Added package tesseract.tests

Added Ellipsoid class to tesseract.objects
Added EggTest to tesseract.tests

2 files changed, 203 insertions, 0 deletions

diff --git a/src/tesseract/objects/Ellipsoid.java b/src/tesseract/objects/Ellipsoid.java
new file mode 100644
index 0000000..e44d5ea
--- /dev/null
+++ b/src/tesseract/objects/Ellipsoid.java
@@ -0,0 +1,103 @@
+/*

+ * TCSS 491 Computational Worlds

+ * Author Steve Bradshaw

+ */

+package tesseract.objects;

+

+import javax.media.j3d.Appearance;

+import javax.media.j3d.Group;

+import javax.media.j3d.Transform3D;

+import javax.media.j3d.TransformGroup;

+import javax.vecmath.Matrix3f;

+

+import com.sun.j3d.utils.geometry.Sphere;

+

+/**

+ * This class creates an ellipsoid using the formula 

+ * (x/a)^2  +  (y/b)^2  +  (z/c)^2 = 1 using a matrix3f transformation

+ * on a basic Sphere.  This class sets 'a' to a constant 1.0 and allows

+ * 'b' and 'c'  to alter the ellipsoid's shape along with the radius field 

+ * Sphere.  Since this is a sphere, the normals are already calculated.

+ * 

+ * @author Steve Bradshaw

+ * @version 1 Feb 2011

+ */

+public class Ellipsoid extends Sphere {

+	

+	/**

+	 *  The b in the formula (x/a)^2 + (y/b)^2 + (z/c)^2 = 1.

+	 */

+	private float my_b;

+	

+	/**

+	 *  The c in the formula (x/a)^2 + (y/b)^2 + (z/c)^2 = 1.

+	 */

+	private float my_c;

+	

+	/**

+	 *  The Group containing the new ellipsoid.

+	 */

+	private TransformGroup my_ellipsoidTG;

+	

+	/**

+	 * Constructor similar to sphere but with the additions of b and c to change

+	 * the shape.

+	 * This constructor does not have the Appearance as an argument.

+	 * 

+	 * @param radius the radius of the ellipsoid if in sphere form

+	 * @param primflags an int

+	 * @param divisions an int 

+	 * @param b to change the shape of the ellipsoid in the y direction

+	 * @param c to change the shape of the ellipsoid in the z direction

+	 */

+	public Ellipsoid(final float radius, final int primflags,

+			final int divisions, final float b, final float c) {

+		super(radius, primflags, divisions);

+		

+		my_b = b;

+		my_c = c;

+		my_ellipsoidTG = new TransformGroup();

+		createGeometry();

+	}

+	

+	/**

+	 * Constructor similar to sphere but with the additions of b and c to change

+	 * the shape. This constructor adds Appearance as an argument.

+	 * 

+	 * @param radius the radius of the ellipsoid if in sphere form

+	 * @param primflags an int

+	 * @param divisions an int

+	 * @param appearance brings an Appearance object for material, color etc.

+	 * @param b to change the shape of the ellipsoid in the y direction

+	 * @param c to change the shape of the ellipsoid in the z direction

+	 */

+	public Ellipsoid(final float radius, final int primflags,

+			final int divisions, final Appearance appearance,

+			final float b, final float c) {

+		super(radius, primflags, divisions, appearance);

+		

+		my_b = b;

+		my_c = c;

+		my_ellipsoidTG = new TransformGroup();

+		createGeometry();

+	}

+	

+	/*

+	 * This private method transforms a sphere using a 3D Matrix

+	 */

+	private void createGeometry() {

+		Transform3D tmp = new Transform3D();

+		tmp.set(new Matrix3f(1.0f, 0.0f, 0.0f, 0.0f, my_b, 0.0f, 0.0f, 0.0f, my_c));

+		my_ellipsoidTG.setTransform(tmp);

+		my_ellipsoidTG.addChild(this);

+	}

+	

+	/**

+	 * This method is the getter to get custom ellipsoid

+	 * 

+	 * @return Group containing the transformation of the sphere

+	 */

+	public Group getEllipsoid() {

+		return my_ellipsoidTG;

