1 // Copyright (c) 2015 OPEN CASCADE SAS
3 // This file is part of Open CASCADE Technology software library.
5 // This library is free software; you can redistribute it and/or modify it under
6 // the terms of the GNU Lesser General Public License version 2.1 as published
7 // by the Free Software Foundation, with special exception defined in the file
8 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9 // distribution for complete text of the license and disclaimer of any warranty.
11 // Alternatively, this file may be used under the terms of Open CASCADE
12 // commercial license or contractual agreement.
14 #ifndef _Graphic3d_CView_HeaderFile
15 #define _Graphic3d_CView_HeaderFile
17 #include <Aspect_Handle.hxx>
18 #include <Aspect_RenderingContext.hxx>
19 #include <Aspect_Window.hxx>
20 #include <Graphic3d_BufferType.hxx>
21 #include <Graphic3d_Camera.hxx>
22 #include <Graphic3d_CLight.hxx>
23 #include <Graphic3d_CStructure.hxx>
24 #include <Graphic3d_DataStructureManager.hxx>
25 #include <Graphic3d_DiagnosticInfo.hxx>
26 #include <Graphic3d_ExportFormat.hxx>
27 #include <Graphic3d_GraduatedTrihedron.hxx>
28 #include <Graphic3d_MapOfStructure.hxx>
29 #include <Graphic3d_NMapOfTransient.hxx>
30 #include <Graphic3d_RenderingParams.hxx>
31 #include <Graphic3d_SequenceOfHClipPlane.hxx>
32 #include <Graphic3d_SequenceOfStructure.hxx>
33 #include <Graphic3d_SortType.hxx>
34 #include <Graphic3d_Structure.hxx>
35 #include <Graphic3d_TextureEnv.hxx>
36 #include <Graphic3d_TypeOfAnswer.hxx>
37 #include <Graphic3d_TypeOfBackfacingModel.hxx>
38 #include <Graphic3d_TypeOfShadingModel.hxx>
39 #include <Graphic3d_TypeOfVisualization.hxx>
40 #include <Graphic3d_Vec3.hxx>
41 #include <Graphic3d_ZLayerId.hxx>
42 #include <Graphic3d_ZLayerSettings.hxx>
43 #include <Image_PixMap.hxx>
44 #include <Quantity_NameOfColor.hxx>
45 #include <Standard_Address.hxx>
46 #include <Standard_Transient.hxx>
47 #include <TColStd_IndexedDataMapOfStringString.hxx>
49 class Graphic3d_CView;
50 class Graphic3d_GraphicDriver;
51 class Graphic3d_StructureManager;
53 DEFINE_STANDARD_HANDLE (Graphic3d_CView, Graphic3d_DataStructureManager)
55 //! Base class of a graphical view that carries out rendering process for a concrete
56 //! implementation of graphical driver. Provides virtual interfaces for redrawing its
57 //! contents, management of displayed structures and render settings. The source code
58 //! of the class itself implements functionality related to management of
59 //! computed (HLR or "view-dependent") structures.
60 class Graphic3d_CView : public Graphic3d_DataStructureManager
65 Standard_EXPORT Graphic3d_CView (const Handle(Graphic3d_StructureManager)& theMgr);
68 Standard_EXPORT virtual ~Graphic3d_CView();
70 //! Returns the identification number of the view.
71 Standard_Integer Identification() const { return myId; }
73 //! Activates the view. Maps presentations defined within structure manager onto this view.
74 Standard_EXPORT virtual void Activate();
76 //! Deactivates the view. Unmaps presentations defined within structure manager.
77 //! The view in deactivated state will ignore actions on structures such as Display().
78 Standard_EXPORT virtual void Deactivate();
80 //! Returns the activity flag of the view.
81 Standard_Boolean IsActive() const { return myIsActive; }
83 //! Erases the view and removes from graphic driver.
84 //! No more graphic operations are allowed in this view after the call.
85 Standard_EXPORT virtual void Remove();
87 //! Returns true if the view was removed.
88 Standard_Boolean IsRemoved() const { return myIsRemoved; }
92 //! Returns visualization type of the view.
93 Graphic3d_TypeOfVisualization VisualizationType() const { return myVisualization; }
95 //! Sets visualization type of the view.
