[Visualpython-users] Limitations Re: transparency, no-shadow objects, r --> infinity

[John K. <joh...@ho...>]

<<Concerning a backdrop a long ways away, the only thing you can do is put 
very large objects a very long ways away. Just like in real life!>>

The problem with this solution is that the viewer is necessarily 
"Cartesian," i.e., disembodied, and as long as zooming is enabled (which I 
think necessary for the rest of the demo), he can always zoom "outside" of 
infinity, as it were-- a behavior I was hoping to avoid.

Is there no other solution?

<<It's based on a note from Dave Scherer a while back that if you 
deliberately set a color to have components greater than 1, you happen to 
get a behavior rather like what you want.>>

The limitation being that one of the RGB color components of the color 
expressed will have a value of one.  (Is this the same as full saturation in 
HSV?)

I've heard that at Walmart, they don't have problems, but "opportunities."  
Maybe you could consider these limitations of the present VPython as 
opportunities for improving the next version.  The package is great and has 
unlimited potential.

John

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