1 // Created on: 1992-01-17
3 // Copyright (c) 1992-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _V3d_Viewer_HeaderFile
18 #define _V3d_Viewer_HeaderFile
20 #include <Aspect_Background.hxx>
21 #include <Aspect_GenId.hxx>
22 #include <Aspect_GradientBackground.hxx>
23 #include <Aspect_GradientFillMethod.hxx>
24 #include <Aspect_GridDrawMode.hxx>
25 #include <Aspect_GridType.hxx>
28 #include <Graphic3d_StructureManager.hxx>
29 #include <Graphic3d_Vertex.hxx>
30 #include <Graphic3d_ZLayerSettings.hxx>
32 #include <Standard.hxx>
33 #include <Standard_Boolean.hxx>
34 #include <Standard_CString.hxx>
35 #include <Standard_ExtString.hxx>
36 #include <Standard_Integer.hxx>
37 #include <Standard_Real.hxx>
38 #include <Standard_Type.hxx>
40 #include <TColStd_MapOfInteger.hxx>
41 #include <TColStd_ListIteratorOfListOfTransient.hxx>
42 #include <TColStd_SequenceOfInteger.hxx>
43 #include <TCollection_AsciiString.hxx>
44 #include <TCollection_ExtendedString.hxx>
46 #include <V3d_ListOfLight.hxx>
47 #include <V3d_ListOfView.hxx>
48 #include <V3d_TypeOfOrientation.hxx>
49 #include <V3d_TypeOfShadingModel.hxx>
50 #include <V3d_TypeOfUpdate.hxx>
51 #include <V3d_TypeOfView.hxx>
52 #include <V3d_TypeOfVisualization.hxx>
54 #include <Quantity_Color.hxx>
55 #include <Quantity_Length.hxx>
56 #include <Quantity_Parameter.hxx>
57 #include <Quantity_PlaneAngle.hxx>
58 #include <Quantity_TypeOfColor.hxx>
61 class Graphic3d_AspectMarker3d;
62 class Graphic3d_GraphicDriver;
63 class Graphic3d_Group;
64 class Graphic3d_Structure;
66 class V3d_CircularGrid;
68 class V3d_RectangularGrid;
72 //! Defines services on Viewer type objects.
73 //! The methods of this class allow editing and
74 //! interrogation of the parameters linked to the viewer
75 //! its friend classes (View,light,plane).
76 class V3d_Viewer : public Standard_Transient
78 friend class V3d_View;
79 friend class V3d_Light;
80 DEFINE_STANDARD_RTTIEXT(V3d_Viewer, Standard_Transient)
83 //! Create a Viewer with the given graphic driver and with default parameters:
84 //! - View orientation: V3d_XposYnegZpos
85 //! - View background: Quantity_NOC_GRAY30
86 //! - Shading model: V3d_GOURAUD
87 Standard_EXPORT V3d_Viewer (const Handle(Graphic3d_GraphicDriver)& theDriver);
89 //! Returns True if One View more can be defined in this Viewer.
90 Standard_EXPORT Standard_Boolean IfMoreViews() const;
92 //! Creates a view in the viewer according to its default parameters.
93 Standard_EXPORT Handle(V3d_View) CreateView();
95 //! Activates all of the views of a viewer attached to a window.
96 Standard_EXPORT void SetViewOn();
98 //! Activates a particular view in the Viewer.
99 //! Must be call if the Window attached to the view has been Deiconified.
100 Standard_EXPORT void SetViewOn (const Handle(V3d_View)& theView);
102 //! Deactivates all the views of a Viewer
103 //! attached to a window.
104 Standard_EXPORT void SetViewOff();
106 //! Deactivates a particular view in the Viewer.
107 //! Must be call if the Window attached to the view
108 //! has been Iconified .
109 Standard_EXPORT void SetViewOff (const Handle(V3d_View)& theView);
111 //! Deprecated, Redraw() should be used instead.
112 void Update() { Redraw(); }
114 //! Redraws all the views of the Viewer even if no
115 //! modification has taken place. Must be called if
116 //! all the views of the Viewer are exposed, as for
117 //! example in a global DeIconification.
118 Standard_EXPORT void Redraw() const;
120 //! Updates layer of immediate presentations.
