5 files changed, 367 insertions, 366 deletions

diff --git a/logo/src/xlogo/kernel/perspective/ElementLine.java b/logo/src/xlogo/kernel/perspective/ElementLine.java
index 6a80557..09a0108 100644
--- a/logo/src/xlogo/kernel/perspective/ElementLine.java
+++ b/logo/src/xlogo/kernel/perspective/ElementLine.java
@@ -1,29 +1,29 @@
 /* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
  * Copyright (C) 2013 Marko Zivkovic
- * 
+ *
  * Contact Information: marko88zivkovic at gmail dot com
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of the GNU General Public License as published by the Free 
- * Software Foundation; either version 2 of the License, or (at your option) 
- * any later version.  This program is distributed in the hope that it will be 
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
- * Public License for more details.  You should have received a copy of the 
- * GNU General Public License along with this program; if not, write to the Free 
- * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.  You should have received a copy of the
+ * GNU General Public License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
- * 
- * 
+ *
+ *
  * This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
  * during his Bachelor thesis at the computer science department of ETH Zurich,
  * in the year 2013 and/or during future work.
- * 
+ *
  * It is a reengineered version of XLogo written by Loic Le Coq, published
  * under the GPL License at http://xlogo.tuxfamily.org/
- * 
+ *
  * Contents of this file were initially written by Loic Le Coq,
- * modifications, extensions, refactorings might have been applied by Marko Zivkovic 
+ * modifications, extensions, refactorings might have been applied by Marko Zivkovic
  */
 
 package xlogo.kernel.perspective;
@@ -50,7 +50,7 @@ import javax.vecmath.Vector3d;
 import xlogo.kernel.LogoError;
 
 /**
- * 
+ *
  * @author Marko Zivkovic - I decoupled this from Application
  *
  */
@@ -58,20 +58,20 @@ public class ElementLine extends Element3D
 {
 	/**
 	 * This float stores the line Width for each 3D line
-	 * 
+	 *
 	 * @uml.property name="lineWidth"
 	 */
-	private float	lineWidth;
-	
-	public ElementLine(Viewer3D v3d, float lineWidth)
+	private final float	lineWidth;
+
+	public ElementLine(final Viewer3D v3d, final float lineWidth)
 	{
 		super(v3d);
 		this.lineWidth = lineWidth; //app.getKernel().getActiveTurtle().getPenWidth();
 	}
-	
+
 	public void addToScene() throws LogoError
 	{
-		int size = vertex.size();
+		final int size = vertex.size();
 		if (size > 1)
 		{
 			if (lineWidth == 0.5)
@@ -80,25 +80,25 @@ public class ElementLine extends Element3D
 				createComplexLine(size);
 		}
 	}
-	
+
 	/**
 	 * This method draws a line with width 1
-	 * 
+	 *
 	 * @param size
 	 */
-	private void createSimpleLine(int size)
+	private void createSimpleLine(final int size)
 	{
-		int[] tab = { size };
-		LineStripArray line = new LineStripArray(size, LineStripArray.COORDINATES | LineStripArray.COLOR_3, tab);
+		final int[] tab = { size };
+		final LineStripArray line = new LineStripArray(size, GeometryArray.COORDINATES | GeometryArray.COLOR_3, tab);
 		for (int i = 0; i < size; i++)
 		{
 			line.setCoordinate(i, vertex.get(i));
 			// System.out.println("sommet "+(2*i-1)+" "+vertex.get(i).x+" "+vertex.get(i).y+" "+vertex.get(i).z+" ");
 			line.setColor(i, new Color3f(color.get(i)));
 		}
-		Shape3D s = new Shape3D(line);
-		Appearance appear = new Appearance();
-		Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), new Color3f(0.0f, 0f, 0f), new Color3f(1f, 1.0f,
+		final Shape3D s = new Shape3D(line);
+		final Appearance appear = new Appearance();
+		final Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), new Color3f(0.0f, 0f, 0f), new Color3f(1f, 1.0f,
 				1.0f), new Color3f(1f, 1f, 1f), 64);
 		appear.setMaterial(mat);
 		appear.setLineAttributes(new LineAttributes(2 * lineWidth, LineAttributes.PATTERN_SOLID, false));
@@ -115,27 +115,27 @@ public class ElementLine extends Element3D
 		 * }
 		 */
 	}
-	
+
 	/**
 	 * This method draws a sequence of lines with a width different from 1
 	 * Draws a cylinder around the line
-	 * 
+	 *
 	 * @param size
 	 */
-	
-	private void createComplexLine(int size)
+
+	private void createComplexLine(final int size)
 	{
 		for (int i = 0; i < size - 1; i++)
 		{
 			createLine(vertex.get(i), vertex.get(i + 1), new Color3f(color.get(i + 1)));
 		}
-		
+
 	}
-	
+
 	/**
 	 * This method creates an elementary line with a width different from 1
 	 * It draws a cylinder around the line and two spheres on each extremities
-	 * 
+	 *
 	 * @param p1
 	 *            the first point
 	 * @param p2
@@ -143,93 +143,93 @@ public class ElementLine extends Element3D
 	 * @param color
 	 *            the sphere color
 	 */
-	private void createLine(Point3d p1, Point3d p2, Color3f color)
+	private void createLine(final Point3d p1, final Point3d p2, final Color3f color)
 	{
 		// create a new CylinderTransformer between the two atoms
-		CylinderTransformer cT = new CylinderTransformer(p1, p2);
-		
+		final CylinderTransformer cT = new CylinderTransformer(p1, p2);
+
 		// get the length
-		double length = cT.getLength();
-		float radius = lineWidth / 1000;
+		final double length = cT.getLength();
+		final float radius = lineWidth / 1000;
 		// holds the translation
-		Transform3D transform1 = new Transform3D();
+		final Transform3D transform1 = new Transform3D();
 		// ...move the coordinates there
 		transform1.setTranslation(cT.getTranslation());
-		
+
 		// get the axis and angle for rotation
-		AxisAngle4d rotation = cT.getAxisAngle();
-		Transform3D transform2 = new Transform3D();
+		final AxisAngle4d rotation = cT.getAxisAngle();
+		final Transform3D transform2 = new Transform3D();
 		transform2.setRotation(rotation);
-		
+
 		// combine the translation and rotation into transform1
 		transform1.mul(transform2);
-		
+
 		// create a new Cylinder
-		Appearance appear = new Appearance();
-		Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), color, new Color3f(1f, 1.0f, 1.0f), new Color3f(1f,
+		final Appearance appear = new Appearance();
+		final Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), color, new Color3f(1f, 1.0f, 1.0f), new Color3f(1f,
 				1f, 1f), 64);
 		appear.setMaterial(mat);
-		PolygonAttributes pa = new PolygonAttributes();
+		final PolygonAttributes pa = new PolygonAttributes();
 		pa.setCullFace(PolygonAttributes.CULL_NONE);
 		pa.setBackFaceNormalFlip(true);
 		appear.setPolygonAttributes(pa);
-		Cylinder cyl = new Cylinder(radius, (float) length, appear);
-		
+		final Cylinder cyl = new Cylinder(radius, (float) length, appear);
+
 		// and add it to the TransformGroup
-		TransformGroup tg = new TransformGroup();
+		final TransformGroup tg = new TransformGroup();
 		tg.setTransform(transform1);
 		tg.addChild(cyl);
 		v3d.add2DText(tg);
-		
+
 		// Add Sphere to the line extremities.
