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 __   _      ___     __   __   _    _      _____  
| || | ||   / _ \\   \ \\/ // | || | ||   / ___// 
| '--' ||  / //\ \\   \   //  | || | ||   \___ \\ 
| .--. || |  ___  ||  / . \\  | \\_/ ||   /    // 
|_|| |_|| |_||  |_|| /_//\_\\  \____//   /____//  
`-`  `-`  `-`   `-`  `-`  --`   `---`   `-----`

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發送短信 : gHull: A three-dimensional convex hull algorithm for graphics hardware