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olebegemann's profile
Ole Begemann
Ole Begemann
Ole Begemann
@olebegemann

Ole Begemann

@olebegemann

Co-author of Advanced Swift: https://gumroad.com/a/507458675 . Writes about Swift at https://oleb.net . Also tweets as @elo (in German).

Joined December 2010
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    Ole Begemann ‏@olebegemann Oct 13

    @jemmons Came across your Hairlines article (via @mjtsai). Great post! One addition: AFAIK it’s impossible to draw a perfect 1 px line …

    • Likes 2
    • iKyle electric jemmons
    4:42 PM - 13 Oct 2016
    0 replies 0 retweets 2 likes
      1. Ole Begemann ‏@olebegemann Oct 13

        … on a Plus iPhone with Core Graphics/UIKit. The Plus renders at 3× into a buffer, then scales the image down to screen dimensions (~2.6×) …

        0 replies 1 retweet 3 likes
      2. Ole Begemann ‏@olebegemann Oct 13

        … so you’ll always lose pixel precision. Only OpenGL has a nativeScale mode to render directly to screen pixels. …

        0 replies 1 retweet 6 likes
      3. Ole Begemann ‏@olebegemann Oct 13

        I experimented with this when the 6 Plus came out: https://oleb.net/blog/2014/11/iphone-6-plus-screen/ …

        0 replies 1 retweet 6 likes
      4. View other replies
      5. electric jemmons ‏@jemmons Oct 14

        @olebegemann … Outside of adopting OpenGL, a downscaled, logical-single-pixel line looks next-best to me on-device.

        0 replies 0 retweets 0 likes
      6. Ole Begemann ‏@olebegemann Oct 14

        @jemmons Fair enough.

        0 replies 0 retweets 0 likes

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