-		Sphere sphere1 = new Sphere(radius, appear);
-		TransformGroup tg2 = new TransformGroup();
-		Transform3D transform3 = new Transform3D();
+		final Sphere sphere1 = new Sphere(radius, appear);
+		final TransformGroup tg2 = new TransformGroup();
+		final Transform3D transform3 = new Transform3D();
 		transform3.setTranslation(new Vector3d(p1));
 		tg2.setTransform(transform3);
 		tg2.addChild(sphere1);
 		v3d.add2DText(tg2);
-		
-		Sphere sphere2 = new Sphere(radius, appear);
-		TransformGroup tg3 = new TransformGroup();
-		Transform3D transform4 = new Transform3D();
+
+		final Sphere sphere2 = new Sphere(radius, appear);
+		final TransformGroup tg3 = new TransformGroup();
+		final Transform3D transform4 = new Transform3D();
 		transform4.setTranslation(new Vector3d(p2));
 		tg3.setTransform(transform4);
 		tg3.addChild(sphere2);
 		v3d.add2DText(tg3);
-		
+
 	}
-	
+
 	public boolean isLine()
 	{
 		return true;
 	}
-	
+
 	public boolean isPoint()
 	{
 		return false;
 	}
-	
+
 	public boolean isPolygon()
 	{
 		return false;
 	}
-	
+
 	public boolean isText()
 	{
 		return false;
 	}
-	
+
 	/**
 	 * A class to calculate the length and transformations necessary to produce
 	 * a cylinder to connect two points. Useful for Java3D and VRML where a
 	 * cylinder object is created aligned along the y-axis.
-	 * 
+	 *
 	 * @author Alastair Hill
 	 */
 	class CylinderTransformer
 	{
-		
+
 		/** point A */
 		private final Point3d	pointA;
 		/** point B */
@@ -240,7 +240,7 @@ public class ElementLine extends Element3D
 		private double			angle;
 		/**
 		 * the axis around which to rotate the cylinder
-		 * 
+		 *
 		 */
 		private Vector3d		axis;
 		/**
@@ -250,119 +250,119 @@ public class ElementLine extends Element3D
 		private Vector3d		translation;
 		/**
 		 * The length of the cylinder required to join the two points
-		 * 
+		 *
 		 */
 		private double			length;
-		
+
 		/**
 		 * Creates a new instance of CylinderTransformer
-		 * 
+		 *
 		 * @param a
 		 *            point a
 		 * @param b
 		 *            point b
 		 */
-		CylinderTransformer(Point3d a, Point3d b)
+		CylinderTransformer(final Point3d a, final Point3d b)
 		{
 			pointA = a;
 			pointB = b;
-			
+
 			// carry out the calculations
 			doCalculations();
 		}
-		
+
 		/**
 		 * Carries out the necessary calculations so that values may be returned
 		 */
 		private void doCalculations()
 		{
 			length = pointA.distance(pointB);
-			
-			double[] arrayA = new double[3];
+
+			final double[] arrayA = new double[3];
 			pointA.get(arrayA);
-			double[] arrayB = new double[3];
+			final double[] arrayB = new double[3];
 			pointB.get(arrayB);
-			double[] arrayMid = new double[3];
-			
+			final double[] arrayMid = new double[3];
+
 			for (int i = 0; i < arrayA.length; i++)
 			{
 				arrayMid[i] = (arrayA[i] + arrayB[i]) / 2f;
 			}
-			
+
 			// the translation needed is
 			translation = new Vector3d(arrayMid);
-			
+
 			// the initial orientation of the bond is in the y axis
-			Vector3d init = new Vector3d(0.0f, 1.0f, 0.0f);
-			
+			final Vector3d init = new Vector3d(0.0f, 1.0f, 0.0f);
+
 			// the vector needed is the same as that from a to b
-			Vector3d needed = new Vector3d(pointB.x - pointA.x, pointB.y - pointA.y, pointB.z - pointA.z);
-			
+			final Vector3d needed = new Vector3d(pointB.x - pointA.x, pointB.y - pointA.y, pointB.z - pointA.z);
+
 			// so the angle to rotate the bond by is:
 			angle = needed.angle(init);
-			
+
 			// and the axis to rotate by is the cross product of the initial and
 			// needed vectors - ie the vector orthogonal to them both
 			axis = new Vector3d();
 			axis.cross(init, needed);
 		}
-		
+
 		/**
 		 * Returns the angle (in radians) through which to rotate the cylinder
-		 * 
+		 *
 		 * @return the angle.
