"Bob Armstrong" <bob### [at] cosycom> wrote in message 
news:web.44174d8d9ca30044945ca8690@news.povray.org...
>I have a bit map image , http://www.cosy.com/cosycube.gif , where I've made
> the background transparent ,
>
>  #declare CCube = object { box { < 0, 0 , -.2 > , < 1 , 1 , .2 >
>                             pigment { image_map { png "CoSyCubeFULL.png"
>                                                   transmit 2 , 1.0 } }  }
>
> but it appears the figure is projected only on the front and back of 
> planes
> of the box . How do I make it solid thru the thickness of the box which is
> what I expected by default ?

You've encountered a common misconception. Objects in POV are not solid, 
merely surfaces, until acted upon by other objects not just textures.

A possible solution could be to use height_field for the box-like object 
after creating a second image especially for that, and apply the image_map 
pigment onto it.
Should be fairly easy in your case since that cosycube.gif is already of the 
right form. You'll just need to do an inverse of the colors if you need the 
black part to exist instead of the white part (white is high point, black 
low). The black portion can then be set to not show up at all by using (in 
the height_field) keyword water_level followed by a value greater than 0 but 
less than 1 (as long as the white is fully white).
Oh, and scale things accordingly, of course, to match the image file's 
aspect ratio or resolution. Again, yours appears to be square already to not 
a problem. Would only need a certain depth scale. Just be sure to apply the 
image_map (if you even need one for this) with a rotate 90*x so it lays 
horizontally onto the HF.

Hope that helps.

-- 
Bob H  www.3digitaleyes.com
http://3digitaleyes.com/imagery/

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