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vrworld/isvalid
10-137
vrworld/isvalid
1 if vrworld object is valid, 0 if not
Syntax
x = isvalid(vrworld_object)
Arguments
vrworld_object A vrworld object representing a virtual world.
Description
A vrworld object is considered valid if its associated virtual world still exists.
x = isvalid(vrworld_object) returns an array that contains a 1 when the elements
of vrworld_object are valid vrworld objects, and returns a 0 when they are not.
You use this method to check whether the vrworld object is still valid. Using a delete
or vrclear command can make a vrworld object invalid.
See Also
isvalid (vrfigure) | vrnode/isvalid
- Simulink 1
- 3D Animation™ 1
- User's Guide 1
- How to Contact MathWorks 2
- Revision History 3
- Contents 5
- Simulink Interface 6
- Viewing Virtual Worlds 10
- Blocks — Alphabetical List 13
- Functions — Alphabetical List 13
- Glossary 13
- Getting Started 15
- 1 Getting Started 16
- Expected Background 17
- MATLAB Compiler Support 23
- VRML Support 25
- VRML Coordinate System 27
- #VRML V2.0 utf8 29
- Installation 49
- Set the Default Viewer 50
- 2 Installation 52
- Set the Default Viewer 53
- V-Realm Builder Help 55
- Set the Default Editor 56
- Set the Default Editor 57
- 3D World Editor Preferences 63
- Figure Preferences 65
- Figure Appearance Preferences 65
- Virtual World Preferences 71
- Uninstall V-Realm Builder 74
- Test the Viewer Installation 75
- Test the Viewer Installation 77
- Open a Viewer Window 92
- View Virtual World Remotely 98
- 3 Simulink Interface 100
- View Virtual World Remotely 101
- Working with VRML Sensors 104
- Interactive Mode 105
- Read VRML Sensor Values 105
- Working with VRML Sensors 107
- Interact with Generated Code 109
- MATLAB Interface 111
- 4 MATLAB Interface 112
- Animation Recording 120
- Animation Recording 121
- File Name Tokens 122
- Define File Name Tokens 123
- Play Animation Files 141
- Build Virtual Reality Worlds 143
- VRML Editors 144
- VRML Editors 145
- Introduction 149
- Define the Problem 149
- Open a New Virtual World 152
- Add VRML Nodes 153
- Link to a Simulink Model 162
- VRML Data Types 166
- VRML Data Types 167
- VRML Data Class Types 168
- Add Sound to a Virtual World 171
- Section Overview 172
- CAD Virtual World Modeling 180
- Link to CAD Virtual Worlds 183
- Using the 3D World Editor 195
- 3D World Editor 196
- 3D World Editor 197
- 6 Using the 3D World Editor 198
- Open the 3D World Editor 199
- 3D World Editor Panes 201
- Create a Virtual World 203
- Basic Editing 205
- Edit Object Properties 207
- Display Event Fields 209
- Expand and Collapse Nodes 209
- Edit VRML Scripts 211
- View Panes 215
- Pivot Point 217
- 3D World Editor Library 218
- 3D World Editor Library 219
- VRML Viewers 222
- Comparison of Viewers 223
- Legacy Viewer 223
- Simulink 3D Animation Viewer 224
- Simulink 3D Animation Viewer 225
- 7 Viewing Virtual Worlds 226
- Specify Rendering Techniques 230
- Specify Rendering Techniques 231
- Mouse Navigation 243
- Viewpoints 248
- Viewpoints 249
- Define and Reset Viewpoints 250
- Define and Reset Viewpoints 251
- Navigate Through Viewpoints 254
- Navigate Through Viewpoints 255
- Record Offline Animations 258
- File Names 259
- Record Offline Animations 261
- Capture Frames 269
- Open the Web Viewer 271
- Navigate Using the Web Viewer 273
- Control Stereoscopic Effects 283
- Orbisnap Viewer 288
- Install Orbisnap 289
- Start Orbisnap 291
- Orbisnap Interface 292
- Orbisnap Interface 293
- Menu Bar 294
- Navigation Panel 295
- Navigate Using Orbisnap 297
- Navigate Using Orbisnap 299
- Cross Product 306
- Joystick Input 307
- Block Parameters Dialog Box 308
- Joystick Input 309
- Normalize Vector 310
- Rotation Between 2 Vectors 311
- Description 312
- Rotation Matrix 313
- Space Mouse Input 314
- 9 Blocks — Alphabetical List 316
- See Also 317
- VR Placeholder 319
- VR Signal Expander 321
- Data Type Support 324
- VR Sink 325
- VR Source 327
- VR Source 329
- VR Text Output 331
- VR Text Output 333
- VR To Video 334
- VR Tracer 335
- VR Tracer 337
- Input Arguments 342
- Examples 343
- More About 343
- Construction 347
- vr.canvas class 349
- Properties 353
- Create a Canvas in a Uipanel 360
- Create a figure 360
- Output Arguments 364
- • “MATLAB Interaction” 374
- Introduced before R2006a 379
- Return Name of a Figure 384
- Create a vrfigure object 384
- View the figure properties 395
- Stereo3DHIT = 0 396
- Arguments 399
- vrgetpref 401
- vrifs2patch 409
- vrjoystick 415
- Method Summary 418
- Keyboard Support 440
- vrsetpref 447
- vrspacemouse 455
- • Camera angle 456
- — Camera offset 457
- vr.utils.stereo3d class 459
- vrworld/get 475
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