 		 */
 		double getAngle()
 		{
 			return angle;
 		}
-		
+
 		/**
 		 * The axis around which the cylinder must be rotated
-		 * 
+		 *
 		 * @return the axis
 		 */
 		Vector3d getAxis()
 		{
 			return axis;
 		}
-		
+
 		/**
 		 * The length required for the cylinder to join the two points
-		 * 
+		 *
 		 * @return the length
 		 */
 		double getLength()
 		{
 			return length;
 		}
-		
+
 		/**
 		 * The translation required to move the cylinder to the midpoint of the
 		 * two points
-		 * 
+		 *
 		 * @return the translation
 		 */
 		Vector3d getTranslation()
 		{
 			return translation;
 		}
-		
+
 		/**
 		 * Generates a (pretty) string representation of the the
 		 * CylinderTransformer
-		 * 
+		 *
 		 * @return the string representation
 		 */
 		public String toString()
 		{
 			return "tr: " + translation + ", ax: " + axis + ", an: " + angle + ", le: " + length;
 		}
-		
+
 		/**
 		 * Generates the required axis and angle combined into an AxisAngle4f
 		 * object
-		 * 
+		 *
 		 * @return the axis and angle
 		 */
 		public AxisAngle4d getAxisAngle()
@@ -370,5 +370,5 @@ public class ElementLine extends Element3D
 			return new AxisAngle4d(axis.x, axis.y, axis.z, angle);
 		}
 	}
-	
+
 }
diff --git a/logo/src/xlogo/kernel/perspective/ElementPoint.java b/logo/src/xlogo/kernel/perspective/ElementPoint.java
index b89fcd8..670dee3 100644
--- a/logo/src/xlogo/kernel/perspective/ElementPoint.java
+++ b/logo/src/xlogo/kernel/perspective/ElementPoint.java
@@ -1,29 +1,29 @@
 /* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
  * Copyright (C) 2013 Marko Zivkovic
- * 
+ *
  * Contact Information: marko88zivkovic at gmail dot com
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of the GNU General Public License as published by the Free 
- * Software Foundation; either version 2 of the License, or (at your option) 
- * any later version.  This program is distributed in the hope that it will be 
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
- * Public License for more details.  You should have received a copy of the 
- * GNU General Public License along with this program; if not, write to the Free 
- * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.  You should have received a copy of the
+ * GNU General Public License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
- * 
- * 
+ *
+ *
  * This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
  * during his Bachelor thesis at the computer science department of ETH Zurich,
  * in the year 2013 and/or during future work.
- * 
+ *
  * It is a reengineered version of XLogo written by Loic Le Coq, published
  * under the GPL License at http://xlogo.tuxfamily.org/
- * 
+ *
  * Contents of this file were initially written by Loic Le Coq,
- * modifications, extensions, refactorings might have been applied by Marko Zivkovic 
+ * modifications, extensions, refactorings might have been applied by Marko Zivkovic
  */
 
 package xlogo.kernel.perspective;
@@ -50,22 +50,22 @@ import com.sun.j3d.utils.geometry.Sphere;
 public class ElementPoint extends Element3D
 {
 	float	pointWidth;
-	
-	public ElementPoint(Viewer3D v3d, float pointWidth)
+
+	public ElementPoint(final Viewer3D v3d, final float pointWidth)
 	{
 		super(v3d);
 		this.pointWidth = pointWidth; //app.getKernel().getActiveTurtle().getPenWidth();
 	}
-	
+
 	public void addToScene() throws LogoError
 	{
 		if (vertex.size() == 0)
 			return;
 		if (pointWidth == 0.5)
 		{
-			int[] tab = new int[1];
+			final int[] tab = new int[1];
 			tab[0] = vertex.size();
-			PointArray point = new PointArray(vertex.size(), PointArray.COORDINATES | PointArray.COLOR_3);
+			final PointArray point = new PointArray(vertex.size(), GeometryArray.COORDINATES | GeometryArray.COLOR_3);
 			for (int i = 0; i < vertex.size(); i++)
 			{
 				point.setCoordinate(i, vertex.get(i));
@@ -79,51 +79,51 @@ public class ElementPoint extends Element3D
 			{
 				createBigPoint(vertex.get(i), new Color3f(color.get(i)));
 			}
-			
+
 		}
 	}
-	
-	private void createBigPoint(Point3d p, Color3f color)
+
+	private void createBigPoint(final Point3d p, final Color3f color)
 	{
 		// Add a Sphere to main 3D scene.
-		Appearance appear = new Appearance();
-		Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), color,// new
+		final Appearance appear = new Appearance();
+		final Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), color,// new
 																			// Color3f(0.0f,0f,0f),
 				new Color3f(1f, 1.0f, 1.0f), new Color3f(1f, 1f, 1f), 64);
 		appear.setMaterial(mat);
-		PolygonAttributes pa = new PolygonAttributes();
+		final PolygonAttributes pa = new PolygonAttributes();
 		pa.setCullFace(PolygonAttributes.CULL_NONE);
 		pa.setBackFaceNormalFlip(true);
 		appear.setPolygonAttributes(pa);
-		
-		Sphere sphere = new Sphere(pointWidth / 1000, appear);
-		
-		TransformGroup tg = new TransformGroup();
-		Transform3D transform = new Transform3D();
+
+		final Sphere sphere = new Sphere(pointWidth / 1000, appear);
+
+		final TransformGroup tg = new TransformGroup();
+		final Transform3D transform = new Transform3D();
 		transform.setTranslation(new Vector3d(p));
 		tg.setTransform(transform);
 		tg.addChild(sphere);
 		v3d.add2DText(tg);
 	}
-	
+
 	public boolean isLine()
 	{
 		return false;
 	}
-	
+
 	public boolean isPoint()
 	{
 		return true;
 	}
-	
+
 	public boolean isPolygon()
 	{
 		return false;
 	}
-	
+
 	public boolean isText()
 	{
 		return false;
 	}
-	
+
 }
diff --git a/logo/src/xlogo/kernel/perspective/ElementPolygon.java b/logo/src/xlogo/kernel/perspective/ElementPolygon.java
index 8ae2168..71ba5c3 100644
--- a/logo/src/xlogo/kernel/perspective/ElementPolygon.java
+++ b/logo/src/xlogo/kernel/perspective/ElementPolygon.java
@@ -1,36 +1,36 @@
 /* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
  * Copyright (C) 2013 Marko Zivkovic
- * 
+ *
  * Contact Information: marko88zivkovic at gmail dot com
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of the GNU General Public License as published by the Free 
- * Software Foundation; either version 2 of the License, or (at your option) 
- * any later version.  This program is distributed in the hope that it will be 
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
- * Public License for more details.  You should have received a copy of the 
- * GNU General Public License along with this program; if not, write to the Free 
- * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.  You should have received a copy of the
+ * GNU General Public License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
- * 
- * 
+ *
+ *
  * This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
  * during his Bachelor thesis at the computer science department of ETH Zurich,
  * in the year 2013 and/or during future work.
