Merge pull request #5525 from rahwang/3dtile-picking-demo

adding nyc picking demo
CesiumGS · Jun 22, 2017 · 892f080 · 892f080
2 parents 075c8b3 + cca2d01
commit 892f080
Show file tree

Hide file tree

Showing 2 changed files with 184 additions and 0 deletions.
diff --git a/Apps/Sandcastle/gallery/3D Tiles Feature Picking.html b/Apps/Sandcastle/gallery/3D Tiles Feature Picking.html
@@ -0,0 +1,184 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">  <!-- Use Chrome Frame in IE -->
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
+    <meta name="description" content="Interact with sample 3D Tiles tilesets.">
+    <meta name="cesium-sandcastle-labels" content="3D Tiles">
+    <title>Cesium Demo</title>
+    <script type="text/javascript" src="../Sandcastle-header.js"></script>
+    <script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script>
+    <script type="text/javascript">
+    require.config({
+        baseUrl : '../../../Source',
+        waitSeconds : 60
+    });
+    </script>
+</head>
+<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
+<style>
+    @import url(../templates/bucket.css);
+    #toolbar {
+        background: rgba(42, 42, 42, 0.8);
+        padding: 4px;
+        border-radius: 4px;
+    }
+    #toolbar .header {
+        font-weight: bold;
+        padding-top: 5px;
+        padding-bottom: 5px;
+    }
+</style>
+<div id="cesiumContainer" class="fullSize"></div>
+<div id="loadingOverlay"><h1>Loading...</h1></div>
+<script id="cesium_sandcastle_script">
+function startup(Cesium) {
+    'use strict';
+//Sandcastle_Begin
+// A simple demo of 3D Tiles feature picking with
+// hover and select behavior.
+var viewer = new Cesium.Viewer('cesiumContainer');
+
+// Set the initial camera view to look at Manhattan
+var initialPosition = Cesium.Cartesian3.fromDegrees(-74.01881302800248, 40.69114333714821, 753);
+var initialOrientation = new Cesium.HeadingPitchRoll.fromDegrees(21.27879878293835, -21.34390550872461, 0.0716951918898415);
+viewer.scene.camera.setView({
+    destination: initialPosition,
+    orientation: {
+        heading: initialOrientation.heading,
+        pitch: initialOrientation.pitch,
+        roll: initialOrientation.roll
+    },
+    endTransform: Cesium.Matrix4.IDENTITY
+});
+
+// Load the NYC buildings tileset
+var city = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({
+    url: 'https://cesiumjs.org/NewYork/3DTilesGml',
+    maximumScreenSpaceError: 16 // default value
+}));
+
+//HTML overlay for showing building name on mouseover.
+var nameOverlay = document.createElement('div');
+viewer.container.appendChild(nameOverlay);
+nameOverlay.className = 'backdrop';
+nameOverlay.style.display = 'none';
+nameOverlay.style.position = 'absolute';
+nameOverlay.style.bottom = '0';
+nameOverlay.style.left = '0';
+nameOverlay.style['pointer-events'] = 'none';
+nameOverlay.style.padding = '4px';
+nameOverlay.style.backgroundColor = 'black';
+
+// Information about the currently selected building.
+var selected = {
+    building: undefined, // a Cesium3DTileFeature
+    originalColor: new Cesium.Color()
+};
+
+// Information about the currently highlighted building.
+var highlighted = {
+    building: undefined, // a Cesium3DTileFeature
+    originalColor: new Cesium.Color()
+};
+
+// An entity object which will hold info about the currently selected feature
+// for infobox display
+var selectedEntity = new Cesium.Entity();
+
+// Color a building yellow on hover.
+viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(movement) {
+
+    // If a building was previously highlighted, undo the highlight.
+    if (Cesium.defined(highlighted.building)) {
+        // Restore original color to building that is no longer highlighted
+        // This assignment is necessary to work with the set property