121 Standard_EXPORT void RedrawImmediate() const;
123 //! Invalidates viewer content but does not redraw it.
124 Standard_EXPORT void Invalidate() const;
126 //! Suppresses the Viewer.
127 Standard_EXPORT void Remove();
129 //! Return Graphic Driver instance.
130 const Handle(Graphic3d_GraphicDriver)& Driver() const { return myDriver; }
132 //! Returns the structure manager associated to this viewer.
133 Handle(Graphic3d_StructureManager) StructureManager() const { return myStructureManager; }
135 //! Return default Rendering Parameters.
136 //! By default these parameters are set in a new V3d_View.
137 const Graphic3d_RenderingParams& DefaultRenderingParams() const { return myDefaultRenderingParams; }
139 //! Set default Rendering Parameters.
140 void SetDefaultRenderingParams (const Graphic3d_RenderingParams& theParams) { myDefaultRenderingParams = theParams; }
142 //! Defines the default background colour of views
143 //! attached to the viewer by supplying the name of the
144 //! colour under the form Quantity_NOC_xxxx .
145 void SetDefaultBackgroundColor (const Quantity_NameOfColor theName) { myBackground.SetColor (Quantity_Color (theName)); }
147 //! Defines the default background colour of views
148 //! attached to the viewer by supplying the color object
149 void SetDefaultBackgroundColor (const Quantity_Color& theColor) { myBackground.SetColor (theColor); }
151 //! Returns the gradient background of the view.
152 const Aspect_GradientBackground& GetGradientBackground() const { return myGradientBackground; }
154 //! Defines the default gradient background colours of view
155 //! attached to the viewer by supplying the name of the
156 //! colours under the form Quantity_NOC_xxxx .
157 void SetDefaultBgGradientColors (const Quantity_NameOfColor theName1,
158 const Quantity_NameOfColor theName2,
159 const Aspect_GradientFillMethod theFillStyle = Aspect_GFM_HOR)
161 myGradientBackground.SetColors (Quantity_Color (theName1), Quantity_Color (theName2), theFillStyle);
164 //! Defines the default gradient background colours of views
165 //! attached to the viewer by supplying the colour objects
166 void SetDefaultBgGradientColors (const Quantity_Color& theColor1,
167 const Quantity_Color& theColor2,
168 const Aspect_GradientFillMethod theFillStyle = Aspect_GFM_HOR)
170 myGradientBackground.SetColors (theColor1, theColor2, theFillStyle);
173 //! Returns the default size of the view.
174 Standard_Real DefaultViewSize() const { return myViewSize; }
176 //! Gives a default size for the creation of views of the viewer.
177 Standard_EXPORT void SetDefaultViewSize (const Standard_Real theSize);
179 //! Returns the default Projection.
180 V3d_TypeOfOrientation DefaultViewProj() const { return myViewProj; }
182 //! Sets the default projection for creating views in the viewer.
183 void SetDefaultViewProj (const V3d_TypeOfOrientation theOrientation) { myViewProj = theOrientation; }
185 //! Returns the default type of Visualization.
186 V3d_TypeOfVisualization DefaultVisualization() const { return myVisualization; }
188 //! Gives the default visualization mode.
189 void SetDefaultVisualization (const V3d_TypeOfVisualization theType) { myVisualization = theType; }
191 //! Returns the default type of Shading
192 V3d_TypeOfShadingModel DefaultShadingModel() const { return myShadingModel; }
194 //! Gives the default type of SHADING.
195 void SetDefaultShadingModel (const V3d_TypeOfShadingModel theType) { myShadingModel = theType; }
197 //! Returns the regeneration mode of views in the viewer.
198 Standard_EXPORT V3d_TypeOfUpdate UpdateMode() const;
200 //! Defines the mode of regenerating the views making
201 //! up the viewer. This can be immediate <ASAP> or
202 //! deferred <WAIT>. In this latter case, the views are
203 //! updated when the method Update(me) is called.
204 Standard_EXPORT void SetUpdateMode (const V3d_TypeOfUpdate theMode);
206 void SetDefaultTypeOfView (const V3d_TypeOfView theType) { myDefaultTypeOfView = theType; }
208 //! Returns the default background colour object.
209 Quantity_Color DefaultBackgroundColor() const { return myBackground.Color(); }
211 //! Returns the gradient background colour objects of the view.