- * 
+ *
  * It is a reengineered version of XLogo written by Loic Le Coq, published
  * under the GPL License at http://xlogo.tuxfamily.org/
- * 
+ *
  * Contents of this file were initially written by Loic Le Coq,
- * modifications, extensions, refactorings might have been applied by Marko Zivkovic 
+ * modifications, extensions, refactorings might have been applied by Marko Zivkovic
  */
 
 /**
  * Title : XLogo
  * Description : XLogo is an interpreter for the Logo
  * programming language
- * 
+ *
  * @author Loïc Le Coq
  */
 package xlogo.kernel.perspective;
@@ -49,33 +49,33 @@ import xlogo.kernel.LogoError;
 
 /**
  * This class represent A polygon surface in 3D mode
- * 
+ *
  * @author loic
- * 
+ *
  * @author Marko Zivkovic - I decoupled this from Application
  */
 public class ElementPolygon extends Element3D
 {
-	public ElementPolygon(Viewer3D v3d)
+	public ElementPolygon(final Viewer3D v3d)
 	{
 		super(v3d);
 	}
-	
+
 	/**
 	 * This method calculates all attributes for polygon and add it to the
 	 * Polygon's list
 	 */
 	public void addToScene() throws LogoError
 	{
-		
+
 		if (vertex.size() < 3)
 			throw new LogoError(Logo.messages.getString("error.3d.3vertex"));
-		
+
 		// Create normal vector
-		
-		Point3d origine = vertex.get(0);
+
+		final Point3d origine = vertex.get(0);
 		// System.out.println(" origine "+origine.x+" "+origine.y+" "+origine.z);
-		
+
 		Point3d point1;
 		Vector3f vec1 = null;
 		Vector3f vec2 = null;
@@ -117,61 +117,61 @@ public class ElementPolygon extends Element3D
 			if (null == vec2)
 				throw new LogoError(Logo.messages.getString("error.3d.emptypolygon"));
 		}
-		
+
 		// Create Geometry
-		
-		int[] tab = new int[1];
+
+		final int[] tab = new int[1];
 		tab[0] = vertex.size();
-		TriangleFanArray tfa = new TriangleFanArray(vertex.size(), TriangleFanArray.COORDINATES
-				| TriangleFanArray.COLOR_3 | TriangleFanArray.NORMALS, tab);
+		final TriangleFanArray tfa = new TriangleFanArray(vertex.size(), GeometryArray.COORDINATES
+				| GeometryArray.COLOR_3 | GeometryArray.NORMALS, tab);
 		// TriangleFanArray tfa2=new
 		// TriangleFanArray(vertex.size(),TriangleFanArray.COORDINATES|TriangleFanArray.COLOR_3|TriangleFanArray.NORMALS,tab);
 		for (int i = 0; i < vertex.size(); i++)
 		{
-			
+
 			tfa.setCoordinate(i, vertex.get(i));
 			// tfa2.setCoordinate(i, vertex.get(vertex.size()-1-i));
 			
 			tfa.setColor(i, new Color3f(color.get(i)));
 			// tfa2.setColor(i, new Color3f(color.get(color.size()-i-1)));
-			
+
 			tfa.setNormal(i, vec2);
 			// tfa2.setNormal(i, vec1);
-			
+
 		}
-		
-		Shape3D s = new Shape3D(tfa);
-		Appearance appear = new Appearance();
-		Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), new Color3f(0.0f, 0f, 0f), new Color3f(1f, 1.0f,
+
+		final Shape3D s = new Shape3D(tfa);
+		final Appearance appear = new Appearance();
+		final Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), new Color3f(0.0f, 0f, 0f), new Color3f(1f, 1.0f,
 				1.0f), new Color3f(1f, 1f, 1f), 64);
 		appear.setMaterial(mat);
-		PolygonAttributes pa = new PolygonAttributes();
+		final PolygonAttributes pa = new PolygonAttributes();
 		pa.setCullFace(PolygonAttributes.CULL_NONE);
 		pa.setBackFaceNormalFlip(true);
 		appear.setPolygonAttributes(pa);
-		
+
 		s.setAppearance(appear);
 		v3d.add3DObject(s);
 		// DrawPanel.listPoly.add(s);
 		// DrawPanel.listPoly.add(new Shape3D(tfa2));
 		// System.out.println(DrawPanel.listPoly.size()+" "+vertex.get(i).x+" "+vertex.get(i).y+" "+vertex.get(i).z);
 	}
-	
+
 	public boolean isPoint()
 	{
 		return false;
 	}
-	
+
 	public boolean isPolygon()
 	{
 		return true;
 	}
-	
+
 	public boolean isLine()
 	{
 		return false;
 	}
-	
+
 	public boolean isText()
 	{
 		return false;
diff --git a/logo/src/xlogo/kernel/perspective/LightDialog.java b/logo/src/xlogo/kernel/perspective/LightDialog.java
index 3638213..bd54658 100644
--- a/logo/src/xlogo/kernel/perspective/LightDialog.java
+++ b/logo/src/xlogo/kernel/perspective/LightDialog.java
@@ -1,29 +1,29 @@
 /* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
  * Copyright (C) 2013 Marko Zivkovic
- * 
+ *
  * Contact Information: marko88zivkovic at gmail dot com
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of the GNU General Public License as published by the Free 
- * Software Foundation; either version 2 of the License, or (at your option) 
- * any later version.  This program is distributed in the hope that it will be 
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
- * Public License for more details.  You should have received a copy of the 
- * GNU General Public License along with this program; if not, write to the Free 
- * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.  You should have received a copy of the
+ * GNU General Public License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
- * 
- * 
+ *
+ *
  * This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
  * during his Bachelor thesis at the computer science department of ETH Zurich,
  * in the year 2013 and/or during future work.
