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1 // 1 //
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
>> 27 // $Id: G4VViewer.hh 71534 2013-06-17 16:07:53Z gcosmo $
27 // 28 //
28 // 29 //
29 // John Allison 27th March 1996 30 // John Allison 27th March 1996
30 // 31 //
31 // Class description 32 // Class description
32 // 33 //
33 // Abstract interface class for graphics viewe 34 // Abstract interface class for graphics viewers.
34 35
35 #ifndef G4VVIEWER_HH 36 #ifndef G4VVIEWER_HH
36 #define G4VVIEWER_HH 37 #define G4VVIEWER_HH
37 38
38 #include "globals.hh" 39 #include "globals.hh"
39 40
40 #include "G4SceneTreeItem.hh" <<
41 <<
42 #include "G4ViewParameters.hh" 41 #include "G4ViewParameters.hh"
43 #include "G4PhysicalVolumeModel.hh" <<
44 #include "G4PseudoScene.hh" <<
45 <<
46 #include <vector> <<
47 #include <list> <<
48 42
49 class G4VSceneHandler; 43 class G4VSceneHandler;
50 44
51 // clang-format off <<
52 class G4VViewer { 45 class G4VViewer {
53 46
54 public: // With description 47 public: // With description
55 48
56 friend std::ostream& operator << (std::ostre 49 friend std::ostream& operator << (std::ostream& os, const G4VViewer& v);
57 50
58 G4VViewer (G4VSceneHandler&, G4int id, const 51 G4VViewer (G4VSceneHandler&, G4int id, const G4String& name = "");
59 virtual ~G4VViewer (); 52 virtual ~G4VViewer ();
60 53
61 virtual void Initialise (); 54 virtual void Initialise ();
62 // Called immediately after construction for 55 // Called immediately after construction for those operations that
63 // must await complete contruction of viewer 56 // must await complete contruction of viewer and all its bases. For
64 // example, if this class (G4VViewer) is inh 57 // example, if this class (G4VViewer) is inherited virtually, as in
65 // the OpenGL sub-category, it will not be f 58 // the OpenGL sub-category, it will not be fully constructed until
66 // *after* the the derived viewer (this is t 59 // *after* the the derived viewer (this is the rule about order of
67 // construction for virtual inheritance), so 60 // construction for virtual inheritance), so the derived viewer may
68 // not use information in G4VViewer in its c 61 // not use information in G4VViewer in its contructor. Hence such
69 // code must be in Initialise(). 62 // code must be in Initialise().
70 63
71 //////////////////////////////////////////// 64 //////////////////////////////////////////////////////////////
72 // View manipulation functions. 65 // View manipulation functions.
73 66
74 virtual void ResetView (); 67 virtual void ResetView ();
75 // Reset view parameters to default, includi 68 // Reset view parameters to default, including sub-class parameters, if any.
76 // The sub-class should always invoke the ba 69 // The sub-class should always invoke the base class implementation, i.e:
77 // virtual void SubClass::ResetView () { 70 // virtual void SubClass::ResetView () {
78 // G4VViewer::ResetView(); 71 // G4VViewer::ResetView();
79 // // Then reset sub-class parameters 72 // // Then reset sub-class parameters
80 // ... 73 // ...
81 74
82 virtual void SetView () = 0; 75 virtual void SetView () = 0;
83 // Take view parameters and work out model/v 76 // Take view parameters and work out model/view transformation,
84 // projection transformation, lighting, etc. 77 // projection transformation, lighting, etc.
85 78
86 virtual void ClearView () = 0; 79 virtual void ClearView () = 0;
87 // Clear screen/viewing buffers. 80 // Clear screen/viewing buffers.
88 81
89 virtual void DrawView () = 0; 82 virtual void DrawView () = 0;
90 // Draw view of the scene currently attached 83 // Draw view of the scene currently attached to the scene handler -
91 // see example of a minimal function at end 84 // see example of a minimal function at end of this file.