+	}

+}

diff --git a/src/tesseract/tests/EggTest.java b/src/tesseract/tests/EggTest.java
new file mode 100644
index 0000000..d8ad831
--- /dev/null
+++ b/src/tesseract/tests/EggTest.java
@@ -0,0 +1,100 @@
+/*

+ * This is just a test for the Ellipsoid

+ * Author:  Steve Bradshaw

+ */

+package tesseract.tests;

+

+import com.sun.j3d.utils.geometry.*;

+import com.sun.j3d.utils.universe.*;

+

+import java.awt.*;

+import java.awt.event.*;

+import javax.media.j3d.*;

+import javax.swing.*;

+import javax.vecmath.*;

+

+import tesseract.objects.Ellipsoid;

+

+@SuppressWarnings("restriction")

+public class EggTest {

+	private JFrame appFrame;

+	private MouseEvent lastDragEvent;

+	private Transform3D icc3D;

+	private TransformGroup iccTG;

+	

+	public static void main(String[] args) {

+		SwingUtilities.invokeLater(new Runnable() {

+			public void run() {

+				(new EggTest()).createAndShowGUI();

+			}

+		});

+	}

+

+	private void createAndShowGUI() {

+		BranchGroup scene = new BranchGroup();

+		Light light = new DirectionalLight(new Color3f(1f, 1f, 1f), new Vector3f(-1f, -1f, -1f));

+		light.setInfluencingBounds(new BoundingSphere());

+		scene.addChild(light);

+		light = new DirectionalLight(new Color3f(0.3f, 0.1f, 0.1f), new Vector3f(1f, 0f, 0f));

+		light.setInfluencingBounds(new BoundingSphere());

+		scene.addChild(light);

+		icc3D = new Transform3D();

+		iccTG = new TransformGroup();

+		iccTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

+		iccTG.addChild(createEllipsoid());

+		scene.addChild(iccTG);

+		scene.compile();

+		

+		GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();

+		Canvas3D canvas3D = new Canvas3D(config);

+		SimpleUniverse simpleU = new SimpleUniverse(canvas3D);

+		simpleU.getViewingPlatform().setNominalViewingTransform();

+		simpleU.addBranchGraph(scene);

+

+		appFrame = new JFrame("Java 3D Demo 6");

+		appFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

+		appFrame.add(canvas3D);

+		appFrame.pack();

+		if (Toolkit.getDefaultToolkit().isFrameStateSupported(JFrame.MAXIMIZED_BOTH))

+			appFrame.setExtendedState(appFrame.getExtendedState() | JFrame.MAXIMIZED_BOTH);

+		

+		canvas3D.addMouseMotionListener(new MouseMotionAdapter() {

+			public void mouseDragged(MouseEvent e) {

+				if (lastDragEvent != null) {

+					Transform3D newRotate = new Transform3D();

+					newRotate.rotX(Math.toRadians(e.getY() - lastDragEvent.getY()) / 2);

+					Transform3D tmp = new Transform3D();

+					tmp.rotY(Math.toRadians(e.getX() - lastDragEvent.getX()) / 2);

+					newRotate.mul(tmp);

+					newRotate.mul(icc3D);

+					icc3D = newRotate;

+					iccTG.setTransform(icc3D);

+				}

+				lastDragEvent = e;

+			}

+			public void mouseMoved(MouseEvent e) {

+				lastDragEvent = null;

+			}});

+		appFrame.setVisible(true);

+	}

+	

+	private Group createEllipsoid() {

+		

+		TransformGroup ellipsoidTG = new TransformGroup();

+		Appearance eApp = new Appearance();

+		Material eggMat = new Material();

+		eggMat.setDiffuseColor(1f, 0f, 1f);

+		eApp.setMaterial(eggMat);

+		eApp.setColoringAttributes(new ColoringAttributes(0f, 1f, 1f, ColoringAttributes.ALLOW_COLOR_WRITE));

+		Ellipsoid egg = new Ellipsoid(0.2f, new Sphere().getPrimitiveFlags(), 100, eApp, 0.8f, 1.5f);

+		

+		//unlike the basic sphere or cube etc., you must use a getter or will throw exception

+		ellipsoidTG.addChild(egg.getEllipsoid());

+		

+		BranchGroup bg = new BranchGroup();

+		bg.addChild(ellipsoidTG);

+		

+		return bg;

+	}

+

+}