/**
* <code>mergeLocal</code> combines this sphere with a second bounding sphere locally. Altering
* this sphere to contain both the original and the additional sphere volumes;
*
* @param volume the sphere to combine with this sphere.
* @return this
*/
public BoundingVolume mergeLocal(BoundingVolume volume) {
if (volume == null) {
return this;
}
switch (volume.getType()) {
case Sphere:
{
BoundingSphere sphere = (BoundingSphere) volume;
float temp_radius = sphere.getRadius();
Vector3f temp_center = sphere.center;
return merge(temp_radius, temp_center, this);
}
case AABB:
{
BoundingBox box = (BoundingBox) volume;
Vector3f radVect = Vector3f.newInstance();
radVect.set(box.xExtent, box.yExtent, box.zExtent);
Vector3f temp_center = box.center;
float len = radVect.length();
Vector3f.recycle(radVect);
return merge(len, temp_center, this);
}
// case OBB: {
// return mergeOBB((OrientedBoundingBox) volume);
// }
default:
return null;
}
}
/**
* <code>merge</code> combines this sphere with a second bounding sphere. This new sphere contains
* both bounding spheres and is returned.
*
* @param volume the sphere to combine with this sphere.
* @return a new sphere
*/
public BoundingVolume merge(BoundingVolume volume) {
if (volume == null) {
return this;
}
switch (volume.getType()) {
case Sphere:
{
BoundingSphere sphere = (BoundingSphere) volume;
float temp_radius = sphere.getRadius();
Vector3f temp_center = sphere.center;
BoundingSphere rVal = new BoundingSphere();
return merge(temp_radius, temp_center, rVal);
}
case AABB:
{
BoundingBox box = (BoundingBox) volume;
Vector3f radVect = new Vector3f(box.xExtent, box.yExtent, box.zExtent);
Vector3f temp_center = box.center;
BoundingSphere rVal = new BoundingSphere();
return merge(radVect.length(), temp_center, rVal);
}
// case OBB: {
// OrientedBoundingBox box = (OrientedBoundingBox) volume;
// BoundingSphere rVal = (BoundingSphere) this.clone(null);
// return rVal.mergeOBB(box);
// }
default:
return null;
}
}
/*
* (non-Javadoc)
* @see com.jme.bounding.BoundingVolume#intersectsSphere(com.jme.bounding.BoundingSphere)
*/
public boolean intersectsSphere(BoundingSphere bs) {
assert Vector3f.isValidVector(center) && Vector3f.isValidVector(bs.center);
Vector3f vect1 = Vector3f.newInstance();
Vector3f diff = center.subtract(bs.center, vect1);
float rsum = getRadius() + bs.getRadius();
boolean eq = (diff.dot(diff) <= rsum * rsum);
Vector3f.recycle(vect1);
return eq;
}
