let design0 = """YYYYYYYYYB
PPPPPPPPYB
PRPYYYYYYB
PRPPPPYBYB
PRPRBRYBYB
PRPRYPYBYB
PRPRBBBBYB
PRRRRRRBYB
PRBBBBBBBB
PRRRRRRRRR"""

let design1 = """YYYYYYYYYB
PPPPPPPPYB
PRPYYYYYYB
PRPPBPYBYB
PRPRBRRBYB
PRPYYPYBYB
PRPRBPBBYB
PRRRRRRBYB
PRBBBBBBBB
PRRRRRRRRR"""

let design2 = """YYYYYYYYYB
PPPPPPPPYB
PRPYYYYYYB
PRPBBBRBYB
PRPYBRRBYB
PRPYYPRBYB
PRPYPPPBYB
PRRRRRRBYB
PRBBBBBBBB
PRRRRRRRRR"""

let design3 = """YYYYYYYYYB
PPPPPPPPYB
PRBRRRRRYB
PRBBBBRPYB
PRBYBRRPYB
PRBYYPRPYB
PRBYPPPPYB
PRYYYYYPYB
PRBBBBBBBB
PRRRRRRRRR"""

let design4 = """YYYYYYYYYB
PBBBBBBBRB
PYBRRRRRRB
PYBBBBRPRB
PYBYBRRPRB
PYBYYPRPRB
PYBYPPPPRB
PYYYYYYPRB
PYPPPPPPPB
PRRRRRRRRR"""

let design5 = """RRRRRRRRRP
BBBBBBBBRP
BYBRRRRRRP
BYBBBBRPRP
BYBYBRRPRP
BYBYYPRPRP
BYBYPPPPRP
BYYYYYYPRP
BYPPPPPPPP
BYYYYYYYYY"""

#r "System.Drawing.dll"

open System
open System.Drawing

let toColor = function
   | 'R' -> Color.FromArgb(255,245,117,26)
   | 'Y' -> Color.FromArgb(255,238,241,0)
   | 'P' -> Color.FromArgb(255,161,129,228)
   | 'B' -> Color.FromArgb(255,80,170,241)
   | _ -> Color.White

let toBrush c = new SolidBrush(toColor c) :> Brush

let create (design:string) =
   let image = new Bitmap(500, 500)
   use graphics = Graphics.FromImage(image)
   let lines = design.Split([|'\n'|])
   let k = 50
   lines |> Seq.iteri (fun y line ->
      line |> Seq.iteri (fun x c ->
         let brush = toBrush c
         graphics.FillRectangle(brush, x*k, y*k, k, k)
      )      
   )
   image

#r @"Gif.Components.dll"

open Gif.Components

let encoder = AnimatedGifEncoder()
if encoder.Start(@"c:\app\.gif") then
   encoder.SetFrameRate(5.0f)
   encoder.SetRepeat(0)
   [design0;design0;design1;design2;design3;design4;design5;design5;design5;design5;design4;design3;design2;design1;design0;design0;]
   |> List.iter (fun design -> encoder.AddFrame(create design) |> ignore)
   encoder.Finish() |> ignore