Draw a straight line realize, round, rectangular and arbitrary graffiti function, brushes, rubber size variable, support for color palettes.
实现绘制直线、圆、矩形及任意涂鸦功能，画笔、橡皮大小可变，支持调色板。
Draw a straight line realize, round, rectangular and arbitrary graffiti function, brushes, rubber size variable, support for color palettes.
实现绘制直线、圆、矩形及任意涂鸦功能，画笔、橡皮大小可变，支持调色板。
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