open3d.geometry.Octree 中的函数，用于定位八叉树中包含给定点坐标的叶节点。
octree.locate_leaf_node(point)
point : 一个长度为3的numpy数值向量表示待查找叶节点的三维坐标点。None。import open3d as o3d
import numpy as np
# 定义一个八叉树
octree = o3d.geometry.Octree(max_depth=5, pcd_size=len(pcd.points))
# 生成一个包含大量随机点的点云
pcd = o3d.geometry.PointCloud()
points = np.random.uniform(-1, 1, size=[10000, 3])
pcd.points = o3d.utility.Vector3dVector(points)
# 在八叉树中定位一个点
query_point = np.array([0.4, -0.5, 0.2])
leaf_node_idx = octree.locate_leaf_node(query_point)
if leaf_node_idx is not None:
print(f"Query point is in leaf node {leaf_node_idx}.")
else:
print("Query point is not in the octree.")
locate_leaf_node 之前，应该先调用 initialize 函数，并传入点云数据，构建八叉树。None。