Added balance filter.

scripts/modules/filter.balance.js

@@ -0,0 +1,46 @@
+Filter.prototype.filter_balance = function(pixels = this.pixels(),p = null)
+{
+  // / media/filter.color.jpg
+  // : balance 0.5 2.4 1.2
+  
+  p[0] = parseFloat(p[0]);
+  p[1] = p[1] ? parseFloat(p[1]) : parseFloat(p[0]);
+  p[2] = p[2] ? parseFloat(p[2]) : parseFloat(p[0]);
+  
+  var data = pixels.data;
+  
+  // Multiply
+  if(p[0] % 1 !== 0 && p[1] % 1 !== 0 && p[2] % 1 !== 0){
+    console.log("Multi");
+    for (var i = 0; i < data.length; i += 4) {
+      data[i]     = data[i] * p[0];                     // red
+      data[i + 1] = data[i + 1] * p[1]; // green
+      data[i + 2] = data[i + 2] * p[2]; // blue
+      
+      // Clamp
+      data[i] = data[i] < 255 ? data[i] : 255;
+      data[i + 1] = data[i + 1] < 255 ? data[i + 1] : 255;
+      data[i + 2] = data[i + 2] < 255 ? data[i + 2] : 255;
+    }
+  }
+  // Add
+  else{
+    p[0] = parseInt(p[0]);
+    p[1] = p[1] ? parseInt(p[1]) : parseInt(p[0]);
+    p[2] = p[2] ? parseInt(p[2]) : parseInt(p[0]);
+    
+    for (i = 0; i < data.length; i += 4) {
+      data[i]     = data[i] + p[0];                     // red
+      data[i + 1] = data[i + 1] + p[1]; // green
+      data[i + 2] = data[i + 2] + p[2]; // blue
+      
+      // Clamp
+      data[i] = data[i] < 255 ? data[i] : 255;
+      data[i + 1] = data[i + 1] < 255 ? data[i + 1] : 255;
+      data[i + 2] = data[i + 2] < 255 ? data[i + 2] : 255;
+    }
+  }
+  
+	ronin.canvas.clear();
+	ronin.canvas.context().putImageData(pixels, 0, 0, 0, 0, pixels.width, pixels.height);
+}

scripts/modules/filter.js

@@ -22,6 +22,9 @@ function Filter(element)
       case "eval":
         this.filter_eval(this.pixels(),p);
         break;
+      case "balance":
+        this.filter_balance(this.pixels(),p);
+        break;
     }
   }