added pixastic Solarize filter

Gruntfile.js

@@ -25,6 +25,7 @@ module.exports = function(grunt) {
     'src/filters/Polar.js',
     'src/filters/Threshold.js',
     'src/filters/Sepia.js',
+    'src/filters/Solarize.js',
 
     // core
     'src/Animation.js', 

src/filters/Solarize.js

@@ -0,0 +1,40 @@
+(function () {
+  /**
+   * Solarize Filter
+   * @function
+   * @memberof Kinetic.Filters
+   * @param {Object} imageData
+   * Pixastic Lib - Solarize filter - v0.1.0
+   * Copyright (c) 2008 Jacob Seidelin, jseidelin@nihilogic.dk, http://blog.nihilogic.dk/
+   * License: [http://www.pixastic.com/lib/license.txt]
+   */
+  Kinetic.Filters.Solarize = function (imageData) {
+      var data = imageData.data,
+          w = imageData.width,
+          h = imageData.height,
+          w4 = w*4,
+          y = h;
+
+      do {
+        var offsetY = (y-1)*w4;
+        var x = w;
+        do {
+          var offset = offsetY + (x-1)*4;
+          var r = data[offset];
+          var g = data[offset+1];
+          var b = data[offset+2];
+
+          if (r > 127) r = 255 - r;
+          if (g > 127) g = 255 - g;
+          if (b > 127) b = 255 - b;
+
+          data[offset] = r;
+          data[offset+1] = g;
+          data[offset+2] = b;
+
+        } while (--x);
+      } while (--y);
+  };
+})();
+
+

test/runner.html

@@ -83,9 +83,7 @@
     <script src="unit/filters/Brighten-test.js"></script>
     <script src="unit/filters/RGB-test.js"></script>
     <script src="unit/filters/HSV-test.js"></script>
-    
     <script src="unit/filters/Invert-test.js"></script>
-
     <script src="unit/filters/Mask-test.js"></script>
     <script src="unit/filters/Grayscale-test.js"></script>
     <script src="unit/filters/Enhance-test.js"></script>
@@ -94,9 +92,9 @@
     <script src="unit/filters/Noise-test.js"></script>
     <script src="unit/filters/Threshold-test.js"></script>
     <script src="unit/filters/Posterize-test.js"></script>
-
     <script src="unit/filters/Sepia-test.js"></script>
     <script src="unit/filters/Emboss-test.js"></script>
+    <script src="unit/filters/Solarize-test.js"></script>
  
 
     <!--=============== functional tests ================-->

test/unit/filters/Solarize-test.js

@@ -0,0 +1,34 @@
+suite('Solarize', function() {
+
+    // ======================================================
+    test('solarize', function(done) {
+        var stage = addStage();
+
+        var imageObj = new Image();
+        imageObj.onload = function() {
+            var layer = new Kinetic.Layer();
+            darth = new Kinetic.Image({
+                x: 10,
+                y: 10,
+                image: imageObj,
+                draggable: true
+            });
+
+            layer.add(darth);
+            stage.add(layer);
+            darth.cache();
+            darth.filters([Kinetic.Filters.Solarize]);
+
+
+            layer.draw();
+
+
+            done();
+
+        };
+        imageObj.src = 'assets/darth-vader.jpg';
+        //imageObj.src = 'assets/lion.png';
+
+    });
+
+});