Initial creation of j3d-examples sources in CVS repository

11 files changed, 2068 insertions, 0 deletions

diff --git a/src/GearTest/Gear.java b/src/GearTest/Gear.java
new file mode 100644
index 0000000..fbd0f03
--- /dev/null
+++ b/src/GearTest/Gear.java
@@ -0,0 +1,397 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.lang.Math.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class Gear extends javax.media.j3d.TransformGroup {
+    
+    // Specifiers determining whether to generate outward facing normals or
+    // inward facing normals.
+    static final int OutwardNormals = 1;
+    static final int InwardNormals = -1;
+
+    // The number of teeth in the gear
+    int toothCount;
+
+    // Gear start differential angle. All gears are constructed with the
+    // center of a tooth at Z-axis angle = 0.
+    double gearStartAngle;
+    // The Z-rotation angle to place the tooth center at theta = 0
+    float toothTopCenterAngle;
+    // The Z-rotation angle to place the valley center at theta = 0
+    float valleyCenterAngle;
+    // The angle about Z subtended by one tooth and its associated valley
+    float circularPitchAngle;
+    
+    // Increment angles
+    float toothValleyAngleIncrement;
+
+    // Front and rear facing normals for the gear's body
+    final Vector3f frontNormal = new Vector3f(0.0f, 0.0f, -1.0f);
+    final Vector3f rearNormal = new Vector3f(0.0f, 0.0f, 1.0f);
+
+
+    Gear(int toothCount) {
+	this.toothCount = toothCount;
+    }
+
+    void addBodyDisks(float shaftRadius, float bodyOuterRadius,
+		      float thickness, Appearance look) {
+	int gearBodySegmentVertexCount;		// #(segments) per tooth-unit
+	int gearBodyTotalVertexCount;		// #(vertices) in a gear face
+	int gearBodyStripCount[] = new int[1];	// per strip (1) vertex count
+
+	// A ray from the gear center, used in normal calculations
+	float xDirection, yDirection;
+
+	// The x and y coordinates at each point of a facet and at each
+	// point on the gear: at the shaft, the root of the teeth, and
+	// the outer point of the teeth
+	float xRoot0, yRoot0, xShaft0, yShaft0;
+	float xRoot3, yRoot3, xShaft3, yShaft3;
+	float xRoot4, yRoot4, xShaft4, yShaft4;
+
+	// Temporary variables for storing coordinates and vectors 
+	Point3f coordinate = new Point3f(0.0f, 0.0f, 0.0f);
+
+	// Gear start differential angle. All gears are constructed with the
+	// center of a tooth at Z-axis angle = 0.
+	double gearStartAngle = -1.0 * toothTopCenterAngle;
+
+	// Temporaries that store start angle for each portion of tooth facet
+	double toothStartAngle, toothTopStartAngle,
+	    toothDeclineStartAngle, toothValleyStartAngle,
+	    nextToothStartAngle;
+
+	Shape3D newShape;
+	int index;
+
+	// The z coordinates for the body disks
+	final float frontZ = -0.5f * thickness;
+	final float rearZ = 0.5f * thickness;
+
+	/* Construct the gear's front body (front facing torus disk)
+	 *                   __2__
+	 *                -    |    -  4
+	 *             -       /|     /-
+	 *           /        / |    /| \
+	 *          0\       /  |   / /  >
+	 *            \     /   |  /  |   >
+	 *             \   /    | /  /     |
+	 *              \ / ____|/   |      >
+	 *               \--    --__/       | 
+	 *                1     3   5
+	 *
+	 */
+	gearBodySegmentVertexCount = 4;
+	gearBodyTotalVertexCount = 2 + gearBodySegmentVertexCount * toothCount;
+	gearBodyStripCount[0] = gearBodyTotalVertexCount;
+
+	TriangleStripArray frontGearBody
+	    = new TriangleStripArray(gearBodyTotalVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     gearBodyStripCount);
+
+	xDirection = (float)Math.cos(gearStartAngle);
+	yDirection = (float)Math.sin(gearStartAngle);
+	xShaft0 = shaftRadius * xDirection;
+	yShaft0 = shaftRadius * yDirection;
+	xRoot0 = bodyOuterRadius * xDirection;
+	yRoot0 = bodyOuterRadius * yDirection;
+
+	coordinate.set(xRoot0, yRoot0, frontZ);
+	frontGearBody.setCoordinate(0, coordinate);
+	frontGearBody.setNormal(0, frontNormal);
+
+	coordinate.set(xShaft0, yShaft0, frontZ);
+	frontGearBody.setCoordinate(1, coordinate);
+	frontGearBody.setNormal(1, frontNormal);
+
+	for(int count = 0; count < toothCount; count++) {
+	    index = 2 + count * 4;
+	    toothStartAngle
+		= gearStartAngle + circularPitchAngle * (double)count;
+	    toothValleyStartAngle
+		= toothStartAngle + toothValleyAngleIncrement;
+	    nextToothStartAngle = toothStartAngle + circularPitchAngle;
+
+	    xDirection = (float)Math.cos(toothValleyStartAngle);
+	    yDirection = (float)Math.sin(toothValleyStartAngle);
+	    xShaft3 = shaftRadius * xDirection;
+	    yShaft3 = shaftRadius * yDirection;
+	    xRoot3 = bodyOuterRadius * xDirection;
+	    yRoot3 = bodyOuterRadius * yDirection;
+
+	    xDirection = (float)Math.cos(nextToothStartAngle);
+	    yDirection = (float)Math.sin(nextToothStartAngle);
+	    xShaft4 = shaftRadius * xDirection;
+	    yShaft4 = shaftRadius * yDirection;
+	    xRoot4 = bodyOuterRadius * xDirection;
+	    yRoot4 = bodyOuterRadius * yDirection;
+
+	    coordinate.set(xRoot3, yRoot3, frontZ);
+	    frontGearBody.setCoordinate(index, coordinate);
+	    frontGearBody.setNormal(index, frontNormal);
+
+	    coordinate.set(xShaft3, yShaft3, frontZ);
+	    frontGearBody.setCoordinate(index + 1, coordinate);
+	    frontGearBody.setNormal(index + 1, frontNormal);
+
+	    coordinate.set(xRoot4, yRoot4, frontZ);
+	    frontGearBody.setCoordinate(index + 2, coordinate);
+	    frontGearBody.setNormal(index + 2, frontNormal);
+
+	    coordinate.set(xShaft4, yShaft4, frontZ);
+	    frontGearBody.setCoordinate(index + 3, coordinate);
+	    frontGearBody.setNormal(index + 3, frontNormal);
+	}
+	newShape = new Shape3D(frontGearBody, look);
+	this.addChild(newShape);
+
+	// Construct the gear's rear body (rear facing torus disc)
+	TriangleStripArray rearGearBody
+	    = new TriangleStripArray(gearBodyTotalVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     gearBodyStripCount);
+	xDirection = (float)Math.cos(gearStartAngle);
+	yDirection = (float)Math.sin(gearStartAngle);
+	xShaft0 = shaftRadius * xDirection;
+	yShaft0 = shaftRadius * yDirection;
+	xRoot0 = bodyOuterRadius * xDirection;
+	yRoot0 = bodyOuterRadius * yDirection;
+
+	coordinate.set(xShaft0, yShaft0, rearZ);
+	rearGearBody.setCoordinate(0, coordinate);
+	rearGearBody.setNormal(0, rearNormal);
+
+	coordinate.set(xRoot0, yRoot0, rearZ);
+	rearGearBody.setCoordinate(1, coordinate);
+	rearGearBody.setNormal(1, rearNormal);
+
+	for(int count = 0; count < toothCount; count++) {
+	    index = 2 + count * 4;
+	    toothStartAngle
+		= gearStartAngle + circularPitchAngle * (double)count;
+	    toothValleyStartAngle
+		= toothStartAngle + toothValleyAngleIncrement;
+	    nextToothStartAngle = toothStartAngle + circularPitchAngle;
+
+	    xDirection = (float)Math.cos(toothValleyStartAngle);
+	    yDirection = (float)Math.sin(toothValleyStartAngle);
+	    xShaft3 = shaftRadius * xDirection;
+	    yShaft3 = shaftRadius * yDirection;
+	    xRoot3 = bodyOuterRadius * xDirection;
+	    yRoot3 = bodyOuterRadius * yDirection;
+
+	    xDirection = (float)Math.cos(nextToothStartAngle);
+	    yDirection = (float)Math.sin(nextToothStartAngle);
+	    xShaft4 = shaftRadius * xDirection;
+	    yShaft4 = shaftRadius * yDirection;
+	    xRoot4 = bodyOuterRadius * xDirection;
+	    yRoot4 = bodyOuterRadius * yDirection;
+
