1 files changed, 97 insertions, 0 deletions
diff --git a/src/tesseract/objects/ModifyableParticle.java b/src/tesseract/objects/ModifyableParticle.java
new file mode 100644
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--- /dev/null
+++ b/src/tesseract/objects/ModifyableParticle.java
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+package tesseract.objects;
+
+import java.awt.Color;
+
+import javax.media.j3d.Appearance;
+import javax.media.j3d.ColoringAttributes;
+import javax.media.j3d.Material;
+import javax.media.j3d.Shape3D;
+import javax.media.j3d.TransformGroup;
+import javax.vecmath.Color3f;
+import javax.vecmath.Vector3f;
+
+import com.sun.j3d.utils.geometry.Sphere;
+
+/**
+ * A particle object.
+ * @author Phillip Cardon
+ * @author Jesse Morgan
+ */
+public class ModifyableParticle extends PhysicalObject {
+	/**
+	 * 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 color Initial color. Null for random.
+	 */
+	public ModifyableParticle(final Vector3f position, final float mass, final Color3f color, final TransformGroup top, 
+			final TransformGroup bottom) {
+		super(position, mass);
+		bottom.addChild(createShape(color));
+		setShape(top);
+	}
+	
+	/**
+	 * 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 Shape3D 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();
+		Material mat = new Material();
+		mat.setAmbientColor(color);
+		mat.setDiffuseColor(color);
+		appearance.setMaterial(mat);
+		appearance.setColoringAttributes(cAttr);
+		
+		Sphere sphere = new Sphere(RADIUS, Sphere.ENABLE_GEOMETRY_PICKING,
+				DIVISIONS, appearance);
+		*/
+		
+		Sphere sphere = new Sphere(RADIUS, Sphere.ENABLE_GEOMETRY_PICKING,
+				DIVISIONS);
+		Shape3D shape = sphere.getShape();
+		sphere.removeAllChildren();
+		Appearance meshApp = new Appearance();
+		Material surface = new Material();
+		surface.setDiffuseColor(color);
+		meshApp.setMaterial(surface);
+		meshApp.setColoringAttributes(new ColoringAttributes(color,
+						ColoringAttributes.FASTEST));
+		shape.setAppearance(meshApp);
+		return shape;
+	}
+
+	public void setAcceleration(Vector3f accelerator) {
+		accelerator.scale(15f);
+		this.velocity = accelerator;		
+	}
+}