CesiumGS · ggetz · Jul 11, 2018 · May 29, 2018 · May 30, 2018 · May 31, 2018
diff --git a/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/0.pnts b/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/0.pnts
diff --git a/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/1.pnts b/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/1.pnts
diff --git a/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/2.pnts b/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/2.pnts
diff --git a/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/3.pnts b/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/3.pnts
diff --git a/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/4.pnts b/Apps/SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/4.pnts
diff --git a/Apps/Sandcastle/gallery/Time Dynamic Point Cloud.html b/Apps/Sandcastle/gallery/Time Dynamic Point Cloud.html
@@ -0,0 +1,95 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
+    <meta name="description" content="Render a time dynamic point cloud from a set of Point Cloud tiles and timestamps.">
+    <meta name="cesium-sandcastle-labels" content="Showcases">
+    <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">
+        if(typeof require === "function") {
+            require.config({
+                baseUrl : '../../../Source',
+                waitSeconds : 120
+            });
+        }
+    </script>
+</head>
+<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
+<style>
+    @import url(../templates/bucket.css);
+</style>
+<div id="cesiumContainer" class="fullSize"></div>
+<div id="loadingOverlay"><h1>Loading...</h1></div>
+<div id="toolbar"></div>
+<script id="cesium_sandcastle_script">
+function startup(Cesium) {
+    'use strict';
+//Sandcastle_Begin
+var viewer = new Cesium.Viewer('cesiumContainer', {
+    shouldAnimate : true
+});
+
+var dates = [
+    '2018-07-19T15:18:00Z',
+    '2018-07-19T15:18:00.5Z',
+    '2018-07-19T15:18:01Z',
+    '2018-07-19T15:18:01.5Z',
+    '2018-07-19T15:18:02Z',
+    '2018-07-19T15:18:02.5Z'
+];
+
+var uris = [
+    '../../SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/0.pnts',
+    '../../SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/1.pnts',
+    '../../SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/2.pnts',
+    '../../SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/3.pnts',
+    '../../SampleData/Cesium3DTiles/PointCloud/PointCloudTimeDynamic/4.pnts'
+];
+
+function dataCallback(interval, index) {
+    return {
+        uri: uris[index]
+    };
+}
+
+var timeIntervalCollection = Cesium.TimeIntervalCollection.fromIso8601DateArray({
+    iso8601Dates: dates,
+    dataCallback: dataCallback
+});
+
+var pointCloud = new Cesium.TimeDynamicPointCloud({
+    intervals : timeIntervalCollection,
+    clock : viewer.clock,
+    style : new Cesium.Cesium3DTileStyle({
+        pointSize : 5
+    })
+});
+viewer.scene.primitives.add(pointCloud);
+
+var start = Cesium.JulianDate.fromIso8601(dates[0]);
+var stop = Cesium.JulianDate.fromIso8601(dates[dates.length - 1]);
+
+viewer.timeline.zoomTo(start, stop);
+
+var clock = viewer.clock;
+clock.startTime = start;
+clock.currentTime = start;
+clock.stopTime = stop;
+clock.clockRange = Cesium.ClockRange.LOOP_STOP;
+
+viewer.zoomTo(pointCloud, new Cesium.HeadingPitchRange(0.0, -0.5, 50.0));
+//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/Time Dynamic Point Cloud.jpg b/Apps/Sandcastle/gallery/Time Dynamic Point Cloud.jpg
diff --git a/Apps/Sandcastle/gallery/Web Map Tile Service with Time.html b/Apps/Sandcastle/gallery/Web Map Tile Service with Time.html
@@ -71,13 +71,13 @@
 provider.readyPromise
     .then(function() {
         var start = Cesium.JulianDate.fromIso8601('2015-07-30');
-        var end = Cesium.JulianDate.fromIso8601('2017-06-17');
+        var stop = Cesium.JulianDate.fromIso8601('2017-06-17');
 
-        viewer.timeline.zoomTo(start, end);
+        viewer.timeline.zoomTo(start, stop);
 
         var clock = viewer.clock;
         clock.startTime = start;
-        clock.endTime = end;
+        clock.stopTime = stop;
         clock.currentTime = start;
         clock.clockRange = Cesium.ClockRange.LOOP_STOP;
         clock.multiplier = 86400;