+	    coordinate.set(xShaft3, yShaft3, rearZ);
+	    rearGearBody.setCoordinate(index, coordinate);
+	    rearGearBody.setNormal(index, rearNormal);
+
+	    coordinate.set(xRoot3, yRoot3, rearZ);
+	    rearGearBody.setCoordinate(index + 1, coordinate);
+	    rearGearBody.setNormal(index + 1, rearNormal);
+
+	    coordinate.set(xShaft4, yShaft4, rearZ);
+	    rearGearBody.setCoordinate(index + 2, coordinate);
+	    rearGearBody.setNormal(index + 2, rearNormal);
+
+	    coordinate.set(xRoot4, yRoot4, rearZ);
+	    rearGearBody.setCoordinate(index + 3, coordinate);
+	    rearGearBody.setNormal(index + 3, rearNormal);
+
+	}
+	newShape = new Shape3D(rearGearBody, look);
+	this.addChild(newShape);
+    }
+
+    void addCylinderSkins(float shaftRadius, float length,
+			  int normalDirection, Appearance look) {
+	int insideShaftVertexCount;		  // #(vertices) for shaft
+	int insideShaftStripCount[] = new int[1]; // #(vertices) in strip/strip
+	double toothStartAngle, nextToothStartAngle, toothValleyStartAngle;
+
+	// A ray from the gear center, used in normal calculations
+	float xDirection, yDirection;
+
+	// The z coordinates for the body disks
+	final float frontZ = -0.5f * length;
+	final float rearZ = 0.5f * length;
+
+	// Temporary variables for storing coordinates, points, and vectors 
+	float xShaft3, yShaft3, xShaft4, yShaft4;
+	Point3f coordinate = new Point3f(0.0f, 0.0f, 0.0f);
+	Vector3f surfaceNormal = new Vector3f();
+
+	Shape3D newShape;
+	int index;
+	int firstIndex;
+	int secondIndex;
+
+
+	/*
+	 * Construct gear's inside shaft cylinder
+	 * First the tooth's up, flat outer, and down distances
+	 * Second the tooth's flat inner distance
+	 *
+	 * Outward facing vertex order:
+	 *      0_______2____4
+	 *      |      /|   /|
+	 *      |    /  |  / |
+	 *      |  /    | /  |
+	 *      |/______|/___|
+	 *      1       3    5
+	 *
+	 * Inward facing vertex order:
+	 *	1_______3____5
+	 *      |\      |\   |
+	 *      |  \    | \  |
+	 *      |    \  |  \ |
+	 *      |______\|___\|
+	 *      0       2    4
+	 */
+	insideShaftVertexCount = 4 * toothCount + 2;
+	insideShaftStripCount[0] = insideShaftVertexCount;
+
+	TriangleStripArray insideShaft
+	    = new TriangleStripArray(insideShaftVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     insideShaftStripCount);
+	xShaft3 = shaftRadius * (float)Math.cos(gearStartAngle);
+	yShaft3 = shaftRadius * (float)Math.sin(gearStartAngle);
+
+	if (normalDirection == OutwardNormals) {
+	    surfaceNormal.set(1.0f, 0.0f, 0.0f);
+	    firstIndex = 1;
+	    secondIndex = 0;
+	} else {
+	    surfaceNormal.set(-1.0f, 0.0f, 0.0f);
+	    firstIndex = 0;
+	    secondIndex = 1;
+	}
+
+	// Coordinate labeled 0 in the strip
+	coordinate.set(shaftRadius, 0.0f, frontZ);
+	insideShaft.setCoordinate(firstIndex, coordinate);
+	insideShaft.setNormal(firstIndex, surfaceNormal);
+
+	// Coordinate labeled 1 in the strip
+	coordinate.set(shaftRadius, 0.0f, rearZ);
+	insideShaft.setCoordinate(secondIndex, coordinate);
+	insideShaft.setNormal(secondIndex, surfaceNormal);
+
+	for(int count = 0; count < toothCount; count++) {
+	    index = 2 + count * 4;
+
+	    toothStartAngle = circularPitchAngle * (double)count;
+	    toothValleyStartAngle
+		= toothStartAngle + toothValleyAngleIncrement;
+	    nextToothStartAngle = toothStartAngle + circularPitchAngle;
+
+	    xDirection = (float)Math.cos(toothValleyStartAngle);
+	    yDirection = (float)Math.sin(toothValleyStartAngle);
+	    xShaft3 = shaftRadius * xDirection;
+	    yShaft3 = shaftRadius * yDirection;
+	    if (normalDirection == OutwardNormals)
+		surfaceNormal.set(xDirection, yDirection, 0.0f);
+	    else
+		surfaceNormal.set(-xDirection, -yDirection, 0.0f);
+
+	    // Coordinate labeled 2 in the strip
+	    coordinate.set(xShaft3, yShaft3, frontZ);
+	    insideShaft.setCoordinate(index + firstIndex, coordinate);
+	    insideShaft.setNormal(index + firstIndex, surfaceNormal);
+
+	    // Coordinate labeled 3 in the strip
+	    coordinate.set(xShaft3, yShaft3, rearZ);
+	    insideShaft.setCoordinate(index + secondIndex, coordinate);
+	    insideShaft.setNormal(index + secondIndex, surfaceNormal);
+
+	    xDirection = (float)Math.cos(nextToothStartAngle);
+	    yDirection = (float)Math.sin(nextToothStartAngle);
+	    xShaft4 = shaftRadius * xDirection;
+	    yShaft4 = shaftRadius * yDirection;
+	    if (normalDirection == OutwardNormals)
+		surfaceNormal.set(xDirection, yDirection, 0.0f);
+	    else
+		surfaceNormal.set(-xDirection, -yDirection, 0.0f);
+
+	    // Coordinate labeled 4 in the strip
+	    coordinate.set(xShaft4, yShaft4, frontZ);
+	    insideShaft.setCoordinate(index + 2 + firstIndex, coordinate);
+	    insideShaft.setNormal(index + 2 + firstIndex, surfaceNormal);
+
+	    // Coordinate labeled 5 in the strip
+	    coordinate.set(xShaft4, yShaft4, rearZ);
+	    insideShaft.setCoordinate(index + 2 + secondIndex, coordinate);
+	    insideShaft.setNormal(index + 2 + secondIndex, surfaceNormal);
+
+	}
+	newShape = new Shape3D(insideShaft, look);
+	this.addChild(newShape);
+    }
+
+    public float getToothTopCenterAngle() {
+	return toothTopCenterAngle;
+    }
+    
+    public float getValleyCenterAngle() {
+	return valleyCenterAngle;
+    }
+
+    public float getCircularPitchAngle() {
+	return circularPitchAngle;
+    }
+}
diff --git a/src/GearTest/GearBox.html b/src/GearTest/GearBox.html
new file mode 100644
index 0000000..0137867
--- /dev/null
+++ b/src/GearTest/GearBox.html
@@ -0,0 +1,15 @@
+<HTML>
+<HEAD>
+<TITLE>GearBox</TITLE>
+</HEAD>
+<BODY BGCOLOR="#000000">
+<applet align=middle code="GearBox.class" width=700 height=700>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+</applet>
+</BODY>
+</HTML>
diff --git a/src/GearTest/GearBox.java b/src/GearTest/GearBox.java
new file mode 100644
index 0000000..bac308a
--- /dev/null
+++ b/src/GearTest/GearBox.java
@@ -0,0 +1,354 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import com.sun.j3d.utils.behaviors.mouse.*;
+import java.applet.Applet;
+import java.awt.*;
+import java.awt.event.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+import java.lang.Integer;
+import com.sun.j3d.utils.behaviors.vp.*;
+
+public class GearBox extends Applet {
+
+    static final int defaultToothCount = 48;
+    private int toothCount;
+    private SimpleUniverse u = null;
+    
+    public BranchGroup createGearBox(int toothCount) {
+	Transform3D tempTransform = new Transform3D();
+
+	// Create the root of the branch graph
+	BranchGroup branchRoot = createBranchEnvironment();
+
+        // Create a Transformgroup to scale all objects so they
+        // appear in the scene.
+        TransformGroup objScale = new TransformGroup();
+        Transform3D t3d = new Transform3D();
+        t3d.setScale(0.4);
+        objScale.setTransform(t3d);
+        branchRoot.addChild(objScale);
+
+	// Create an Appearance.
+	Appearance look = new Appearance();
+	Color3f objColor = new Color3f(0.5f, 0.5f, 0.6f);
+	Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
+	Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
+	look.setMaterial(new Material(objColor, black,
+				      objColor, white, 100.0f));
+
+
+	// Create the transform group node and initialize it to the
+	// identity.  Enable the TRANSFORM_WRITE capability so that
+	// our behavior code can modify it at runtime.  Add it to the
+	// root of the subgraph.
