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diff --git a/src/net/sourceforge/plantuml/activitydiagram3/ftile/Diamond.java b/src/net/sourceforge/plantuml/activitydiagram3/ftile/Diamond.java
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+++ b/src/net/sourceforge/plantuml/activitydiagram3/ftile/Diamond.java
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+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2014, Arnaud Roques
+ *
+ * Project Info:  http://plantuml.sourceforge.net
+ * 
+ * This file is part of PlantUML.
+ *
+ * Licensed under The MIT License (Massachusetts Institute of Technology License)
+ * 
+ * See http://opensource.org/licenses/MIT
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ *
+ * Original Author:  Arnaud Roques
+ */
+package net.sourceforge.plantuml.activitydiagram3.ftile;
+
+import java.awt.geom.Dimension2D;
+
+import net.sourceforge.plantuml.creole.Stencil;
+import net.sourceforge.plantuml.graphic.StringBounder;
+import net.sourceforge.plantuml.graphic.TextBlock;
+import net.sourceforge.plantuml.ugraphic.UPolygon;
+
+public class Diamond {
+
+	final static public double diamondHalfSize = 12;
+
+	public static UPolygon asPolygon(boolean shadowing) {
+		final UPolygon diams = new UPolygon();
+
+		diams.addPoint(diamondHalfSize, 0);
+		diams.addPoint(diamondHalfSize * 2, diamondHalfSize);
+		diams.addPoint(diamondHalfSize, diamondHalfSize * 2);
+		diams.addPoint(0, diamondHalfSize);
+		diams.addPoint(diamondHalfSize, 0);
+
+		if (shadowing) {
+			diams.setDeltaShadow(3);
+		}
+
+		return diams;
+	}
+
+	public static UPolygon asPolygon(boolean shadowing, double width, double height) {
+		final UPolygon diams = new UPolygon();
+
+		diams.addPoint(diamondHalfSize, 0);
+		diams.addPoint(width - diamondHalfSize, 0);
+		diams.addPoint(width, height / 2);
+		diams.addPoint(width - diamondHalfSize, height);
+		diams.addPoint(diamondHalfSize, height);
+		diams.addPoint(0, height / 2);
+		diams.addPoint(diamondHalfSize, 0);
+
+		if (shadowing) {
+			diams.setDeltaShadow(3);
+		}
+
+		return diams;
+	}
+
+	public static Stencil asStencil(final TextBlock tb) {
+		return new Stencil() {
+
+			private final double getDeltaX(double height, double y) {
+				final double p = y / height * 2;
+				if (p <= 1) {
+					return diamondHalfSize * p;
+				}
+				return diamondHalfSize * (2 - p);
+			}
+
+			public double getStartingX(StringBounder stringBounder, double y) {
+				final Dimension2D dim = tb.calculateDimension(stringBounder);
+				return -getDeltaX(dim.getHeight(), y);
+			}
+
+			public double getEndingX(StringBounder stringBounder, double y) {
+				final Dimension2D dim = tb.calculateDimension(stringBounder);
+				return dim.getWidth() + getDeltaX(dim.getHeight(), y);
+			}
+		};
+	}
+
+	public static UPolygon asPolygonFoo1(boolean shadowing, double width, double height) {
+		final UPolygon diams = new UPolygon();
+
+		diams.addPoint(width / 2, 0);
+		diams.addPoint(width, height / 2);
+		diams.addPoint(width / 2, height);
+		diams.addPoint(0, height / 2);
+
+		if (shadowing) {
+			diams.setDeltaShadow(3);
+		}
+
+		return diams;
+	}
+
+}