212 void DefaultBgGradientColors (Quantity_Color& theColor1, Quantity_Color& theColor2) const { myGradientBackground.Colors (theColor1, theColor2); }
214 //! Return all Z layer ids in sequence ordered by overlay level from lowest layer to highest ( foreground ).
215 //! The first layer ID in sequence is the default layer that can't be removed.
216 Standard_EXPORT void GetAllZLayers (TColStd_SequenceOfInteger& theLayerSeq) const;
218 //! Add a new top-level Z layer to all managed views and get its ID as <theLayerId> value.
219 //! The Z layers are controlled entirely by viewer, it is not possible to add a layer to a particular view.
220 //! The method returns Standard_False if the layer can not be created.
221 //! The layer mechanism allows to display structures in higher layers in overlay of structures in lower layers.
222 Standard_EXPORT Standard_Boolean AddZLayer (Standard_Integer& theLayerId);
224 //! Remove Z layer with ID <theLayerId>.
225 //! Method returns Standard_False if the layer can not be removed or doesn't exists.
226 //! By default, there are always default bottom-level layer that can't be removed.
227 Standard_EXPORT Standard_Boolean RemoveZLayer (const Standard_Integer theLayerId);
229 //! Returns the settings of a single Z layer.
230 Standard_EXPORT Graphic3d_ZLayerSettings ZLayerSettings (const Standard_Integer theLayerId);
232 //! Sets the settings for a single Z layer.
233 Standard_EXPORT void SetZLayerSettings (const Standard_Integer theLayerId, const Graphic3d_ZLayerSettings& theSettings);
237 //! Return an iterator for active views.
238 V3d_ListOfViewIterator ActiveViewIterator() const { return V3d_ListOfViewIterator (myActiveViews); }
240 //! Initializes an internal iterator on the active views.
241 void InitActiveViews() { myActiveViewsIterator.Initialize (myActiveViews); }
243 //! Returns true if there are more active view(s) to return.
244 Standard_Boolean MoreActiveViews() const { return myActiveViewsIterator.More(); }
246 //! Go to the next active view (if there is not, ActiveView will raise an exception)
247 void NextActiveViews() { if (!myActiveViews.IsEmpty()) myActiveViewsIterator.Next(); }
249 const Handle(V3d_View)& ActiveView() const { return myActiveViewsIterator.Value(); }
251 //! returns true if there is only one active view.
252 Standard_Boolean LastActiveView() const { return myActiveViews.Extent() == 1; }
256 //! Return an iterator for defined views.
257 V3d_ListOfViewIterator DefinedViewIterator() const { return V3d_ListOfViewIterator (myDefinedViews); }
259 //! Initializes an internal iterator on the Defined views.
260 void InitDefinedViews() { myDefinedViewsIterator.Initialize (myDefinedViews); }
262 //! returns true if there are more Defined view(s) to return.
263 Standard_Boolean MoreDefinedViews() const { return myDefinedViewsIterator.More(); }
265 //! Go to the next Defined view (if there is not, DefinedView will raise an exception)
266 void NextDefinedViews() { if (!myDefinedViews.IsEmpty()) myDefinedViewsIterator.Next(); }
268 const Handle(V3d_View)& DefinedView() const { return myDefinedViewsIterator.Value(); }
270 public: //! @name lights management
272 //! Defines default lights:
273 //! positional-light 0.3 0. 0.
274 //! directional-light V3d_XnegYposZpos
275 //! directional-light V3d_XnegYneg
277 Standard_EXPORT void SetDefaultLights();
279 //! Activates MyLight in the viewer.
280 Standard_EXPORT void SetLightOn (const Handle(V3d_Light)& theLight);
282 //! Activates all the lights defined in this viewer.
283 Standard_EXPORT void SetLightOn();
285 //! Deactivates MyLight in this viewer.
286 Standard_EXPORT void SetLightOff (const Handle(V3d_Light)& theLight);
288 //! Deactivate all the Lights defined in this viewer.
289 Standard_EXPORT void SetLightOff();
291 //! Delete Light in Sequence Of Lights.
292 Standard_EXPORT void DelLight (const Handle(V3d_Light)& theLight);
294 //! Updates the lights of all the views of a viewer.