+	TransformGroup gearboxTrans = new TransformGroup();
+	gearboxTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+	gearboxTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
+	objScale.addChild(gearboxTrans);
+
+	// Create a bounds for the mouse behavior methods
+        BoundingSphere bounds =
+            new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+	
+	// Define the shaft base information
+	int shaftCount = 4;
+	int secondsPerRevolution = 8000;
+
+	// Create the Shaft(s)
+	Shaft shafts[] = new Shaft[shaftCount];
+	TransformGroup shaftTGs[] = new TransformGroup[shaftCount];
+	Alpha shaftAlphas[] = new Alpha[shaftCount];
+	RotationInterpolator shaftRotors[]
+	    = new RotationInterpolator[shaftCount];
+	Transform3D shaftAxis[] = new Transform3D[shaftCount];
+
+	// Note: the following arrays we're incorporated to make changing
+	// the gearbox easier.
+	float shaftRatios[] = new float[shaftCount];
+	shaftRatios[0] = 1.0f;
+	shaftRatios[1] = 0.5f;
+	shaftRatios[2] = 0.75f;
+	shaftRatios[3] = 5.0f;
+
+	float shaftRadius[] = new float[shaftCount];
+	shaftRadius[0] = 0.2f;
+	shaftRadius[1] = 0.2f;
+	shaftRadius[2] = 0.2f;
+	shaftRadius[3] = 0.2f;
+
+	float shaftLength[] = new float[shaftCount];
+	shaftLength[0] = 1.8f;
+	shaftLength[1] = 0.8f;
+	shaftLength[2] = 0.8f;
+	shaftLength[3] = 0.8f;
+
+	float shaftDirection[] = new float[shaftCount];
+	shaftDirection[0] = 1.0f;
+	shaftDirection[1] = -1.0f;
+	shaftDirection[2] = 1.0f;
+	shaftDirection[3] = -1.0f;
+
+	Vector3d shaftPlacement[] = new Vector3d[shaftCount];
+	shaftPlacement[0] = new Vector3d(-0.75, -0.9, 0.0);
+	shaftPlacement[1] = new Vector3d(0.75, -0.9, 0.0);
+	shaftPlacement[2] = new Vector3d(0.75, 0.35, 0.0);
+	shaftPlacement[3] = new Vector3d(-0.75, 0.60, -0.7);
+
+	// Create the shafts.
+	for(int i = 0; i < shaftCount; i++) {
+	    shafts[i] = new Shaft(shaftRadius[i], shaftLength[i], 25, look);
+	}
+
+	// Create a transform group node for placing each shaft
+	for(int i = 0; i < shaftCount; i++) {
+	    shaftTGs[i] = new TransformGroup();
+	    gearboxTrans.addChild(shaftTGs[i]);
+	    shaftTGs[i].getTransform(tempTransform);
+	    tempTransform.setTranslation(shaftPlacement[i]);
+	    shaftTGs[i].setTransform(tempTransform);
+	    shaftTGs[i].addChild(shafts[i]);
+	}
+
+	// Add rotation interpolators to rotate the shaft in the appropriate
+	// direction and at the appropriate rate
+	for(int i = 0; i < shaftCount; i++) {
+	    shaftAlphas[i] = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0,
+				      (long)(secondsPerRevolution
+					     * shaftRatios[i]),
+				      0, 0,
+				      0, 0, 0);
+	    shaftAxis[i] = new Transform3D();
+	    shaftAxis[i].rotX(Math.PI/2.0);
+	    shaftRotors[i]
+		= new RotationInterpolator(shaftAlphas[i], shafts[i],
+					   shaftAxis[i],
+					   0.0f,
+					   shaftDirection[i] * 
+					   (float) Math.PI * 2.0f);
+	    shaftRotors[i].setSchedulingBounds(bounds);
+	    shaftTGs[i].addChild(shaftRotors[i]);
+	}
+
+	// Define the gear base information.  Again, these arrays exist to
+	// make the process of changing the GearBox via an editor faster
+	int gearCount = 5;
+	float valleyToCircularPitchRatio = .15f;
+	float pitchCircleRadius = 1.0f;
+	float addendum = 0.05f;
+	float dedendum = 0.05f;
+	float gearThickness = 0.3f;
+	float toothTipThickness = 0.27f;
+
+	// Create an array of gears and their associated information
+	SpurGear gears[] = new SpurGear[gearCount];
+	TransformGroup gearTGs[] = new TransformGroup[gearCount];
+
+	int gearShaft[] = new int[gearCount];
+	gearShaft[0] = 0;
+	gearShaft[1] = 1;
+	gearShaft[2] = 2;
+	gearShaft[3] = 0;
+	gearShaft[4] = 3;
+
+	float ratio[] = new float[gearCount];
+	ratio[0] = 1.0f;
+	ratio[1] = 0.5f;
+	ratio[2] = 0.75f;
+	ratio[3] = 0.25f;
+	ratio[4] = 1.25f;
+
+	Vector3d placement[] = new Vector3d[gearCount];
+	placement[0] = new Vector3d(0.0, 0.0, 0.0);
+	placement[1] = new Vector3d(0.0, 0.0, 0.0);
+	placement[2] = new Vector3d(0.0, 0.0, 0.0);
+	placement[3] = new Vector3d(0.0, 0.0, -0.7);
+	placement[4] = new Vector3d(0.0, 0.0, 0.0);
+
+	// Create the gears.
+	for(int i = 0; i < gearCount; i++) {
+	    gears[i]
+		= new SpurGearThinBody(((int)((float)toothCount * ratio[i])),
+				       pitchCircleRadius * ratio[i],
+				       shaftRadius[0],
+				       addendum, dedendum,
+				       gearThickness,
+				       toothTipThickness,
+				       valleyToCircularPitchRatio, look);
+	}
+
+	// Create a transform group node for arranging the gears on a shaft
+	// and attach the gear to its associated shaft
+	for(int i = 0; i < gearCount; i++) {
+	    gearTGs[i] = new TransformGroup();
+	    gearTGs[i].getTransform(tempTransform);
+	    tempTransform.rotZ((shaftDirection[gearShaft[i]] == -1.0) ?
+			       gears[i].getCircularPitchAngle()/-2.0f :
+			       0.0f);
+	    tempTransform.setTranslation(placement[i]);
+	    gearTGs[i].setTransform(tempTransform);
+	    gearTGs[i].addChild(gears[i]);
+	    shafts[gearShaft[i]].addChild(gearTGs[i]);
+	}
+
+        // Have Java 3D perform optimizations on this scene graph.
+	branchRoot.compile();
+
+	return branchRoot;
+    }
+
+    BranchGroup createBranchEnvironment(){
+        // Create the root of the branch graph
+        BranchGroup branchRoot = new BranchGroup();
+         
+        // Create a bounds for the background and lights
+        BoundingSphere bounds =
+            new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+        // Set up the background
+        Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
+        Background bgNode = new Background(bgColor);
+        bgNode.setApplicationBounds(bounds);
+        branchRoot.addChild(bgNode);
+
+        // Set up the ambient light
+        Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
+        AmbientLight ambientLightNode = new AmbientLight(ambientColor);
+        ambientLightNode.setInfluencingBounds(bounds);
+        branchRoot.addChild(ambientLightNode);
+
+        // Set up the directional lights
+        Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
+        Vector3f light1Direction  = new Vector3f(1.0f, 1.0f, 1.0f);
+        Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f);
+	Vector3f light2Direction  = new Vector3f(-1.0f, -1.0f, -1.0f);
+
+        DirectionalLight light1
+            = new DirectionalLight(light1Color, light1Direction);
+        light1.setInfluencingBounds(bounds);
+        branchRoot.addChild(light1);
+
+        DirectionalLight light2
+            = new DirectionalLight(light2Color, light2Direction);
+        light2.setInfluencingBounds(bounds);
+        branchRoot.addChild(light2);
+
+        return branchRoot;
+    }
+
+    public GearBox() {
+	this(defaultToothCount);
+    }
+
+    public GearBox(int toothCount) {
+	this.toothCount = toothCount;
+    }
+
+    public void init() {
+	setLayout(new BorderLayout());
+        GraphicsConfiguration config =
+           SimpleUniverse.getPreferredConfiguration();
+
+        Canvas3D c = new Canvas3D(config);
+	add("Center", c);
+	
+	// Create the gearbox and attach it to the virtual universe
+	BranchGroup scene = createGearBox(toothCount);
+	u = new SimpleUniverse(c);
+
+	// add mouse behaviors to the ViewingPlatform
+	ViewingPlatform viewingPlatform = u.getViewingPlatform();
+
+        // This will move the ViewPlatform back a bit so the
+        // objects in the scene can be viewed.
