Source code for py3dtiles.tilers.pnts.pnts_writer

from __future__ import annotations

from pathlib import Path
import pickle
from typing import Generator, TYPE_CHECKING

import lz4.frame as gzip
import numpy as np
import numpy.typing as npt

import py3dtiles
from py3dtiles.tileset.content import Pnts
from py3dtiles.utils import node_name_to_path

if TYPE_CHECKING:
    from py3dtiles.tilers.node import DummyNode, Node


[docs] def points_to_pnts_file( name: bytes, points: npt.NDArray[np.uint8], out_folder: Path, include_rgb: bool, include_classification: bool, ) -> tuple[int, Path]: """ Write a pnts file from an uint8 data array containing: - points as SemanticPoint.POSITION - if include_rgb, rgb as SemanticPoint.RGB - if include_classification, classification as a single np.uint8 value """ pnts = Pnts.from_points(points, include_rgb, include_classification) node_path = node_name_to_path(out_folder, name, ".pnts") if node_path.exists(): raise FileExistsError(f"{node_path} already written") pnts.save_as(node_path) return pnts.body.feature_table.nb_points(), node_path
[docs] def node_to_pnts( name: bytes, node: Node | DummyNode, out_folder: Path, include_rgb: bool, include_classification: bool, ) -> int: points = py3dtiles.tilers.node.Node.get_points( node, include_rgb, include_classification ) point_nb, _ = points_to_pnts_file( name, points, out_folder, include_rgb, include_classification ) return point_nb
[docs] def run( data: bytes, folder: Path, write_rgb: bool, write_classification: bool, ) -> Generator[int, None, None]: # we can safely write the .pnts file if len(data) > 0: root = pickle.loads(gzip.decompress(data)) total = 0 for name in root: node = py3dtiles.tilers.node.DummyNode(pickle.loads(root[name])) total += node_to_pnts(name, node, folder, write_rgb, write_classification) yield total