[CF List] PNG Images

Jeffrey Hantin jhantin at derringer.net
Fri Jun 30 13:09:15 CDT 2000


>
     
       Now in theory, you could take the png's and convert them to a like 
     
     sized xpm
>
     
      image - I don't really see the point - once png support gets a little 
     
     better, I
>
     
      would actually see dropping the xpm images as pretty likely (not very 
     
     bandwidth
>
     
      friendly and don't gain us anything of png).
     
     
One thing I did notice as an advantage of xpm: a single xpm can 
support multiple colormaps for different color depths, thus allowing 
the client to choose a colormap appropriate to its visual and depth.  
This also eliminates the need to have separate monochrome xbm images, 
unless they're used to deal with downlevel clients-- and I don't know 
that clients that old are supported.  So for that matter, why not drop 
the xbm?

>
     
       Actually one thing they gain is a smaller colorspace.  With agreement 
     
     with me,
>
     
      David also used more than the standard 20 or so colors we use for 
     
     Xpm's - I
>
     
      think he went up to about 100 or so - enough so an 8 bit display could 
     
     still
>
     
      show all of them, but also enough to improve quality.
     
     
I think part of the issue is whether the graphics should look iconic 
or photographic.  In 24x24 or even 32x32, I think it's a small enough 
space to warrant iconic style, which also copes well with a restricted 
colormap.





    
    


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