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pointcloud 0.1
add pointcloud demo
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‎.github/workflows/build_and_deploy.yml

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CI=false yarn build
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cd ..
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cp -r multi_tab/dist docs-build/multi_tab
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- name: Install and build pointcloud🔧
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run: |
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cd pointcloud
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yarn
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CI=false yarn build
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cd ..
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cp -r pointcloud/dist docs-build/pointcloud
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- name: copy catalogue metadata
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run: |
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cp mc_meta.json docs-build/mc_meta.json

‎assets/thumbnails/PointCloudDemoThumbnail.png

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‎mc_meta.json

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{
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"AppRunningContest": {
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"name": "AppRunningContest",
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"title": "Running contest",
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"description": "A WebGis application which shows the results of a running contest between members of the different WhereGroup company locations in Germany.",
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"i18n": {
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"de": {
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"title": "Laufwettbewerb",
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"description": "Eine WebGis Anwendung die den Laufwettbewerb zwischen Mitarbeitern der verschiedenen WhereGroup Standorte in Deutschland darstellt."
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": [
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"MlTransitionGeoJsonLayer",
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"MlGeoJsonLayer",
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"MlVectorTileLayer"
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],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/AppRunningContest.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/running_contest/"
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}
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]
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},
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"AppWebGis": {
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"name": "AppWebGis",
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"title": "WebGis",
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"description": "An example of a WebGis application with different measure tools, visualizing multiple layers containg various data within north-rhine westphalia",
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"i18n": {
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"de": {
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"title": "WebGis",
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"description": "Eine WebGis Anwenung mit Messwerkzeugen, dargestellt werden mehere Layer mit unetrschiedlichen Informationen in NRW"
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": [
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"MlGeoJsonLayer",
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"MlIconLayer",
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"MlWmsLoader",
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"MlNavigationTools"
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],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/AppWebGis.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/webGis/"
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}
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]
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},
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"PowerPlantsApp": {
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"name": "PowerPlantsApp",
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"title": "World Power Plants",
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"description": "A WebGis application providing precise Information about various types of energy generation across the whole planet ",
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"i18n": {
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"de": {
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"title": "Energiekraftwerke weltweit",
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"description": "Eine WebGis-Anwendung welche Inofrmationen über Energieerzeugung auf der ganzen Welt darstellt"
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": ["MlGeoJsonLayer", "MlWmsLoader", "MlNavigationTools"],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/PowerPlants.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/powerplants/"
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}
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]
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},
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"AppRunningContest": {
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"name": "AppRunningContest",
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"title": "Running contest",
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"description": "A WebGis application which shows the results of a running contest between members of the different WhereGroup company locations in Germany.",
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"i18n": {
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"de": {
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"title": "Laufwettbewerb",
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"description": "Eine WebGis Anwendung die den Laufwettbewerb zwischen Mitarbeitern der verschiedenen WhereGroup Standorte in Deutschland darstellt."
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": [
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"MlTransitionGeoJsonLayer",
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"MlGeoJsonLayer",
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"MlVectorTileLayer"
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],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/AppRunningContest.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/running_contest/"
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}
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]
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},
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"AppWebGis": {
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"name": "AppWebGis",
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"title": "WebGis",
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"description": "An example of a WebGis application with different measure tools, visualizing multiple layers containg various data within north-rhine westphalia",
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"i18n": {
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"de": {
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"title": "WebGis",
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"description": "Eine WebGis Anwenung mit Messwerkzeugen, dargestellt werden mehere Layer mit unetrschiedlichen Informationen in NRW"
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": [
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"MlGeoJsonLayer",
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"MlIconLayer",
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"MlWmsLoader",
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"MlNavigationTools"
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],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/AppWebGis.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/webGis/"
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}
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]
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},
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"PowerPlantsApp": {
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"name": "PowerPlantsApp",
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"title": "World Power Plants",
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"description": "A WebGis application providing precise Information about various types of energy generation across the whole planet ",
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"i18n": {
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"de": {
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"title": "Energiekraftwerke weltweit",
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"description": "Eine WebGis-Anwendung welche Inofrmationen über Energieerzeugung auf der ganzen Welt darstellt"
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"components": [
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"MlGeoJsonLayer",
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"MlWmsLoader",
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"MlNavigationTools"
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],
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/PowerPlants.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/powerplants/"
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}
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]
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},
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"PointCloud": {
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"name": "PointCloud",
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"title": "PointCloud on world map",
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"description": "Ever heard of a PointCloud? Basically, it's a set of points placed in 3-dimensional space creating a detailed 3D object. This application contains an example of a point cloud, but projected onto the world map.",
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"i18n": {
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"de": {
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"title": "Energiekraftwerke weltweit",
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"description": "Haben Sie schon einmal von einer PointCloud gehört? Im Grunde genommen handelt es sich um eine Reihe von Punkten, die im dreidimensionalen Raum platziert sind und ein detailliertes 3D-Objekt bilden. Diese Anwendung enthält ein Beispiel für eine Punktwolke, allerdings projiziert auf die Weltkarte."
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}
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},
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"tags": [],
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"category": "",
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"type": "application",
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"thumbnail": "https://mapcomponents.github.io/react-map-components-apps/assets/thumbnails/PointCloudDemoThumbnail.png",
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"demos": [
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{
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"name": "Demo",
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"url": "https://mapcomponents.github.io/react-map-components-apps/pointcloud/"
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}
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]
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},
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"MultiTab": {
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"name": "MultiTab",
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"title": "Multi-Tab Demo",