295 Standard_EXPORT void UpdateLights();
297 Standard_EXPORT Standard_Boolean IsGlobalLight (const Handle(V3d_Light)& TheLight) const;
299 //! Return an iterator for defined lights.
300 V3d_ListOfLightIterator ActiveLightIterator() const { return V3d_ListOfLightIterator (myActiveLights); }
302 //! Initializes an internal iteratator on the active Lights.
303 void InitActiveLights() { myActiveLightsIterator.Initialize (myActiveLights); }
305 //! returns true if there are more active Light(s) to return.
306 Standard_Boolean MoreActiveLights() const { return myActiveLightsIterator.More(); }
308 //! Go to the next active Light (if there is not, ActiveLight() will raise an exception)
309 void NextActiveLights() { myActiveLightsIterator.Next(); }
311 const Handle(V3d_Light)& ActiveLight() const { return myActiveLightsIterator.Value(); }
315 //! Return an iterator for defined lights.
316 V3d_ListOfLightIterator DefinedLightIterator() const { return V3d_ListOfLightIterator (myDefinedLights); }
318 //! Initializes an internal iterattor on the Defined Lights.
319 void InitDefinedLights() { myDefinedLightsIterator.Initialize (myDefinedLights); }
321 //! Returns true if there are more Defined Light(s) to return.
322 Standard_Boolean MoreDefinedLights() const { return myDefinedLightsIterator.More(); }
324 //! Go to the next Defined Light (if there is not, DefinedLight() will raise an exception)
325 void NextDefinedLights() { if (!myDefinedLights.IsEmpty()) myDefinedLightsIterator.Next(); }
327 const Handle(V3d_Light)& DefinedLight() const { return myDefinedLightsIterator.Value(); }
329 public: //! @name objects management
331 //! Erase all Objects in All the views.
332 Standard_EXPORT void Erase() const;
334 //! UnHighlight all Objects in All the views.
335 Standard_EXPORT void UnHighlight() const;
339 //! returns true if the computed mode can be used.
340 Standard_Boolean ComputedMode() const { return myComputedMode; }
342 //! Set if the computed mode can be used.
343 void SetComputedMode (const Standard_Boolean theMode) { myComputedMode = theMode; }
345 //! returns true if by default the computed mode must be used.
346 Standard_Boolean DefaultComputedMode() const { return myDefaultComputedMode; }
348 //! Set if by default the computed mode must be used.
349 void SetDefaultComputedMode (const Standard_Boolean theMode) { myDefaultComputedMode = theMode; }
351 public: //! @name privileged plane management
353 Standard_EXPORT gp_Ax3 PrivilegedPlane() const;
355 Standard_EXPORT void SetPrivilegedPlane (const gp_Ax3& thePlane);
357 Standard_EXPORT void DisplayPrivilegedPlane (const Standard_Boolean theOnOff, const Quantity_Length theSize = 1);
359 public: //! @name grid management
361 //! Activates the grid in all views of <me>.
362 Standard_EXPORT void ActivateGrid (const Aspect_GridType aGridType, const Aspect_GridDrawMode aGridDrawMode);
364 //! Deactivates the grid in all views of <me>.
365 Standard_EXPORT void DeactivateGrid();
367 //! Show/Don't show grid echo to the hit point.
368 //! If TRUE,the grid echo will be shown at ConvertToGrid() time.
369 Standard_EXPORT void SetGridEcho (const Standard_Boolean showGrid = Standard_True);
371 //! Show grid echo <aMarker> to the hit point.
372 //! Warning: When the grid echo marker is not set,
373 //! a default marker is build with the attributes:
374 //! marker type : Aspect_TOM_STAR
375 //! marker color : Quantity_NOC_GRAY90
376 //! marker size : 3.0
377 Standard_EXPORT void SetGridEcho (const Handle(Graphic3d_AspectMarker3d)& aMarker);
379 //! Returns TRUE when grid echo must be displayed
381 Standard_EXPORT Standard_Boolean GridEcho() const;
383 //! Returns Standard_True if a grid is activated in <me>.
384 Standard_EXPORT Standard_Boolean IsActive() const;
386 //! Returns the defined grid in <me>.
387 Standard_EXPORT Handle(Aspect_Grid) Grid() const;
389 //! Returns the current grid type defined in <me>.
