How to use

DirectionalLight

in

javax.media.j3d

public void setBounds(final Bounds _b) {
 l_.setInfluencingBounds(_b);
}

public void setVisible(final boolean _visible) {
 l_.setEnable(_visible);
 visible_ = _visible;
}

public BoundingSphere getLightBounds() {
 return (BoundingSphere) l_.getInfluencingBounds();
}

/**
 * Adds a directional light of color col which shines in the direction vector (x, y, z)
 */
public static Light directionalLight (double x, double y, double z, Color col) {
  DirectionalLight light = new DirectionalLight();
  light.setColor(new Color3f(col));
  light.setInfluencingBounds(INFINITE_BOUNDS);
  light.setCapability(DirectionalLight.ALLOW_STATE_WRITE);
  light.setCapability(DirectionalLight.ALLOW_COLOR_WRITE);
  light.setEnable(true);
  BranchGroup bg = createBranchGroup();
  TransformGroup tg = createTransformGroup();
  tg.addChild(light);
  bg.addChild(tg);
  lightGroup.addChild(bg);
  Light l = new Light(bg, tg, light);
  l.setDirection(new Vector3D(x, y, z));
  return l;
}

public BLumiereDirectionnelle(final Vector3f _vecteur, final Color _couleur) {
 couleur_ = _couleur;
 direction_ = _vecteur;
 l_ = new DirectionalLight(new Color3f(_couleur), _vecteur);
 l_.setCapability(Light.ALLOW_STATE_WRITE);
 l_.setCapability(Light.ALLOW_STATE_READ);
 l_.setCapability(Light.ALLOW_COLOR_WRITE);
 l_.setCapability(Light.ALLOW_COLOR_READ);
 l_.setCapability(DirectionalLight.ALLOW_DIRECTION_WRITE);
 l_.setCapability(DirectionalLight.ALLOW_DIRECTION_READ);
 l_.setCapability(Node.ALLOW_BOUNDS_READ);
 l_.setCapability(Node.ALLOW_BOUNDS_WRITE);
 l_.setCapability(Light.ALLOW_INFLUENCING_BOUNDS_READ);
 l_.setCapability(Light.ALLOW_INFLUENCING_BOUNDS_WRITE);
 setCapability(ALLOW_AUTO_COMPUTE_BOUNDS_READ);
 setCapability(ALLOW_AUTO_COMPUTE_BOUNDS_READ);
 l_.setInfluencingBounds(new BoundingSphere(new Point3d(), 100));
 for (int i = 18; i < 20; i++) {
  l_.setCapability(i);
 }
 addChild(l_);
 setName("Direction");
}

DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
lgt1.setInfluencingBounds(bounds);
objRoot.addChild(lgt1);
DirectionalLight lgt2 = new DirectionalLight(lColor2, lDir2);
lgt2.setInfluencingBounds(bounds);
objRoot.addChild(lgt2);

public void setIntensite(final double _intensite) {
 intensite_ = _intensite;
 float red, green, blue;
 red = (float) (couleur_.getRed() * intensite_ / 255);
 green = (float) (couleur_.getGreen() * intensite_ / 255);
 blue = (float) (couleur_.getBlue() * intensite_ / 255);
 try {
  l_.setColor(new Color3f(red, green, blue));
 } catch (final Exception ex) {}
}

/**
 * Adds a directional light of color col which shines in the direction vector (x, y, z)
 */
public static Light directionalLight (double x, double y, double z, Color col) {
  DirectionalLight light = new DirectionalLight();
  light.setColor(new Color3f(col));
  light.setInfluencingBounds(INFINITE_BOUNDS);
  light.setCapability(DirectionalLight.ALLOW_STATE_WRITE);
  light.setCapability(DirectionalLight.ALLOW_COLOR_WRITE);
  light.setEnable(true);
  BranchGroup bg = createBranchGroup();
  TransformGroup tg = createTransformGroup();
  tg.addChild(light);
  bg.addChild(tg);
  lightGroup.addChild(bg);
  Light l = new Light(bg, tg, light);
  l.setDirection(new Vector3D(x, y, z));
  return l;
}

Color3f lColor2 = new Color3f(1.0f, 1.0f, 1.0f);
Vector3f lDir2  = new Vector3f(-1.0f, 0.0f, -1.0f);
DirectionalLight lgt2 = new DirectionalLight(lColor2, lDir2);
AmbientLight ambient = new AmbientLight(lColor1);
lgt2.setInfluencingBounds(bounds);
ambient.setInfluencingBounds(bounds);
objRoot.addChild(lgt2);

public void setCouleur(final Color _couleur) {
 couleur_ = _couleur;
 l_.setColor(new Color3f(couleur_));
}