+	viewingPlatform.setNominalViewingTransform();
+
+	// add orbit behavior to the ViewingPlatform
+	OrbitBehavior orbit = new OrbitBehavior(c, OrbitBehavior.REVERSE_ALL);
+	BoundingSphere bounds =
+	    new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
+	orbit.setSchedulingBounds(bounds);
+	viewingPlatform.setViewPlatformBehavior(orbit);
+
+	u.addBranchGraph(scene);
+    }
+
+    public void destroy() {
+	u.cleanup();
+    }
+
+    //
+    // The following allows GearBox to be run as an application
+    // as well as an applet
+    //
+    public static void main(String[] args) {
+	int value;
+	
+	if (args.length > 1) {
+	    System.out.println("Usage: java GearBox  #teeth (LCD 4)");
+	    System.exit(0);
+	} else if (args.length == 0) {	
+	    new MainFrame(new GearBox(), 700, 700);
+	} else
+	    {
+		try{
+		    value = Integer.parseInt(args[0]);
+		} catch (NumberFormatException e) {
+		    System.out.println("Illegal integer specified");
+		    System.out.println("Usage: java GearBox  #teeth (LCD 4)");
+		    value = 0;
+		    System.exit(0);
+		}
+		if (value <= 0 | (value % 4) != 0) {
+		    System.out.println("Integer not a positive multiple of 4");
+		    System.out.println("Usage: java GearBox  #teeth (LCD 4)");
+		    System.exit(0);
+		}
+		new MainFrame(new GearBox(value), 700, 700);
+	    }
+    }
+}
diff --git a/src/GearTest/GearBox_plugin.html b/src/GearTest/GearBox_plugin.html
new file mode 100644
index 0000000..1c6f737
--- /dev/null
+++ b/src/GearTest/GearBox_plugin.html
@@ -0,0 +1,39 @@
+<HTML>
+<HEAD>
+<TITLE>GearBox</TITLE>
+</HEAD>
+<BODY BGCOLOR="#000000">
+<!--"CONVERTED_APPLET"-->
+<!-- CONVERTER VERSION 1.3 -->
+<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
+WIDTH = 700 HEIGHT = 700 ALIGN = middle  codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,0,0">
+<PARAM NAME = CODE VALUE = "GearBox.class" >
+
+<PARAM NAME="type" VALUE="application/x-java-applet;version=1.2.2">
+<PARAM NAME="scriptable" VALUE="false">
+<COMMENT>
+<EMBED type="application/x-java-applet;version=1.2.2"  CODE = "GearBox.class" WIDTH = 700 HEIGHT = 700 ALIGN = middle  scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3/plugin-install.html"><NOEMBED></COMMENT>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+</NOEMBED></EMBED>
+</OBJECT>
+
+<!--
+<APPLET CODE = "GearBox.class" WIDTH = 700 HEIGHT = 700 ALIGN = middle>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+
+</APPLET>
+-->
+<!--"END_CONVERTED_APPLET"-->
+
+</BODY>
+</HTML>
diff --git a/src/GearTest/GearTest.html b/src/GearTest/GearTest.html
new file mode 100644
index 0000000..5416cf8
--- /dev/null
+++ b/src/GearTest/GearTest.html
@@ -0,0 +1,15 @@
+<HTML>
+<HEAD>
+<TITLE>GearTest</TITLE>
+</HEAD>
+<BODY BGCOLOR="#000000">
+<applet align=middle code="GearTest.class" width=700 height=700>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+</applet>
+</BODY>
+</HTML>
diff --git a/src/GearTest/GearTest.java b/src/GearTest/GearTest.java
new file mode 100644
index 0000000..99c9e27
--- /dev/null
+++ b/src/GearTest/GearTest.java
@@ -0,0 +1,206 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.applet.Applet;
+import java.awt.*;
+import java.awt.event.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class GearTest extends Applet {
+
+    static final int defaultToothCount = 24;
+
+    private int toothCount;
+
+    private SimpleUniverse u = null;
+
+    public BranchGroup createSceneGraph(int toothCount) {
+	// Create the root of the branch graph
+	BranchGroup objRoot = new BranchGroup();
+
+        // Create a Transformgroup to scale all objects so they
+        // appear in the scene.
+        TransformGroup objScale = new TransformGroup();
+        Transform3D t3d = new Transform3D();
+        t3d.setScale(0.4);
+        objScale.setTransform(t3d);
+        objRoot.addChild(objScale);
+
+	// Create a bounds for the background and lights
+	BoundingSphere bounds =
+	    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+	// Set up the background
+	Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
+	Background bgNode = new Background(bgColor);
+	bgNode.setApplicationBounds(bounds);
+	objScale.addChild(bgNode);
+
+	// Set up the global lights
+	Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
+	Vector3f light1Direction  = new Vector3f(4.0f, -7.0f, -12.0f);
+	Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);
+	Vector3f light2Direction  = new Vector3f(-6.0f, -2.0f, -1.0f);
+	Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
+
+	AmbientLight ambientLightNode = new AmbientLight(ambientColor);
+	ambientLightNode.setInfluencingBounds(bounds);
+	objScale.addChild(ambientLightNode);
+
+	DirectionalLight light1
+	    = new DirectionalLight(light1Color, light1Direction);
+	light1.setInfluencingBounds(bounds);
+	objScale.addChild(light1);
+
+	DirectionalLight light2
+	    = new DirectionalLight(light2Color, light2Direction);
+	light2.setInfluencingBounds(bounds);
+	objScale.addChild(light2);
+
+	// Create the transform group node and initialize it to the
+	// identity.  Enable the TRANSFORM_WRITE capability so that
+	// our behavior code can modify it at runtime.  Add it to the
+	// root of the subgraph.
+	TransformGroup objTrans = new TransformGroup();
+	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+	objScale.addChild(objTrans);
+
+	// Create an Appearance.
+	Appearance look = new Appearance();
+	Color3f objColor = new Color3f(0.5f, 0.5f, 0.6f);
+	Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
+	Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
+	look.setMaterial(new Material(objColor, black, objColor, white, 100.0f));
+
+	// Create a gear, add it to the scene graph.
+	//	SpurGear gear = new SpurGear(toothCount, 1.0f, 0.2f,
+	SpurGear gear = new SpurGearThinBody(toothCount, 1.0f, 0.2f,
+				     0.05f, 0.05f, 0.3f, 0.28f, look);
+	objTrans.addChild(gear);
+
+	// Create a new Behavior object that will rotate the object and
+	// add it into the scene graph.
+	Transform3D yAxis = new Transform3D();
+	Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+					0, 0,
+					8000, 0, 0,
+					0, 0, 0);
+
+	RotationInterpolator rotator =
+	    new RotationInterpolator(rotationAlpha, objTrans, yAxis,
+				     0.0f, (float) Math.PI*2.0f);
+	rotator.setSchedulingBounds(bounds);
+	objTrans.addChild(rotator);
+
+        // Have Java 3D perform optimizations on this scene graph.
+        objRoot.compile();
+
+	return objRoot;
+    }
+
+    public GearTest() {
+	this(defaultToothCount);
+    }
+
+    public GearTest(int toothCount) {
+	this.toothCount = toothCount;
+    }
+
+    public void init() {
+	setLayout(new BorderLayout());
+	GraphicsConfiguration config =
+	    SimpleUniverse.getPreferredConfiguration();
+
+        Canvas3D c = new Canvas3D(config);
+	add("Center", c);
+
+	// Create a simple scene and attach it to the virtual universe
+	BranchGroup scene = createSceneGraph(toothCount);
+	u = new SimpleUniverse(c);
+
+        // This will move the ViewPlatform back a bit so the
+        // objects in the scene can be viewed.
+        u.getViewingPlatform().setNominalViewingTransform();
+
+	u.addBranchGraph(scene);
+    }
+
+    public void destroy() {
+	u.cleanup();
+    }
+
+    //
+    // The following allows GearTest to be run as an application
+    // as well as an applet
+    //
+    public static void main(String[] args) {
+	int value;
+	
+	if (args.length > 1) {
+	    System.out.println("Usage: java GearTest [#teeth]");
+	    System.exit(0);
+	} else if (args.length == 0) {	
+	    new MainFrame(new GearTest(), 700, 700);
+	} else
+	    {
+		try {
+		    value = Integer.parseInt(args[0]);
+		} catch (NumberFormatException e) {
+		    System.out.println("Illegal integer specified");
+		    System.out.println("Usage: java GearTest [#teeth]");
+		    value = 0;
+		    System.exit(0);
+		}
+		if (value <= 0) {
+		    System.out.println("Integer must be positive (> 0)");
+		    System.out.println("Usage: java GearBox [#teeth]");
+		    System.exit(0);
+		}
+		new MainFrame(new GearTest(value), 700, 700);
+	    }
+    }
+}
diff --git a/src/GearTest/GearTest_plugin.html b/src/GearTest/GearTest_plugin.html
new file mode 100644
index 0000000..a2f7b06
--- /dev/null
+++ b/src/GearTest/GearTest_plugin.html
@@ -0,0 +1,39 @@
+<HTML>
+<HEAD>
+<TITLE>GearTest</TITLE>
+</HEAD>
+<BODY BGCOLOR="#000000">
+<!--"CONVERTED_APPLET"-->
+<!-- CONVERTER VERSION 1.3 -->
+<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
+WIDTH = 700 HEIGHT = 700 ALIGN = middle  codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,0,0">
+<PARAM NAME = CODE VALUE = "GearTest.class" >
+
+<PARAM NAME="type" VALUE="application/x-java-applet;version=1.2.2">
+<PARAM NAME="scriptable" VALUE="false">
+<COMMENT>
+<EMBED type="application/x-java-applet;version=1.2.2"  CODE = "GearTest.class" WIDTH = 700 HEIGHT = 700 ALIGN = middle  scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3/plugin-install.html"><NOEMBED></COMMENT>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+</NOEMBED></EMBED>
+</OBJECT>
+
+<!--
+<APPLET CODE = "GearTest.class" WIDTH = 700 HEIGHT = 700 ALIGN = middle>
+<blockquote>
+<hr>
+If you were using a Java-capable browser,
+you would see Hello Universe! instead of this paragraph.
