OctreeElementPointer AddEntityOperator::possiblyCreateChildAt(const OctreeElementPointer& element, int childIndex) {
// If we're getting called, it's because there was no child element at this index while recursing.
// We only care if this happens while still searching for the new entity location.
// Check to see if
if (!_foundNew) {
float childElementScale = element->getAACube().getScale() / 2.0f; // all of our children will be half our scale
// if the scale of our desired cube is smaller than our children, then consider making a child
if (_newEntityBox.getLargestDimension() <= childElementScale) {
int indexOfChildContainingNewEntity = element->getMyChildContaining(_newEntityBox);
if (childIndex == indexOfChildContainingNewEntity) {
return element->addChildAtIndex(childIndex);
}
}
}
return NULL;
}
OctreeElementPointer UpdateEntityOperator::possiblyCreateChildAt(OctreeElementPointer element, int childIndex) {
// If we're getting called, it's because there was no child element at this index while recursing.
// We only care if this happens while still searching for the new entity location.
// Check to see if
if (!_foundNew) {
float childElementScale = element->getScale() / 2.0f; // all of our children will be half our scale
// Note: because the entity's bounds might have been clamped to the domain. We want to check if the
// bounds of the clamped box would fit in our child elements. It may be the case that the actual
// bounds of the element would hang outside of the child elements cells.
bool entityWouldFitInChild = _newEntityBox.getLargestDimension() <= childElementScale;
// if the scale of our desired cube is smaller than our children, then consider making a child
if (entityWouldFitInChild) {
int indexOfChildContainingNewEntity = element->getMyChildContaining(_newEntityBox);
if (childIndex == indexOfChildContainingNewEntity) {
return element->addChildAtIndex(childIndex);;
}
}
}
return NULL;
}
