0027158: BRepMesh manage vertex tolerance in parametric space in improper way
[occt.git] / samples / ocafsamples / TPrsStd_Sample.cxx
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bc228f77 1// Created on: 1999-12-27
2// Created by: Sergey RUIN
3// Copyright (c) 1999-1999 Matra Datavision
480bf81e 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
bc228f77 5//
480bf81e 6// This file is part of Open CASCADE Technology software library.
bc228f77 7//
480bf81e 8// This library is free software; you can redistribute it and / or modify it
9// under the terms of the GNU Lesser General Public 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.
bc228f77 13//
480bf81e 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
bc228f77 16
17#include <TDF_Data.hxx>
18#include <TDF_Label.hxx>
19#include <TNaming_NamedShape.hxx>
20#include <TPrsStd_AISPresentation.hxx>
21#include <TPrsStd_AISViewer.hxx>
22#include <AIS_InteractiveContext.hxx>
23#include <AIS_InteractiveObject.hxx>
24#include <V3d_Viewer.hxx>
25#include <Quantity_NameOfColor.hxx>
26#include <TPrsStd_DriverTable.hxx>
27#include <TPrsStd_NamedShapeDriver.hxx>
28#include <TPrsStd_PlaneDriver.hxx>
29#include <TDataXtd_Plane.hxx>
30
31// ====================================================================================
32// This sample contains template for typical actions with OCAF visualization attributes
33// ====================================================================================
34
35#ifdef DEB
36static void Sample()
37{
38 // Starting with data framework
39 Handle(TDF_Data) DF = new TDF_Data();
40 TDF_Label aLabel = DF->Root();
41
42 //----------------------------------- TPrsStd_AISViewer ----------------------------------------
43 //==============================================================================================
44
45 // Setting the TPrsStd_AISViewer in the framework
46
47 Handle(V3d_Viewer) aViewer;
48
49 //... Initialization of aViewer
50
51 //Creating the new AIS_InteractiveContext
52 Handle(AIS_InteractiveContext) ctx = new AIS_InteractiveContext(aViewer);
53
54 //Creating the new TPrsStd_AISViewer attribute initialized with AIS_InteractiveContext
55 Handle(TPrsStd_AISViewer) aisviewer;
56
57 if( !TPrsStd_AISViewer::Has(aLabel) ) { //Check if there has already been set TPrsStd_AISViewer in the framework
58 aisviewer = TPrsStd_AISViewer::New(aLabel, ctx);
59 }
60
61 //Finding TPrsStd_AISViewer attribute in the DataFramework
62 if( TPrsStd_AISViewer::Find(aLabel, aisviewer) ) {
63 aisviewer->Update(); //Update the viewer associated with this attribute
64 }
65
66 //Getting AIS_InteractiveContext from TPrsStd_AISViewer may be done in two ways:
67
68 //1. If we have already gotten TPrsStd_AISViewer attribute (strored in a variable <aisviewer>)
69 Handle(AIS_InteractiveContext) context1 = aisviewer->GetInteractiveContext();
70
71 //2. Getting AIS_InteractiveContext directly
72 Handle(AIS_InteractiveContext) context2;
73 if( TPrsStd_AISViewer::Find(aLabel, context2) ) {
74 //do something...
75 }
76
77 //----------------------------------- TPrsStd_Driver and TPrsStd_DriverTable -------------------
78 //==============================================================================================
79
80 // All work for building AIS_InteractiveObject to be presented by TPrsStd_AISPresentation is done
81 // by drivers which are descendants of deferred class TPrsStd_Driver
82
83 // There is a map of drivers with Standard_GUID as a key.
84
85 // Adding driver to the map of drivers
86
87 Handle(TPrsStd_NamedShapeDriver) NSDriver = new TPrsStd_NamedShapeDriver();
88
89 Handle(TPrsStd_DriverTable) table = TPrsStd_DriverTable::Get();
90
91 Standard_GUID guid = TNaming_NamedShape::GetID();
92
93 table->AddDriver(guid, NSDriver);
94
95 // When the first time called TPrsStd_DriverTable loads standard drivers defined in TPrsStd package
96
97 // Getting driver from the map of drivers
98
99 Standard_GUID driverguid = TNaming_NamedShape::GetID();
100
101 Handle(TPrsStd_NamedShapeDriver) driver;
102
103 if( table->FindDriver(driverguid, driver) )
104 cout << "Driver was found " << endl;
105 else
106 cout << "Driver wasn't found" << endl;
107
108 // Driver can be used to build AIS_InteractiveObject for presenting the given label
109
110 Handle(TPrsStd_PlaneDriver) planedriver;
111
112 if( table->FindDriver(TDataXtd_Plane::GetID(), planedriver) ) {
113
114 TDF_Label planelabel;
115
116 // Finding planelabel ...