92 85
93 void RefreshView (); 86 void RefreshView ();
94 // Simply invokes SetView, ClearView, DrawVi 87 // Simply invokes SetView, ClearView, DrawView.
95 88
96 virtual void ShowView (); 89 virtual void ShowView ();
97 // Show view (for graphics systems which req 90 // Show view (for graphics systems which require to process
98 // all drawn objects before finalising the v 91 // all drawn objects before finalising the view).
99 92
100 virtual void FinishView (); 93 virtual void FinishView ();
101 // Called at the end of drawing scene. Used 94 // Called at the end of drawing scene. Used to flush streams, or
102 // swap buffers. (Perhaps it is inappropria 95 // swap buffers. (Perhaps it is inappropriately named, perhaps its
103 // function could be incorporated into EndMo 96 // function could be incorporated into EndModeling (). It marks the
104 // end of scene drawing; be aware hits and d 97 // end of scene drawing; be aware hits and digi drawing may Follow.
105 // It is not yet the end of all drawing; tha 98 // It is not yet the end of all drawing; that is signalled by
106 // ShowView ().) 99 // ShowView ().)
107 100
108 virtual G4bool ReadyToDraw() {return true;} <<
109 <<
110 std::vector<G4ThreeVector> ComputeFlyThrough <<
111 <<
112 // Note: the order of calling of MovingToVis <<
113 // is undefined, so you may need to implemen <<
114 // order - see, e.g., G4OpenGLQtViewer. To s <<
115 // as follows - see G4VisManager.cc. <<
116 // DoneWithMasterThread <<
117 // MovingToVisSubThread ) or ( SwitchToVisSu <<
118 // SwitchToVisSubThread ) ( MovingToVisSu <<
119 // DoneWithVisSubThread <<
120 // MovingToMasterThread <<
121 // SwitchToMasterThread <<
122 <<
123 // Called on the master thread before starti <<
124 virtual void DoneWithMasterThread () {} <<
125 <<
126 // Called on the master thread after startin <<
127 virtual void MovingToVisSubThread () {} <<
128 <<
129 // Called on the vis sub-thread at start of <<
130 virtual void SwitchToVisSubThread () {} <<
131 <<
132 // Called on the vis sub-thread when all eve <<
133 virtual void DoneWithVisSubThread () {} <<
134 <<
135 // Called on the vis sub-thread when all eve <<
136 virtual void MovingToMasterThread () {} <<
137 <<
138 // Called on the master thread after the vis <<
139 virtual void SwitchToMasterThread () {} <<
140 <<
141 //////////////////////////////////////////// <<
142 // Stuff for scene tree. <<
143 /** <<
144 - The scene tree is a tree of G4SceneTreeIt <<
145 - Its root is a data member fSceneTree of a <<
146 G4VViewer inheritance, <<
147 - G4SceneTreeItem is an aggregate of data m <<
148 properties of objects in the scene (G4Scene <<
149 low-level types - G4String, G4VisAttributes <<
150 that it can be used across categories, avoi <<
151 - The root item has children that represent <<
152 sub-classes) in the scene. <<
153 - For a G4PhysicalVolumeModel (detector com <<
154 children's children, etc., imitate the geom <<
155 model. These descendants are called "toucha <<
156 - There may be more than one G4PhysicalVolu <<
157 the user creates his/her scene. <<
158 - The scene tree is reviewed, and updated i <<
159 of G4VSceneHandler::ProcessScene. This is <<
160 - A kernel visit is triggered by some vis c <<
161 /vis/viewer/rebuild) and by a viewer if it <<
162 example, a kernel visit may not be required <<
163 but required for a change from surface to w <<
164 - The idea is that the scene tree can be pa <<
165 create a tree widget, and interactions with <<
166 /vis/scene/activateModel, /vis/set/touchabl <<
167 The viewer decides if this requires a kerne <<
