(PECL imagick 2, PECL imagick 3)
ImagickDraw::getStrokeLineCap — Returns the shape to be used at the end of open subpaths when they are stroked
本函数还未编写文档，仅有参数列表。
Returns the shape to be used at the end of open subpaths when they are stroked.
Returns a LINECAP constant
(imagick::LINECAP_*), or 0 if stroke linecap is not set.