+<hr>
+</blockquote>
+
+</APPLET>
+-->
+<!--"END_CONVERTED_APPLET"-->
+
+</BODY>
+</HTML>
diff --git a/src/GearTest/Shaft.java b/src/GearTest/Shaft.java
new file mode 100644
index 0000000..f7f9d9a
--- /dev/null
+++ b/src/GearTest/Shaft.java
@@ -0,0 +1,196 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.lang.Math.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class Shaft extends javax.media.j3d.TransformGroup {
+    
+    /**
+     * Construct a Shaft;
+     * @return a new shaft that with the specified radius centered about
+     * the origin an laying in the XY plane and of a specified length
+     * extending in the Z dimension
+     * @param radius radius of shaft
+     * @param length shaft length shaft extends from -length/2 to length/2 in
+     * the Z dimension
+     * @param segmentCount number of segments for the shaft face
+     * @param look the Appearance to associate with this shaft
+     */
+    public Shaft(float radius, float length, int segmentCount,
+		 Appearance look) {
+	// The direction of the ray from the shaft's center
+	float xDirection, yDirection;
+	float xShaft, yShaft;
+
+	// The z coordinates for the shaft's faces (never change)
+	float frontZ = -0.5f * length;
+	float rearZ = 0.5f * length;
+
+	int shaftFaceVertexCount;	  // #(vertices) per shaft face
+	int shaftFaceTotalVertexCount;	  // total #(vertices) in all teeth
+	int shaftFaceStripCount[] = new int[1]; // per shaft vertex count
+	int shaftVertexCount;	  // #(vertices) for shaft
+	int shaftStripCount[] = new int[1]; // #(vertices) in strip/strip
+
+	// Front and rear facing normals for the shaft's faces
+	Vector3f frontNormal = new Vector3f(0.0f, 0.0f, -1.0f);
+	Vector3f rearNormal = new Vector3f(0.0f, 0.0f, 1.0f);
+	// Outward facing normal
+	Vector3f outNormal = new Vector3f(1.0f, 0.0f, 0.0f);
+
+	// Temporary variables for storing coordinates and vectors 
+	Point3f coordinate = new Point3f(0.0f, 0.0f, 0.0f);
+	Shape3D newShape;
+	
+	// The angle subtended by a single segment
+	double segmentAngle = 2.0 * Math.PI/segmentCount;
+	double tempAngle;
+
+	// Allow this object to spin. etc.
+	this.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+
+	/* for the forward facing fan:
+	 *               ___3___
+	 *             -    |    -
+	 *          /       |       \
+	 *       4/\        |        /\2
+	 *     /     \      |      /     \
+	 *   /         \    |    /         \
+	 *  :            \  |  /            :
+	 * |--------------- *----------------|
+	 * 5                0                1
+	 *
+	 * for backward facing fan exchange 1 with 5; 2 with 4, etc.
+	 */
+
+	// Construct the shaft's front and rear face
+	shaftFaceVertexCount = segmentCount + 2;
+	shaftFaceStripCount[0] = shaftFaceVertexCount;
+
+	TriangleFanArray frontShaftFace
+	    = new TriangleFanArray(shaftFaceVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     shaftFaceStripCount);
+
+	TriangleFanArray rearShaftFace
+	    = new TriangleFanArray(shaftFaceVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     shaftFaceStripCount);
+
+	coordinate.set(0.0f, 0.0f, frontZ);
+	frontShaftFace.setCoordinate(0, coordinate);
+	frontShaftFace.setNormal(0, frontNormal);
+
+	coordinate.set(0.0f, 0.0f, rearZ);
+	rearShaftFace.setCoordinate(0, coordinate);
+	rearShaftFace.setNormal(0, rearNormal);
+
+	for(int index = 1; index < segmentCount+2; index++) {
+
+	    tempAngle = segmentAngle * -(double)index;
+	    coordinate.set(radius * (float)Math.cos(tempAngle),
+			   radius * (float)Math.sin(tempAngle),
+			   frontZ);
+	    frontShaftFace.setCoordinate(index, coordinate);
+	    frontShaftFace.setNormal(index, frontNormal);
+
+	    tempAngle = -tempAngle;
+	    coordinate.set(radius * (float)Math.cos(tempAngle),
+			   radius * (float)Math.sin(tempAngle),
+			   rearZ);
+	    rearShaftFace.setCoordinate(index, coordinate);
+	    rearShaftFace.setNormal(index, rearNormal);
+	}
+	newShape = new Shape3D(frontShaftFace, look);
+	this.addChild(newShape);
+	newShape = new Shape3D(rearShaftFace, look);
+	this.addChild(newShape);
+
+	// Construct shaft's outer skin (the cylinder body)
+	shaftVertexCount = 2 * segmentCount + 2;
+	shaftStripCount[0] = shaftVertexCount;
+
+	TriangleStripArray shaft
+	    = new TriangleStripArray(shaftVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     shaftStripCount);
+
+	outNormal.set(1.0f, 0.0f, 0.0f);
+
+	coordinate.set(radius, 0.0f, rearZ);
+	shaft.setCoordinate(0, coordinate);
+	shaft.setNormal(0, outNormal);
+
+	coordinate.set(radius, 0.0f, frontZ);
+	shaft.setCoordinate(1, coordinate);
+	shaft.setNormal(1, outNormal);
+
+	for(int count = 0; count < segmentCount; count++) {
+	    int index = 2 + count * 2;
+
+	    tempAngle = segmentAngle * (double)(count + 1);
+	    xDirection = (float)Math.cos(tempAngle);
+	    yDirection = (float)Math.sin(tempAngle);
+	    xShaft = radius * xDirection;
+	    yShaft = radius * yDirection;
+	    outNormal.set(xDirection, yDirection, 0.0f);
+
+	    coordinate.set(xShaft, yShaft, rearZ);
+	    shaft.setCoordinate(index, coordinate);
+	    shaft.setNormal(index, outNormal);
+	    
+	    coordinate.set(xShaft, yShaft, frontZ);
+	    shaft.setCoordinate(index + 1, coordinate);
+	    shaft.setNormal(index + 1, outNormal);
+	}
+	newShape = new Shape3D(shaft, look);
+	this.addChild(newShape);
+    }
+}
+
diff --git a/src/GearTest/SpurGear.java b/src/GearTest/SpurGear.java
new file mode 100644
index 0000000..c294503
--- /dev/null
+++ b/src/GearTest/SpurGear.java
@@ -0,0 +1,556 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.lang.Math.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class SpurGear extends Gear {
+    
+    float toothTopAngleIncrement;
+    float toothDeclineAngleIncrement;
+
+    float rootRadius;
+    float outsideRadius;
+
+    //The angle subtended by the ascending or descending portion of a tooth
+    float circularToothEdgeAngle;
+    // The angle subtended by a flat (either a tooth top or a valley
+    // between teeth
+    float circularToothFlatAngle;
+
+    /**
+     * internal constructor for SpurGear, used by subclasses to establish
+     * SpurGear's required state
+     * @return a new spur gear that contains sufficient information to
+     * continue building
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param toothToValleyAngleRatio the ratio of the angle subtended by the
+     * tooth to the angle subtended by the valley (must be <= .25) 
+     */
+    SpurGear(int toothCount, float pitchCircleRadius,
+	     float addendum, float dedendum, float toothToValleyAngleRatio) {
+	
+	super(toothCount);
+	
+	// The angle about Z subtended by one tooth and its associated valley
+	circularPitchAngle = (float)(2.0 * Math.PI / (double)toothCount);
+
+	// The angle subtended by a flat (either a tooth top or a valley
+	// between teeth
+	circularToothFlatAngle = circularPitchAngle * toothToValleyAngleRatio;
+
+	//The angle subtended by the ascending or descending portion of a tooth
+	circularToothEdgeAngle = circularPitchAngle/2.0f -
+	    circularToothFlatAngle;
+
+	// Increment angles
+	toothTopAngleIncrement = circularToothEdgeAngle;
+	toothDeclineAngleIncrement
+	    = toothTopAngleIncrement + circularToothFlatAngle;
+	toothValleyAngleIncrement
+	    = toothDeclineAngleIncrement + circularToothEdgeAngle;
+
+	// Differential angles for offsetting to the center of tooth's top
+	// and valley
+	toothTopCenterAngle
+	    = toothTopAngleIncrement + circularToothFlatAngle/2.0f;
+	valleyCenterAngle
+	    = toothValleyAngleIncrement +  circularToothFlatAngle/2.0f;
+
+	// Gear start differential angle. All gears are constructed with the
+	// center of a tooth at Z-axis angle = 0.