- * 
+ *
  * It is a reengineered version of XLogo written by Loic Le Coq, published
  * under the GPL License at http://xlogo.tuxfamily.org/
- * 
+ *
  * Contents of this file were initially written by Loic Le Coq,
- * modifications, extensions, refactorings might have been applied by Marko Zivkovic 
+ * modifications, extensions, refactorings might have been applied by Marko Zivkovic
  */
 
 package xlogo.kernel.perspective;
@@ -40,6 +40,7 @@ import javax.vecmath.Color3f;
 import javax.vecmath.Tuple3f;
 import javax.vecmath.Point3f;
 import javax.vecmath.Vector3f;
+import org.jogamp.vecmath.Vector3f;
 import javax.swing.BorderFactory;
 import javax.swing.JDialog;
 import javax.swing.JComboBox;
@@ -57,38 +58,38 @@ import xlogo.storage.WSManager;
 public class LightDialog extends JDialog implements ActionListener
 {
 	private static final long	serialVersionUID	= 1L;
-	private String[]			type				= { Logo.messages.getString("3d.light.none"),
+	private final String[]			type				= { Logo.messages.getString("3d.light.none"),
 			Logo.messages.getString("3d.light.ambient"), Logo.messages.getString("3d.light.directional"),
 			Logo.messages.getString("3d.light.point"), Logo.messages.getString("3d.light.spot") };
-	
+
 	private JComboBox			comboType;
-	
+
 	PanelColor					panelColor;
-	
+
 	private PanelPosition		panelPosition;
-	
+
 	private PanelPosition		panelDirection;
-	
+
 	private PanelAngle			panelAngle;
-	
+
 	private JLabel				labelType;
-	
+
 	private JButton				ok;
-	
+
 	private JButton				refresh;
-	
-	private Viewer3D			viewer3d;
-	
-	private MyLight				light;
-	
-	LightDialog(Viewer3D viewer3d, MyLight light, String title)
+
+	private final Viewer3D			viewer3d;
+
+	private final MyLight				light;
+
+	LightDialog(final Viewer3D viewer3d, final MyLight light, final String title)
 	{
 		super(viewer3d, title, true);
 		this.viewer3d = viewer3d;
 		this.light = light;
 		initGui();
 	}
-	
+
 	private void initGui()
 	{
 		getContentPane().setLayout(new GridBagLayout());
@@ -103,27 +104,27 @@ public class LightDialog extends JDialog implements ActionListener
 		else
 			panelColor = new PanelColor(Color.white);
 		panelColor.setBackground(comboType.getBackground());
-		
+
 		panelPosition = new PanelPosition(Logo.messages.getString("3d.light.position"), light.getPosition());
 		panelDirection = new PanelPosition(Logo.messages.getString("3d.light.direction"), light.getDirection());
 		panelAngle = new PanelAngle(light.getAngle());
 		ok = new JButton(Logo.messages.getString("pref.ok"));
 		refresh = new JButton(Logo.messages.getString("3d.light.apply"));
-		
-		Font font = WSManager.getWorkspaceConfig().getFont();
-		
+
+		final Font font = WSManager.getWorkspaceConfig().getFont();
+
 		labelType.setFont(font);
 		comboType.setFont(font);
 		ok.setFont(font);
 		refresh.setFont(font);
-		
+
 		comboType.addActionListener(this);
 		comboType.setActionCommand("combo");
 		ok.addActionListener(this);
 		ok.setActionCommand("ok");
 		refresh.addActionListener(this);
 		refresh.setActionCommand("refresh");
-		
+
 		getContentPane().add(
 				labelType,
 				new GridBagConstraints(0, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.NONE,
@@ -158,12 +159,12 @@ public class LightDialog extends JDialog implements ActionListener
 						new Insets(0, 0, 0, 0), 0, 0));
 		selectComponents();
 		setVisible(true);
-		
+
 	}
-	
-	public void actionPerformed(ActionEvent e)
+
+	public void actionPerformed(final ActionEvent e)
 	{
-		String cmd = e.getActionCommand();
+		final String cmd = e.getActionCommand();
 		// The selected item in the combo Box has changed
 		if (cmd.equals("combo"))
 			selectComponents();
@@ -179,7 +180,7 @@ public class LightDialog extends JDialog implements ActionListener
 			updateLight();
 		}
 	}
-	
+
 	private void updateLight()
 	{
 		int t = comboType.getSelectedIndex();
@@ -197,12 +198,12 @@ public class LightDialog extends JDialog implements ActionListener
 		light.createLight();
 		// System.out.println(c+" "+" "+p+" "+d);
 		viewer3d.addNode(light);
-		
+
 	}
-	
+
 	private void selectComponents()
 	{
-		int id = comboType.getSelectedIndex();
+		final int id = comboType.getSelectedIndex();
 		// None
 		if (id == MyLight.LIGHT_OFF)
 		{
@@ -244,21 +245,21 @@ public class LightDialog extends JDialog implements ActionListener
 			panelAngle.setEnabled(true);
 		}
 	}
-	
+
 	class PanelAngle extends JPanel
 	{
 		private static final long	serialVersionUID	= 1L;
 		private JLabel				label;
 		private JTextField			angle;
-		private float				angleValue;
-		
-		PanelAngle(float angleValue)
+		private final float				angleValue;
+
+		PanelAngle(final float angleValue)
 		{
 			this.angleValue = angleValue;
-			
+
 			initGui();
 		}
-		
+
 		private void initGui()
 		{
 			label = new JLabel(Logo.messages.getString("3d.light.angle"));
@@ -268,14 +269,14 @@ public class LightDialog extends JDialog implements ActionListener
 			add(label);
 			add(angle);
 		}
-		
-		public void setEnabled(boolean b)
+
+		public void setEnabled(final boolean b)
 		{
 			super.setEnabled(b);
 			label.setEnabled(b);
 			angle.setEnabled(b);
 		}
-		
+
 		/**
 		 * @return
 		 * @uml.property name="angleValue"
@@ -284,36 +285,36 @@ public class LightDialog extends JDialog implements ActionListener
 		{
 			try
 			{
-				float f = Float.parseFloat(angle.getText());
+				final float f = Float.parseFloat(angle.getText());
 				return f;
