Steinmetz NPM | npm.io

Stonemason

steinmetz

Steinmetz (german for stonemason) is a tile generator for mapping applications.

This repository contains the core code that powers derived applications (you can find the completed and planned applications in the README file below.)

Find a full example here to run yourself.

Installation & Use

For programmatic usage (use in your Node.js application) install via NPM. Click here to find the package's page.

npm install --save steinmetz

Objectives

Prioritize objectives. (90443d7)
Utilize GeoJSON for data objects.
Provide a stream of rendered tiles, instead of writing files.
Render points. (3d1c44e)
Render polylines.
Render polygons.
Optimize object rendering.
Complete writing documentation.
Complete examples/wiki.
Support configuration files.
Support WebHooks and/or events for rendering lifecycle.
Support exporting a manifest that would include all rendered tiles, E-Tags, labels, etc.
Research into replacing the canvas dependency with something better, or with something that does not have so many other dependencies (Cairo specifically.)
Render tiles other than 256px squares.

Derivatives

A file writer.
A configurable HTTP server.
A CLI application.

Dependencies

Using typescript for source code.
Using JSONStream for non-blocking JSON reading/writing.
Using sharp for overlapping PNG files.
Using canvas for HTML5-like canvas interaction (this includes following the canvas instructions to install Cairo, too.)
Using upng-js for PNG encoding/decoding.
Using pako for zlib-like inflation/deflation.