+	gearStartAngle = -1.0 * toothTopCenterAngle;
+
+	// The radial distance to the root and top of the teeth, respectively
+	rootRadius = pitchCircleRadius - dedendum;
+	outsideRadius = pitchCircleRadius + addendum;
+    
+	// Allow this object to spin. etc.
+	this.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+    }
+
+    /**
+     * Construct a SpurGear;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness  thickness of the gear
+     */
+    public SpurGear(int toothCount, float pitchCircleRadius, float shaftRadius,
+		    float addendum, float dedendum, float gearThickness) {
+	this(toothCount, pitchCircleRadius, shaftRadius, addendum, dedendum,
+	     gearThickness, gearThickness, 0.25f, null);
+    }
+
+    /**
+     * Construct a SpurGear;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness  thickness of the gear
+     * @param look the gear's appearance
+     */
+    public SpurGear(int toothCount, float pitchCircleRadius, float shaftRadius,
+		    float addendum, float dedendum, float gearThickness,
+		    Appearance look) {
+	this(toothCount, pitchCircleRadius, shaftRadius, addendum, dedendum,
+	     gearThickness, gearThickness, 0.25f, look);
+    }
+
+    /**
+     * Construct a SpurGear;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param look the gear's appearance
+     */
+    public SpurGear(int toothCount, float pitchCircleRadius, float shaftRadius,
+		    float addendum, float dedendum, float gearThickness,
+		    float toothTipThickness, Appearance look) {
+	this(toothCount, pitchCircleRadius, shaftRadius, addendum, dedendum,
+	     gearThickness, toothTipThickness, 0.25f, look);
+	}
+
+    /**
+     * Construct a SpurGear;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param toothToValleyAngleRatio the ratio of the angle subtended by the
+     * tooth to the angle subtended by the valley (must be <= .25) 
+     * @param look the gear's appearance object
+     */
+    public SpurGear(int toothCount, float pitchCircleRadius, float shaftRadius,
+		    float addendum, float dedendum, float gearThickness,
+		    float toothTipThickness, float toothToValleyAngleRatio,
+		    Appearance look) {
+
+    this(toothCount, pitchCircleRadius, addendum, dedendum,
+	 toothToValleyAngleRatio);
+
+	// Generate the gear's body disks
+	addBodyDisks(shaftRadius, rootRadius, gearThickness, look);
+	
+	// Generate the gear's interior shaft
+	addCylinderSkins(shaftRadius, gearThickness, InwardNormals, look);
+
+	// Generate the gear's teeth
+	addTeeth(pitchCircleRadius, rootRadius,
+		 outsideRadius, gearThickness, toothTipThickness,
+		 toothToValleyAngleRatio, look);
+    }
+
+    /**
+     * Construct a SpurGear's teeth by adding the teeth shape nodes
+     * @param pitchCircleRadius radius at center of teeth
+     * @param rootRadius distance from pitch circle to top of teeth
+     * @param outsideRadius distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param toothToValleyAngleRatio the ratio of the angle subtended by the
+     * tooth to the angle subtended by the valley (must be <= .25) 
+     * @param look the gear's appearance object
+     */
+    void addTeeth(float pitchCircleRadius, float rootRadius,
+		  float outsideRadius, float gearThickness,
+		  float toothTipThickness, float toothToValleyAngleRatio,
+		  Appearance look) {
+	int index;
+	Shape3D newShape;
+	
+	// Temporaries that store start angle for each portion of tooth facet
+	double toothStartAngle, toothTopStartAngle,
+	    toothDeclineStartAngle, toothValleyStartAngle,
+	    nextToothStartAngle;
+
+	// The x and y coordinates at each point of a facet and at each
+	// point on the gear: at the shaft, the root of the teeth, and
+	// the outer point of the teeth
+	float xRoot0, yRoot0;
+	float xOuter1, yOuter1;
+	float xOuter2, yOuter2;
+	float xRoot3, yRoot3;
+	float xRoot4, yRoot4;
+
+	// The z coordinates for the gear
+	final float frontZ = -0.5f * gearThickness;
+	final float rearZ = 0.5f * gearThickness;
+
+	// The z coordinates for the tooth tip of the gear
+	final float toothTipFrontZ = -0.5f * toothTipThickness;
+	final float toothTipRearZ = 0.5f * toothTipThickness;
+
+	int toothFacetVertexCount;		// #(vertices) per tooth facet
+	int toothFacetCount;			// #(facets) per tooth
+	int toothFaceTotalVertexCount;          // #(vertices) in all teeth
+	int toothFaceStripCount[] = new int[toothCount];
+						// per tooth vertex count
+	int topVertexCount;			// #(vertices) for teeth tops
+	int topStripCount[] = new int[1];	// #(vertices) in strip/strip
+
+	// Front and rear facing normals for the teeth faces
+	Vector3f frontToothNormal = new Vector3f(0.0f, 0.0f, -1.0f);
+	Vector3f rearToothNormal = new Vector3f(0.0f, 0.0f, 1.0f);
+
+	// Normals for teeth tops up incline, tooth top, and down incline
+	Vector3f leftNormal = new Vector3f(-1.0f, 0.0f, 0.0f);
+	Vector3f rightNormal = new Vector3f(1.0f, 0.0f, 0.0f);
+	Vector3f outNormal = new Vector3f(1.0f, 0.0f, 0.0f);
+	Vector3f inNormal = new Vector3f(-1.0f, 0.0f, 0.0f);
+
+	// Temporary variables for storing coordinates and vectors 
+	Point3f coordinate = new Point3f(0.0f, 0.0f, 0.0f);
+	Point3f tempCoordinate1 = new Point3f(0.0f, 0.0f, 0.0f);
+	Point3f tempCoordinate2 = new Point3f(0.0f, 0.0f, 0.0f);
+	Point3f tempCoordinate3 = new Point3f(0.0f, 0.0f, 0.0f);
+	Vector3f tempVector1 = new Vector3f(0.0f, 0.0f, 0.0f);
+	Vector3f tempVector2 = new Vector3f(0.0f, 0.0f, 0.0f);
+
+	/* Construct the gear's front facing teeth facets
+	 *	   0______2
+	 *         /     /\
+	 *        /   /    \
+	 *       /  /       \
+	 *      //___________\
+	 *     1              3
+	 */
+	toothFacetVertexCount = 4;
+	toothFaceTotalVertexCount = toothFacetVertexCount * toothCount;
+	for(int i = 0; i < toothCount; i++)
+	    toothFaceStripCount[i] = toothFacetVertexCount;
+
+	TriangleStripArray frontGearTeeth
+	    = new TriangleStripArray(toothFaceTotalVertexCount,
+				     GeometryArray.COORDINATES
+				     | GeometryArray.NORMALS,
+				     toothFaceStripCount);
+
+	for(int count = 0; count < toothCount; count++) {
+	    index = count * toothFacetVertexCount;
+
+	    toothStartAngle
+		= gearStartAngle + circularPitchAngle * (double)count;
+	    toothTopStartAngle = toothStartAngle + toothTopAngleIncrement;
+	    toothDeclineStartAngle
+		= toothStartAngle + toothDeclineAngleIncrement;
+	    toothValleyStartAngle
+		= toothStartAngle + toothValleyAngleIncrement;
+
+	    xRoot0 = rootRadius * (float)Math.cos(toothStartAngle);
+	    yRoot0 = rootRadius * (float)Math.sin(toothStartAngle);
+	    xOuter1 = outsideRadius * (float)Math.cos(toothTopStartAngle);
+	    yOuter1 = outsideRadius * (float)Math.sin(toothTopStartAngle);
+	    xOuter2 = outsideRadius * (float)Math.cos(toothDeclineStartAngle);
+	    yOuter2 = outsideRadius * (float)Math.sin(toothDeclineStartAngle);
+	    xRoot3 = rootRadius * (float)Math.cos(toothValleyStartAngle);
+	    yRoot3 = rootRadius * (float)Math.sin(toothValleyStartAngle);
+	
+	    tempCoordinate1.set(xRoot0, yRoot0, frontZ);
+	    tempCoordinate2.set(xRoot3, yRoot3, frontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+
+	    tempCoordinate2.set(xOuter1, yOuter1, toothTipFrontZ);
+	    tempVector2.sub(tempCoordinate2, tempCoordinate1);
+
+	    frontToothNormal.cross(tempVector1, tempVector2);
+	    frontToothNormal.normalize();
+
+	    coordinate.set(xOuter1, yOuter1, toothTipFrontZ);
+	    frontGearTeeth.setCoordinate(index, coordinate);
+	    frontGearTeeth.setNormal(index, frontToothNormal);
