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Thanks for the reply.
I was wondering if there is a command in Vizard that will give me the size of the virtual object. I realize that Vizard allows me to scale objects but I would like to know the original size. I figure I can get this from 3DSMAX, but I'm not exactly sure how to go about it in that tool.
Essentially, by getting the AB measure, with respect to the diagram in this post, I only have to adjust the parameters for the distance to the monitor (CD) and the distance the virtual object is from the camera (DB). The distance to the monitor, CD, is fixed since people can only be so far from the screen.
Many thanks,
pete
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