390 Standard_EXPORT Aspect_GridType GridType() const;
392 //! Returns the current grid draw mode defined in <me>.
393 Standard_EXPORT Aspect_GridDrawMode GridDrawMode() const;
395 //! Returns the definition of the rectangular grid.
396 Standard_EXPORT void RectangularGridValues (Quantity_Length& XOrigin, Quantity_Length& YOrigin, Quantity_Length& XStep, Quantity_Length& YStep, Quantity_PlaneAngle& RotationAngle) const;
398 //! Sets the definition of the rectangular grid.
399 //! <XOrigin>, <YOrigin> defines the origin of the grid.
400 //! <XStep> defines the interval between 2 vertical lines.
401 //! <YStep> defines the interval between 2 horizontal lines.
402 //! <RotationAngle> defines the rotation angle of the grid.
403 Standard_EXPORT void SetRectangularGridValues (const Quantity_Length XOrigin, const Quantity_Length YOrigin, const Quantity_Length XStep, const Quantity_Length YStep, const Quantity_PlaneAngle RotationAngle);
405 //! Returns the definition of the circular grid.
406 Standard_EXPORT void CircularGridValues (Quantity_Length& XOrigin, Quantity_Length& YOrigin, Quantity_Length& RadiusStep, Standard_Integer& DivisionNumber, Quantity_PlaneAngle& RotationAngle) const;
408 //! Sets the definition of the circular grid.
409 //! <XOrigin>, <YOrigin> defines the origin of the grid.
410 //! <RadiusStep> defines the interval between 2 circles.
411 //! <DivisionNumber> defines the section number of one half circle.
412 //! <RotationAngle> defines the rotation angle of the grid.
413 Standard_EXPORT void SetCircularGridValues (const Quantity_Length XOrigin, const Quantity_Length YOrigin, const Quantity_Length RadiusStep, const Standard_Integer DivisionNumber, const Quantity_PlaneAngle RotationAngle);
415 //! Returns the location and the size of the grid.
416 Standard_EXPORT void CircularGridGraphicValues (Quantity_Length& Radius, Quantity_Length& OffSet) const;
418 //! Sets the location and the size of the grid.
419 //! <XSize> defines the width of the grid.
420 //! <YSize> defines the height of the grid.
421 //! <OffSet> defines the displacement along the plane normal.
422 Standard_EXPORT void SetCircularGridGraphicValues (const Quantity_Length Radius, const Quantity_Length OffSet);
424 //! Returns the location and the size of the grid.
425 Standard_EXPORT void RectangularGridGraphicValues (Quantity_Length& XSize, Quantity_Length& YSize, Quantity_Length& OffSet) const;
427 //! Sets the location and the size of the grid.
428 //! <XSize> defines the width of the grid.
429 //! <YSize> defines the height of the grid.
430 //! <OffSet> defines the displacement along the plane normal.
431 Standard_EXPORT void SetRectangularGridGraphicValues (const Quantity_Length XSize, const Quantity_Length YSize, const Quantity_Length OffSet);
433 //! Display grid echo at requested point in the view.
434 Standard_EXPORT void ShowGridEcho (const Handle(V3d_View)& theView, const Graphic3d_Vertex& thePoint);
436 //! Temporarly hide grid echo.
437 Standard_EXPORT void HideGridEcho (const Handle(V3d_View)& theView);
439 public: //! @name deprecated methods
441 Standard_DEPRECATED("This constructor is deprecated")
442 Standard_EXPORT V3d_Viewer (const Handle(Graphic3d_GraphicDriver)& theDriver,
443 const Standard_ExtString theName,
444 const Standard_CString theDomain = "",
445 const Quantity_Length theViewSize = 1000.0,
446 const V3d_TypeOfOrientation theViewProj = V3d_XposYnegZpos,
447 const Quantity_NameOfColor theViewBackground = Quantity_NOC_GRAY30,
448 const V3d_TypeOfVisualization theVisualization = V3d_ZBUFFER,
449 const V3d_TypeOfShadingModel theShadingModel = V3d_GOURAUD,
450 const V3d_TypeOfUpdate theUpdateMode = V3d_WAIT,
451 const Standard_Boolean theComputedMode = Standard_True,
452 const Standard_Boolean theDefaultComputedMode = Standard_True);
454 //! Defines the default base colour of views attached
455 //! to the Viewer by supplying the type of colour
456 //! definition and the three component values.