diff --git a/CHANGES.md b/CHANGES.md
@@ -3,6 +3,10 @@ Change Log
 
 ### 1.48 - 2018-08-01
 
+##### Additions :tada:
+* Added support for loading Draco compressed Point Cloud tiles for 2-3x better compression. [#6559](https://github.com/AnalyticalGraphicsInc/cesium/pull/6559)
+* Added `TimeDynamicPointCloud` for playback of time-dynamic point cloud data, where each frame is a 3D Tiles Point Cloud tile. [#6721](https://github.com/AnalyticalGraphicsInc/cesium/pull/6721)
+
 ##### Deprecated :hourglass_flowing_sand:
 * Support for 3D Tiles `content.url` is deprecated to reflect updates to the [3D Tiles spec](https://github.com/AnalyticalGraphicsInc/3d-tiles/pull/301). Use `content.uri instead`. Support for `content.url` will remain for backwards compatibility. [#6744](https://github.com/AnalyticalGraphicsInc/cesium/pull/6744)
 

diff --git a/Source/Scene/Cesium3DTileset.js b/Source/Scene/Cesium3DTileset.js
@@ -110,6 +110,7 @@ define([
      * @param {ClippingPlaneCollection} [options.clippingPlanes] The {@link ClippingPlaneCollection} used to selectively disable rendering the tileset.
      * @param {ClassificationType} [options.classificationType] Determines whether terrain, 3D Tiles or both will be classified by this tileset. See {@link Cesium3DTileset#classificationType} for details about restrictions and limitations.
      * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid determining the size and shape of the globe.
+     * @param {Object} [options.pointCloudShading] Options for constructing a {@link PointCloudShading} object to control point attenuation based on geometric error and lighting.
      * @param {Boolean} [options.debugFreezeFrame=false] For debugging only. Determines if only the tiles from last frame should be used for rendering.
      * @param {Boolean} [options.debugColorizeTiles=false] For debugging only. When true, assigns a random color to each tile.
      * @param {Boolean} [options.debugWireframe=false] For debugging only. When true, render's each tile's content as a wireframe.
@@ -120,7 +121,6 @@ define([
      * @param {Boolean} [options.debugShowRenderingStatistics=false] For debugging only. When true, draws labels to indicate the number of commands, points, triangles and features for each tile.
      * @param {Boolean} [options.debugShowMemoryUsage=false] For debugging only. When true, draws labels to indicate the texture and geometry memory in megabytes used by each tile.
      * @param {Boolean} [options.debugShowUrl=false] For debugging only. When true, draws labels to indicate the url of each tile.
-     * @param {Object} [options.pointCloudShading] Options for constructing a {@link PointCloudShading} object to control point attenuation based on geometric error and lighting.
      *
      * @exception {DeveloperError} The tileset must be 3D Tiles version 0.0 or 1.0.  See {@link https://github.com/AnalyticalGraphicsInc/3d-tiles#spec-status}
      *
@@ -417,6 +417,12 @@ define([
          * <p>
          * If there are no event listeners, error messages will be logged to the console.
          * </p>
+         * <p>
+         * The error object passed to the listener contains two properties:
+         * <ul>
+         * <li><code>url</code>: the url of the failed tile.</li>
+         * <li><code>message</code>: the error message.</li>
+         * </ul>
          *
          * @type {Event}
          * @default new Event()
@@ -1720,7 +1726,7 @@ define([
         if (tileset.pointCloudShading.attenuation &&
             tileset.pointCloudShading.eyeDomeLighting &&
             (addedCommandsLength > 0)) {
-            tileset._pointCloudEyeDomeLighting.update(frameState, numberOfInitialCommands, tileset);
+            tileset._pointCloudEyeDomeLighting.update(frameState, numberOfInitialCommands, tileset.pointCloudShading);
         }
 
         if (tileset.debugShowGeometricError || tileset.debugShowRenderingStatistics || tileset.debugShowMemoryUsage || tileset.debugShowUrl) {
@@ -1840,12 +1846,7 @@ define([
     ///////////////////////////////////////////////////////////////////////////
 
     /**
-     * Called when {@link Viewer} or {@link CesiumWidget} render the scene to
-     * get the draw commands needed to render this primitive.
-     * <p>
-     * Do not call this function directly.  This is documented just to
-     * list the exceptions that may be propagated when the scene is rendered:
-     * </p>
+     * @private
      */
     Cesium3DTileset.prototype.update = function(frameState) {
         if (frameState.mode === SceneMode.MORPHING) {

diff --git a/Source/Scene/Expression.js b/Source/Scene/Expression.js
@@ -1748,7 +1748,7 @@ define([
                 throw new RuntimeError('Error generating style shader: undefined is not supported.');
             case ExpressionNodeType.BUILTIN_VARIABLE:
                 if (value === 'tiles3d_tileset_time') {
-                    return 'u_tilesetTime';
+                    return 'u_time';
                 }
         }
     };