On Jul 29, 2010, at 1:26 PM, Tony Romano wrote: > I have a document based Cocoa App and I am trying to understand what is > causing these residual lines to happen. Attached is a link to what I am > referring to. The solid blue lines are the new lines after they have moved. > The greyish lines are what's being left behind. > http://dl.dropbox.com/u/5614061/Screen shot 2010-07-29 at 1.08.36 PM.png. > Notice they look like borders from the old lines.
A slightly better encoded version of your URL is <http://dl.dropbox.com/u/5614061/Screen%20shot%202010-07-29%20at%201.08.36%20PM.png> How are you moving your blue lines? Could you try drawing clear color lines over the original position of the blue lines (i.e. explicitly erasing the artifacts) before drawing the blue lines in their new position? Could you show a bit more code that demonstrates how your drawing is being done?
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