User`s guide

Scheduled 2-D AVI Recording with MATLAB
4-25
Scheduled 2-D AVI Recording with MATLAB
This topic describes how to schedule the recording of a 2-D animation using the MATLAB
interface for a virtual world that is associated with a Simulink model. You control the
animation file recording by presetting a time interval. The Simulink 3D Animation
software records the animation during this interval in the simulation. In this example,
the timing of the recorded animation file derives from the simulation time. One second of
the recorded animation time corresponds to one second of Simulink time.
This procedure uses the vrplanets example. It describes how to create an .avi
animation filename with the default name format.
1
Run the Simulink model for vrplanets. In the MATLAB window, type
vrplanets
The Simulink model is displayed. Also by default, the Simulink 3D Animation
Viewer for that model is loaded and becomes active. If the viewer is not displayed,
double-click the Simulink® 3D Animation block in the Simulink model.
2
To work with the virtual world associated with vrplanets from the MATLAB
interface, retrieve the virtual world handle. Use the vrwhos command. Type
vrwhos
If the result indicates that only one vrworld object is in the workspace, assign its
handle directly to a variable. Type
myworld = vrwho;
If multiple virtual worlds are listed, you must select which of these virtual worlds
you want to manipulate. To select the virtual world, you can use indexing or a
selection method using a string comparison of virtual world descriptions. For the
indexing method, type
worlds = vrwho;
myworld = worlds(1);
For the string comparison method, type
worlds = vrwho;
myworld =
worlds(strcmp('Planets',get(worlds,'Description')));