From 76d368d064273090cd28556cc1d59562e468bb6a Mon Sep 17 00:00:00 2001
From: Steve <steveb9@u.washington.edu>
Date: Tue, 15 Mar 2011 15:18:33 +0000
Subject: starting blimp

---
 src/tesseract/objects/blimp/Blimp.java | 91 ++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 src/tesseract/objects/blimp/Blimp.java

(limited to 'src/tesseract/objects/blimp/Blimp.java')

diff --git a/src/tesseract/objects/blimp/Blimp.java b/src/tesseract/objects/blimp/Blimp.java
new file mode 100644
index 0000000..a543e02
--- /dev/null
+++ b/src/tesseract/objects/blimp/Blimp.java
@@ -0,0 +1,91 @@
+package tesseract.objects.blimp;
+
+import java.awt.Color;
+
+import javax.media.j3d.Appearance;
+import javax.media.j3d.BranchGroup;
+import javax.media.j3d.ColoringAttributes;
+import javax.media.j3d.Material;
+import javax.media.j3d.Transform3D;
+import javax.media.j3d.TransformGroup;
+import javax.vecmath.Color3f;
+import javax.vecmath.Matrix3f;
+import javax.vecmath.Vector3f;
+
+import tesseract.objects.PhysicalObject;
+
+import com.sun.j3d.utils.geometry.Sphere;
+
+public class Blimp extends PhysicalObject {
+
+	
+	/**
+	 * Default mass.
+	 */
+	//private static final float DEFAULT_MASS = Float.POSITIVE_INFINITY;
+	private static final float DEFAULT_MASS = 10;
+	/**
+	 * Create a new Blimp.
+	 * 
+	 * @param position Initial position.
+	 * @param radius a float for the size of the base sphere.
+	 * @param theColor of object.
+	 */
+	public Blimp(final Vector3f position, final float radius) {
+		super(position, DEFAULT_MASS);
+		final float rSq = radius * radius;
+		final float a = 1.0f;
+		final float b = 1.0f;
+		final float c = 2f;
+		
+		
+		//setShape(createDefaultEllipsoid(radius, a, b, c));
+		
+		if (inverseMass != 0) {
+			inverseInertiaTensor.m00 = 1f / 5 / inverseMass * (b * rSq + c * rSq);
+			inverseInertiaTensor.m11 = 1f / 5 / inverseMass * (a * rSq + c * rSq);
+			inverseInertiaTensor.m22 = 1f / 5 / inverseMass * (a * rSq + b * rSq);
+			inverseInertiaTensor.invert();
+		}
+		updateTransformGroup();
+	}
+	
+	/**
+	 * This creates a default Ellipsoid for the 2 argument constructor.
+	 * @param radius the size of the ellipsoid
+	 * @param a float in the ellipsoid formula.
+	 * @param b float in the ellipsoid formula.
+	 * @param c float in the ellipsoid formula.
+	 * @return TransformGroup with the shape.
+	 */
+	/*private TransformGroup createDefaultEllipsoid(final float radius, final float a,
+			final float b, final float c) {
+		
+		BranchGroup blimp = new BranchGroup();
+		
+		//blimp node
+		Appearance meshApp = new Appearance();
+		Material surface = new Material();
+		surface.setDiffuseColor(new Color3f(1f, 1f, 1f));
+		meshApp.setMaterial(surface);
+		meshApp.setColoringAttributes(new ColoringAttributes(new Color3f(1f, 1f, 1f),
+				ColoringAttributes.NICEST));
+		Sphere sphere = new Sphere(radius, new Sphere().getPrimitiveFlags() | Sphere.ENABLE_GEOMETRY_PICKING,
+				30, meshApp);
+		Transform3D tmp = new Transform3D();
+		tmp.set(new Matrix3f(a, 0.0f, 0.0f, 0.0f, b, 0.0f, 0.0f, 0.0f, c));
+		TransformGroup tgBlimp = new TransformGroup(tmp);
+		tgBlimp.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
+		tgBlimp.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
+		tgBlimp.addChild(sphere);
+		
+		//box node
+		//Box box = new Box(2f, .1f, .2f, .3f, new Vector3f(0f,-.05f, 0f), new Color3f(1f, 1f, 1f));
+		
+		
+		
+		
+		
+		//return tg;
+	}*/
+}
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