yangzuocheng / earth-3d

Get 3D data from google earth.

Earth 3D

Get 3D data from google earth.

Simple demo - Advanced demo

Description

This project is a combination of the amazing work from retroplasma/earth-reverse-engineering and LexSong/earth-reverse-engineering-utils put together to form a usable library.

Install

Node

yarn add https://github.com/AIFanatic/earth-3d

Browser

<script src="https://cdn.jsdelivr.net/gh/AIFAnatic/earth-3d@latest/dist/earth-3d-bundle.js"></script>

import { NodeManager } from 'https://cdn.jsdelivr.net/gh/AIFAnatic/earth-3d@latest/dist/earth-3d-esm-bundle.js';

Usage

import { NodeManager, LatLonBox } from 'earth-3d';

const filterLatLonBox = new LatLonBox(37.304420471191406, 37.3040771484375, -121.88644409179688, -121.88610076904297);

const nodeValidationHandler = (node) => {
    // Filter nodes based on some criteria
    return LatLonBox.is_overlapping(filterLatLonBox, node.latLonBox);
}

const nodeManager = new NodeManager({
    nodeValidationHandler: nodeValidationHandler
});

setInterval(() => {
    const nodes = nodeManager.get_nodes();
}, 100);

Notes:

• Since nodes are stored in an octree fashion you cannot just filter the "end" node, all the nodes that belong to the same path at a previous level also need to be included.
• Filtering should be performed with caution, having a big LatLonBox will likely result in a temporary ban from google since it will try and pull all the nodes at all levels.
• The nodeValidationHandler method passes a NodeHeader which contains the node LatLonBox and OBB, they can be used to filter nodes based on any criteria.
• When using this library the file ResourcesWorker.js needs to be copied manually into your distribution directory.
• Nodes need to be filtered and fetched asynchronously, therefore, multiple calls to getNodes is expected in order to retrieve all the nodes for a query.

TODO

• Documentation

References

• retroplasma/earth-reverse-engineering
• LexSong/earth-reverse-engineering-utils

Disclaimer

This project has no affiliation with Google or any of its affiliates, there may by a chance that you will get a temporary ban from using google maps services due to the high volume of tiles being streamed.