(PECL imagick 2.0.0)
ImagickDraw::getStrokeMiterLimit — Returns the stroke miter limit
本函数还未编写文档，仅有参数列表。
Returns the miter limit. When two line segments meet at a sharp angle and miter joins have been specified for 'lineJoin', it is possible for the miter to extend far beyond the thickness of the line stroking the path. The 'miterLimit' imposes a limit on the ratio of the miter length to the 'lineWidth'.
Returns an int describing the miter limit and 0 if no miter limit is set.