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diff --git a/watchmaker/examples/src/java/main/org/uncommons/watchmaker/examples/monalisa/PolygonImageFactory.java b/watchmaker/examples/src/java/main/org/uncommons/watchmaker/examples/monalisa/PolygonImageFactory.java
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+//=============================================================================
+// Copyright 2006-2010 Daniel W. Dyer
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//=============================================================================
+package org.uncommons.watchmaker.examples.monalisa;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Point;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+import org.uncommons.watchmaker.framework.factories.AbstractCandidateFactory;
+
+/**
+ * Creates random polygon-based images.
+ * @author Daniel Dyer
+ */
+public class PolygonImageFactory extends AbstractCandidateFactory<List<ColouredPolygon>>
+{
+    /**
+     * Each image must have at least 2 polygons.
+     */
+    static final int MINIMUM_POLYGON_COUNT = 2;
+
+    /**
+     * Each polygon must have at least 3 points.
+     */
+    static final int MINIMUM_VERTEX_COUNT = 3;
+
+    private final Dimension canvasSize;
+
+    /**
+     * @param canvasSize The size of the canvas on which the image will be rendered.
+     * All polygons must fit within its bounds. 
+     */
+    public PolygonImageFactory(Dimension canvasSize)
+    {
+        this.canvasSize = canvasSize;
+    }
+
+    
+    public List<ColouredPolygon> generateRandomCandidate(Random rng)
+    {
+        List<ColouredPolygon> polygons = new ArrayList<ColouredPolygon>(MINIMUM_POLYGON_COUNT);
+        for (int i = 0; i < MINIMUM_POLYGON_COUNT; i++)
+        {
+            polygons.add(createRandomPolygon(rng));
+        }
+        return polygons;
+    }
+
+
+    ColouredPolygon createRandomPolygon(Random rng)
+    {
+        List<Point> vertices = new ArrayList<Point>(MINIMUM_VERTEX_COUNT);
+        for (int j = 0; j < MINIMUM_VERTEX_COUNT; j++)
+        {
+            vertices.add(new Point(rng.nextInt(canvasSize.width), rng.nextInt(canvasSize.height)));
+        }
+        Color colour = new Color(rng.nextInt(256), rng.nextInt(256), rng.nextInt(256), rng.nextInt(256));
+        return new ColouredPolygon(colour, vertices);
+    }
+}