https://go.dev/tour/methods/25

methods 25

package main

import "golang.org/x/tour/pic"
import "image"
import "image/color"

type Image struct{
	w int
	h int
}

func (img Image) ColorModel() color.Model {
	return color.RGBAModel
}

func (img Image) Bounds() image.Rectangle{
	return image.Rect(0, 0, 64, 64)
}

func (img Image) At(x, y int) color.Color {
	return color.RGBA{uint8(x+y), uint8(x+y), 64, 64}
}

func main() {
	m := Image{}
	pic.ShowImage(m)
}