Style point with scene symbol

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
// Copyright 2025 Esri
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import 'package:arcgis_maps/arcgis_maps.dart';
import 'package:arcgis_maps_sdk_flutter_samples/common/common.dart';
import 'package:flutter/material.dart';

class StylePointWithSceneSymbol extends StatefulWidget {
  const StylePointWithSceneSymbol({super.key});

  @override
  State<StylePointWithSceneSymbol> createState() =>
      _StylePointWithSceneSymbolState();
}

class _StylePointWithSceneSymbolState extends State<StylePointWithSceneSymbol>
    with SampleStateSupport {
  // Create a controller for the scene view.
  final _sceneViewController = ArcGISSceneView.createController();
  // A flag for when the scene view is ready.
  var _ready = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: [
          // Add a scene view to the widget tree and set a controller.
          ArcGISSceneView(
            controllerProvider: () => _sceneViewController,
            onSceneViewReady: onSceneViewReady,
          ),
          // Display a progress indicator and prevent interaction until state is ready.
          LoadingIndicator(visible: !_ready),
        ],
      ),
    );
  }

  Future<void> onSceneViewReady() async {
    // Create a scene with a topographic basemap style.
    final scene = ArcGISScene.withBasemapStyle(BasemapStyle.arcGISTopographic);
    _sceneViewController.arcGISScene = scene;

    // Create an ArcGIS tiled elevation.
    final elevationSource = ArcGISTiledElevationSource.withUri(
      Uri.parse(
        'https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer',
      ),
    );

    // Add the ArcGIS tiled elevation source to the surface's elevated sources collection.
    scene.baseSurface.elevationSources.add(elevationSource);

    // Create the graphics overlay.
    final overlay = GraphicsOverlay();

    // Set the surface placement mode for the overlay.
    overlay.sceneProperties.surfacePlacement = SurfacePlacement.absolute;

    // A list of colors used to visually differentiate each symbol style.
    final colors = [
      Colors.red,
      Colors.green,
      Colors.blue,
      Colors.purple,
      Colors.cyan,
      Colors.blueGrey,
    ];

    for (var i = 0; i < SimpleMarkerSceneSymbolStyle.values.length; i++) {
      final symbolStyle = SimpleMarkerSceneSymbolStyle.values[i];

      // Create the symbol.
      final symbol = SimpleMarkerSceneSymbol(
        style: symbolStyle,
        color: colors[i],
        height: 200,
        width: 200,
        depth: 200,
        anchorPosition: SceneSymbolAnchorPosition.center,
      );

      // Offset each symbol so that they aren't in the same spot.
      final offset = 4.975 + 0.01 * i;
      final point = ArcGISPoint(
        x: offset,
        y: 49,
        z: 500,
        spatialReference: SpatialReference.wgs84,
      );

      // Create the graphic from the geometry and the symbol.
      final graphic = Graphic(geometry: point, symbol: symbol);

      // Add the graphic to the overlay.
      overlay.graphics.add(graphic);
    }

    // Show the graphics overlay in the scene.
    _sceneViewController.graphicsOverlays.add(overlay);

    // Create camera with an initial camera position.
    final camera = Camera.withLatLong(
      latitude: 48.973,
      longitude: 4.92,
      altitude: 2082,
      heading: 60,
      pitch: 75,
      roll: 0,
    );

    // Set the scene view's camera position.
    await _sceneViewController.setViewpointCameraAnimated(camera: camera);

    // Set the ready state variable to true to enable the sample UI.
    setState(() => _ready = true);
  }
}