(PECL imagick 2, PECL imagick 3)
ImagickDraw::pathLineToRelative — Draws a line path
本函数还未编写文档，仅有参数列表。
Draws a line path from the current point to the given coordinate using relative coordinates. The coordinate then becomes the new current point.
xstarting x coordinate
ystarting y coordinate
没有返回值。