Calculate pointlist instead of using EllipseAnchor (#2160)

plugins/org.yakindu.base.gmf.runtime/src/org/yakindu/base/gmf/runtime/figures/EllipseAnchorDefaultSizeNodeFigure.java

@@ -1,44 +1,51 @@
-/**
- * Copyright (c) 2011 itemis AG and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- * 
- * Contributors:
- * 	itemis AG - initial API and implementation
- * 
- */
-package org.yakindu.base.gmf.runtime.figures;
-
-import org.eclipse.draw2d.ConnectionAnchor;
-import org.eclipse.draw2d.EllipseAnchor;
-import org.eclipse.draw2d.IFigure;
-import org.eclipse.draw2d.geometry.Dimension;
-import org.eclipse.draw2d.geometry.PrecisionPoint;
-import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;
-
-/**
- * 
- * {@link DefaultSizeNodeFigure} with fixed anchors on the ellipse child
- * 
- * @author andreas muelder (andreas.muelder@itemis.de)
- * 
- */
-public class EllipseAnchorDefaultSizeNodeFigure extends DefaultSizeNodeFigure {
-
-	public EllipseAnchorDefaultSizeNodeFigure(Dimension defSize) {
-		super(defSize);
-	}
-
-	@Override
-	protected ConnectionAnchor createAnchor(PrecisionPoint p) {
-		return createDefaultAnchor();
-	}
-
-	@Override
-	protected ConnectionAnchor createDefaultAnchor() {
-		return new EllipseAnchor((IFigure) getChildren().get(0));
-	}
-
-}
+/**
+ * Copyright (c) 2011 itemis AG and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ * 	itemis AG - initial API and implementation
+ * 
+ */
+package org.yakindu.base.gmf.runtime.figures;
+
+import org.eclipse.draw2d.EllipseAnchor;
+import org.eclipse.draw2d.geometry.Dimension;
+import org.eclipse.draw2d.geometry.Point;
+import org.eclipse.draw2d.geometry.PointList;
+import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;
+
+/**
+ * 
+ * {@link DefaultSizeNodeFigure} with fixed anchors on the ellipse child
+ * {@link EllipseAnchor} somehow places the transition arrow inside of the
+ * figure, thus we calculate the pointlist here.
+ * 
+ * @author andreas muelder (andreas.muelder@itemis.de)
+ * 
+ */
+public class EllipseAnchorDefaultSizeNodeFigure extends DefaultSizeNodeFigure {
+
+	public EllipseAnchorDefaultSizeNodeFigure(Dimension defSize) {
+		super(defSize);
+	}
+
+	@Override
+	public PointList getPolygonPoints() {
+		int points = 64;
+		int radius = getSize().width / 2;
+		Point center = getHandleBounds().getCenter();
+		PointList pointList = new PointList();
+		double slice = 2 * Math.PI / points;
+		for (int i = 0; i < points; i++) {
+			double angle = slice * i;
+			int newX = (int) (center.x + radius * Math.cos(angle));
+			int newY = (int) (center.y + radius * Math.sin(angle));
+			Point p = new Point(newX, newY);
+			pointList.addPoint(p);
+		}
+		return pointList;
+	}
+}