Integer interpretation for bluescale picture

main.go

package main

import (
	"golang.org/x/tour/pic"
)

func Pic(dx, dy int) [][]uint8 {
	picture := make([][]uint8, dy)
	
	for y := 0; y < dy; y++ {
		row := make([]uint8, dx)
		
		for x := 0; x < dx; x++ {
			row[x] = uint8((x+y) / 2)
		}
		
		picture[y] = row
	}
		
	return picture
}

func main() {
	pic.Show(Pic)
}