dot image generator

img.go

package main

import (
	"fmt"
	"image"
	"image/color"
	"image/png"
	"os"
)

var (
	red    = color.RGBA{255-32, 0, 0, 255}
	yellow = color.RGBA{255,255,0,255}
	orange = color.RGBA{255, 232, 150, 255}
	pink   = color.RGBA{255, 232, 232, 255}
	face   = color.RGBA{64,64, 128, 255}
	black  = color.RGBA{32, 32, 32, 255}
	white  = color.RGBA{255, 255, 255, 255}
	scale  = 1
)

func main() {
	var cells  = [][]color.RGBA{
		{yellow  ,  red,    red,  red },
		{pink  ,  orange, face, pink},
		{orange,  face, black,orange },
		{red, black,  red, black},
	}
	height := len(cells)
	width := len(cells[0])
	img := image.NewRGBA(image.Rect(0, 0, width*scale, height*scale))
	for y:=0; y<height; y++ {
		for x:= 0; x<width; x++ {
			fmt.Printf("[%d][%d],", x, y)
			img.Set(x,y, cells[y][x])
		}
		fmt.Printf("\n")
	}

	f, _ := os.Create("/tmp/img/a.png")
	png.Encode(f, img)
	f.Close()
}