diff --git a/org.eclipse.emf.cdo.threedee.ui/icons/parameters.gif b/org.eclipse.emf.cdo.threedee.ui/icons/parameters.gif
new file mode 100644
index 0000000..d37495a
--- /dev/null
+++ b/org.eclipse.emf.cdo.threedee.ui/icons/parameters.gif
Binary files differ
diff --git a/org.eclipse.emf.cdo.threedee.ui/plugin.xml b/org.eclipse.emf.cdo.threedee.ui/plugin.xml
index cec4052..abb64e7 100644
--- a/org.eclipse.emf.cdo.threedee.ui/plugin.xml
+++ b/org.eclipse.emf.cdo.threedee.ui/plugin.xml
@@ -19,14 +19,14 @@
             class="org.eclipse.emf.cdo.threedee.ui.ThreeDeeView"

             icon="icons/world.gif"

             id="org.eclipse.emf.cdo.threedee.ui.ThreeDeeWorld"

-            name="ThreeDee World">

+            name="World">

       </view>

       <view

             category="org.eclipse.emf.cdo.threedee"

-            class="org.eclipse.emf.cdo.threedee.ui.InfoTransformView"

-            icon="icons/text.gif"

-            id="org.eclipse.emf.cdo.threedee.ui.InfoTransformView"

-            name="ThreeDee Info Transform">

+            class="org.eclipse.emf.cdo.threedee.ui.ParametersView"

+            icon="icons/parameters.gif"

+            id="org.eclipse.emf.cdo.threedee.ui.ParametersView"

+            name="Parameters">

       </view>

    </extension>

 

diff --git a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/InfoTransformView.java b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ParametersView.java
similarity index 89%
rename from org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/InfoTransformView.java
rename to org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ParametersView.java
index c159e8b..03aaf11 100644
--- a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/InfoTransformView.java
+++ b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ParametersView.java
@@ -12,6 +12,7 @@
 
 import org.eclipse.emf.cdo.threedee.ui.ThreeDeeWorld.InfoPanel;
 import org.eclipse.emf.cdo.threedee.ui.bundle.OM;
+import org.eclipse.emf.cdo.threedee.ui.nodes.RootElementGroup;
 
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
@@ -36,11 +37,11 @@
 /**
  * @author Eike Stepper
  */
-public class InfoTransformView extends ViewPart
+public class ParametersView extends ViewPart
 {
-  public static final String ID = "org.eclipse.emf.cdo.threedee.ui.InfoTransformView";
+  public static final String ID = "org.eclipse.emf.cdo.threedee.ui.ParametersView";
 
-  public InfoTransformView()
+  public ParametersView()
   {
   }
 
@@ -59,6 +60,7 @@
       }
 
       ThreeDeeView view = (ThreeDeeView)page.findView(ThreeDeeView.ID);
+      createRootRadius(composite, view);
       createLightDirection(composite, view);
       createInfoPanelTransform(composite, view);
     }
@@ -68,6 +70,23 @@
     }
   }
 
+  private void createRootRadius(Composite composite, ThreeDeeView view)
+  {
+    final ThreeDeeWorld world = view.getWorld();
+    final RootElementGroup root = world.getRoot();
+
+    final Transformer transformer = new Transformer(composite, "Radius", 0f, 2f, root.getRadiusFactor());
+    transformer.addSelectionListener(new SelectionAdapter()
+    {
+      @Override
+      public void widgetSelected(SelectionEvent e)
+      {
+        root.setRadiusFactor(transformer.getValue());
+        world.layout();
+      }
+    });
+  }
+
   private void createLightDirection(Composite composite, ThreeDeeView view)
   {
     final DirectionalLight directionalLight = view.getWorld().getDirectionalLight();
diff --git a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeePerspective.java b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeePerspective.java
index 20c60a9..2ed28f9 100644
--- a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeePerspective.java
+++ b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeePerspective.java
@@ -26,8 +26,10 @@
     String editorArea = layout.getEditorArea();

     layout.setEditorAreaVisible(false);

 

-    layout.addView(ElementView.ID, IPageLayout.LEFT, 0.15f, editorArea);

+    layout.addView(ElementView.ID, IPageLayout.LEFT, 0.2f, editorArea);

     layout.addView(DescriptorView.ID, IPageLayout.BOTTOM, 0.75f, ElementView.ID);

+    layout.addView(ParametersView.ID, IPageLayout.BOTTOM, 0.75f, DescriptorView.ID);

+

     // layout.addView(ThreeDeeView.ID, IPageLayout.LEFT, 1.0f, editorArea);

     layout.addStandaloneView(ThreeDeeView.ID, false, IPageLayout.LEFT, 1.0f, editorArea);

   }

diff --git a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeeWorld.java b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeeWorld.java
index 7e7f859..7bad3b6 100644
--- a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeeWorld.java
+++ b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/ThreeDeeWorld.java
@@ -317,6 +317,11 @@
     return infoPanel;

   }

 

+  public RootElementGroup getRoot()

+  {

+    return root;

+  }

+

   public void addElement(Element element)

   {

     if (!elementGroups.containsKey(element))

diff --git a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/nodes/RootElementGroup.java b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/nodes/RootElementGroup.java
index 584a620..4c0e7fd 100644
--- a/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/nodes/RootElementGroup.java
+++ b/org.eclipse.emf.cdo.threedee.ui/src/org/eclipse/emf/cdo/threedee/ui/nodes/RootElementGroup.java
@@ -30,11 +30,23 @@
 

   private static final double TWO_PI = 2.0d * PI;

 

+  private double radiusFactor = 0.8d;

+

   public RootElementGroup(ThreeDeeWorld world)

   {

     super(world, null, createAppearance());

   }

 

+  public double getRadiusFactor()

+  {

+    return radiusFactor;

+  }

+

+  public void setRadiusFactor(double radiusFactor)

+  {

+    this.radiusFactor = radiusFactor;

+  }

+

   @Override

   protected void layout(ThreeDeeNode<Element>[] children, int n)

   {

@@ -54,7 +66,7 @@
 

     double distanceAngle = TWO_PI / n;

     double phi = 0.0d;

-    radius *= 0.8d;

+    radius *= radiusFactor;

 

     for (int i = 0; i < n; i++)

     {