may be you can try CGContextSaveState and CGContextRestoreState ~~ 在 2013年8月20日，上午8:03，Rick Mann <rm...@latencyzero.com> 写道：
> I'm drawing a couple of arcs and then calling ClosePath() to close up the > shape I drew. This works great. But then I repeat the process in a different > place, and stroke the whole thing. Unfortunately, Core Graphics adds a line > from the last point in the closed path to the first point of the new arc I > add. From my reading of the docs, this line shouldn't happen. > > "After closing the subpath, your application can begin a new subpath without > first calling CGContextMoveToPoint. In this case, a new subpath is implicitly > created with a starting and current point equal to the previous subpath’s > starting point." > > Now, the AddArc() docs do say it might be preceded by a straight line > segment, but when the context first starts, there is no starting position; I > wonder why the subpath doesn't behave the same way after ClosePath(). > > iOS 6.1.3, iPad simulator or device. > > -- > Rick > > > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/zoutian62%40icloud.com > > This email sent to zoutia...@icloud.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
