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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | +<head> |
| 4 | + <meta charset="utf-8"> |
| 5 | + <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| 6 | + <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> |
| 7 | + <meta name="description" content="Draw lines and polygons on terrain with mouse clicks."> |
| 8 | + <meta name="cesium-sandcastle-labels" content="Showcases"> |
| 9 | + <title>Cesium Demo</title> |
| 10 | + <script type="text/javascript" src="../Sandcastle-header.js"></script> |
| 11 | + <script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script> |
| 12 | + <script type="text/javascript"> |
| 13 | + require.config({ |
| 14 | + baseUrl : '../../../Source', |
| 15 | + waitSeconds : 60 |
| 16 | + }); |
| 17 | + </script> |
| 18 | +</head> |
| 19 | +<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html"> |
| 20 | +<style> |
| 21 | + @import url(../templates/bucket.css); |
| 22 | +</style> |
| 23 | +<div id="cesiumContainer" class="fullSize"></div> |
| 24 | +<div id="loadingOverlay"><h1>Loading...</h1></div> |
| 25 | +<div id="toolbar"> |
| 26 | + <table class="infoPanel"> |
| 27 | + <tbody> |
| 28 | + <tr> |
| 29 | + <td>Left click to add a vertex.</td> |
| 30 | + </tr> |
| 31 | + <tr> |
| 32 | + <td>Right click to start new shape.</td> |
| 33 | + </tr> |
| 34 | + </tbody> |
| 35 | + </table> |
| 36 | +</div> |
| 37 | +<script id="cesium_sandcastle_script"> |
| 38 | +function startup(Cesium) { |
| 39 | + 'use strict'; |
| 40 | +//Sandcastle_Begin |
| 41 | +var viewer = new Cesium.Viewer('cesiumContainer', { |
| 42 | + selectionIndicator : false, |
| 43 | + infoBox : false, |
| 44 | + terrainProvider : Cesium.createWorldTerrain() |
| 45 | +}); |
| 46 | +viewer.cesiumWidget.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK); |
| 47 | +function createPoint(worldPosition) { |
| 48 | + var point = viewer.entities.add({ |
| 49 | + position : worldPosition, |
| 50 | + point : { |
| 51 | + color : Cesium.Color.WHITE, |
| 52 | + pixelSize : 5, |
| 53 | + heightReference: Cesium.HeightReference.CLAMP_TO_GROUND |
| 54 | + } |
| 55 | + }); |
| 56 | + return point; |
| 57 | +} |
| 58 | +var drawingMode = 'line'; |
| 59 | +function drawShape(positionData) { |
| 60 | + var shape; |
| 61 | + if (drawingMode === 'line') { |
| 62 | + shape = viewer.entities.add({ |
| 63 | + polyline : { |
| 64 | + positions : positionData, |
| 65 | + clampToGround : true, |
| 66 | + width : 3 |
| 67 | + } |
| 68 | + }); |
| 69 | + } |
| 70 | + else if (drawingMode === 'polygon') { |
| 71 | + shape = viewer.entities.add({ |
| 72 | + polygon: { |
| 73 | + hierarchy: positionData, |
| 74 | + outline: true, |
| 75 | + material: new Cesium.ColorMaterialProperty(Cesium.Color.WHITE.withAlpha(0.7)) |
| 76 | + } |
| 77 | + }); |
| 78 | + } |
| 79 | + return shape; |
| 80 | +} |
| 81 | +var activeShapePoints = []; |
| 82 | +var activeShape; |
| 83 | +var floatingPoint; |
| 84 | +var handler = new Cesium.ScreenSpaceEventHandler(viewer.canvas); |
| 85 | +handler.setInputAction(function(event) { |
| 86 | + // We use `viewer.scene.pickPosition` here instead of `viewer.camera.pickEllipsoid` so that |
| 87 | + // we get the correct point when mousing over terrain. |
| 88 | + var earthPosition = viewer.scene.pickPosition(event.position); |
| 89 | + // `earthPosition` will be undefined if our mouse is not over the globe. |
| 90 | + if (Cesium.defined(earthPosition)) { |
| 91 | + if (activeShapePoints.length === 0) { |
| 92 | + floatingPoint = createPoint(earthPosition); |
| 93 | + activeShapePoints.push(earthPosition); |
| 94 | + var dynamicPositions = new Cesium.CallbackProperty(function () { |
| 95 | + return activeShapePoints; |
| 96 | + }, false); |
| 97 | + activeShape = drawShape(dynamicPositions); |
| 98 | + } |
| 99 | + activeShapePoints.push(earthPosition); |
| 100 | + createPoint(earthPosition); |
| 101 | + } |
| 102 | +}, Cesium.ScreenSpaceEventType.LEFT_CLICK); |
| 103 | + |
| 104 | +handler.setInputAction(function(event) { |
| 105 | + if (Cesium.defined(floatingPoint)) { |
| 106 | + var newPosition = viewer.scene.pickPosition(event.endPosition); |
| 107 | + if (Cesium.defined(newPosition)) { |
| 108 | + floatingPoint.position.setValue(newPosition); |
| 109 | + activeShapePoints.pop(); |
| 110 | + activeShapePoints.push(newPosition); |
| 111 | + } |
| 112 | + } |
| 113 | +}, Cesium.ScreenSpaceEventType.MOUSE_MOVE); |
| 114 | +// Redraw the shape so it's not dynamic and remove the dynamic shape. |
| 115 | +function terminateShape() { |
| 116 | + activeShapePoints.pop(); |
| 117 | + drawShape(activeShapePoints); |
| 118 | + viewer.entities.remove(floatingPoint); |
| 119 | + viewer.entities.remove(activeShape); |
| 120 | + floatingPoint = undefined; |
| 121 | + activeShape = undefined; |
| 122 | + activeShapePoints = []; |
| 123 | +} |
| 124 | +handler.setInputAction(function(event) { |
| 125 | + terminateShape(); |
| 126 | +}, Cesium.ScreenSpaceEventType.RIGHT_CLICK); |
| 127 | + |
| 128 | +var options = [{ |
| 129 | + text : 'Draw Lines', |
| 130 | + onselect : function() { |
| 131 | + terminateShape(); |
| 132 | + drawingMode = 'line'; |
| 133 | + } |
| 134 | +}, { |
| 135 | + text : 'Draw Polygons', |
| 136 | + onselect : function() { |
| 137 | + terminateShape(); |
| 138 | + drawingMode = 'polygon'; |
| 139 | + } |
| 140 | +}]; |
| 141 | + |
| 142 | +Sandcastle.addToolbarMenu(options); |
| 143 | +// Zoom in to an area with mountains |
| 144 | +viewer.camera.lookAt(Cesium.Cartesian3.fromDegrees(-122.2058, 46.1955, 1000.0), new Cesium.Cartesian3(5000.0, 5000.0, 5000.0)); |
| 145 | +viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY); |
| 146 | +//Sandcastle_End |
| 147 | + Sandcastle.finishedLoading(); |
| 148 | +} |
| 149 | +if (typeof Cesium !== "undefined") { |
| 150 | + startup(Cesium); |
| 151 | +} else if (typeof require === "function") { |
| 152 | + require(["Cesium"], startup); |
| 153 | +} |
| 154 | +</script> |
| 155 | +</body> |
| 156 | +</html> |
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