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diff --git a/org.simantics.g3d/src/org/simantics/proconf/g3d/base/JmeRenderingComponent.java b/org.simantics.g3d/src/org/simantics/proconf/g3d/base/JmeRenderingComponent.java
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+/*******************************************************************************
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.
+ * 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.proconf.g3d.base;
+
+import com.jme.renderer.Camera;
+import com.jme.scene.Node;
+import com.jme.system.DisplaySystem;
+
+
+
+
+/**
+ * Rendering component
+ * Allows to change underlying rendering so that
+ * additional information can be presented to the user
+ * 
+ * @author Marko Luukkainen
+ *
+ */
+public abstract class JmeRenderingComponent {
+    public static final int PARALLEL_PROJECTION = 0;
+    public static final int PERSPECTIVE_PROJECTION = 1;
+    
+    /**
+     * Returns root node for nodes that cast and receive shadows.
+     * @return
+     */
+	public abstract Node getShadowRoot();
+	
+	/**
+     * Returns root node for nodes that do not cast shadows.
+     * @return
+     */
+	public abstract Node getNoCastRoot();
+	
+	/**
+	 * Returns root node of the scenegraph
+	 * @return
+	 */
+	public abstract Node getRoot();
+	
+	/**
+	 * Returns root node of orthogonal nodes (nodes that always face the camera)
+	 * @return
+	 */
+	public abstract Node getOrthoNode();
+	
+	/**
+	 * Returns root node for nodes that do not cast or receive shadows.
+	 * @return
+	 */
+	public abstract Node getNoShadowRoot();
+	
+	public abstract void init(DisplaySystem displaySystem);
+	
+	/**
+	 * Sets projection policy.
+	 * FIXME : this was for Xith compatibility!
+	 * @param policy
+	 */
+	public abstract void setProjectionPolicy(int policy);
+    public abstract int getProjectionPolicy();
+    
+    public abstract float getScreenScale();
+    public abstract void setScreenScale(float screenScale);
+    public abstract float getFieldOfView();
+    public abstract void dispose();
+    
+    /**
+     * Update flag (Return true if view needs to be rendered)
+     * @return
+     */
+    public boolean update() {return false;}
+    public abstract Camera getCamera();
+    
+    public abstract void render();
+    public abstract void resize(int width, int height);
+    public abstract DisplaySystem getDisplaySystem();
+    
+    /**
+     * TODO : this is for debugging purposes and will be removed.
+     * @param text
+     */
+    public abstract void setDebugText(String text);
+}