A ShapeStyle that SwiftUI uses to the fill the shape that you specify.
shape
An instance of a type that conforms to Shape that SwiftUI draws behind the view.
fillStyle
The FillStyle to use when drawing the shape. The default style uses the nonzero winding number rule and antialiasing.
Discussion
議論
Use this modifier to layer a type that conforms to the Shape protocol behind a view. Specify the ShapeStyle that’s used to fill the shape. For example, you can create a Path that outlines a trapezoid: