initial position of vrml scene when run new simulation

Question

Hi all when i run simulation in my simulink model whit vrml scene, I have a certain position of my vrml scene, when run a new simulation I need that the vrml scene have initial position as the the final position of last simulation but this does not happen. Anyone have a suggestion to resolve this? thanks

Prashant Kumar · Accepted Answer

In order to achieve the same initial conditions in each simulation run, virtual world is always re-loaded from the associated VRML file at the beginning of simulation.
 
If you need to start the next simulation where the previous has ended, you shall save the values of the object properties to the VRML file.
 
At some suitable place (StopFcn callback etc.) put something like this:
 
% extract model name
model_name = bdroot(gcs);     
% Here we assume that you have the VR Sink block under its original name in 
% the model
% get the handle to the virtual world associated with the VR Sink  
wh = vrworld(get_param([model_name '/VR Sink'], 'WorldFileName'));
% save the current status of the virtual world to the file associated 
% with the  VR Sink
save(wh, get(wh,'FileName'));
Of course, in order to preserve the initial status of your scene, you should backup your original VRML file and arrange copying it to your working scene, when you want to start the simulation with initial status.

initial position of vrml scene when run new simulation

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