‎pointcloud/.eslintrc.cjs

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module.exports = {
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env: { browser: true, es2020: true },
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extends: [
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'eslint:recommended',
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'plugin:@typescript-eslint/recommended',
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'plugin:react-hooks/recommended',
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],
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parser: '@typescript-eslint/parser',
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parserOptions: { ecmaVersion: 'latest', sourceType: 'module' },
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plugins: ['react-refresh'],
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rules: {
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'react-refresh/only-export-components': 'warn',
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},
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}

‎pointcloud/.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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pnpm-debug.log*
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lerna-debug.log*
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node_modules
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dist
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dist-ssr
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*.local
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# Editor directories and files
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.vscode/*
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!.vscode/extensions.json
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.idea
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.DS_Store
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*.suo
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*.ntvs*
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*.njsproj
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*.sln
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*.sw?
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sample*

‎pointcloud/Dockerfile

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FROM node:18 as node_builder
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WORKDIR /usr/src/app
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COPY . /usr/src/app
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RUN yarn
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RUN yarn build
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FROM nginxinc/nginx-unprivileged:1.21
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COPY --from=node_builder /usr/src/app/dist /usr/share/nginx/html
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EXPOSE 80
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CMD ["nginx", "-g", "daemon off;"]

‎pointcloud/README.md

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# MapComponents Point cloud - Demo
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Diese Demo lädt eine Punktwolke im JSON-Format. Sie muss sich im Ordner „Public“ mit dem Namen „output_pointcloud.json“ befinden.
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Um die Datei zu erzeugen, führt man das Skript **converter.py** aus und übergibt als Parameter den Pfad zur LAS-Datei:
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```bash
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python3 converter.py < path_to_file >
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```
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# MapComponents + vite + react + typescript
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This template is based on the vite ts-react template, and adds all
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required basic components for a MapComponents application.
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## Start the development server
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```bash
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yarn dev
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```

‎pointcloud/converter.py

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import laspy
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import json
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import numpy as np
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from laspy.compression import LazBackend
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from pyproj import Transformer
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import argparse
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# Set up argument parsing
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parser = argparse.ArgumentParser(description="Process a LAS/LAZ file.")
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parser.add_argument("input_las", type=str, help="Path to the LAS/LAZ file")
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# Parse the arguments
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args = parser.parse_args()
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# Load the LAS/LAZ file
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input_las = args.input_las
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if LazBackend.Lazrs.is_available():
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laz_backend = LazBackend.Lazrs
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elif LazBackend.Laszip.is_available():
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laz_backend = LazBackend.Laszip
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else:
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raise RuntimeError("No LAZ backend is available. Install lazrs or laszip.")
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las = laspy.read(input_las, laz_backend=laz_backend)
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original_crs = "EPSG:25832"
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target_crs = "EPSG:4326" # WGS84
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# Set up transformer for coordinate system conversion to WGS84
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transformer = Transformer.from_crs(original_crs, target_crs, always_xy=True)
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# Extract x, y, z coordinates and transform to WGS84
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x, y, z = transformer.transform(las.x, las.y, las.z)
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# Check for RGB color information
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dimension_names = las.point_format.dimension_names
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has_rgb = 'red' in dimension_names and 'green' in dimension_names and 'blue' in dimension_names
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# Extract color values and normalize them to 8-bit range
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if has_rgb:
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r = (las.red / 256).astype(np.uint8)
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g = (las.green / 256).astype(np.uint8)
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b = (las.blue / 256).astype(np.uint8)
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else:
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# Default grey color if RGB is missing
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r = np.full_like(x, 128, dtype=np.uint8)
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g = np.full_like(x, 128, dtype=np.uint8)
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b = np.full_like(x, 128, dtype=np.uint8)
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# Prepare the data for JSON export
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positions: list = []
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normals: list = []
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colors: list = []
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for i in range(len(x)):
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position = [float(x[i]), float(y[i]), float(z[i])]
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normal = [0, 0, -1] # Normal placeholder; replace with actual data if available
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color = [int(r[i]), int(g[i]), int(b[i])] # Use the scaled 8-bit values
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positions.append(position)
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normals.append(normal)
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colors.append(color)
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points = {
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"positions": positions,
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"normals": normals,
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"colors": colors
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}
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# Export to JSON
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output_json = "public/output_pointcloud.json"
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with open(output_json, "w") as f:
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json.dump(points, f, indent=2)
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print(f"Exported LAS/LAZ data to JSON format: {output_json}")

‎pointcloud/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<link rel="manifest" href="/manifest.json">
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<link rel="icon" type="image/png" sizes="196x196" href="favicon-196.png">
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<link rel="apple-touch-icon" href="apple-icon-180.png">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<title>PointCloud (3D-Darstellung)</title>
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</head>
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<body>
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<div id="root"></div>
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<script type="module" src="/src/main.tsx"></script>
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</body>
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</html>

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