 			}
-			catch (NumberFormatException e)
+			catch (final NumberFormatException e)
 			{}
 			return MyLight.DEFAULT_ANGLE;
 		}
 	}
-	
+
 	class PanelPosition extends JPanel
 	{
 		private static final long	serialVersionUID	= 1L;
-		private String				title;
+		private final String				title;
 		private JTextField			Xpos;
 		private JTextField			Ypos;
 		private JTextField			Zpos;
 		private JLabel				sep1;
 		private JLabel				sep2;
 		Tuple3f						tuple;
-		
-		PanelPosition(String title, Tuple3f tuple)
+
+		PanelPosition(final String title, final Tuple3f tuple)
 		{
 			this.title = title;
 			this.tuple = tuple;
 			initGui();
 		}
-		
+
 		private void initGui()
 		{
-			TitledBorder tb = BorderFactory.createTitledBorder(title);
+			final TitledBorder tb = BorderFactory.createTitledBorder(title);
 			tb.setTitleFont(WSManager.getWorkspaceConfig().getFont());
 			setBorder(tb);
 			sep1 = new JLabel("x");
@@ -333,37 +334,37 @@ public class LightDialog extends JDialog implements ActionListener
 			add(sep2);
 			add(Zpos);
 		}
-		
+
 		Point3f getPosition()
 		{
 			try
 			{
-				float x = Float.parseFloat(Xpos.getText());
-				float y = Float.parseFloat(Ypos.getText());
-				float z = Float.parseFloat(Zpos.getText());
+				final float x = Float.parseFloat(Xpos.getText());
+				final float y = Float.parseFloat(Ypos.getText());
+				final float z = Float.parseFloat(Zpos.getText());
 				return new Point3f(x / 1000, y / 1000, z / 1000);
 			}
-			catch (NumberFormatException e)
+			catch (final NumberFormatException e)
 			{}
 			return (new Point3f(0, 0, 0));
 		}
-		
+
 		Vector3f getDirection()
 		{
 			try
 			{
-				float x = Float.parseFloat(Xpos.getText());
-				float y = Float.parseFloat(Ypos.getText());
-				float z = Float.parseFloat(Zpos.getText());
+				final float x = Float.parseFloat(Xpos.getText());
+				final float y = Float.parseFloat(Ypos.getText());
+				final float z = Float.parseFloat(Zpos.getText());
 				return new Vector3f(x / 1000, y / 1000, z / 1000);
 			}
-			catch (NumberFormatException e)
+			catch (final NumberFormatException e)
 			{}
 			return (new Vector3f(0, 0, 0));
-			
+
 		}
-		
-		public void setEnabled(boolean b)
+
+		public void setEnabled(final boolean b)
 		{
 			super.setEnabled(b);
 			sep1.setEnabled(b);
@@ -372,7 +373,7 @@ public class LightDialog extends JDialog implements ActionListener
 			Ypos.setEnabled(b);
 			Zpos.setEnabled(b);
 		}
-		
+
 	}
-	
+
 }
diff --git a/logo/src/xlogo/kernel/perspective/Viewer3D.java b/logo/src/xlogo/kernel/perspective/Viewer3D.java
index 0b7a312..2ade695 100644
--- a/logo/src/xlogo/kernel/perspective/Viewer3D.java
+++ b/logo/src/xlogo/kernel/perspective/Viewer3D.java
@@ -1,29 +1,29 @@
 /* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
  * Copyright (C) 2013 Marko Zivkovic
- * 
+ *
  * Contact Information: marko88zivkovic at gmail dot com
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of the GNU General Public License as published by the Free 
- * Software Foundation; either version 2 of the License, or (at your option) 
- * any later version.  This program is distributed in the hope that it will be 
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
- * Public License for more details.  You should have received a copy of the 
- * GNU General Public License along with this program; if not, write to the Free 
- * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.  You should have received a copy of the
+ * GNU General Public License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
- * 
- * 
+ *
+ *
  * This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
  * during his Bachelor thesis at the computer science department of ETH Zurich,
  * in the year 2013 and/or during future work.
- * 
+ *
  * It is a reengineered version of XLogo written by Loic Le Coq, published
  * under the GPL License at http://xlogo.tuxfamily.org/
- * 
+ *
  * Contents of this file were initially written by Loic Le Coq,
- * modifications, extensions, refactorings might have been applied by Marko Zivkovic 
+ * modifications, extensions, refactorings might have been applied by Marko Zivkovic
  */
 
 package xlogo.kernel.perspective;
@@ -80,9 +80,9 @@ import java.awt.event.ActionEvent;
 
 /**
  * This Frame displays the 3D main Scene
- * 
+ *
  * BG scene
- * 
+ *
  * BG backBranchGroup | BG Mylight (4) | BG
  * Background Light 1,2,3,4 Other objects
  */
@@ -95,13 +95,13 @@ public class Viewer3D extends JFrame implements ActionListener
 	private final static String	ACTION_LIGHT2		= "light2";
 	private final static String	ACTION_LIGHT3		= "light3";
 	private final static String	ACTION_FOG			= "fog";
-	
+
 	// To store the Light attributes
 	private MyLight[]			myLights;
 	// To store the Fog attributes
 	private MyFog				myFog;
 	// Gui Components
-	private ImageIcon			iscreenshot			= Utils.dimensionne_image("screenshot.png", this);
+	private final ImageIcon			iscreenshot			= Utils.dimensionne_image("screenshot.png", this);
 	private JButton				screenshot;
 	private static final long	serialVersionUID	= 1L;
 	private World3D				w3d;
@@ -117,33 +117,33 @@ public class Viewer3D extends JFrame implements ActionListener
 	private Background			back;
 	private PanelLight			panelLight;
 	private PanelFog			panelFog;
-	
-	public Viewer3D(World3D w3d, Color c)
+
+	public Viewer3D(final World3D w3d, final Color c)
 	{
 		this.w3d = w3d;
