Re: [Visualpython-users] Cast a shadow

[Bruce S. <Bru...@nc...>]

Sorry, currently there's no way to cast shadows. And you can only put 
lights at infinity. Jonathan Brandmeyer is working on a version that 
will let you put lights anywhere, but even with that advance there won't 
be shadows, which typically require ray-tracing, which is slow. A minor 
footnote is that at vpython.org there is a routine for exporting a 
VPython scene to Pov-Ray, a freeware ray tracer, which does produce shadows.

Bruce Sherwood

Nick Lunt wrote:

>Hello,
>
>I've have just installed vpython and have to say I am loving messing around
>with it.
>
>Anyhoo, I've had a look through the archives but unfortunately I could not
>find a search function for past posts, hence my question, which I'm sure
>must of been asked before ;)
>
>Is there anyway to have objects cast a shadow ? I can see that when I rotate
>a box object that there is a shadow but when I move a sphere object around
>inside a box (or between two boxes as in the tutorial) there is no shadow of
>the sphere.
>
>I can get the current vectors for the default 2 lights (print scene.lights)
>but I'm unsure of how to manipulate my own lights (or the default ones) to
>get a moving object inside a box to generate a shadow.
>
>So basically can anyone please give me a quick rundown on how to generate my
>own lighting to enable shadows on moving objects ?
>
>I have attached my code in the hope that it my help to explain what I'm
>trying to do.
>
>Many thanks,
>Nick .
>
>  
>