hi 
@atilimWhen shape:setLineStyle(160, 0x000000) with a large width of line,
We can see clearly that each end point of the line is composed by 4 sides, 
if the number of sides is increased according to the width of line, the end points will be more smooth. 
Maybe you can add a parameter to setLineStyle to overwrite the default value.                 
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https://sites.google.com/site/xraystudiogame
http://www.giderosmobile.com/forum/post/quote/1556/Comment_15494
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