Functioning renderer

Assets/Scenes/scene.unity

@@ -242,7 +242,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 0c03158bf19bc8c4ab178ebaee653914, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Assembly-CSharp::Map
-  overpassUrl: https://mapz.hozuvkod.dev/api/interpreter
+  overpassUrl: https://mapz.honzuvkod.dev/api/interpreter
   queryRadiusMeters: 200
   latitude: 50.772789001464844
   longitude: 15.076871871948242
@@ -262,7 +262,7 @@ Transform:
   m_GameObject: {fileID: 1274200469}
   serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 314.27454, y: 0, z: 616.551}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -293,7 +293,7 @@ MeshRenderer:
   m_RenderingLayerMask: 1
   m_RendererPriority: 0
   m_Materials:
-  - {fileID: 0}
+  - {fileID: 2100000, guid: 283cf727b4c3ac64c94d59598e221b10, type: 2}
   m_StaticBatchInfo:
     firstSubMesh: 0
     subMeshCount: 0

Assets/Scripts/MapRenderer.cs

@@ -1,26 +1,22 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Globalization;
-using System.Linq;
-using System.Net.Http;
 using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
 using System.Xml;
 using UnityEngine;
 using UnityEngine.Networking;
-using UnityEngine.UIElements;
 
 [RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
-public class Map : MonoBehaviour, IMapDataCollector
+public class MapRenderer : MonoBehaviour
 {
     [Header("Overpass settings")]
     public string overpassUrl = "https://mapz.honzuvkod.dev/api/interpreter";
     public float queryRadiusMeters = 200f; // radius around lat/lon to query
 
     [Header("Location (lat, lon)")]
-    public double latitude = 50.7727878f; // example Prague
+    public double latitude; // example Prague
-    public double longitude = 15.0768714f;
+    public double longitude;
 
     [Header("Building settings")]
     public Material buildingMaterial;
@@ -34,21 +30,78 @@ public class Map : MonoBehaviour, IMapDataCollector
     [Header("Misc")]
     public float metersPerUnit = 1f; // scale: 1 unit = 1 meter
     public bool autoStart = true;
-    class Way
-    {
-        public long id;
-        public List<long> nodeRefs = new List<long>();
-        public Dictionary<string, string> tags = new Dictionary<string, string>();
-    }
 
-    private static readonly HttpClient client = new HttpClient();
+    // Internal storage
-
-    List<Way> parsedWays = new List<Way>();
     Dictionary<long, Vector2> nodes = new Dictionary<long, Vector2>(); // id -> latlon
 
     void Start()
     {
-        CallApi();
+        if (autoStart)
+            StartCoroutine(GenerateForLocation(latitude, longitude));
+    }
+
+    // Public entry for other scripts
+    public void StartGenerating(double lat, double lon)
+    {
+        latitude = lat; longitude = lon;
+        StartCoroutine(GenerateForLocation(lat, lon));
+    }
+
+    IEnumerator GenerateForLocation(double lat, double lon)
+    {
+        ClearChildren();
+
+        // compute bbox from radius
+        float degPerMeter = 1f / 111000f; // approximate
+        double delta = queryRadiusMeters * degPerMeter;
+        double south = lat - delta;
+        double north = lat + delta;
+        double west = lon - delta;
+        double east = lon + delta;
+
+        string q = $"[out:xml][timeout:25];(way[\"building\"]({south.ToString().Replace(",",".")},{west.ToString().Replace(",", ".")},{north.ToString().Replace(",", ".")},{east.ToString().Replace(",", ".")});way[\"highway\"]({south.ToString().Replace(",", ".")},{west.ToString().Replace(",", ".")},{north.ToString().Replace(",", ".")},{east.ToString().Replace(",", ".")}););(._;>;);out body;";
+
+        WWWForm form = new WWWForm();
+        form.AddField("data", q);
+
+        using (UnityWebRequest www = UnityWebRequest.Post(overpassUrl, form))
+        {
+            www.downloadHandler = new DownloadHandlerBuffer();
+            yield return www.SendWebRequest();
+
+            if (www.result != UnityWebRequest.Result.Success)
+            {
+                Debug.LogError("Overpass request failed: " + www.error);
+                yield break;
+            }
+
+            string xml = www.downloadHandler.text;
+            ParseOverpassXml(xml);
+
+            // create separate GameObjects for buildings and roads
+            GameObject buildingsRoot = new GameObject("Buildings");
+            buildingsRoot.transform.parent = this.transform;
+
+            GameObject roadsRoot = new GameObject("Roads");
+            roadsRoot.transform.parent = this.transform;
+
+            // iterate parsed ways
+            foreach (var w in parsedWays)
+            {
+                if (w.tags.ContainsKey("building"))
+                {
+                    GameObject b = BuildBuildingMesh(w);
+                    b.transform.parent = buildingsRoot.transform;
+                }
+                else if (w.tags.ContainsKey("highway"))
+                {
+                    GameObject r = BuildRoadMesh(w);
+                    r.transform.parent = roadsRoot.transform;
+                }
+            }
+
+            Debug.Log("Map generation complete: " + parsedWays.Count + " ways, " + nodes.Count + " nodes.");
+        }
     }
 
