func showShapeDetails(shape shapes.Shaper) {
fmt.Print("fill=", shape.Fill(), " ") // All shapes have a fill color
if shape, ok := shape.(shapes.CircularShaper); ok { // shadow variable
fmt.Print("radius=", shape.Radius(), " ")
if shape, ok := shape.(shapes.RegularPolygonalShaper); ok { //shadow
fmt.Print("sides=", shape.Sides(), " ")
}
}
fmt.Println()
}
func sanityCheck(name string, shape shapes.Shaper) {
fmt.Print("name=", name, " ")
fmt.Print("fill=", shape.Fill(), " ")
if shape, ok := shape.(shapes.CircularShaper); ok {
fmt.Print("radius=", shape.Radius(), " ")
if shape, ok := shape.(shapes.RegularPolygonalShaper); ok {
fmt.Print("sides=", shape.Sides(), " ")
}
}
fmt.Println()
}