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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 dying particle object.
*
* Particle.java used as code base, parts also taken from ModifyableParticle.
*
* @author Phillip Cardon
* @author Jesse Morgan (base code)
*/
public class DyingParticle extends PhysicalObject {
/**
* Rendered radius of particle.
*/
private static final float RADIUS = .001f;
/**
* Default mass.
*/
private static final float DEFAULT_MASS = .1f;
/**
* Number of divisions in the sphere.
*/
private static final int DIVISIONS = 8;
private static final int DEFAULT_LIFE = 6;
private TransformGroup myTop;
private TransformGroup myBottom;
private Shape3D myShape;
private Color3f myColor;
private int myLife;
/**
* Create a new Particle.
*
* @param position Initial position.
* @param color Initial color. Null for random.
*/
public DyingParticle(final Vector3f position, final float mass, final Color3f color, final TransformGroup top,
final TransformGroup bottom) {
super(position, mass);
myTop = top;
myBottom = bottom;
myBottom.addChild(createShape(color));
myColor = color;
setShape(myTop);
myLife = DEFAULT_LIFE;
}
/**
* 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);
myShape = shape;
myShape.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
return shape;
}
public boolean isDead() {
return myLife <= 0;
}
public void updateState(float duration) {
if (!isDead()) {
myLife--;
super.updateState(duration);
} else {
super.updateState(duration);
this.detach();
}
}
public void setAcceleration(Vector3f accelerator) {
this.velocity = accelerator;
}
}
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