Image Tile Cutter
sanke at hrz.uni-kassel.de
Thu Jun 14 17:21:14 EDT 2007
Still another remark.
I noticed that since my post one hour ago there are already about 20
downloads of stack <http://www.sanke.org/Software/Create16Tiles.mc>.
As the script of the "create tiles" button relies on imagedata, I think
it necessary to direct your attention to one problem Revolution has with
Paintcompression in Revolution defaults to PNG. The Metacard engine,
which is still about 95% the basis of the Revolution engine, defaults
to RLE, but in the Rev IDE the paintcompression is changed to PNG on
All imagedata processes at present run much slower with PNG
paintcompression as compared to RLE. As I have demonstrated in my test
stack <http://www.sanke.org/Software/TestStackPaintcompression.zip> (14
MB) accompanying my bug report for Bugzilla #5113, imagedata can be in
the extreme 12 (twelve) times slower with the paintcompression set to
PNG than with RLE.
In the case of stack "Create16Tiles" performance in the Rev IDE is about
twice as slow as in the Metacard IDE.
I recommend to Rev users to set the paintcompression to RLE in all cases
where the handling of imagedata is involved.
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