117
118 Handle(AIS_InteractiveObject) aisobject;
119
120 planedriver->Update(planelabel, aisobject);
121
122 if( !aisobject.IsNull() ) {
123
124 // Do something with aisobject ...
125
126 }
127 }
128
129 //----------------------------------- TPrsStd_AISPresentation ----------------------------------
130 //==============================================================================================
131
132
133 TDF_Label ShapeLabel;
134
135 // ... Setting TNaming_NamedShape to <ShapeLabel>
136
137 // Setting the new TPrsStd_AISPresentation to <ShapeLabel>
138 // It can be done in two different ways:
139
140 Handle(TPrsStd_AISPresentation) Presenation;
141 // 1. By giving to TPrsStd_AISPresentation attribute Standard_GUID of an attribute to be displayed:
142 // This GUID will be used to find driver for building AIS_InteractiveObject in the map of drivers
143
144 Presenation = TPrsStd_AISPresentation::Set( ShapeLabel, TNaming_NamedShape::GetID() );
145
146 // 2. Or by giving the attribute itself to TPrsStd_AISPresentation attribute:
147 // An ID of attribute will be used to find driver for building AIS_InteractiveObject in the map of drivers
148
149 Handle(TNaming_NamedShape) NS;
150 if( ShapeLabel.FindAttribute( TNaming_NamedShape::GetID(), NS) ) {
151 Presenation = TPrsStd_AISPresentation::Set( NS );
152 }
153
154
155 // Displaying (recomputation of presentation of attribute is done only if presentation is null)
156
157 Handle(TPrsStd_AISPresentation) PRS;
158
159 if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Display();
160 //After call of the method PRS->Display() the presentation of the attribute is marked as displayed in
161 //AIS_InteractiveContext but not in viewer, in order to draw the object in viewer last has to be updated
162
163 TPrsStd_AISViewer::Update(ShapeLabel); //Update presentation of the attribute in a viewer's window
164
165 // Erasing
166
167 if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase();
168 // The method Erase() marks presentation of attribute as erased in AIS_InteractiveContext;
169 // in order to make changes visible in a viewer's window viewer has to be updated
170 TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to erase presenation of the attribute in a viewer's window
171 //Presentation of the attribute is erased from viewer but
172 // stays in AIS_InteractiveContext
173
174 if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase(Standard_True);
175 TPrsStd_AISViewer::Update(ShapeLabel);
176 //Presentation of the attribute is erased
177 //from viewer and removed from AIS_InteractiveContext
178
179 Handle(TPrsStd_AISPresentation) P;
180 if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), P) ) {
181
182 // Updating and displaying presentation of the attribute to be displayed
183
184 P->Display(Standard_True);
185 TPrsStd_AISViewer::Update(ShapeLabel); //Update presenation of the attribute in a viewer's window
186
187 //Getting Standard_GUID of attribute with which TPrsStd_AISPresentation attribute is associeted
188
189 Standard_GUID guid = P->GetDriverGUID();
190
191 //Setting a color to the displayd attribute
192
193 P->SetColor(Quantity_NOC_RED);
194 TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to make changes visible to user
195
196 //Getting transparency the displayd attribute
197
198 Standard_Real transparency = P->Transparency();
199
200 //Getting AIS_InteractiveObject built and stored in the AIS_Presentation attribute
201
202 Handle(AIS_InteractiveObject) AISObject = P->GetAIS();
203 }
204
205 // ... Attribute is modified
206
207
208 //Updating presentation of the attribute in viewer
209
210 if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) )
211 PRS->Update(); //Updates presentation of attribute in AIS_InteractiveContext
212 TPrsStd_AISViewer::Update(ShapeLabel); //Updates presentation in viewer
213
214 return;
215}
216
217#endif