(PECL imagick 2.0.0)
ImagickDraw::polygon — Draws a polygon
$coordinates
)本函数还未编写文档，仅有参数列表。
Draws a polygon using the current stroke, stroke width, and fill color or texture, using the specified array of coordinates.
coordinates
multidimensional array like array( array( 'x' => 3, 'y' => 4 ), array( 'x' => 2, 'y' => 6 ) );
成功时返回 TRUE .