How To Remove Line in Core Graphics
Question
我现在在我的应用程序中使用CGContextAddLineToPoint绘制一条线，我想从给定的点中删除一条线，我该怎么做？
1 answers
solution1
5 2012-05-15 13:30:46
You can erase,
Given the two points, draw the line with same attributes(lineWidth etc.,) by setting the CGContextSetBlendMode(context, kCGBlendModeClear) .
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