And we now have a basic 3d world :D

1 files changed, 80 insertions, 0 deletions

diff --git a/src/tesseract/objects/Particle.java b/src/tesseract/objects/Particle.java
new file mode 100644
index 0000000..8307c55
--- /dev/null
+++ b/src/tesseract/objects/Particle.java
@@ -0,0 +1,80 @@
+package tesseract.objects;
+
+import java.awt.Color;
+
+import javax.media.j3d.Appearance;
+import javax.media.j3d.ColoringAttributes;
+import javax.media.j3d.Node;
+import javax.vecmath.Color3f;
+import javax.vecmath.Vector3f;
+
+import com.sun.j3d.utils.geometry.Sphere;
+
+/**
+ * A particle object.
+ * 
+ * @author Jesse Morgan
+ */
+public class Particle extends ForceableObject {
+	/**
+	 * Rendered radius of particle.
+	 */
+	private static final float RADIUS = .004f;
+	
+	/**
+	 * Default mass.
+	 */
+	private static final float DEFAULT_MASS = 1;
+	
+	/**
+	 * Number of divisions in the sphere.
+	 */
+	private static final int DIVISIONS = 8;
+	
+	/**
+	 * Create a new Particle.
+	 * 
+	 * @param position Initial position.
+	 * @param mass Initial mass.
+	 * @param color Initial color. Null for random.
+	 */
+	public Particle(final Vector3f position, final float mass,
+			final Color3f color) {
+		super(position, mass);
+		
+		getTransformGroup().addChild(createShape(color));
+	}
+	
+	/**
+	 * Create a new Particle.
+	 * 
+	 * @param position Initial position.
+	 * @param color Initial color. Null for random.
+	 */
+	public Particle(final Vector3f position, final Color3f color) {
+		this(position, DEFAULT_MASS, color);
+	}
+	
+	/**
+	 * Create a new particle of the give color.
+	 * 
+	 * @param theColor The particle color or null for random.
+	 * @return A sphere to visually represent the particle.
+	 */
+	private Node createShape(final Color3f theColor) {
+		Color3f color = theColor;
+		
+		ColoringAttributes cAttr;
+		
+		if (color == null) {
+			Color randomColor = Color.getHSBColor((float) Math.random(), 1, 1);
+			color = new Color3f(randomColor);
+		}
+		
+		cAttr = new ColoringAttributes(color, ColoringAttributes.FASTEST);
+		Appearance appearance = new Appearance();
+		appearance.setColoringAttributes(cAttr);
+		return new Sphere(RADIUS, 0, DIVISIONS, appearance);
+	}
+
+}