Interact with Virtual Reality Worlds

Create and interact with MATLAB^®virtual world objects, input virtual world data to Simulink^®models

You can use MATLAB functions and classes to interact with virtual reality worlds. Create a virtual world object (vrobject) and node objects (vrnode) to represent a virtual world that you create withSimulink 3D Animation™. Change and control the degrees of freedom for the virtual world from within the MATLAB environment by setting values for the available virtual world nodes and their fields usingvrnodeobject methods.

Virtual reality scenes can contain sensors, which are nodes that generate events and output values depending on time, navigation, and actions and distance changes in the scene. These nodes add interactivity to the virtual world. You can useSimulink 3D Animationfunctions to read sensor field values into simulation models and control simulation based on the user interaction with the virtual scene. You can write an S-function or aMATLAB Functionblock that reads the sensor output.

Functions

Virtual Worlds

`vrworld`	Create new vrworld object associated with virtual world
`vrdrawnow`	Update virtual world
`vrnode`	Create node or handle to existing node
`vr.canvas`	Create virtual reality canvas
`vrclear`	Remove all closed virtual worlds from memory
`vrwho`	List virtual worlds in memory
`vrwhos`	List details about virtual worlds in memory

Virtual World Figures

`vrfigure`	Create virtual reality figure
`vrfigure.capture`	Capture virtual reality figure image
`vrfigure.close`	Close virtual reality figure
`vrfigure.get`	Return property value of vrfigure object
`vrfigure.isvalid`	Check validity of vrfigure object handles
`vrfigure.set`	Set property values of vrfigure object
`vrgcf`	Handle for active virtual reality figure
`vrgcbf`	Current callback vrfigure object
`vrclose`	Close virtual reality figure windows

Virtual World Utilities

`vr.utils.stereo3d`	Stereoscopic vision settings for vr.canvas and vr.figure objects
`vrdir2ori`	Convert viewpoint direction to orientation
`vrori2dir`	Convert viewpoint orientation to direction
`vrrotvec`	Calculate rotation between two vectors
`vrrotmat2vec`	Convert rotation from matrix to axis-angle representation
`vrrotvec2mat`	Convert rotation from axis-angle to matrix representation
`vrifs2patch`	把虚拟世界IndexedFaceSet MATL节点AB patches
`vrpatch2ifs`	Convert MATLAB patches to IndexedFaceSet nodes
`vrjoystick`	Create joystick object
`vrspacemouse`	Create space mouse object

Blocks

VR Source

Read data from virtual world to Simulink model

MATLAB Interaction

Virtual Reality World and Dynamic System Examples

Use virtual worlds that interface to Simulink block diagrams and to MATLAB objects and functions.

Create vrworld Object for a Virtual World

Connect MATLAB to a virtual world and interact with that virtual world through the MATLAB command-line interface by creating vrworld and vrnode objects.

Open a Virtual World with MATLAB

Open a virtual world to view the virtual world in a virtual world viewer, scan its structure, and change virtual world properties from the MATLAB Command Window.

Interact with a Virtual World with MATLAB

Interact with virtual world by using vrnode object methods to set vrworld object property values for all the available virtual world nodes and their fields.

关闭和删除一个vrworld对象

Close virtual worlds and remove them from memory.

Virtual World Data Types

Explore the data types used by nodes for defining objects and the types of data that can appear in the node fields and events.

VRML Sensor Input to Models

Add Sensors to Virtual Worlds

Set up an interface between a Simulink model and sensors in a virtual reality scene.

Modify Remote Virtual World Via Sensor Events

Interactive mode allows clients to modify a remote virtual world via events from sensor nodes defined in the virtual world.

Read Sensor Values

Read a value of a readable field (either exposedField or eventOut), by synchronizing that field with the vrnode/sync method. After synchronization, each time the field changes, the field value updates on the host and you can read its value.

Detect Object Collisions

You can use collision detection to model physical constraints of objects in the real world accurately, to avoid having two objects in the same place at the same time.