457 Standard_DEPRECATED("This method is deprecated - SetDefaultBackgroundColor() taking Quantity_Color should be used instead")
458 void SetDefaultBackgroundColor (const Quantity_TypeOfColor theType,
459 const Quantity_Parameter theV1,
460 const Quantity_Parameter theV2,
461 const Quantity_Parameter theV3)
463 Standard_Real aV1 = theV1;
464 Standard_Real aV2 = theV2;
465 Standard_Real aV3 = theV3;
466 if (aV1 < 0.0) aV1 = 0.0; else if (aV1 > 1.0) aV1 = 1.0;
467 if (aV2 < 0.0) aV2 = 0.0; else if (aV2 > 1.0) aV2 = 1.0;
468 if (aV3 < 0.0) aV3 = 0.0; else if (aV3 > 1.0) aV3 = 1.0;
469 SetDefaultBackgroundColor (Quantity_Color (aV1, aV2, aV3, theType));
472 Standard_DEPRECATED("This method is deprecated - DefaultBackgroundColor() without arguments should be used instead")
473 void DefaultBackgroundColor (const Quantity_TypeOfColor theType, Quantity_Parameter& theV1, Quantity_Parameter& theV2, Quantity_Parameter& theV3) const
475 Quantity_Color aColor = DefaultBackgroundColor();
476 aColor.Values (theV1, theV2, theV3, theType) ;
481 //! Returns the default background colour.
482 const Aspect_Background& GetBackgroundColor() const { return myBackground; }
484 //! Adds View in Sequence Of Views.
485 Standard_EXPORT void AddView (const Handle(V3d_View)& theView);
487 //! Delete View in Sequence Of Views.
488 Standard_EXPORT void DelView (const Handle(V3d_View)& theView);
490 //! Adds Light in Sequence Of Lights.
491 Standard_EXPORT void AddLight (const Handle(V3d_Light)& theLight);
495 Handle(Graphic3d_GraphicDriver) myDriver;
496 Handle(Graphic3d_StructureManager) myStructureManager;
497 TColStd_MapOfInteger myLayerIds;
498 Aspect_GenId myZLayerGenId;
500 V3d_ListOfView myDefinedViews;
501 V3d_ListOfView myActiveViews;
502 V3d_ListOfLight myDefinedLights;
503 V3d_ListOfLight myActiveLights;
505 Aspect_Background myBackground;
506 Aspect_GradientBackground myGradientBackground;
507 Standard_Real myViewSize;
508 V3d_TypeOfOrientation myViewProj;
509 V3d_TypeOfVisualization myVisualization;
510 V3d_TypeOfShadingModel myShadingModel;
511 V3d_TypeOfView myDefaultTypeOfView;
512 Graphic3d_RenderingParams myDefaultRenderingParams;
514 V3d_ListOfView::Iterator myActiveViewsIterator;
515 V3d_ListOfView::Iterator myDefinedViewsIterator;
516 V3d_ListOfLight::Iterator myActiveLightsIterator;
517 V3d_ListOfLight::Iterator myDefinedLightsIterator;
519 Standard_Boolean myComputedMode;
520 Standard_Boolean myDefaultComputedMode;
522 gp_Ax3 myPrivilegedPlane;
523 Handle(Graphic3d_Structure) myPlaneStructure;
524 Standard_Boolean myDisplayPlane;
525 Quantity_Length myDisplayPlaneLength;
527 Handle(V3d_RectangularGrid) myRGrid;
528 Handle(V3d_CircularGrid) myCGrid;
529 Aspect_GridType myGridType;
530 Standard_Boolean myGridEcho;
531 Handle(Graphic3d_Structure) myGridEchoStructure;
532 Handle(Graphic3d_Group) myGridEchoGroup;
533 Handle(Graphic3d_AspectMarker3d) myGridEchoAspect;
534 Graphic3d_Vertex myGridEchoLastVert;
538 DEFINE_STANDARD_HANDLE(V3d_Viewer, Standard_Transient)
540 #endif // _V3d_Viewer_HeaderFile