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<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<title>SceneLayerView - query statistics by geometry | Sample | ArcGIS API for JavaScript 4.19</title>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
100%;
}
.esri-ui-top-right {
max-height: 100%;
}
#queryDiv, #resultDiv {
min- 250px;
font-size: 14px;
padding: 10px;
display: none;
overflow-y: auto;
overflow-x: hidden;
}
.geometry-options {
display: flex;
flex-direction: row;
}
.geometry-button {
flex: 1;
border-style: solid;
border- 1px;
border-image: none;
}
.geometry-button-selected {
background: #4c4c4c;
color: #fff;
}
#bufferNum {
90%;
margin: 2.5em auto 0;
}
.count {
white-space: nowrap;
font-size: 14px;
font-weight: bold;
display: inline-block;
}
</style>
<!-- Load the Chart.js library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>
<link rel="stylesheet" href="https://js.arcgis.com/4.19/esri/themes/light/main.css" />
<script src="https://js.arcgis.com/4.19/"></script>
<script>
require([
"esri/WebScene",
"esri/views/SceneView",
"esri/layers/GraphicsLayer",
"esri/widgets/Sketch/SketchViewModel",
"esri/widgets/Slider",
"esri/geometry/geometryEngine",
"esri/Graphic",
"esri/core/promiseUtils"
], function(
WebScene,
SceneView,
GraphicsLayer,
SketchViewModel,
Slider,
geometryEngine,
Graphic,
promiseUtils
) {
// Load webscene and display it in a SceneView
const webscene = new WebScene({
portalItem: {
id: "fb5948b2bb76439792786000b942e5b7"
}
});
// create the SceneView
const view = new SceneView({
container: "viewDiv",
map: webscene,
});
window.view = view;
// add a GraphicsLayer for the sketches and the buffer
const sketchLayer = new GraphicsLayer();
const bufferLayer = new GraphicsLayer();
view.map.addMany([bufferLayer, sketchLayer]);
let sceneLayer = null;
let sceneLayerView = null;
let bufferSize = 0;
// Assign scene layer once webscene is loaded and initialize UI
webscene.load().then(function() {
sceneLayer = webscene.layers.find(function(layer) {
return layer.title === "Helsinki textured buildings";
});
sceneLayer.outFields = ["buildingMaterial", "yearCompleted"];
view.whenLayerView(sceneLayer).then(function (layerView) {
sceneLayerView = layerView;
queryDiv.style.display = "block";
});
});
view.ui.add([queryDiv], "bottom-left");
view.ui.add([resultDiv], "top-right");
// use SketchViewModel to draw polygons that are used as a query
let sketchGeometry = null;
const sketchViewModel = new SketchViewModel({
layer: sketchLayer,
defaultUpdateOptions: {
tool: "reshape",
toggleToolOnClick: false
},
view: view,
defaultCreateOptions: { hasZ: false }
});
sketchViewModel.on("create", function(event) {
if (event.state === "complete") {
sketchGeometry = event.graphic.geometry;
runQuery();
}
});
sketchViewModel.on("update", function(event) {
if (event.state === "complete") {
sketchGeometry = event.graphics[0].geometry;
runQuery();
}
});
// draw geometry buttons - use the selected geometry to sktech
document
.getElementById("point-geometry-button")
.addEventListener("click", geometryButtonsClickHandler);
document
.getElementById("line-geometry-button")
.addEventListener("click", geometryButtonsClickHandler);
document
.getElementById("polygon-geometry-button")
.addEventListener("click", geometryButtonsClickHandler);
function geometryButtonsClickHandler(event) {
const geometryType = event.target.value;
clearGeometry();
sketchViewModel.create(geometryType);
}
const bufferNumSlider = new Slider({
container: "bufferNum",
min: 0,
max: 500,
steps: 1,
visibleElements: {
labels: true,
},
precision: 0,
labelFormatFunction: function(value, type) {
return value.toString() + "m";
},
values: [0]
});
// get user entered values for buffer
bufferNumSlider.on(["thumb-change", "thumb-drag"], bufferVariablesChanged);
function bufferVariablesChanged(event) {
bufferSize = event.value;
runQuery();
}
// Clear the geometry and set the default renderer
document
.getElementById("clearGeometry")
.addEventListener("click", clearGeometry);
// Clear the geometry and set the default renderer
function clearGeometry() {
sketchGeometry = null;
sketchViewModel.cancel();
sketchLayer.removeAll();
bufferLayer.removeAll();
clearHighlighting();
clearCharts();
resultDiv.style.display = "none";
}
// set the geometry query on the visible SceneLayerView
var debouncedRunQuery = promiseUtils.debounce(function() {
if (!sketchGeometry) {
return;
}
resultDiv.style.display = "block";
updateBufferGraphic(bufferSize);
return promiseUtils.eachAlways([
queryStatistics(),
updateSceneLayer()
]);
});
function runQuery() {
debouncedRunQuery().catch((