{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[![image](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://demo.leafmap.org/lab/index.html?path=maplibre/animate_point_along_route.ipynb)\n",
    "[![image](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/opengeos/leafmap/blob/master/docs/maplibre/animate_point_along_route.ipynb)\n",
    "[![image](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/opengeos/leafmap/HEAD)\n",
    "\n",
    "**Animate a point along a route**\n",
    "\n",
    "This source code of this example is adapted from the MapLibre GL JS example - [Animate a point along a route](https://maplibre.org/maplibre-gl-js/docs/examples/animate-point-along-route/).\n",
    "\n",
    "Uncomment the following line to install [leafmap](https://leafmap.org) if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# %pip install \"leafmap[maplibre]\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import time\n",
    "import requests\n",
    "import leafmap.maplibregl as leafmap"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "To run this notebook, you will need an [API key](https://docs.maptiler.com/cloud/api/authentication-key/) from [MapTiler](https://www.maptiler.com/cloud/). Once you have the API key, you can uncomment the following code block and replace `YOUR_API_KEY` with your actual API key. Then, run the code block code to set the API key as an environment variable."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# import os\n",
    "# os.environ[\"MAPTILER_KEY\"] = \"YOUR_API_KEY\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map(center=[-100, 40], zoom=3, style=\"streets\")\n",
    "url = \"https://github.com/opengeos/datasets/releases/download/us/arc_with_bearings.geojson\"\n",
    "geojson = requests.get(url).json()\n",
    "bearings = geojson[\"features\"][0][\"properties\"][\"bearings\"]\n",
    "coordinates = geojson[\"features\"][0][\"geometry\"][\"coordinates\"][:-1]\n",
    "m.add_geojson(geojson, name=\"route\")\n",
    "\n",
    "origin = [-122.414, 37.776]\n",
    "destination = [-77.032, 38.913]\n",
    "\n",
    "point = {\n",
    "    \"type\": \"FeatureCollection\",\n",
    "    \"features\": [\n",
    "        {\n",
    "            \"type\": \"Feature\",\n",
    "            \"properties\": {},\n",
    "            \"geometry\": {\"type\": \"Point\", \"coordinates\": origin},\n",
    "        }\n",
    "    ],\n",
    "}\n",
    "source = {\"type\": \"geojson\", \"data\": point}\n",
    "m.add_source(\"point\", source)\n",
    "layer = {\n",
    "    \"id\": \"point\",\n",
    "    \"source\": \"point\",\n",
    "    \"type\": \"symbol\",\n",
    "    \"layout\": {\n",
    "        \"icon-image\": \"airport_15\",\n",
    "        \"icon-rotate\": [\"get\", \"bearing\"],\n",
    "        \"icon-rotation-alignment\": \"map\",\n",
    "        \"icon-overlap\": \"always\",\n",
    "        \"icon-ignore-placement\": True,\n",
    "    },\n",
    "}\n",
    "m.add_layer(layer)\n",
    "m"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for index, coordinate in enumerate(coordinates):\n",
    "    point[\"features\"][0][\"geometry\"][\"coordinates\"] = coordinate\n",
    "    point[\"features\"][0][\"properties\"][\"bearing\"] = bearings[index]\n",
    "    m.set_data(\"point\", point)\n",
    "    time.sleep(0.05)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "![](https://i.imgur.com/kdP1oT1.png)"
   ]
  }
 ],
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