小巧但是不简单的画图工具 . 支持剪裁翻转画图等等功能.

Sketch v3.1.1 Mac OS X | 22 MB

Sketch: graphic design for a digital world. Powerful tools and an elegant interface, in a single award-winning package. Because making beautiful things should be a joy, not a burden. Sketch supports multiple fills, borders and shadows per layer; has powerful non-destructive boolean operations; smart pixel alignment; and makes exporting a breeze with automatic slicing and multiple resolution export. Vector tools and basic shapes are the foundation; whether you are designing icons, websites, interfaces or anything else. Combine these into complex shapes with non-destructive boolean operations, leaving you free to edit them in the future, then apply advanced layer style options like multiple shadows, fills, gradients, noise, blending, background blurring, and more.

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http://www.iiiup.com/5F0/Sketch.v3.1.1.dmg