├── Readme.md
└── ascii.go


/Readme.md:
--------------------------------------------------------------------------------
 1 | 
 2 | # go-image-to-ascii
 3 | 
 4 | Convert image to ascii.
 5 | 
 6 | ```go
 7 | import "github.com/ivolo/go-image-to-ascii"
 8 | // ..
 9 | 
10 | f, err := os.Open("screenshot.png")
11 | img, err := png.Decode(f)
12 | fmt.Print(ascii.Convert(img))
13 | ```
14 | 
15 | ![image](https://cloud.githubusercontent.com/assets/658544/10387777/1334b9c2-6e19-11e5-9671-1248fe2b541f.png)
16 | 


--------------------------------------------------------------------------------
/ascii.go:
--------------------------------------------------------------------------------
 1 | package ascii
 2 | 
 3 | import (
 4 |   "bytes"
 5 |   "image"
 6 |   "strconv"
 7 |   "github.com/ivolo/go-x256"
 8 |   "github.com/mgutz/ansi"
 9 | )
10 | 
11 | // thanks to IonicaBizau/image-to-ascii for algorithm
12 | func Convert(img image.Image) (str string) {
13 |   var buffer bytes.Buffer
14 |   size := img.Bounds().Max;
15 |   pixels := ".,:;i1tfLCG08@"
16 |   precision := (255*4) / (len(pixels)-1)
17 | 
18 |   // ansi color end constant
19 |   reset := ansi.ColorCode("reset")
20 | 
21 |   for y := 0; y < size.Y; y += 1 {
22 |     for x := 0; x < size.X; x += 1 {
23 |       r, g, b, a := img.At(x, y).RGBA()
24 |       sum := r >> 8 + g >> 8 + b >> 8 + a >> 8
25 |       pixel := pixels[int(sum) / precision]
26 |       // find the closest ansi color code
27 |       code := x256.ClosestCode(uint8(r >> 8), uint8(g >> 8), uint8(b >> 8))
28 |       /// get the ansi color code
29 |       color := ansi.ColorCode(strconv.Itoa(code))
30 |       
31 |       // write the pixel
32 |       buffer.WriteString(color)
33 |       buffer.WriteString(string(pixel))
34 |       buffer.WriteString(reset)
35 |     }
36 |     buffer.WriteString("\n")
37 |   }
38 | 
39 |   return buffer.String()
40 | }


--------------------------------------------------------------------------------