loaders.gl | Tile converter

The tile-converter is a command line utility (CLI) for two-way batch conversion between the OGC 3D Tiles and the I3S formats. It can load the tileset to be converted directly from an URL.

Installation

$ npm i @loaders.gl/tile-converter

Installing @loaders.gl/tile-converter makes the converter command line tool available. It can be run using npx.

$ npx tile-converter --install-dependencies

$ npx tile-converter --input-type <I3S | 3DTILES> --tileset <tileset> --name <tileset name> [--output <output folder>] [--draco] [--max-depth 4] [--slpk] [--7zExe <path/to/7z.exe>] [--token <ION token>] [--egm <pat/to/*.pgm>]

$ npx tile-converter --help

Options

Option	3DTiles to I3S conversion	I3S to 3DTiles conversion	Description
install-dependencies			Run the script for installing dependencies. Run this options separate from others. Now "*.pgm" file installation is implemented
input-type	*	*	"I3S" - for I3S to 3DTiles conversion, "3DTILES" for 3DTiles to I3S conversion
tileset	*	*	"tileset.json" file (3DTiles) / "http://..../SceneServer/layers/0" resource (I3S)
output	*	*	Output folder. This folder will be created by converter if doesn't exist. It is relative to the converter path. Default: "data" folder
name	*	*	Tileset name. This option is used for naming in resulting json resouces and for resulting path/*.slpk file naming
max-depth	*	*	Maximal depth of the hierarchical tiles tree traversal, default: infinite
slpk	*		Whether the converter generate *.slpk (Scene Layer Packages) I3S output file
7zExe	*		location of 7z.exe archiver to create slpk on Windows OS, default: "C:\Program Files\7-Zip\7z.exe"
egm	*	*	location of the Earth Gravity Model (*.pgm) file to convert heights from ellipsoidal to gravity-related format, default: "./deps/egm2008-5.pgm". A model file can be loaded from GeographicLib https://geographiclib.sourceforge.io/html/geoid.html
token	*		Token for Cesium ION tilesets authentication
no-draco	*		Disable draco compression for geometry. Default: not set
help	*	*	Show the converter tool options list

Running local server to handle i3s layer.

After conversion there are new i3s layers in output ("data" in example) directory.

Run it with the local web server from project directory:

$ I3sLayerPath="./data/CairoLayer" DEBUG=i3s-server:* npx i3s-server

Show converted layer on a map.

open https://loaders.gl/examples/i3s?url=http://localhost/SceneServer/layers/0