+        highlighted.building.color = Cesium.Color.clone(highlighted.originalColor, highlighted.building.color);
+        highlighted.building = undefined;
+    }
+
+    // Pick a new building, a Cesium3DTileFeature
+    var pickedBuilding = viewer.scene.pick(movement.endPosition);
+    if (!Cesium.defined(pickedBuilding)) {
+        nameOverlay.style.display = 'none';
+        return;
+    }
+
+    // A building was picked, so show it's overlay content
+    nameOverlay.style.display = 'block';
+    nameOverlay.style.bottom = viewer.canvas.clientHeight - movement.endPosition.y + 'px';
+    nameOverlay.style.left = movement.endPosition.x + 'px';
+    var name = pickedBuilding.getProperty('name');
+    if (!Cesium.defined(name)) {
+        name = pickedBuilding.getProperty('id');
+    }
+    nameOverlay.textContent = name;
+
+    // Highlight the building if it's not already selected.
+    if (pickedBuilding !== selected.building) {
+        highlighted.building = pickedBuilding;
+        Cesium.Color.clone(pickedBuilding.color, highlighted.originalColor);
+        pickedBuilding.color = Cesium.Color.clone(Cesium.Color.YELLOW, pickedBuilding.color);
+    }
+}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
+
+// Color a building on selection and show metadata in the InfoBox.
+var clickHandler = viewer.screenSpaceEventHandler.getInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK);
+viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {
+    if (Cesium.defined(selected.building)) {
+        // Restore original color to building that is no longer selected
+        // This assignment is necessary to work with the set property
+        selected.building.color = Cesium.Color.clone(selected.originalColor, selected.building.color);
+        selected.building = undefined;
+    }
+
+    // Pick a Cesium3DTileFeature
+    var pickedBuilding = viewer.scene.pick(movement.position);
+    if (!Cesium.defined(pickedBuilding)) {
+        clickHandler(movement);
+        return;
+    }
+
+    // Select the building if it's not already selected
+    if (selected.building === pickedBuilding) {
+        return;
+    }
+    selected.building = pickedBuilding;
+
+    // Save the selected building's original color
+    if (pickedBuilding === highlighted.building) {
+        // If building is highlighted grab its actual original color
+        Cesium.Color.clone(highlighted.originalColor, selected.originalColor);
+        highlighted.building = undefined;
+    }
+    else {
+        Cesium.Color.clone(pickedBuilding.color, selected.originalColor);
+    }
+
+    // Highlight newly selected building
+    pickedBuilding.color = Cesium.Color.clone(Cesium.Color.LIME, pickedBuilding.color);
+
+    // Set building infobox description
+    var featureName = pickedBuilding.getProperty('name');
+    selectedEntity.name = featureName;
+    selectedEntity.description = 'Loading <div class="cesium-infoBox-loading"></div>';
+    viewer.selectedEntity = selectedEntity;
+    selectedEntity.description = '<table class="cesium-infoBox-defaultTable"><tbody>' +
+                                 '<tr><th>BIN</th><td>' + pickedBuilding.getProperty('BIN') + '</td></tr>' +
+                                 '<tr><th>DOITT ID</th><td>' + pickedBuilding.getProperty('DOITT_ID') + '</td></tr>' +
+                                 '<tr><th>SOURCE ID</th><td>' + pickedBuilding.getProperty('SOURCE_ID') + '</td></tr>' +
+                                 '</tbody></table>';
+}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
+
+//Sandcastle_End
+Sandcastle.finishedLoading();
+}
+if (typeof Cesium !== "undefined") {
+    startup(Cesium);
+} else if (typeof require === "function") {
+    require(["Cesium"], startup);
+}
+</script>
+</body>
+</html>
diff --git a/Apps/Sandcastle/gallery/3D Tiles Feature Picking.jpg b/Apps/Sandcastle/gallery/3D Tiles Feature Picking.jpg