Capturing VR canvas in figure with plots.

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Alexander Tsarev 2016-12-2

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/315167-capturing-vr-canvas-in-figure-with-plots

I am running a simulink vr-sink block and an S-function to display a vr.canvas on a figure with plots.(Modified version of the 'Vehicle Dynamics Visualization with Graphs' example).

I want to record the whole figure in to a video -> canvas with the plots.

To initialize the figure I use:

 vr_world = vrworld(filePath);
 open(vr_world);
 FigHandle = figure();
 c1 = vr.canvas(vr_world, 'Parent', FigHandle);
 v = VideoWriter('newfile.avi');
 set(v,'FrameRate',20,'Quality',90);
 open(v)

Then when I update the figure plots and try to capture a frame:

 F = getframe(FigHandle);
 writeVideo(v,F);

After closing the videowriter, the video will play back, but without the canvas. The video will show the plots updating and a white square where the canvas was. To combat this I tried using:

 c1P = capture(c1); % c1 is created in another similar figure
 imshow(c1P, 'Parent', c1_Axes)
 F = getframe(FigHandle);
 writeVideo(v,F);

While this works it is very slow, and for a couple hour capture it can be a problem. Is there a more direct/ time efficient way to do this type of capture? Thanks.