96 void SetVisualizationType (const Graphic3d_TypeOfVisualization theType) { myVisualization = theType; }
98 //! Switches computed HLR mode in the view
99 Standard_EXPORT void SetComputedMode (const Standard_Boolean theMode);
101 //! Returns the computed HLR mode state
102 Standard_Boolean ComputedMode() const { return myIsInComputedMode; }
104 //! Computes the new presentation of the structure displayed in this view with the type Graphic3d_TOS_COMPUTED.
105 Standard_EXPORT void ReCompute (const Handle(Graphic3d_Structure)& theStructure);
107 //! Invalidates bounding box of specified ZLayerId.
108 Standard_EXPORT void Update (const Graphic3d_ZLayerId theLayerId = Graphic3d_ZLayerId_UNKNOWN);
110 //! Computes the new presentation of the structures displayed in this view with the type Graphic3d_TOS_COMPUTED.
111 Standard_EXPORT void Compute();
113 //! Returns Standard_True if one of the structures displayed in the view contains Polygons, Triangles or Quadrangles.
114 Standard_EXPORT Standard_Boolean ContainsFacet() const;
116 //! Returns Standard_True if one of the structures in the set contains Polygons, Triangles or Quadrangles.
117 Standard_EXPORT Standard_Boolean ContainsFacet (const Graphic3d_MapOfStructure& theSet) const;
119 //! Returns the set of structures displayed in this view.
120 Standard_EXPORT void DisplayedStructures (Graphic3d_MapOfStructure& theStructures) const;
122 //! Returns number of displayed structures in the view.
123 virtual Standard_Integer NumberOfDisplayedStructures() const { return myStructsDisplayed.Extent(); }
125 //! Returns map of objects hidden within this specific view (not viewer-wise).
126 const Handle(Graphic3d_NMapOfTransient)& HiddenObjects() const { return myHiddenObjects; }
128 //! Returns map of objects hidden within this specific view (not viewer-wise).
129 Handle(Graphic3d_NMapOfTransient)& ChangeHiddenObjects() { return myHiddenObjects; }
131 //! Returns Standard_True in case if the structure with the given <theStructId> is
132 //! in list of structures to be computed and stores computed struct to <theComputedStruct>.
133 Standard_EXPORT Standard_Boolean IsComputed (const Standard_Integer theStructId,
134 Handle(Graphic3d_Structure)& theComputedStruct) const;
136 //! Returns the bounding box of all structures displayed in the view.
137 //! If theToIncludeAuxiliary is TRUE, then the boundary box also includes minimum and maximum limits
138 //! of graphical elements forming parts of infinite and other auxiliary structures.
139 //! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
140 //! @return computed bounding box
141 Standard_EXPORT virtual Bnd_Box MinMaxValues (const Standard_Boolean theToIncludeAuxiliary = Standard_False) const;
143 //! Returns the coordinates of the boundary box of all structures in the set <theSet>.
144 //! If <theToIgnoreInfiniteFlag> is TRUE, then the boundary box
145 //! also includes minimum and maximum limits of graphical elements
146 //! forming parts of infinite structures.
147 Standard_EXPORT Bnd_Box MinMaxValues (const Graphic3d_MapOfStructure& theSet,
148 const Standard_Boolean theToIncludeAuxiliary = Standard_False) const;
150 //! Returns the structure manager handle which manage structures associated with this view.
151 const Handle(Graphic3d_StructureManager)& StructureManager() const { return myStructureManager; }
155 friend class Graphic3d_StructureManager;
157 //! Is it possible to display the structure in the view?
158 Standard_EXPORT Graphic3d_TypeOfAnswer acceptDisplay (const Graphic3d_TypeOfStructure theStructType) const;
160 //! Clears the structure in this view.
161 Standard_EXPORT void Clear (const Handle(Graphic3d_Structure)& theStructure, const Standard_Boolean theWithDestruction);
163 //! Connects the structures.
164 Standard_EXPORT void Connect (const Handle(Graphic3d_Structure)& theMother,
165 const Handle(Graphic3d_Structure)& theDaughter);
167 //! Disconnects the structures.
168 Standard_EXPORT void Disconnect (const Handle(Graphic3d_Structure)& theMother,
169 const Handle(Graphic3d_Structure)& theDaughter);
171 //! Displays the structure in the view.
172 Standard_EXPORT void Display (const Handle(Graphic3d_Structure)& theStructure);
174 //! Erases the structure from the view.
