition = aLineEndPoint.Translated (anExtensionVec);
1440 }
1441 break;
1442 case LabelPosition_Right:
1443 {
1444 gp_Dir aTargetPointsDir = gce_MakeDir (theFirstPoint, theSecondPoint);
1445 Standard_Real anExtensionSize = aDimensionAspect->ExtensionSize();
1446
1447 Standard_Real anOffset = isArrowsExternal
1448 ? anExtensionSize + aDimensionAspect->ArrowAspect()->Length()
1449 : anExtensionSize;
1450 gp_Vec anExtensionVec = gp_Vec (aTargetPointsDir) * anOffset;
1451 aTextPosition = aLineBegPoint.Translated (anExtensionVec);
1452 }
1453 break;
1454 case LabelPosition_HCenter:
1455 {
1456 aTextPosition = (aLineBegPoint.XYZ() + aLineEndPoint.XYZ()) * 0.5;
1457 }
1458 break;
1459 }
1460
1461 return aTextPosition;
1462}
1463
1464//=======================================================================
91b16a64 1465//function : AdjustParametersForLinear
af203d54 1466//purpose :
1467//=======================================================================
91b16a64 1468Standard_Boolean AIS_Dimension::AdjustParametersForLinear (const gp_Pnt& theTextPos,
1469 const gp_Pnt& theFirstPoint,
1470 const gp_Pnt& theSecondPoint,
1471 Standard_Real& theExtensionSize,
1472 Prs3d_DimensionTextHorizontalPosition& theAlignment,
1473 Standard_Real& theFlyout,
1474 gp_Pln& thePlane,
1475 Standard_Boolean& theIsPlaneOld) const
af203d54 1476{
1477 Handle(Prs3d_DimensionAspect) aDimensionAspect = myDrawer->DimensionAspect();
1478 Standard_Real anArrowLength = aDimensionAspect->ArrowAspect()->Length();
1479
af203d54 1480 gp_Dir aTargetPointsDir = gce_MakeDir (theFirstPoint, theSecondPoint);
1481 gp_Vec aTargetPointsVec (theFirstPoint, theSecondPoint);
1482
91b16a64 1483 // Don't set new plane if the text position lies on the attachment points line.
1484 gp_Lin aTargetPointsLin (theFirstPoint, aTargetPointsDir);
1485 if (!aTargetPointsLin.Contains (theTextPos, Precision::Confusion()))
1486 {
1487 //Set new automatic plane.
1488 thePlane = gce_MakePln (theTextPos, theFirstPoint, theSecondPoint);
1489 theIsPlaneOld = Standard_False;
1490 }
1491
af203d54 1492 // Compute flyout direction vector.
91b16a64 1493 gp_Dir aPlaneNormal = GetPlane().Axis().Direction();
af203d54 1494 gp_Dir aPositiveFlyout = aPlaneNormal ^ aTargetPointsDir;
1495
91b16a64 1496 // Additional check of collinearity of the plane normal and attachment points vector.
1497 if (aPlaneNormal.IsParallel (aTargetPointsDir, Precision::Angular()))
1498 {
1499 return Standard_False;
1500 }
1501
af203d54 1502 // Set flyout.
1503 gp_Vec aFirstToTextVec (theFirstPoint, theTextPos);
1504
1505 Standard_Real aCos = aFirstToTextVec.Normalized() * gp_Vec (aTargetPointsDir);
1506
1507 gp_Pnt aTextPosProj = theFirstPoint.Translated
1508 (gp_Vec (aTargetPointsDir) * aFirstToTextVec.Magnitude() * aCos);
1509
1510 // Compute flyout value and direction.
1511 gp_Vec aFlyoutVector = gp_Vec (aTextPosProj, theTextPos);
1512
91b16a64 1513 theFlyout = 0.0;
1514 if (aFlyoutVector.Magnitude() > Precision::Confusion())
1515 {
1516 theFlyout = gp_Dir (aFlyoutVector).IsOpposite (aPositiveFlyout, Precision::Angular())
1517 ? -aFlyoutVector.Magnitude()
1518 : aFlyoutVector.Magnitude();
1519 }
1520
af203d54 1521 // Compute attach points (through which main dimension line passes).
1522 gp_Pnt aFirstAttach = theFirstPoint.Translated (aFlyoutVector);
1523 gp_Pnt aSecondAttach = theSecondPoint.Translated (aFlyoutVector);
1524
91b16a64 1525 // Set horizontal text alignment.