     void ClearChildren()
@@ -61,64 +114,16 @@ public class Map : MonoBehaviour, IMapDataCollector
             DestroyImmediate(g);
     }
 
-    public async Task<string> CallOverpassApi(FormUrlEncodedContent query)
+    #region Overpass XML parsing
+    class Way
     {
-        Debug.Log("Calling Overpass API...");
+        public long id;
-
+        public List<long> nodeRefs = new List<long>();
-
+        public Dictionary<string, string> tags = new Dictionary<string, string>();
-        var response = await client.PostAsync(overpassUrl, query);
-        Debug.Log("Received response from Overpass API.");
-        return await response.Content.ReadAsStringAsync();
     }
 
-    public FormUrlEncodedContent QueryBuilder(double[] GPS)
+    List<Way> parsedWays = new List<Way>();
-    {
-        Debug.Log("Building Overpass API query...");
-        string query = @$"
-        [out:xml]
-        [timeout:90];
-        (
-                way(around:{queryRadiusMeters}, {GPS[0].ToString().Replace(",", ".")}, {GPS[1].ToString().Replace(",", ".")});
-            );
-            out geom;";
-        Dictionary<string, string> values = new Dictionary<string, string>()
-        {
-            {"data", query}
-        };
-        Debug.Log("Overpass API query built.");
 
-        return new FormUrlEncodedContent(values);
-    }
-
-    public async void CallApi()
-    {
-        Debug.Log("Testing Overpass API...");
-        double[] GPS = new double[] {latitude, longitude};
-        string result = await CallOverpassApi(QueryBuilder(GPS));
-        Debug.Log("Overpass API response received:");
-        ParseOverpassXml(result);
-        
-        GameObject buildingsRoot = new GameObject("Buildings");
-        buildingsRoot.transform.parent = this.transform;
-        GameObject roadsRoot = new GameObject("Roads");
-        roadsRoot.transform.parent = this.transform;
-        foreach (var w in parsedWays)
-        {
-            if (w.tags.ContainsKey("building"))
-            {
-                //Debug.Log("Building");
-                GameObject b = BuildBuildingMesh(w);
-                b.transform.parent = buildingsRoot.transform;
-            }
-            else if (w.tags.ContainsKey("highway"))
-            {
-                //Debug.Log("Highway");
-                GameObject r = BuildRoadMesh(w);
-                r.transform.parent = roadsRoot.transform;
-            }
-        }
-
-    }
     void ParseOverpassXml(string xmlText)
     {
         nodes.Clear();
@@ -161,6 +166,8 @@ public class Map : MonoBehaviour, IMapDataCollector
             parsedWays.Add(w);
         }
     }
+    #endregion
+
     #region Utilities: latlon to local meters
     // Convert latitude/longitude to local XY meters relative to center point
     Vector3 LatLonToLocal(double lat, double lon)
@@ -499,4 +506,3 @@ public class Map : MonoBehaviour, IMapDataCollector
     }
     #endregion
 }
-