175 Standard_EXPORT void Erase (const Handle(Graphic3d_Structure)& theStructure);
177 //! Highlights the structure in the view.
178 Standard_EXPORT void Highlight (const Handle(Graphic3d_Structure)& theStructure);
180 //! Transforms the structure in the view.
181 Standard_EXPORT void SetTransform (const Handle(Graphic3d_Structure)& theStructure,
182 const Handle(Geom_Transformation)& theTrsf);
184 //! Suppress the highlighting on the structure <AStructure>
185 //! in the view <me>.
186 Standard_EXPORT void UnHighlight (const Handle(Graphic3d_Structure)& theStructure);
188 //! Returns an index != 0 if the structure have another structure computed for the view <me>.
189 Standard_EXPORT Standard_Integer IsComputed (const Handle(Graphic3d_Structure)& theStructure) const;
191 //! Returns true if the structure is displayed in the view.
192 Standard_EXPORT Standard_Boolean IsDisplayed (const Handle(Graphic3d_Structure)& theStructure) const;
194 //! Changes the display priority of the structure.
195 Standard_EXPORT void ChangePriority (const Handle(Graphic3d_Structure)& theStructure,
196 const Standard_Integer theOldPriority,
197 const Standard_Integer theNewPriority);
199 //! Change Z layer of already displayed structure in the view.
200 Standard_EXPORT void ChangeZLayer (const Handle(Graphic3d_Structure)& theStructure,
201 const Graphic3d_ZLayerId theLayerId);
203 //! Returns an index != 0 if the structure have the same owner than another structure
204 //! in the sequence of the computed structures.
205 Standard_EXPORT Standard_Integer HaveTheSameOwner (const Handle(Graphic3d_Structure)& theStructure) const;
209 //! Redraw content of the view.
210 virtual void Redraw() = 0;
212 //! Redraw immediate content of the view.
213 virtual void RedrawImmediate() = 0;
215 //! Invalidates content of the view but does not redraw it.
216 virtual void Invalidate() = 0;
218 //! Return true if view content cache has been invalidated.
219 virtual Standard_Boolean IsInvalidated() = 0;
221 //! Handle changing size of the rendering window.
222 virtual void Resized() = 0;
224 //! @param theDrawToFrontBuffer Advanced option to modify rendering mode:
225 //! 1. TRUE. Drawing immediate mode structures directly to the front buffer over the scene image.
226 //! Fast, so preferred for interactive work (used by default).
227 //! However these extra drawings will be missed in image dump since it is performed from back buffer.
228 //! Notice that since no pre-buffering used the V-Sync will be ignored and rendering could be seen
229 //! in run-time (in case of slow hardware) and/or tearing may appear.
230 //! So this is strongly recommended to draw only simple (fast) structures.
231 //! 2. FALSE. Drawing immediate mode structures to the back buffer.
232 //! The complete scene is redrawn first, so this mode is slower if scene contains complex data and/or V-Sync
233 //! is turned on. But it works in any case and is especially useful for view dump because the dump image is read
234 //! from the back buffer.
235 //! @return previous mode.
236 virtual Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer) = 0;
238 //! Creates and maps rendering window to the view.
239 //! @param theWindow [in] the window.
240 //! @param theContext [in] the rendering context. If NULL the context will be created internally.
241 virtual void SetWindow (const Handle(Aspect_Window)& theWindow,
242 const Aspect_RenderingContext theContext = NULL) = 0;
244 //! Returns the window associated to the view.
245 virtual Handle(Aspect_Window) Window() const = 0;
247 //! Returns True if the window associated to the view is defined.
248 virtual Standard_Boolean IsDefined() const = 0;
250 //! Returns data of a graduated trihedron
251 virtual const Graphic3d_GraduatedTrihedron& GetGraduatedTrihedron() = 0;
253 //! Displays Graduated Trihedron.
254 virtual void GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData) = 0;
256 //! Erases Graduated Trihedron.
257 virtual void GraduatedTrihedronErase() = 0;
259 //! Sets minimum and maximum points of scene bounding box for Graduated Trihedron stored in graphic view object.
260 //! @param theMin [in] the minimum point of scene.
261 //! @param theMax [in] the maximum point of scene.
262 virtual void GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax) = 0;
264 //! Dump active rendering buffer into specified memory buffer.
