/**
* <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 the world transform of this Spatial in the most efficient manner possible. */
void checkDoTransformUpdate() {
if ((refreshFlags & RF_TRANSFORM) == 0) {
return;
}
if (parent == null) {
worldTransform.set(localTransform);
refreshFlags &= ~RF_TRANSFORM;
} else {
TempVars vars = TempVars.get();
Spatial[] stack = vars.spatialStack;
Spatial rootNode = this;
int i = 0;
while (true) {
Spatial hisParent = rootNode.parent;
if (hisParent == null) {
rootNode.worldTransform.set(rootNode.localTransform);
rootNode.refreshFlags &= ~RF_TRANSFORM;
i--;
break;
}
stack[i] = rootNode;
if ((hisParent.refreshFlags & RF_TRANSFORM) == 0) {
break;
}
rootNode = hisParent;
i++;
}
vars.release();
for (int j = i; j >= 0; j--) {
rootNode = stack[j];
// rootNode.worldTransform.set(rootNode.localTransform);
// rootNode.worldTransform.combineWithParent(rootNode.parent.worldTransform);
// rootNode.refreshFlags &= ~RF_TRANSFORM;
rootNode.updateWorldTransforms();
}
}
}