a very easy useful vector drawing tools!
1. select, scale,rotate smoothly.
2. edit beautiful text。
3. import photo from photo library.
4. boolean function for any shape.
5. full function layer system.
6. export in SVG， PDF，PNG JPEG format.
1. Optimize memory
2. Add three texture fill functions, zoom in and out shortcut keys to achieve
3. Achieve simple length labeling and area calculation functions.
4. Fix the problem of program crash caused by erasing some graphics tracks;
5. Solve known bugs