+
+	    coordinate.set(xRoot0, yRoot0, frontZ);
+	    frontGearTeeth.setCoordinate(index + 1, coordinate);
+	    frontGearTeeth.setNormal(index + 1, frontToothNormal);
+
+	    coordinate.set(xOuter2, yOuter2, toothTipFrontZ);
+	    frontGearTeeth.setCoordinate(index + 2, coordinate);
+	    frontGearTeeth.setNormal(index + 2, frontToothNormal);
+
+	    coordinate.set(xRoot3, yRoot3, frontZ);
+	    frontGearTeeth.setCoordinate(index + 3, coordinate);
+	    frontGearTeeth.setNormal(index + 3, frontToothNormal);
+	}
+	newShape = new Shape3D(frontGearTeeth, look);
+	this.addChild(newShape);
+
+	/* Construct the gear's rear facing teeth facets (Using Quads)
+	 *	   1______2
+	 *         /      \
+	 *        /        \
+	 *       /          \
+	 *      /____________\
+	 *     0              3
+	 */
+	toothFacetVertexCount = 4;
+	toothFaceTotalVertexCount = toothFacetVertexCount * toothCount;
+
+	QuadArray rearGearTeeth
+	    = new QuadArray(toothCount * toothFacetVertexCount,
+			    GeometryArray.COORDINATES
+			    | GeometryArray.NORMALS);
+
+	for(int count = 0; count < toothCount; count++) {
+
+	    index = count * toothFacetVertexCount;
+	    toothStartAngle =
+		gearStartAngle + circularPitchAngle * (double)count;
+	    toothTopStartAngle = toothStartAngle + toothTopAngleIncrement;
+	    toothDeclineStartAngle
+		= toothStartAngle + toothDeclineAngleIncrement;
+	    toothValleyStartAngle = toothStartAngle + toothValleyAngleIncrement;
+	    
+	    xRoot0 = rootRadius * (float)Math.cos(toothStartAngle);
+	    yRoot0 = rootRadius * (float)Math.sin(toothStartAngle);
+	    xOuter1 = outsideRadius * (float)Math.cos(toothTopStartAngle);
+	    yOuter1 = outsideRadius * (float)Math.sin(toothTopStartAngle);
+	    xOuter2 = outsideRadius * (float)Math.cos(toothDeclineStartAngle);
+	    yOuter2 = outsideRadius * (float)Math.sin(toothDeclineStartAngle);
+	    xRoot3 = rootRadius * (float)Math.cos(toothValleyStartAngle);
+	    yRoot3 = rootRadius * (float)Math.sin(toothValleyStartAngle);
+
+	    tempCoordinate1.set(xRoot0, yRoot0, rearZ);
+	    tempCoordinate2.set(xRoot3, yRoot3, rearZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    tempCoordinate2.set(xOuter1, yOuter1, toothTipRearZ);
+	    tempVector2.sub(tempCoordinate2, tempCoordinate1);
+	    rearToothNormal.cross(tempVector2, tempVector1);
+	    rearToothNormal.normalize();
+
+	    coordinate.set(xRoot0, yRoot0, rearZ);
+	    rearGearTeeth.setCoordinate(index, coordinate);
+	    rearGearTeeth.setNormal(index, rearToothNormal);
+
+	    coordinate.set(xOuter1, yOuter1, toothTipRearZ);
+	    rearGearTeeth.setCoordinate(index + 1, coordinate);
+	    rearGearTeeth.setNormal(index + 1, rearToothNormal);
+
+	    coordinate.set(xOuter2, yOuter2, toothTipRearZ);
+	    rearGearTeeth.setCoordinate(index + 2, coordinate);
+	    rearGearTeeth.setNormal(index + 2, rearToothNormal);
+
+	    coordinate.set(xRoot3, yRoot3, rearZ);
+	    rearGearTeeth.setCoordinate(index + 3, coordinate);
+	    rearGearTeeth.setNormal(index + 3, rearToothNormal);
+
+	}
+	newShape = new Shape3D(rearGearTeeth, look);
+	this.addChild(newShape);
+
+	/*
+	 * Construct the gear's top teeth faces   (As seen from above)
+	 *    Root0    Outer1    Outer2    Root3    Root4 (RearZ)
+	 *	0_______3 2_______5 4_______7 6_______9
+	 *      |0     3| |4     7| |8    11| |12   15|
+	 *      |       | |       | |       | |       |
+	 *      |       | |       | |       | |       |
+	 *      |1_____2| |5_____6| |9____10| |13___14|
+	 *      1       2 3       4 5       6 7       8
+	 *    Root0    Outer1    Outer2    Root3    Root4 (FrontZ)
+	 *
+	 * Quad 0123 uses a left normal
+	 * Quad 2345 uses an out normal
+	 * Quad 4567 uses a right normal
+	 * Quad 6789 uses an out normal
+	 */
+	topVertexCount = 8 * toothCount + 2;
+	topStripCount[0] = topVertexCount;
+
+	toothFacetVertexCount = 4;
+	toothFacetCount = 4;
+
+	QuadArray topGearTeeth
+	    = new QuadArray(toothCount * toothFacetVertexCount
+			    * toothFacetCount,
+			    GeometryArray.COORDINATES
+			    | GeometryArray.NORMALS);
+
+	for(int count = 0; count < toothCount; count++) {
+	    index = count * toothFacetCount * toothFacetVertexCount;
+	    toothStartAngle = gearStartAngle +
+		circularPitchAngle * (double)count;
+	    toothTopStartAngle = toothStartAngle + toothTopAngleIncrement;
+	    toothDeclineStartAngle
+		= toothStartAngle + toothDeclineAngleIncrement;
+	    toothValleyStartAngle
+		= toothStartAngle + toothValleyAngleIncrement;
+	    nextToothStartAngle = toothStartAngle + circularPitchAngle;
+
+	    xRoot0 = rootRadius * (float)Math.cos(toothStartAngle);
+	    yRoot0 = rootRadius * (float)Math.sin(toothStartAngle);
+	    xOuter1 = outsideRadius * (float)Math.cos(toothTopStartAngle);
+	    yOuter1 = outsideRadius * (float)Math.sin(toothTopStartAngle);
+	    xOuter2 = outsideRadius * (float)Math.cos(toothDeclineStartAngle);
+	    yOuter2 = outsideRadius * (float)Math.sin(toothDeclineStartAngle);
+	    xRoot3 = rootRadius * (float)Math.cos(toothValleyStartAngle);
+	    yRoot3 = rootRadius * (float)Math.sin(toothValleyStartAngle);
+	    xRoot4 = rootRadius * (float)Math.cos(nextToothStartAngle);
+	    yRoot4 = rootRadius * (float)Math.sin(nextToothStartAngle);
+
+	    // Compute normal for quad 1
+	    tempCoordinate1.set(xRoot0, yRoot0, frontZ);
+	    tempCoordinate2.set(xOuter1, yOuter1, toothTipFrontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    leftNormal.cross(frontNormal, tempVector1);
+	    leftNormal.normalize();
+	    
+	    // Coordinate labeled 0 in the quad
+	    coordinate.set(xRoot0, yRoot0, rearZ);
+	    topGearTeeth.setCoordinate(index, coordinate);
+	    topGearTeeth.setNormal(index, leftNormal);
+
+	    // Coordinate labeled 1 in the quad
+	    coordinate.set(tempCoordinate1);
+	    topGearTeeth.setCoordinate(index + 1, coordinate);
+	    topGearTeeth.setNormal(index + 1, leftNormal);
+
+	    // Coordinate labeled 2 in the quad
+	    topGearTeeth.setCoordinate(index + 2, tempCoordinate2);
+	    topGearTeeth.setNormal(index + 2, leftNormal);
+	    topGearTeeth.setCoordinate(index + 5, tempCoordinate2);
+
+	    // Coordinate labeled 3 in the quad
+	    coordinate.set(xOuter1, yOuter1, toothTipRearZ);
+	    topGearTeeth.setCoordinate(index + 3, coordinate);
+	    topGearTeeth.setNormal(index + 3, leftNormal);
+	    topGearTeeth.setCoordinate(index + 4, coordinate);
+
+	    // Compute normal for quad 2
+	    tempCoordinate1.set(xOuter1, yOuter1, toothTipFrontZ);
+	    tempCoordinate2.set(xOuter2, yOuter2, toothTipFrontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    outNormal.cross(frontNormal, tempVector1);
+	    outNormal.normalize();
+
+	    topGearTeeth.setNormal(index + 4, outNormal);
+	    topGearTeeth.setNormal(index + 5, outNormal);
+
+	    // Coordinate labeled 4 in the quad
+	    topGearTeeth.setCoordinate(index + 6, tempCoordinate2);
+	    topGearTeeth.setNormal(index + 6, outNormal);
+	    topGearTeeth.setCoordinate(index + 9, tempCoordinate2);
+
+	    // Coordinate labeled 5 in the quad
+	    coordinate.set(xOuter2, yOuter2, toothTipRearZ);
+	    topGearTeeth.setCoordinate(index + 7, coordinate);
+	    topGearTeeth.setNormal(index + 7, outNormal);
+	    topGearTeeth.setCoordinate(index + 8, coordinate);
+
+	    // Compute normal for quad 3
+	    tempCoordinate1.set(xOuter2, yOuter2, toothTipFrontZ);
+	    tempCoordinate2.set(xRoot3, yRoot3, frontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    rightNormal.cross(frontNormal, tempVector1);
