Rectangle

Rectangle is used to add rectangle (Bounding Box) to an image without label selection. It’s useful when you have
only one label.

Param	Type	Default	Description
name	`string`		name of the element
toName	`string`		name of the image to label
[opacity]	`float`	`0.6`	opacity of rectangle
[fillColor]	`string`		rectangle fill color, default is transparent
[strokeColor]	`string`	`"#f48a42"`	stroke color
[strokeWidth]	`number`	`1`	width of the stroke
[canRotate]	`boolean`	`true`	show or hide rotation handle

<View>
  <Rectangle name="rect-1" toName="img-1" />
  <Image name="img-1" value="$img" />
</View>