 		this.backgroundColor = new Color3f(c);
 		initGui();
 	}
-	
-	public void actionPerformed(ActionEvent e)
+
+	public void actionPerformed(final ActionEvent e)
 	{
-		String cmd = e.getActionCommand();
+		final String cmd = e.getActionCommand();
 		// Take a screenshot
 		if (cmd.equals(Viewer3D.ACTION_SCREENSHOT))
 		{
-			WriteImage wi = new WriteImage(this, null);
-			int id = wi.chooseFile();
+			final WriteImage wi = new WriteImage(this, null);
+			final int id = wi.chooseFile();
 			if (id == JFileChooser.APPROVE_OPTION)
 			{
-				GraphicsContext3D ctx = canvas3D.getGraphicsContext3D();
-				java.awt.Dimension scrDim = canvas3D.getSize();
-				
+				final GraphicsContext3D ctx = canvas3D.getGraphicsContext3D();
+				final java.awt.Dimension scrDim = canvas3D.getSize();
+
 				// setting raster component
-				Raster ras = new Raster(new Point3f(-1.0f, -1.0f, -1.0f), Raster.RASTER_COLOR, 0, 0, scrDim.width,
+				final Raster ras = new Raster(new Point3f(-1.0f, -1.0f, -1.0f), Raster.RASTER_COLOR, 0, 0, scrDim.width,
 						scrDim.height, new ImageComponent2D(ImageComponent.FORMAT_RGB, new BufferedImage(scrDim.width,
 								scrDim.height, java.awt.image.BufferedImage.TYPE_INT_RGB)), null);
 				ctx.readRaster(ras);
-				BufferedImage img = ras.getImage().getImage();
+				final BufferedImage img = ras.getImage().getImage();
 				wi.setImage(img);
 				wi.start();
 			}
@@ -172,83 +172,83 @@ public class Viewer3D extends JFrame implements ActionListener
 		else if (cmd.equals(Viewer3D.ACTION_FOG))
 		{
 			new FogDialog(this, myFog, Logo.messages.getString("3d.fog"));
-			
+
 		}
 	}
-	
+
 	public void setText()
 	{
 		setTitle(Logo.messages.getString("3d.viewer"));
 		panelFog.setText();
 		panelLight.setText();
-		
+
 	}
-	
+
 	private void initGui()
 	{
-		this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+		this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
 		setIconImage(Toolkit.getDefaultToolkit().createImage(Utils.class.getResource("icone.png")));
-		
+
 		// Creation d'un composant de classe Canvas3D permettant de visualiser
 		// une scène 3D
 		canvas3D = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
 		// Création d'un univers 3D rattaché au composant 3D
 		universe = new SimpleUniverse(canvas3D);
-		
+
 		// Install the camera at the valid position with correct orientation
-		TransformGroup tg = universe.getViewingPlatform().getViewPlatformTransform();
-		Transform3D trans = new Transform3D();
+		final TransformGroup tg = universe.getViewingPlatform().getViewPlatformTransform();
+		final Transform3D trans = new Transform3D();
 		if (null == w3d)
 		{
 			w3d = new World3D();
 		}
 		trans.setTranslation(new Vector3d(-w3d.xCamera / 1000, -w3d.yCamera / 1000, -w3d.zCamera / 1000));
-		Transform3D rot = new Transform3D();
+		final Transform3D rot = new Transform3D();
 		rot.lookAt(new Point3d(-w3d.xCamera / 1000, -w3d.yCamera / 1000, -w3d.zCamera / 1000), new Point3d(0, 0, 0),
 				new Vector3d(0, 1, 0));
 		rot.invert();
 		trans.mul(rot);
 		tg.setTransform(trans);
-		OrbitBehavior ob = new OrbitBehavior(canvas3D, OrbitBehavior.REVERSE_ALL);
+		final OrbitBehavior ob = new OrbitBehavior(canvas3D, OrbitBehavior.REVERSE_ALL);
 		ob.setRotationCenter(new Point3d(0, 0, 0));
 		ob.setSchedulingBounds(new BoundingSphere(new Point3d(0, 0, 0), 2 * w3d.r / 1000));
 		universe.getViewingPlatform().setViewPlatformBehavior(ob);
-		
+
 		// Create the root of the branch graph
 		scene = new BranchGroup();
 		branchManager = new BranchManager();
 		// scene.setName("Main Branch");
 		// We can add New BranchGroup dynamically in the main scene
-		scene.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
+		scene.setCapability(Group.ALLOW_CHILDREN_EXTEND);
 		// We can remove BranchGroup dynamically in the main scene
-		scene.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
-		
+		scene.setCapability(Group.ALLOW_CHILDREN_WRITE);
+
 		// Configure and create background
 		createBackground();
-		
+
 		// Configure Lights
 		initLights();
-		
+
 		// Configure Fog
 		myFog = new MyFog(MyFog.FOG_OFF, backgroundColor);
 		scene.addChild(myFog);
-		
+
 		// Rattachement de la scène 3D à l'univers
 		universe.addBranchGraph(scene);
-		
-		Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
-		int width = d.width * 9 / 10;
-		int height = d.height * 9 / 10;
+
+		final Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
+		final int width = d.width * 9 / 10;
+		final int height = d.height * 9 / 10;
 		setSize(width, height);
 		getContentPane().setLayout(new GridBagLayout());
 		screenshot = new JButton(iscreenshot);
 		screenshot.addActionListener(this);
 		screenshot.setMaximumSize(new Dimension(100, 100));
 		screenshot.setActionCommand(Viewer3D.ACTION_SCREENSHOT);
-		
+
 		panelLight = new PanelLight(this);
 		panelFog = new PanelFog(this);
-		
+
 		getContentPane().add(
 				canvas3D,
 				new GridBagConstraints(0, 0, 1, 3, 2.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH,
@@ -268,29 +268,29 @@ public class Viewer3D extends JFrame implements ActionListener
 		setText();
 		getContentPane().validate();
 	}
-	
+
 	/**
 	 * This method adds a shape3D to the main scene
-	 * 
+	 *
 	 * @param s
 	 *            The Shape to add
 	 */
-	public void add3DObject(Shape3D s)
+	public void add3DObject(final Shape3D s)
 	{
 		branchManager.add3DObject(s);
 	}
-	
-	public void add2DText(TransformGroup tg)
+
