Height Reference for Corridor, Ellipse, Polygon and Rectangle #6717
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| <!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="An example for how to use the GeometryHeightProperty to height reference a corridor, ellipse, polygon or rectangle."> | ||
| <meta name="cesium-sandcastle-labels" content="Geometries"> | ||
| <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 cesiumTerrainProvider = Cesium.createWorldTerrain(); | ||
| var ellipsoidTerrainProvider = new Cesium.EllipsoidTerrainProvider(); | ||
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| var viewer = new Cesium.Viewer('cesiumContainer', { | ||
| baseLayerPicker : false, | ||
| terrainProvider : cesiumTerrainProvider | ||
| }); | ||
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| // depth test against terrain is required to make the polygons clamp to terrain | ||
| // instead of showing through it from underground | ||
| viewer.scene.globe.depthTestAgainstTerrain = true; | ||
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| Sandcastle.addToolbarMenu([{ | ||
| text : 'Terrain Enabled', | ||
| onselect : function() { | ||
| viewer.scene.terrainProvider = cesiumTerrainProvider; | ||
| } | ||
| }, { | ||
| text : 'Terrain Disabled', | ||
| onselect : function() { | ||
| viewer.scene.terrainProvider = ellipsoidTerrainProvider; | ||
| } | ||
| }]); | ||
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| var longitude = 6.850615989890521; | ||
| var latitude = 45.89546589994886; | ||
| var delta = 0.001; | ||
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| function addEntity(i, j) { | ||
| var west = longitude + delta * i; | ||
| var east = longitude + delta * i + delta; | ||
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| var south = latitude + delta * j; | ||
| var north = latitude + delta * j + delta; | ||
| var a = Cesium.Cartesian3.fromDegrees(west, south); | ||
| var b = Cesium.Cartesian3.fromDegrees(west, north); | ||
| var c = Cesium.Cartesian3.fromDegrees(east, north); | ||
| var d = Cesium.Cartesian3.fromDegrees(east, south); | ||
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| var positions = [a, b, c, d]; | ||
| viewer.entities.add({ | ||
| polygon : { | ||
| hierarchy : positions, | ||
| material : Cesium.Color.fromRandom({alpha : 1}), | ||
| height : 40.0, | ||
| heightReference : Cesium.HeightReference.RELATIVE_TO_GROUND, | ||
| extrudedHeight : 0.0, | ||
| extrudedHeightReference : Cesium.HeightReference.CLAMP_TO_GROUND | ||
| } | ||
| }); | ||
| } | ||
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| // create 16 polygons that are side-by-side | ||
| for (var i = 0; i < 4; i++) { | ||
| for (var j = 0; j < 4; j++) { | ||
| addEntity(i, j); | ||
| } | ||
| } | ||
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| viewer.camera.lookAt(Cesium.Cartesian3.fromDegrees(longitude, latitude, 500), new Cesium.HeadingPitchRange(Cesium.Math.PI, -Cesium.Math.PI_OVER_FOUR, 2000)); | ||
| viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);//Sandcastle_End | ||
| Sandcastle.finishedLoading(); | ||
| } | ||
| if (typeof Cesium !== "undefined") { | ||
| startup(Cesium); | ||
| } else if (typeof require === "function") { | ||
| require(["Cesium"], startup); | ||
| } | ||
| </script> | ||
| </body> | ||
| </html> | ||
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My comments in #6434 (comment) still apply here. I would also like to see some inline comments to explain the feature. If I'm just trying to learn Cesium's capabilities from Sandcastle examples, there's very little context here.