/**
* <code>updateGeometricState</code> updates the lightlist, computes the world transforms, and
* computes the world bounds for this Spatial. Calling this when the Spatial is attached to a node
* will cause undefined results. User code should only call this method on Spatials having no
* parent.
*
* @see Spatial#getWorldLightList()
* @see Spatial#getWorldTransform()
* @see Spatial#getWorldBound()
*/
public void updateGeometricState() {
// assume that this Spatial is a leaf, a proper implementation
// for this method should be provided by Node.
// NOTE: Update world transforms first because
// bound transform depends on them.
if ((refreshFlags & RF_LIGHTLIST) != 0) {
updateWorldLightList();
}
if ((refreshFlags & RF_TRANSFORM) != 0) {
updateWorldTransforms();
}
if ((refreshFlags & RF_BOUND) != 0) {
updateWorldBound();
}
assert refreshFlags == 0;
}
/** Computes this Spatial's world bounding volume in the most efficient manner possible. */
void checkDoBoundUpdate() {
if ((refreshFlags & RF_BOUND) == 0) {
return;
}
checkDoTransformUpdate();
// Go to children recursively and update their bound
if (this instanceof Node) {
Node node = (Node) this;
int len = node.getQuantity();
for (int i = 0; i < len; i++) {
Spatial child = node.getChild(i);
child.checkDoBoundUpdate();
}
}
// All children's bounds have been updated. Update my own now.
updateWorldBound();
}