/*!
Updates \a path to be the same path as this path.
*/
void
SoLightPath::makeTempPath(SoTempPath *path) const
{
const int n = this->indices.getLength();
SoNode *node = this->headnode;
path->setHead(node);
for (int i = 1; i < n; i++) {
int childidx = this->indices[i];
// check validity of path, return if invalid
SoChildList *children = node->getChildren();
if (children == NULL || childidx < 0 || childidx >= children->getLength()) break;
node = (*children)[childidx];
path->append(childidx); // childidx should be ok
}
}
/*!
Returns the indexth node in path.
*/
SoNode *
SoLightPath::getNode(const int index) const
{
#if COIN_DEBUG && 1 // debug
if (index < 0 || index >= this->indices.getLength()) {
SoDebugError::postInfo("SoLightPath::getNode",
"index %d out of bounds", index);
}
#endif // debug
SoNode *node = this->headnode;
for (int i = 1; i < index; i++) {
int childidx = this->indices[i];
SoChildList *children = node->getChildren();
node = NULL;
if (children == NULL || childidx < 0 || childidx >= children->getLength()) break;
node = (*children)[childidx];
}
return node;
}