1 files changed, 34 insertions, 0 deletions
diff --git a/src/alden/Sphere.java b/src/alden/Sphere.java
new file mode 100644
index 0000000..df063a3
--- /dev/null
+++ b/src/alden/Sphere.java
@@ -0,0 +1,34 @@
+package alden;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+@SuppressWarnings("restriction")
+public class Sphere extends CollidableObject {
+	protected float radius;
+	
+	public Sphere(float radius, Vector3f position) {
+		this(1, radius, position);
+	}
+	
+	public Sphere(float mass, float radius, Vector3f position) {
+		super(mass);
+		setShape(createShape(radius, 22));
+		this.radius = radius;
+		this.position.set(position);
+		if (inverseMass != 0) {
+			inverseInertiaTensor.m00 = 2f / 5 / inverseMass * radius * radius;
+			inverseInertiaTensor.m11 = inverseInertiaTensor.m00;
+			inverseInertiaTensor.m22 = inverseInertiaTensor.m00;
+			inverseInertiaTensor.invert();
+		}
+		updateTransformGroup();
+	}
+
+	protected Node createShape(float radius, int divisions) {
+		Appearance appearance = new Appearance();
+		Material material = new Material();
+		material.setDiffuseColor(0.7f, 0.7f, 1);
+		appearance.setMaterial(material);
+		return new com.sun.j3d.utils.geometry.Sphere(radius, com.sun.j3d.utils.geometry.Sphere.GENERATE_NORMALS, divisions, appearance);
+	}
+}