repository·develop·Indexed 26 days ago
https://github.com/potree/potreeA WebGL point cloud viewer, version 1.8.0.
jsTree is an open-source jQuery plugin that provides interactive trees. It is highly configurable, themable, and extendable. Key features include:
content-box and border-box CSS box models.You can use three.js in your project by either downloading the minified library and including it via a <script> tag, or by installing it as a module.
To include the minified version directly in your HTML:
<script src="js/three.min.js"></script><script src="js/three.min.js"></script>In Node.js, GeoPackage JS uses node-sqlite3 for reading GeoPackages and PureImage for tile rendering. You can open a GeoPackage file using GeoPackageAPI.open(filename, callback) and then interact with tile and feature tables.
var GeoPackageAPI = require('@ngageoint/geopackage')
, GeoPackageManager = GeoPackageAPI.GeoPackageManager
, GeoPackageConnection = GeoPackageAPI.GeoPackageConnection
, GeoPackageTileRetriever = GeoPackageAPI.GeoPackageTileRetriever;
GeoPackageAPI.open(filename, function(err, geoPackage) {
// Now you can operate on the GeoPackage
// get the tile table names
geoPackage.getTileTables(function(err, tileTableNames) {
// tileTableNames is an array of all tile table names
// get the info for the first table
geoPackage.getTileDaoWithTableName(tileTableNames[0], function(err, tileDao) {
geoPackage.getInfoForTable(tileDao, function(err, info) {
// do something with the tile table info
});
// 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;
console.time('Draw tile ' + x + ', ' + y + ' zoom: ' + zoom);
gpr.drawTileIn(x, y, zoom, canvas, function() {
console.timeEnd('Draw tile ' + x + ', ' + y + ' zoom: ' + zoom);
});
// 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');
});
// or get a tile from a GeoPackage tile column and tile row
tileDao.queryForTile(tileColumn, tileRow, zoom, function(err, tile) {
var tileData = tile.getTileData(); // the raw bytes from the GeoPackage
});
});
});
// get the feature table names
geoPackage.getFeatureTables(function(err, featureTableNames) {
// featureTableNames is an array of all feature table names
// get the info for the first table
geoPackage.getFeatureDaoWithTableName(featureTableNames[0], function(err, featureDao) {
geoPackage.getInfoForTable(featureDao, function(err, info) {
// do something with the feature table info
});
// 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();
geoJson.properties = {};
for (var key in feature.values) {
if(feature.values.hasOwnProperty(key) && key != feature.getGeometryColumn().name) {
var column = info.columnMap[key];
geoJson.properties[column.displayName] = currentRow.values[key];
}
}
}
rowDone();
});
});
});
});In the browser, sql.js must be loaded asynchronously. You must include the .js loader and provide a locateFile configuration if the .wasm file is not in the same directory as your HTML file. The initSqlJs function is globally provided by the main distribution files.
<script src='/dist/sql-wasm.js'></script>
<script>
const config = {
locateFile: filename => `/dist/${filename}`
};
initSqlJs(config).then(function(SQL) {
// SQL is now available
var db = new SQL.Database();
});
</script>In the browser, GeoPackage JS uses sql.js to read GeoPackages and HTML5 Canvas for tile rendering. To load a GeoPackage from a file input, read the file as an ArrayBuffer, convert it to a Uint8Array, and use GeoPackageConnection.connectWithDatabase to initialize the connection.
// attach this method to a file input onchange event
window.loadGeoPackage = function(files) {
var f = files[0];
var r = new FileReader();
r.onload = function() {
var array = new Uint8Array(r.result);
loadByteArray(array);
}
r.readAsArrayBuffer(f);
}
function loadByteArray(array, callback) {
var db = new SQL.Database(array);
GeoPackageConnection.connectWithDatabase(db, function(err, connection) {
var geoPackage = new GeoPackage('', '', connection);
// Now you can operate on the GeoPackage
// get the tile table names
geoPackage.getTileTables(function(err, tileTableNames) {
// tileTableNames is an array of all tile table names
// get the info for the first table
geoPackage.getTileDaoWithTableName(tileTableNames[0], function(err, tileDao) {
geoPackage.getInfoForTable(tileDao, function(err, info) {
// do something with the tile table info
});
// 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;
console.time('Draw tile ' + x + ', ' + y + ' zoom: ' + zoom);
gpr.drawTileIn(x, y, zoom, canvas, function() {
console.timeEnd('Draw tile ' + x + ', ' + y + ' zoom: ' + zoom);
});
// 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');
});
// or get a tile from a GeoPackage tile column and tile row
tileDao.queryForTile(tileColumn, tileRow, zoom, function(err, tile) {
var tileData = tile.getTileData(); // the raw bytes from the GeoPackage
});
});
});
// get the feature table names
geoPackage.getFeatureTables(function(err, featureTableNames) {
// featureTableNames is an array of all feature table names
// get the info for the first table
geoPackage.getFeatureDaoWithTableName(featureTableNames[0], function(err, featureDao) {
geoPackage.getInfoForTable(featureDao, function(err, info) {
// do something with the feature table info
});
// 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();
geoJson.properties = {};
for (var key in feature.values) {
if(feature.values.hasOwnProperty(key) && key != feature.getGeometryColumn().name) {
var column = info.columnMap[key];
geoJson.properties[column.displayName] = currentRow.values[key];
}
}
}
rowDone();
});
});
});
});
}The simplest way to create a tree is by using existing inline HTML. Select the container element using a jQuery selector and invoke the .jstree() function. You can also use $.jstree.create(element).
You can pass configuration options to specific nodes using the data-jstree attribute.
<div id="container">
<ul>
<li>Root node
<ul>
<li>Child node 1</li>
<li>Child node 2</li>
</ul>
</li>
</ul>
</div>
<script>
$(function() {
$('#container').jstree();
});
</script>You can pull down Spectrum using Bower.
bower install spectrumrequire() support for .json5 files in Node.js by registering the library first.dist/worker.sql-wasm.js and dist/worker.sql-wasm.wasm. The Web Worker API is more limited than the main API.To run the development version, use Grunt to automate testing, linting, and building.
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 buildTicker class from EaselJS. If you want to avoid including the minified EaselJS provided in the libs/tween directory, you must implement your own ticking mechanism to drive the animations.