168 must update fSceneTree itself (utilities ar <<
169 G4VViewer::TouchableSetVisibility/Colour). <<
170 */ <<
171 class SceneTreeScene: public G4PseudoScene { <<
172 // G4PhysicalVolumeModel sends touchables <<
173 public: <<
174 SceneTreeScene(G4VViewer*, G4PhysicalVolum <<
175 ~SceneTreeScene() = default; <<
176 private: <<
177 void ProcessVolume(const G4VSolid& solid) <<
178 std::list<G4SceneTreeItem>::iterator FindO <<
179 (const G4String& modelID, G4SceneTreeItem& <<
180 G4int depth, const G4String& partialPathS <<
181 G4VViewer* fpViewer = nullptr; <<
182 G4PhysicalVolumeModel* fpPVModel = nullptr <<
183 std::list<G4SceneTreeItem>::iterator fMod <<
184 G4int fMaximumExpandedDepth = 0; // To <<
185 const G4int fMaximumExpanded = 30; // So <<
186 }; <<
187 void InsertModelInSceneTree(G4VModel*); <<
188 const G4SceneTreeItem& GetSceneTree() {retur <<
189 G4SceneTreeItem& AccessSceneTree() {return f <<
190 void UpdateGUISceneTree(); // A utility <<
191 const G4int fMaxNTouchables = 10000; // Lim <<
192 G4bool fCurtailDescent = false; // Flag to <<
193 <<
194 //////////////////////////////////////////// 101 //////////////////////////////////////////////////////////////
195 // Access functions. 102 // Access functions.
196 const G4String& GetName () 103 const G4String& GetName () const;
197 const G4String& GetShortName () 104 const G4String& GetShortName () const;
198 void SetName (c 105 void SetName (const G4String&);
199 G4int GetViewId () 106 G4int GetViewId () const;
200 G4VSceneHandler* GetSceneHandler () 107 G4VSceneHandler* GetSceneHandler () const;
201 const G4ViewParameters& GetViewParameters 108 const G4ViewParameters& GetViewParameters () const;
202 const G4ViewParameters& GetDefaultViewParame 109 const G4ViewParameters& GetDefaultViewParameters () const;
203 G4double GetKernelVisitElapse <<
204 110
205 virtual const std::vector<G4ModelingParamete 111 virtual const std::vector<G4ModelingParameters::VisAttributesModifier>*
206 GetPrivateVisAttributesModifiers() const; 112 GetPrivateVisAttributesModifiers() const;
207 // So that privately accumulated vis attribu 113 // So that privately accumulated vis attributes modifiers may be
208 // concatenated with the standard vis attrib 114 // concatenated with the standard vis attributes modifiers for commands
209 // such as /vis/viewer/set/all and /vis/view 115 // such as /vis/viewer/set/all and /vis/viewer/save.
210 116
211 void SetViewParameters (const G4View 117 void SetViewParameters (const G4ViewParameters& vp);
212 void SetDefaultViewParameters (const G4View 118 void SetDefaultViewParameters (const G4ViewParameters& vp);
213 119
214 //////////////////////////////////////////// 120 //////////////////////////////////////////////////////////////
215 // Public utility functions. 121 // Public utility functions.
216 122
217 const G4VisAttributes* GetApplicableVisAttr 123 const G4VisAttributes* GetApplicableVisAttributes
218 (c 124 (const G4VisAttributes*) const;
219 125
220 void SetNeedKernelVisit (G4bool need); 126 void SetNeedKernelVisit (G4bool need);
221 // Sets individual need-visit flag. 127 // Sets individual need-visit flag.
222 128
223 void NeedKernelVisit (); 129 void NeedKernelVisit ();
224 // Flags all views the need to re-visit the 130 // Flags all views the need to re-visit the GEANT4 kernel to refresh
225 // the scene. 131 // the scene.
226 132
227 void ProcessView (); 133 void ProcessView ();
228 // Used by DrawView (). Invokes SetView (). 134 // Used by DrawView (). Invokes SetView (). The basic logic is here.
