Build Coupon UI - Right edge semi circle (https://medium.com/@akexorcist/how-we-built-developer-friendly-coupon-ui-in-android-part-2-78933730d335)

right_edge_semi_circle.kt

val canvas: Canvas = /* ... */
val areaWidth = canvas.width
val areaHeight = canvas.height
val borderWidth = 2
val cornerRadius = 10
val semiCircleRadius = 20

val path = Path().apply {
	/* ... */
	// Right edge semi circle
	arcTo(
        left = (areaWidth / 2f) - ((semiCircleRadius / 2f) + (borderWidth / 2f)),
        top = (areaHeight / 2f) - (semiCircleRadius / 2f),
        right = (areaWidth / 2f) + ((semiCircleRadius / 2f) - (borderWidth / 2f)),
        bottom = (areaHeight / 2f) + (semiCircleRadius / 2f),
        startAngle = 270,
        sweepAngle = -180,
        forceMoveTo = false)
	/* ... */
}