+	    rightNormal.normalize();
+
+	    topGearTeeth.setNormal(index + 8, rightNormal);
+	    topGearTeeth.setNormal(index + 9, rightNormal);
+
+	    // Coordinate labeled 7 in the quad
+	    topGearTeeth.setCoordinate(index + 10, tempCoordinate2);
+	    topGearTeeth.setNormal(index + 10, rightNormal);
+	    topGearTeeth.setCoordinate(index + 13, tempCoordinate2);
+	
+	    // Coordinate labeled 6 in the quad
+	    coordinate.set(xRoot3, yRoot3, rearZ);
+	    topGearTeeth.setCoordinate(index + 11, coordinate);
+	    topGearTeeth.setNormal(index + 11, rightNormal);
+	    topGearTeeth.setCoordinate(index + 12, coordinate);
+
+	    // Compute normal for quad 4
+	    tempCoordinate1.set(xRoot3, yRoot3, frontZ);
+	    tempCoordinate2.set(xRoot4, yRoot4, frontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    outNormal.cross(frontNormal, tempVector1);
+	    outNormal.normalize();
+
+	    topGearTeeth.setNormal(index + 12, outNormal);
+	    topGearTeeth.setNormal(index + 13, outNormal);
+
+	    // Coordinate labeled 9 in the quad
+	    topGearTeeth.setCoordinate(index + 14, tempCoordinate2);
+	    topGearTeeth.setNormal(index + 14, outNormal);
+
+	    // Coordinate labeled 8 in the quad
+	    coordinate.set(xRoot4, yRoot4, rearZ);
+	    topGearTeeth.setCoordinate(index + 15, coordinate);
+	    topGearTeeth.setNormal(index + 15, outNormal);
+
+	    // Prepare for the loop by computing the new normal
+	    toothTopStartAngle
+		= nextToothStartAngle + toothTopAngleIncrement;
+	    xOuter1 = outsideRadius * (float)Math.cos(toothTopStartAngle);
+	    yOuter1 = outsideRadius * (float)Math.sin(toothTopStartAngle);
+
+	    tempCoordinate1.set(xRoot4, yRoot4, toothTipFrontZ);
+	    tempCoordinate2.set(xOuter1, yOuter1, toothTipFrontZ);
+	    tempVector1.sub(tempCoordinate2, tempCoordinate1);
+	    leftNormal.cross(frontNormal, tempVector1);
+	    leftNormal.normalize();
+	}
+	newShape = new Shape3D(topGearTeeth, look);
+	this.addChild(newShape);
+    }
+
+}
diff --git a/src/GearTest/SpurGearThinBody.java b/src/GearTest/SpurGearThinBody.java
new file mode 100644
index 0000000..76f2415
--- /dev/null
+++ b/src/GearTest/SpurGearThinBody.java
@@ -0,0 +1,185 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.lang.Math.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class SpurGearThinBody extends SpurGear {
+    
+    /**
+     * Construct a SpurGearThinBody;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness  thickness of the gear
+     */
+    public SpurGearThinBody(int toothCount, float pitchCircleRadius,
+			    float shaftRadius, float addendum, float dedendum,
+			    float gearThickness) {
+	this(toothCount, pitchCircleRadius, shaftRadius,
+	     addendum, dedendum, gearThickness, gearThickness, 0.25f, null);
+    }
+
+    /**
+     * Construct a SpurGearThinBody;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness  thickness of the gear
+     * @param look the gear's appearance
+     */
+    public SpurGearThinBody(int toothCount, float pitchCircleRadius,
+			    float shaftRadius, float addendum, float dedendum,
+			    float gearThickness,
+		    Appearance look) {
+	this(toothCount, pitchCircleRadius, shaftRadius,
+	     addendum, dedendum, gearThickness, gearThickness, 0.25f, look);
+    }
+
+    /**
+     * Construct a SpurGearThinBody;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param look the gear's appearance
+     */
+    public SpurGearThinBody(int toothCount, float pitchCircleRadius,
+			    float shaftRadius, float addendum, float dedendum,
+			    float gearThickness, float toothTipThickness,
+			    Appearance look) {
+	this(toothCount, pitchCircleRadius, shaftRadius, addendum,
+	     dedendum, gearThickness, toothTipThickness, 0.25f, look);
+	}
+
+    /**
+     * Construct a SpurGearThinBody;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param toothToValleyRatio ratio of tooth valley to circular pitch
+     * (must be <= .25) 
+     * @param look the gear's appearance object
+     */
+    public SpurGearThinBody(int toothCount, float pitchCircleRadius,
+			    float shaftRadius, float addendum, float dedendum,
+			    float gearThickness, float toothTipThickness,
+			    float toothToValleyAngleRatio, Appearance look) { 
+
+	this(toothCount, pitchCircleRadius, shaftRadius, addendum,
+	     dedendum, gearThickness, toothTipThickness, 0.25f, look,
+	     0.6f * gearThickness, 0.75f * (pitchCircleRadius - shaftRadius));
+    }
+
+    /**
+     * Construct a SpurGearThinBody;
+     * @return a new spur gear that conforms to the input paramters
+     * @param toothCount number of teeth
+     * @param pitchCircleRadius radius at center of teeth
+     * @param shaftRadius radius of hole at center
+     * @param addendum distance from pitch circle to top of teeth
+     * @param dedendum distance from pitch circle to root of teeth
+     * @param gearThickness thickness of the gear
+     * @param toothTipThickness thickness of the tip of the tooth
+     * @param toothToValleyRatio ratio of tooth valley to circular pitch
+     * (must be <= .25)
+     * @param look the gear's appearance object
+     * @param bodyThickness the thickness of the gear body
+     * @param crossSectionWidth the width of the depressed portion of the
+     * gear's body
+     */
+    public SpurGearThinBody(int toothCount, float pitchCircleRadius,
+			    float shaftRadius, float addendum, float dedendum,
+			    float gearThickness, float toothTipThickness,
+			    float toothToValleyAngleRatio, Appearance look,
+			    float bodyThickness, float crossSectionWidth) {
+
+	super(toothCount, pitchCircleRadius, addendum, dedendum,
+	      toothToValleyAngleRatio);
+
+	float diskCrossSectionWidth =
+	    (rootRadius - shaftRadius - crossSectionWidth)/ 2.0f;
+	float outerShaftRadius = shaftRadius + diskCrossSectionWidth;
+	float innerToothRadius = rootRadius - diskCrossSectionWidth;
+
+	// Generate the gear's body disks, first by the shaft, then in
+	// the body and, lastly, by the teeth
+	addBodyDisks(shaftRadius, outerShaftRadius,
+		     gearThickness, look);
+	addBodyDisks(innerToothRadius, rootRadius,
+		     gearThickness, look);
+	addBodyDisks(outerShaftRadius, innerToothRadius,
+		     bodyThickness, look);
+
+	// Generate the gear's "shaft" equivalents the two at the teeth
+	// and the two at the shaft
+	addCylinderSkins(innerToothRadius, gearThickness, InwardNormals, look);
+	addCylinderSkins(outerShaftRadius, gearThickness, OutwardNormals, look);
+	
+	// Generate the gear's interior shaft
+	addCylinderSkins(shaftRadius, gearThickness, InwardNormals, look);
+
+	// Generate the gear's teeth
+	addTeeth(pitchCircleRadius, rootRadius,
+		 outsideRadius, gearThickness, toothTipThickness,
+		 toothToValleyAngleRatio, look);
+    }
+
+}
diff --git a/src/GearTest/build.xml b/src/GearTest/build.xml
new file mode 100644
index 0000000..cbf53a8
--- /dev/null
+++ b/src/GearTest/build.xml
@@ -0,0 +1,66 @@
+<?xml version="1.0"?>
+
+<!--
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+ -->
+
+<project basedir="." default="compile">
+    <target name="compile">
+        <javac debug="true" deprecation="true" destdir="." srcdir=".">
+        </javac>
+    </target>
+
+    <target name="all" depends="compile">
+    </target>
+
+    <target description="Clean all build products." name="clean">
+        <delete>
+            <fileset dir=".">
+                <include name="**/*.class"/>
+            </fileset>
+        </delete>
+    </target>
+
+</project>