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iOS Application Isuue

obaidahmedobaidahmed Posts: 18New Users
edited August 2012 in iOS SDK Development
I am creating drawing application like this:, but I have one issue. The problem is that I have achieved everything but when I draw line with one color and then draw line with another color, it gives me combination of both colors at the point of intersection. Like this:


I want to overlap red line on the top of other lines. Tell me how I can achieve this effect. Sample code can be downloaded from here:
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