af203d54 1526 if (aCos < 0.0)
1527 {
1528 theAlignment = Prs3d_DTHP_Left;
1529
1530 Standard_Real aNewExtSize = theTextPos.Distance (aFirstAttach) - anArrowLength;
1531 theExtensionSize = aNewExtSize < 0.0 ? 0.0 : aNewExtSize;
1532 }
1533 else if (aTextPosProj.Distance (theFirstPoint) > theFirstPoint.Distance (theSecondPoint))
1534 {
1535 theAlignment = Prs3d_DTHP_Right;
1536
1537 Standard_Real aNewExtSize = theTextPos.Distance (aSecondAttach) - anArrowLength;
1538 theExtensionSize = aNewExtSize < 0.0 ? 0.0 : aNewExtSize;
1539 }
1540 else
1541 {
1542 theAlignment = Prs3d_DTHP_Center;
1543 }
91b16a64 1544 return Standard_True;
af203d54 1545}
1546
1547//=======================================================================
1548//function : FitTextAlignmentForLinear
1549//purpose :
1550//=======================================================================
1551void AIS_Dimension::FitTextAlignmentForLinear (const gp_Pnt& theFirstPoint,
1552 const gp_Pnt& theSecondPoint,
1553 const Standard_Boolean theIsOneSide,
1554 const Prs3d_DimensionTextHorizontalPosition& theHorizontalTextPos,
1555 Standard_Integer& theLabelPosition,
1556 Standard_Boolean& theIsArrowsExternal) const
1557{
1558 theLabelPosition = LabelPosition_None;
1559 theIsArrowsExternal = Standard_False;
1560
1561 // Compute dimension line points
1562 gp_Ax1 aPlaneNormal = GetPlane().Axis();
1563 gp_Dir aTargetPointsVector = gce_MakeDir (theFirstPoint, theSecondPoint);
1564
1565 // compute flyout direction vector
1566 gp_Dir aFlyoutVector = aPlaneNormal.Direction() ^ aTargetPointsVector;
1567
1568 // create lines for layouts
1569 gp_Lin aLine1 (theFirstPoint, aFlyoutVector);
1570 gp_Lin aLine2 (theSecondPoint, aFlyoutVector);
1571
1572 // Get flyout end points
1573 gp_Pnt aLineBegPoint = ElCLib::Value (ElCLib::Parameter (aLine1, theFirstPoint) + GetFlyout(), aLine1);
1574 gp_Pnt aLineEndPoint = ElCLib::Value (ElCLib::Parameter (aLine2, theSecondPoint) + GetFlyout(), aLine2);
1575
1576 Handle(Prs3d_DimensionAspect) aDimensionAspect = myDrawer->DimensionAspect();
1577
af203d54 1578 // For extensions we need to know arrow size, text size and extension size: get it from aspect
1579 Quantity_Length anArrowLength = aDimensionAspect->ArrowAspect()->Length();
1580
1581 // prepare label string and compute its geometrical width
1582 Standard_Real aLabelWidth;
1583 TCollection_ExtendedString aLabelString = GetValueString (aLabelWidth);
1584
1585 // Add margins to cut dimension lines for 3d text
1586 if (aDimensionAspect->IsText3d())
1587 {
1588 aLabelWidth += aDimensionAspect->TextAspect()->Height() * THE_3D_TEXT_MARGIN * 2.0;
1589 }
1590
1591 // Handle user-defined and automatic arrow placement
1592 switch (aDimensionAspect->ArrowOrientation())
1593 {
1594 case Prs3d_DAO_External: theIsArrowsExternal = true; break;
1595 case Prs3d_DAO_Internal: theIsArrowsExternal = false; break;
1596 case Prs3d_DAO_Fit:
1597 {
1598 // Add margin to ensure a small tail between text and arrow
1599 Standard_Real anArrowMargin = aDimensionAspect->IsText3d()
1600 ? aDimensionAspect->TextAspect()->Height() * THE_3D_TEXT_MARGIN
1601 : 0.0;
1602
1603 Standard_Real aDimensionWidth = aLineBegPoint.Distance (aLineEndPoint);
1604 Standard_Real anArrowsWidth = theIsOneSide
1605 ? anArrowLength + anArrowMargin
1606 : (anArrowLength + anArrowMargin) * 2.0;
1607
1608 theIsArrowsExternal = aDimensionWidth < aLabelWidth + anArrowsWidth;
1609 break;
1610 }
1611 }
1612
1613 // Handle user-defined and automatic text placement
1614 switch (theHorizontalTextPos)
1615 {
1616 case Prs3d_DTHP_Left : theLabelPosition |= LabelPosition_Left; break;
1617 case Prs3d_DTHP_Right : theLabelPosition |= LabelPosition_Right; break;
1618 case Prs3d_DTHP_Center: theLabelPosition |= LabelPosition_HCenter; break;
1619 case Prs3d_DTHP_Fit:
1620 {
1621 Standard_Real aDimensionWidth = aLineBegPoint.Distance (aLineEndPoint);
1622 Standard_Real anArrowsWidth = theIsOneSide ? anArrowLength : 2.0 * anArrowLength;
1623 Standard_Real aContentWidth = theIsArrowsExternal ? aLabelWidth : aLabelWidth + anArrowsWidth;
1624
1625 theLabelPosition |= aDimensionWidth < aContentWidth ? LabelPosition_Left : LabelPosition_HCenter;
1626 break;
1627 }
1628 }
1629
1630 // Handle vertical text placement options
1631 switch (aDimensionAspect->TextVerticalPosition())
1632 {
1633 case Prs3d_DTVP_Above : theLabelPosition |= LabelPosition_Above; break;
1634 case Prs3d_DTVP_Below : theLabelPosition |= LabelPosition_Below; break;
1635 case Prs3d_DTVP_Center : theLabelPosition |= LabelPosition_VCenter; break;
1636 }
1637}
1638
1639//=======================================================================
1640//function : UnsetFixedTextPosition
1641//purpose :
1642//=======================================================================
1643void AIS_Dimension::UnsetFixedTextPosition()
1644{
1645 myIsTextPositionFixed = Standard_False;
1646 myFixedTextPosition = gp::Origin();
1647}
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