Rect 继承自： PathElement

Adds a rectangle as a new sub-path.

属性

名称	类型	默认值	说明
x	float	required	The x-axis coordinate of the top-left of the rectangle.
y	float	required	The y-axis coordinate of the top-left of the rectangle.
width	float	required	Width of the rectangle.
height	float	required	Height of the rectangle.
border_radius	BorderRadiusValue	0	Optional border radius to round rectangle corners.