/**
* <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
*/
@Override
public BoundingVolume mergeLocal(final BoundingVolume volume) {
if (volume == null) {
return this;
}
switch (volume.getType()) {
case Sphere:
{
final BoundingSphere sphere = (BoundingSphere) volume;
final double temp_radius = sphere.getRadius();
final ReadOnlyVector3 temp_center = sphere.getCenter();
return merge(temp_radius, temp_center, this);
}
case AABB:
{
final BoundingBox box = (BoundingBox) volume;
final Vector3 temp_center = box._center;
_compVect1.set(box.getXExtent(), box.getYExtent(), box.getZExtent());
final double radius = _compVect1.length();
return merge(radius, temp_center, this);
}
case OBB:
{
return mergeLocalOBB((OrientedBoundingBox) volume);
}
default:
return null;
}
}
@Override
public boolean intersectsBoundingBox(final BoundingBox bb) {
if (!Vector3.isValid(_center) || !Vector3.isValid(bb._center)) {
return false;
}
if (Math.abs(bb._center.getX() - getCenter().getX()) < getRadius() + bb.getXExtent()
&& Math.abs(bb._center.getY() - getCenter().getY()) < getRadius() + bb.getYExtent()
&& Math.abs(bb._center.getZ() - getCenter().getZ()) < getRadius() + bb.getZExtent()) {
return true;
}
return false;
}
/**
* <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
*/
@Override
public BoundingVolume merge(final BoundingVolume volume) {
if (volume == null) {
return this;
}
switch (volume.getType()) {
case Sphere:
{
final BoundingSphere sphere = (BoundingSphere) volume;
final double temp_radius = sphere.getRadius();
final ReadOnlyVector3 tempCenter = sphere.getCenter();
final BoundingSphere rVal = new BoundingSphere();
return merge(temp_radius, tempCenter, rVal);
}
case AABB:
{
final BoundingBox box = (BoundingBox) volume;
final Vector3 radVect = new Vector3(box.getXExtent(), box.getYExtent(), box.getZExtent());
final Vector3 tempCenter = box._center;
final BoundingSphere rVal = new BoundingSphere();
return merge(radVect.length(), tempCenter, rVal);
}
case OBB:
{
final OrientedBoundingBox box = (OrientedBoundingBox) volume;
final BoundingSphere rVal = (BoundingSphere) this.clone(null);
return rVal.mergeLocalOBB(box);
}
default:
return null;
}
}