Giuela wrote:
> In my animation I need to show an image which is transparent and very few
> visible in the beginning, and gradually becomes less transparent brighter. I've
> tried with the 'filter' and 'transmit' keywords, but I haven't the result I
> expect; with filter 1 the image is too much visible, and I want it to appear
> gradually.
> 
> I know that the .png images can have the information about transparency , that
> is I can decide how many transparent can be a determinate color, but when I use
> this image as image_map texture, Pov-Ray tells me that I can't do it, because
> the image isn't a mapped image. The .gif image is too low resolution color.
> 
> For my animation I thought to use the same image with different brightness and
> transparency, but for the reasons above described, I can't do.
> 
> Has someone suggest me how can I do?
> 
> Thanks
> 
What I've done is have two set of images one of the animation and one of 
a still.
Then use average the two pigments per frame. I have a whole system on my 
web site http://leroywhetstone.s5.com/PovINC/LRfader.zip
Hope this helps!

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