+	public void add2DText(final TransformGroup tg)
 	{
 		branchManager.add2DText(tg);
 	}
-	
+
 	public void insertBranch()
 	{
 		branchManager.insertBranch();
 		branchManager = new BranchManager();
 	}
-	
+
 	/**
 	 * This methods adds two default PointLight int the 3d Scene
 	 */
@@ -298,14 +298,14 @@ public class Viewer3D extends JFrame implements ActionListener
 	{
 		myLights = new MyLight[4];
 		// First Default Point Light
-		Color3f color = new Color3f(1f, 1f, 1f);
+		final Color3f color = new Color3f(1f, 1f, 1f);
 		Point3f pos = new Point3f((float) w3d.xCamera / 1000, (float) w3d.yCamera / 1000, (float) w3d.zCamera / 1000);
 		myLights[0] = new MyLight(MyLight.LIGHT_POINT, color, pos);
-		
+
 		// Second default Point Light
 		pos = new Point3f(-(float) w3d.xCamera / 1000, -(float) w3d.yCamera / 1000, -(float) w3d.zCamera / 1000);
 		myLights[1] = new MyLight(MyLight.LIGHT_POINT, color, pos);
-		
+
 		myLights[2] = new MyLight(MyLight.LIGHT_OFF);
 		myLights[3] = new MyLight(MyLight.LIGHT_OFF);
 		for (int i = 0; i < 4; i++)
@@ -314,26 +314,26 @@ public class Viewer3D extends JFrame implements ActionListener
 		}
 		addAllLights(scene);
 	}
-	
+
 	/**
 	 * Add all lights in the main 3D scene
 	 */
-	private void addAllLights(BranchGroup bg)
+	private void addAllLights(final BranchGroup bg)
 	{
 		for (int i = 0; i < 4; i++)
 		{
 			bg.addChild(myLights[i]);
 		}
 	}
-	
+
 	/**
 	 * add a light in the main scene
 	 */
-	protected void addNode(Node l)
+	protected void addNode(final Node l)
 	{
 		scene.addChild(l);
 	}
-	
+
 	/**
 	 * This methods erase all drawings on the 3D Viewer Drawing Area
 	 */
@@ -365,16 +365,16 @@ public class Viewer3D extends JFrame implements ActionListener
 		 * }
 		 * }
 		 */
-		
+
 	}
-	
-	public void updateBackGround(Color c)
+
+	public void updateBackGround(final Color c)
 	{
-		backgroundColor = new Color3f(c);
+		backgroundColor = new Color3f(c.getRGBColorComponents(null));
 		backBranchgroup.detach();
 		createBackground();
 	}
-	
+
 	/**
 	 * This method creates the Background with the defined color
 	 */
@@ -382,67 +382,67 @@ public class Viewer3D extends JFrame implements ActionListener
 	{
 		backBranchgroup = new BranchGroup();
 		backBranchgroup.setCapability(BranchGroup.ALLOW_DETACH);
-		backBranchgroup.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
-		
+		backBranchgroup.setCapability(Group.ALLOW_CHILDREN_WRITE);
+
 		back = new Background(backgroundColor);
 		back.setApplicationBounds(new BoundingSphere());
 		back.setCapability(Background.ALLOW_COLOR_WRITE);
 		backBranchgroup.addChild(back);
 		scene.addChild(backBranchgroup);
 	}
-	
+
 	class BranchManager
 	{
 		BranchGroup	bg;
-		
+
 		BranchManager()
 		{
 			bg = new BranchGroup();
 			bg.setCapability(BranchGroup.ALLOW_DETACH);
 		}
-		
+
 		/**
 		 * This method adds a shape3D to the main scene
-		 * 
+		 *
 		 * @param s
 		 *            The Shape to add
 		 */
-		void add3DObject(Shape3D s)
+		void add3DObject(final Shape3D s)
 		{
 			bg.addChild(s);
 		}
-		
-		void add2DText(TransformGroup tg)
+
+		void add2DText(final TransformGroup tg)
 		{
 			bg.addChild(tg);
 		}
-		
+
 		void insertBranch()
 		{
 			bg.compile();
 			scene.addChild(bg);
 		}
 	}
-	
+
 	class PanelLight extends JPanel
 	{
 		private static final long	serialVersionUID	= 1L;
 		private JButton[]			buttonLights;
-		private Viewer3D			viewer3d;
-		
-		PanelLight(Viewer3D viewer3d)
+		private final Viewer3D			viewer3d;
+
+		PanelLight(final Viewer3D viewer3d)
 		{
 			this.viewer3d = viewer3d;
 			initGui();
 		}
-		
+
 		private void initGui()
 		{
 			buttonLights = new JButton[4];
 			setLayout(new GridLayout(2, 2, 10, 10));
 			for (int i = 0; i < 4; i++)
 			{
-				ImageIcon ilight = Utils.dimensionne_image("light" + i + ".png", viewer3d);
+				final ImageIcon ilight = Utils.dimensionne_image("light" + i + ".png", viewer3d);
 				buttonLights[i] = new JButton(ilight);
 				add(buttonLights[i]);
 				buttonLights[i].addActionListener(viewer3d);
@@ -450,44 +450,44 @@ public class Viewer3D extends JFrame implements ActionListener
 			}
 			setText();
 		}
-		
+
 		void setText()
 		{
-			TitledBorder tb = BorderFactory.createTitledBorder(Logo.messages.getString("3d.light"));
+			final TitledBorder tb = BorderFactory.createTitledBorder(Logo.messages.getString("3d.light"));
 			tb.setTitleFont(WSManager.getWorkspaceConfig().getFont());
 			setBorder(tb);
 		}
 	}
-	
+
 	class PanelFog extends JPanel
 	{
-		
+
 		private static final long	serialVersionUID	= 1L;
 		private JButton				buttonFog;
-		private Viewer3D			viewer3d;
-		
-		PanelFog(Viewer3D viewer3d)
+		private final Viewer3D			viewer3d;
+
+		PanelFog(final Viewer3D viewer3d)
 		{
 			this.viewer3d = viewer3d;
 			initGui();
 		}
-		
+
 		private void initGui()
 		{
-			ImageIcon ifog =Utils.dimensionne_image("fog.png", viewer3d);
+			final ImageIcon ifog =Utils.dimensionne_image("fog.png", viewer3d);
 			buttonFog = new JButton(ifog);
 			buttonFog.setActionCommand(Viewer3D.ACTION_FOG);
 			buttonFog.addActionListener(viewer3d);
 			add(buttonFog);
 			setText();
 		}
-		
+
 		void setText()
 		{
-			TitledBorder tb = BorderFactory.createTitledBorder(Logo.messages.getString("3d.fog"));
+			final TitledBorder tb = BorderFactory.createTitledBorder(Logo.messages.getString("3d.fog"));
 			tb.setTitleFont(WSManager.getWorkspaceConfig().getFont());
 			setBorder(tb);
 		}
 	}
-	
+
 }