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List:       kde-kimageshop
Subject:    Re: KisHLineIterator
From:       Casper Boemann <cbr () boemann ! dk>
Date:       2005-06-28 8:38:50
Message-ID: 200506281038.50284.cbr () boemann ! dk
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On Tuesday 28 June 2005 09:40, Michael Thaler wrote:
> What does x and w exactly mean here? Does it mean that the iterator starts
> at x? Does it mean that isDone() returns true when I am at x + w?
yes, but also that the iterator isn't valid if you try moving outside

> Is the iterator faster when I set writeable to false?
yes
No undo data is generated
and no new tiles are generated either if 

with writable=true
undo is generated if the datamanger is set to do that (all alayers are but tmp 
paintdevices are typically not)
when movin into a tile of default data, the default data tile is copied and 
inserted into the datamanager. Not only does that take time it also cost 
memory.
-- 
best regards / venlig hilsen
Casper Boemann
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