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I am looking for a POV macro or function to fabricate BMP image file, either
from a Cbits array (24 bits BMP's) or a Bits array and a Cmap array (indexed
BMP's). And conversely, to retrieve Cbits or Bits/Cmap from an existing BMP
image file.
Thank you for any hint or help
Ray Duranton
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Am 01.08.2010 14:48, schrieb guiguibu91:
> I am looking for a POV macro or function to fabricate BMP image file, either
> from a Cbits array (24 bits BMP's) or a Bits array and a Cmap array (indexed
> BMP's). And conversely, to retrieve Cbits or Bits/Cmap from an existing BMP
> image file.
I'm not sure what you mean by "Cbits array" and "Cmap array",
respectively. A google search for "cbits cmap" gives me (among other)
blender source code which appears to be related to file output, as well
as pages referring to what looks like an image processing library.
Either way, it doesn't sound like a job POV-Ray is particularly
well-suited for, and you may be better off using some good image
conversion software, as I guess that's what this all boils down to.
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> I am looking for a POV macro or function to fabricate BMP image file, either
> from a Cbits array (24 bits BMP's) or a Bits array and a Cmap array (indexed
> BMP's). And conversely, to retrieve Cbits or Bits/Cmap from an existing BMP
> image file.
>
> Thank you for any hint or help
> Ray Duranton
>
>
Under Windows, the default output format IS a true colour BMP file. So,
in a sence, when you trace a scene you effectively "fabricate" a BMP
image file. You can also output to some other formats, like PNG, TGA or
TIF/TIFF.
POV-Ray normaly don't create paleted images, but you can use any other
image manipulation application to reduce the colour depth. You will lose
information and quality in that process.
If you want to retreive the information from a bitmap, or any other
supported image format, you can use the image as an image_map and then
use eval_pigment(Pigment, Location) to get the value at a particular point.
Using that, you can scan an image, many formats and dimentions, and use
the information to create a mosaic composed of many "tiles". Take a look
at the #while()....#end loop
Alain
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