265 virtual Standard_Boolean BufferDump (Image_PixMap& theImage, const Graphic3d_BufferType& theBufferType) = 0;
267 //! Export scene into the one of the Vector graphics formats (SVG, PS, PDF...).
268 //! In contrast to Bitmaps, Vector graphics is scalable (so you may got quality benefits
269 //! on printing to laser printer). Notice however that results may differ a lot and
270 //! do not contain some elements.
271 virtual Standard_Boolean Export (const Standard_CString theFileName,
272 const Graphic3d_ExportFormat theFormat,
273 const Graphic3d_SortType theSortType = Graphic3d_ST_BSP_Tree) = 0;
275 //! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
276 virtual void InvalidateBVHData (const Standard_Integer theLayerId) = 0;
278 //! Add a new top-level z layer with ID <theLayerId> for
279 //! the view. Z layers allow drawing structures in higher layers
280 //! in foreground of structures in lower layers. To add a structure
281 //! to desired layer on display it is necessary to set the layer
282 //! ID for the structure.
283 virtual void AddZLayer (const Graphic3d_ZLayerId theLayerId) = 0;
285 //! Returns the maximum Z layer ID.
286 //! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
287 virtual Standard_Integer ZLayerMax() const = 0;
289 //! Returns the bounding box of all structures displayed in the Z layer.
290 virtual void InvalidateZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId) const = 0;
292 //! Returns the bounding box of all structures displayed in the Z layer.
293 //! @param theLayerId layer identifier
294 //! @param theCamera camera definition
295 //! @param theWindowWidth viewport width (for applying transformation-persistence)
296 //! @param theWindowHeight viewport height (for applying transformation-persistence)
297 //! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
298 //! @return computed bounding box
299 virtual Bnd_Box ZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId,
300 const Handle(Graphic3d_Camera)& theCamera,
301 const Standard_Integer theWindowWidth,
302 const Standard_Integer theWindowHeight,
303 const Standard_Boolean theToIncludeAuxiliary) const = 0;
305 //! Remove Z layer from the specified view. All structures
306 //! displayed at the moment in layer will be displayed in default layer
307 //! ( the bottom-level z layer ). To unset layer ID from associated
308 //! structures use method UnsetZLayer (...).
309 virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) = 0;
311 //! Sets the settings for a single Z layer of specified view.
312 virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
313 const Graphic3d_ZLayerSettings& theSettings) = 0;
315 //! Returns zoom-scale factor.
316 Standard_EXPORT Standard_Real ConsiderZoomPersistenceObjects();
318 //! Returns pointer to an assigned framebuffer object.
319 virtual Handle(Standard_Transient) FBO() const = 0;
321 //! Sets framebuffer object for offscreen rendering.
322 virtual void SetFBO (const Handle(Standard_Transient)& theFbo) = 0;
324 //! Generate offscreen FBO in the graphic library.
325 //! If not supported on hardware returns NULL.
326 virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
327 const Standard_Integer theHeight) = 0;
329 //! Remove offscreen FBO from the graphic library
330 virtual void FBORelease (Handle(Standard_Transient)& theFbo) = 0;
332 //! Read offscreen FBO configuration.
333 virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
334 Standard_Integer& theWidth,
335 Standard_Integer& theHeight,
336 Standard_Integer& theWidthMax,
337 Standard_Integer& theHeightMax) = 0;
339 //! Change offscreen FBO viewport.
340 virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
341 const Standard_Integer theWidth,
342 const Standard_Integer theHeight) = 0;
346 //! Copy visualization settings from another view.
347 //! Method is used for cloning views in viewer when its required to create view
348 //! with same view properties.
349 Standard_EXPORT virtual void CopySettings (const Handle(Graphic3d_CView)& theOther);
351 //! Returns current rendering parameters and effect settings.
352 const Graphic3d_RenderingParams& RenderingParams() const { return myRenderParams; }
354 //! Returns reference to current rendering parameters and effect settings.
355 Graphic3d_RenderingParams& ChangeRenderingParams() { return myRenderParams; }
357 //! Returns background fill color.
358 virtual Aspect_Background Background() const = 0;
360 //! Sets background fill color.
361 virtual void SetBackground (const Aspect_Background& theBackground) = 0;
363 //! Returns gradient background fill colors.
