repository·develop·Indexed 21 days ago
https://github.com/potree/potreeconverterPotreeConverter is a tool that generates octree Level of Detail (LOD) structures from massive point clouds to enable real-time streaming and rendering in web browsers via Potree or desktop applications. Version 2.0 features high-performance streaming, improved speed on SSDs, and reduced file system overhead. The tool supports Poisson-disk and random sampling strategies via a CLI.
GeoPackage JS is a JavaScript implementation of the OGC GeoPackage specification. It allows for reading GeoPackage files in both browser and Node.js environments.
Environment-specific implementations:
sql.js for reading GeoPackages and HTML5 Canvas for rendering tiles.node-sqlite3 for reading GeoPackages and PureImage for rendering tiles.PotreeConverter 2.0 is a complete rewrite designed for high-performance streaming of massive point clouds.
Key improvements over version 1.7 include:
int64 and uint64 is in development).jsTree is an open-source jQuery plugin used to create interactive trees. It is highly configurable, themeable, and extendable. Key features include:
Once a GeoPackage instance is connected, you can access tile tables. Use getTileTables to list tables and getTileDaoWithTableName to get a Data Access Object (DAO) for a specific table. With the DAO, you can use GeoPackageTileRetriever to draw tiles directly onto an HTML5 Canvas or retrieve them as Base64 data URLs.
// get the tile table names
geopackage.getTileTables(function(err, tileTableNames) {
// get the info for the first table
geoPackage.getTileDaoWithTableName(tileTableNames[0], function(err, tileDao) {
// draw a tile into a canvas for an XYZ tile
var canvas = canvasFromSomewhere;
var gpr = new GeoPackageTileRetriever(tileDao, 256, 256);
var x = 0;
var y = 0;
var zoom = 0;
gpr.drawTileIn(x, y, zoom, canvas, function() {
console.log('Tile drawn');
});
// or get a tile base64 data URL for an XYZ tile
gpr.getTile(x, y, zoom, function(err, tileBase64DataURL) {
console.log('got the base64 data url');
});
});
});By default, TweenJS uses the Ticker class from EaselJS to drive animations. This directory includes a minified version of EaselJS specifically to provide this Ticker class.
If you want to avoid including the full EaselJS library, you have two options:
Ticker class from the official EaselJS GitHub repository.To access vector data, use getFeatureTables to find available feature tables and getFeatureDaoWithTableName to obtain a feature DAO. You can then iterate through features using featureDao.queryForEach. For each row, you can retrieve the geometry and convert it to GeoJSON using geometry.toGeoJSON().
// get the feature table names
geopackage.getFeatureTables(function(err, featureTableNames) {
// get the info for the first table
geoPackage.getFeatureDaoWithTableName(featureTableNames[0], function(err, featureDao) {
// query for all features
featureDao.queryForEach(function(err, row, rowDone) {
var feature = featureDao.getFeatureRow(row);
var geometry = currentRow.getGeometry();
if (geometry) {
var geom = geometry.geometry;
var geoJson = geometry.geometry.toGeoJSON();
// ... process geoJson
}
rowDone();
});
});
});JSON5 is a superset of JSON that adds several ECMAScript 5.1 features to make it more human-readable:
0x...), leading/trailing decimal points (.867, 867.), positive/negative infinity, NaN, and explicit plus signs (+1).//) and multi-line (/* ... */) comments.{
// comments
unquoted: 'and you can quote me on that',
singleQuotes: 'I can use "double quotes" here',
lineBreaks: "Look, Mom! \\nNo \\n's!",
hexadecimal: 0xdecaf,
leadingDecimalPoint: .8675309,
andTrailing: 8675309.,
positiveSign: +1,
trailingComma: 'in objects',
andIn: ['arrays',],
"backwardsCompatible": "with JSON",
}To use jsTree, you must first include all necessary files (jQuery and the jsTree library) in your project. Once included, you can populate the tree using several methods:
You can include Spectrum directly in your HTML using the cdnjs CDN links:
<script src="https://cdnjs.cloudflare.com/ajax/libs/spectrum/1.8.0/spectrum.min.js"></script>
<link rel="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/spectrum/1.8.0/spectrum.min.css">To run the development version, you must have Grunt installed. After cloning the repository, follow these steps:
npm install -g grunt-clinpm installgruntgrunt buildnpm install -g grunt-cli
npm install
# runs jshint and the unit test suite
grant
# runs jshint, the unit test suite, and builds a minified version of the file.
grant buildTo acquire the LASzip DLL, the LASlib source code, and the associated binaries, download the LAStools distribution from the official websites. The distribution includes example LAZ files and the necessary components for integration.
http://laszip.org/
http://lastools.org/
http://rapidlasso.com/LAStools/The brotli command-line tool provides lossless compression and decompression. It operates in three modes:
.br) to the filename.--decompress or -d. It removes the suffix from the filename to create the target file. The command unbrotli is a shortcut for brotli --decompress.--test or -t. This mode decompresses the data to check for errors but discards the output instead of writing it to stdout.By default, source files are preserved. Use --rm or -j to remove source files after processing.
# Compress a file
brotli input.txt
# Decompress a file
brotli --decompress input.txt.br
# OR
unbrotli input.txt.br
# Test file integrity
brotli --test input.txt.br