229 135
230 protected: 136 protected:
231 137
232 //////////////////////////////////////////// 138 //////////////////////////////////////////////////////////////
233 // Protected utility functions. <<
234 <<
235 void SetTouchable <<
236 (const std::vector<G4PhysicalVolumeModel::G4 <<
237 // Set the touchable for /vis/touchable/set/ <<
238 <<
239 void TouchableSetVisibility <<
240 (const std::vector<G4PhysicalVolumeModel::G4 <<
241 G4bool visibility); <<
242 // Set the touchable visibility attribute. <<
243 // Changes the Vis Attribute Modifiers WITHO <<
244 <<
245 void TouchableSetColour <<
246 (const std::vector<G4PhysicalVolumeModel::G4 <<
247 const G4Colour&); <<
248 // Set the touchable colour attribute. <<
249 // Changes the Vis Attribute Modifiers WITHO <<
250 <<
251 //////////////////////////////////////////// <<
252 // Data members 139 // Data members
253 G4VSceneHandler& fSceneHandler; / 140 G4VSceneHandler& fSceneHandler; // Abstract scene for this view.
254 G4int fViewId; // Id of this i 141 G4int fViewId; // Id of this instance.
255 G4String fName; 142 G4String fName;
256 G4String fShortName; // Up to first 143 G4String fShortName; // Up to first ' ' character, if any.
257 G4ViewParameters fVP; // View paramet 144 G4ViewParameters fVP; // View parameters.
258 G4ViewParameters fDefaultVP; // Default view 145 G4ViewParameters fDefaultVP; // Default view parameters.
259 G4double fKernelVisitElapsedTimeSeco <<
260 // Note: fKernelVisitElapsedTimeSeconds is m <<
261 G4SceneTreeItem fSceneTree; <<
262 146
263 //////////////////////////////////////////// 147 //////////////////////////////////////////////////////////////
264 // Other parameters. 148 // Other parameters.
265 G4bool fNeedKernelVisit; // See D 149 G4bool fNeedKernelVisit; // See DrawView() for comments.
266 }; 150 };
267 151
268 #include "G4VViewer.icc" 152 #include "G4VViewer.icc"
269 153
270 /********************************************* 154 /*********************************************
271 155
272 Here is a minimal DrawView () as it might be i 156 Here is a minimal DrawView () as it might be implemented in the
273 concrete viewer. 157 concrete viewer.
274 158
275 void G4VViewer::DrawView () { // Default - co 159 void G4VViewer::DrawView () { // Default - concrete view usually overrides.
276 160
277 // First, a view should decide when to re-vi 161 // First, a view should decide when to re-visit the G4 kernel.
278 // Sometimes it might not be necessary, e.g. 162 // Sometimes it might not be necessary, e.g., if the scene is stored
279 // in a graphical database (e.g., OpenGL's d 163 // in a graphical database (e.g., OpenGL's display lists) and only
280 // the viewing angle has changed. But graph 164 // the viewing angle has changed. But graphics systems without a
281 // graphical database will always need to vi 165 // graphical database will always need to visit the G4 kernel.
282 166
283 NeedKernelVisit (); // Default is - always 167 NeedKernelVisit (); // Default is - always visit G4 kernel.
284 // Note: this routine sets the fNeedKernelVi 168 // Note: this routine sets the fNeedKernelVisit flag of *all* the views of
285 // the scene. 169 // the scene.
286 170
287 ProcessView (); // The basic log 171 ProcessView (); // The basic logic is here.
288 172
289 // Then a view may have more to do, e.g., di 173 // Then a view may have more to do, e.g., display the graphical
290 // database. That code should come here bef 174 // database. That code should come here before finally...
291 175
292 FinishView (); // Flush streams 176 FinishView (); // Flush streams and/or swap buffers.
293 } 177 }
294 178
295 *********************************************/ 179 *********************************************/
296 180
297 #endif 181 #endif
298 182