364 virtual Aspect_GradientBackground GradientBackground() const = 0;
366 //! Sets gradient background fill colors.
367 virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) = 0;
369 //! Returns background image texture file path.
370 virtual TCollection_AsciiString BackgroundImage() = 0;
372 //! Sets background image texture file path.
373 virtual void SetBackgroundImage (const TCollection_AsciiString& theFilePath) = 0;
375 //! Returns background image fill style.
376 virtual Aspect_FillMethod BackgroundImageStyle() const = 0;
378 //! Sets background image fill style.
379 virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) = 0;
381 //! Returns environment texture set for the view.
382 virtual Handle(Graphic3d_TextureEnv) TextureEnv() const = 0;
384 //! Sets environment texture for the view.
385 virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) = 0;
387 //! Returns the state of frustum culling optimization.
388 virtual Standard_Boolean IsCullingEnabled() const = 0;
390 //! Enables or disables frustum culling optimization.
391 virtual void SetCullingEnabled (const Standard_Boolean theIsEnabled) = 0;
393 //! Returns shading model of the view.
394 virtual Graphic3d_TypeOfShadingModel ShadingModel() const = 0;
396 //! Sets shading model of the view.
397 virtual void SetShadingModel (const Graphic3d_TypeOfShadingModel theModel) = 0;
399 //! Return backfacing model used for the view.
400 virtual Graphic3d_TypeOfBackfacingModel BackfacingModel() const = 0;
402 //! Sets backfacing model for the view.
403 virtual void SetBackfacingModel (const Graphic3d_TypeOfBackfacingModel theModel) = 0;
405 //! Returns camera object of the view.
406 virtual const Handle(Graphic3d_Camera)& Camera() const = 0;
408 //! Sets camera used by the view.
409 virtual void SetCamera (const Handle(Graphic3d_Camera)& theCamera) = 0;
411 //! Returns list of lights of the view.
412 virtual const Graphic3d_ListOfCLight& Lights() const = 0;
414 //! Sets list of lights for the view.
415 virtual void SetLights (const Graphic3d_ListOfCLight& theLights) = 0;
417 //! Returns list of clip planes set for the view.
418 virtual const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const = 0;
420 //! Sets list of clip planes for the view.
421 virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes) = 0;
423 //! Fill in the dictionary with diagnostic info.
424 //! Should be called within rendering thread.
426 //! This API should be used only for user output or for creating automated reports.
427 //! The format of returned information (e.g. key-value layout)
428 //! is NOT part of this API and can be changed at any time.
429 //! Thus application should not parse returned information to weed out specific parameters.
430 virtual void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
431 Graphic3d_DiagnosticInfo theFlags) const = 0;
435 //! Adds the structure to display lists of the view.
436 virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
437 const Standard_Integer thePriority) = 0;
439 //! Erases the structure from display lists of the view.
440 virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) = 0;
442 //! Change Z layer of a structure already presented in view.
443 virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
444 const Graphic3d_ZLayerId theNewLayerId) = 0;
446 //! Changes the priority of a structure within its Z layer in the specified view.
447 virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
448 const Standard_Integer theNewPriority) = 0;
450 //! Returns zoom-scale factor.
451 virtual Standard_Real considerZoomPersistenceObjects (const Graphic3d_ZLayerId theLayerId,
452 const Handle(Graphic3d_Camera)& theCamera,
453 const Standard_Integer theWindowWidth,
454 const Standard_Integer theWindowHeight) const = 0;
458 Standard_Integer myId;
459 Graphic3d_RenderingParams myRenderParams;
460 Handle(Graphic3d_StructureManager) myStructureManager;
461 Graphic3d_SequenceOfStructure myStructsToCompute;
462 Graphic3d_SequenceOfStructure myStructsComputed;
463 Graphic3d_MapOfStructure myStructsDisplayed;
464 Handle(Graphic3d_NMapOfTransient) myHiddenObjects;
465 Standard_Boolean myIsInComputedMode;
466 Standard_Boolean myIsActive;
467 Standard_Boolean myIsRemoved;
468 Graphic3d_TypeOfVisualization myVisualization;
472 DEFINE_STANDARD_RTTIEXT(Graphic3d_CView,Graphic3d_DataStructureManager)
475 #endif // _Graphic3d_CView_HeaderFile