Chrisblob wrote:
> Hi there,
> 
> I'm currently trying to create an animated render where individual frames
> from
> a video capture are image_mapped onto an object, the object has 'filter all'
> applied to it so a light can be shone thru it, and the image projected onto
> a
> screen in the background (like a projector in a cinema). The final animation
> will be used as the menu screen in a home DVD project...
> 
> When I create a shaft of light using scattering media I notice that the
> shaft
> only appears where an object is directly behind the rendered pixel. Can I do
> anything in the media statement to allow the shaft of light to be visible
> with
> nothing in the background? (I wish to have a black background)...
> 
Chris,

     I'm not entirely certain I understand what you're asking here, but 
let me take a hack at it.  You want a shaft of light through your 
scattering media much like you would see traversing a movie theater from 
the projection booth to the screen.

To begin with, POV can't sample along an infinite ray. (This is stated 
in the media section of the documentation.)  So you have to have 
SOMETHING in the background which would limit the length of the traced ray.

However, If your projector, or whatever, is the only light source in the 
room, then the background will probably be in deep shadow.  There should 
be several ways you can arrange this.  It may take some experimentation 
though.

I hope this helps.

Regards,

A.d.B.
> Next question, I have thousands of png images in a directory to use as the
> individual frames for my projected movie. They are image0001.png,
> image0002.png,
> image0003.png etc... What syntax do I need to load the filename
> imagennnn.png,
> where nnnn is the frame number?
> 
> Thats all, until the next thing that stumps me... :-)
> 
> Kind regards,
> 
> Chris W.
> Brisbane, Australia.
> 
> 
>

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