1 files changed, 113 insertions, 0 deletions
diff --git a/js/color_code.js b/js/color_code.js
new file mode 100644
index 0000000..f16e91c
--- /dev/null
+++ b/js/color_code.js
@@ -0,0 +1,113 @@
+
+var MircColor = (function(){
+  var COLORS = [
+    [255,255,255],
+    [0,0,0],
+    [0,0,127],
+    [0,147,0],
+    [255,0,0],
+    [127,0,0],
+    [156,0,156],
+    [252,127,0],
+    [255,255,0],
+    [0,252,0],
+    [0,147,147],
+    [0,255,255],
+    [0,0,252],
+    [255,0,255],
+    [127,127,127],
+    [210,210,210]
+  ]
+
+  function closest_to(pixel){
+    return COLORS.reduce(function(prev, curr, index) {
+      var d = distance(pixel, curr)
+      if (prev[0] > d) {
+        prev[0] = d
+        prev[1] = index
+      }
+      return prev
+    }, [Infinity, -1])[1]
+  }
+
+  function distance(u, v){
+    var r = u[0] - v[0]
+    var g = u[1] - v[1]
+    var b = u[2] - v[2]
+    return Math.sqrt(r*r+g*g+b*b)
+  }
+
+  function fromImageData (pixels, cb){
+    var rows = [],
+        pixel = new Array (4),
+        data = pixels.data,
+        t
+        console.log(pixels)
+    for (var i = 0, h = pixels.height; i < h; i++) {
+      var row = []
+      rows.push(row)
+      for (var j = 0, w = pixels.width; j < w; j++) {
+        t = (i*w+j)*4
+        pixel[0] = data[t]
+        pixel[1] = data[t+1]
+        pixel[2] = data[t+2]
+        pixel[3] = data[t+3]
+        row[j] = closest_to(pixel)
+      }
+    }
+    console.log(rows)
+    if (! cb) return rows
+    else cb (rows)
+  }
+  function fromUrl (url, cb, width) {
+    var img = new Image ()
+    img.onload = function(){
+      var canvas = document.createElement("canvas"), ctx = canvas.getContext('2d')
+      if (width) {
+        canvas.width = width
+        canvas.height = img.naturalHeight * width / img.naturalWidth / 2
+      }
+      else {
+        canvas.width = img.naturalWidth * 2
+        canvas.height = img.naturalHeight
+      }
+      ctx.drawImage(img,0,0,img.naturalWidth,img.naturalHeight,0,0,canvas.width,canvas.height)
+      var pixels = ctx.getImageData(0,0,canvas.width,canvas.height)
+      fromImageData(pixels, cb)
+    }
+    img.src = url
+  }
+  function ascii (rows) {
+    var lines = rows.map(function(str){
+      return str.map(function(index){ return "\\x03" + index + "," + index + "x\\x03" }).join("")
+    }).join("\\n")
+    var txt = '/exec -out printf "' + lines + '"\n'
+    return txt
+  }
+  function asciiFromUrl (url, cb, width) {
+    fromUrl(url, function(rows){
+      cb(ascii(rows), rows)
+    }, width)
+  }
+  function stringFromUrl (url, cb, width) {
+    fromUrl(url, function(rows){
+      cb(rows.map(function(str){
+        return str.map(function(index){ return "\C-c" + index + "," + index + "x\C-c" }).join("")
+      }).join("\n"))
+    }, width)
+  }
+
+  return {
+    colors: COLORS,
+    closest_to: closest_to,
+    distance: distance,
+    fromUrl: fromUrl,
+    fromImageData: fromImageData,
+    stringFromUrl: stringFromUrl,
+    asciiFromUrl: asciiFromUrl,
+    ascii: ascii,
+  }
+
+})()
+
+