Distance display conditions #4309
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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="Distance display conditions"> | ||
| <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"> | ||
| require.config({ | ||
| baseUrl : '../../../Source', | ||
| waitSeconds : 60 | ||
| }); | ||
| </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'); | ||
|
|
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| function addBillboardAndRectangle() { | ||
| Sandcastle.declare(addBillboardAndRectangle); | ||
|
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| viewer.entities.add({ | ||
| position : Cesium.Cartesian3.fromDegrees(-77, 40.5), | ||
| billboard : { | ||
| image : '../images/facility.gif', | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(5.5e6) | ||
| }, | ||
| rectangle : { | ||
| coordinates : Cesium.Rectangle.fromDegrees(-80.5, 39.7, -75.1, 42.0), | ||
| height : 0.0, | ||
| material : Cesium.Color.RED.withAlpha(0.5), | ||
| outline : true, | ||
| outlineColor : Cesium.Color.RED, | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(0.0, 5.5e6) | ||
| } | ||
| }); | ||
| } | ||
|
|
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| function addPointAndModel() { | ||
| Sandcastle.declare(addPointAndModel); | ||
|
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| var position = Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883, 0.0); | ||
| var heading = Cesium.Math.toRadians(135); | ||
| var orientation = Cesium.Transforms.headingPitchRollQuaternion(position, heading, 0.0, 0.0); | ||
|
|
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| viewer.entities.add({ | ||
| position : position, | ||
| orientation : orientation, | ||
| point : { | ||
| pixelSize : 10, | ||
| color : Cesium.Color.YELLOW, | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(250.5) | ||
| }, | ||
| model : { | ||
| uri : '../../SampleData/models/CesiumGround/Cesium_Ground.glb', | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(0.0, 250.5) | ||
| } | ||
| }); | ||
| } | ||
|
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| Sandcastle.addToolbarMenu([{ | ||
| text : 'Billboard and Primitive', | ||
| onselect : function() { | ||
| addBillboardAndRectangle(); | ||
| Sandcastle.highlight(addBillboardAndRectangle); | ||
| } | ||
| }, { | ||
| text : 'Point and Model', | ||
| onselect : function() { | ||
| addPointAndModel(); | ||
| Sandcastle.highlight(addPointAndModel); | ||
| } | ||
| }]); | ||
|
|
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| Sandcastle.reset = function () { | ||
| viewer.camera.flyHome(0); | ||
| viewer.entities.removeAll(); | ||
| }; | ||
|
|
||
| //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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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| <!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="Display conditions"> | ||
| <meta name="cesium-sandcastle-labels" content="Development"> | ||
| <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); | ||
| </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'); | ||
| var scene = viewer.scene; | ||
|
|
||
| function addBillboardAndPrimitive() { | ||
| Sandcastle.declare(addBillboardAndPrimitive); | ||
|
|
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| var billboards = scene.primitives.add(new Cesium.BillboardCollection()); | ||
| billboards.add({ | ||
| image : '../images/facility.gif', | ||
| position : Cesium.Cartesian3.fromDegrees(-77, 40.5), | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(5.5e6) | ||
| }); | ||
|
|
||
| scene.primitives.add(new Cesium.Primitive({ | ||
| geometryInstances : new Cesium.GeometryInstance({ | ||
| geometry : new Cesium.RectangleGeometry({ | ||
| rectangle : Cesium.Rectangle.fromDegrees(-80.5, 39.7, -75.1, 42.0), | ||
| vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT | ||
| }), | ||
| attributes: { | ||
| color : Cesium.ColorGeometryInstanceAttribute.fromColor(new Cesium.Color(1.0, 0.0, 0.0, 0.5)), | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayConditionGeometryInstanceAttribute(0.0, 5.5e6) | ||
| } | ||
| }), | ||
| appearance : new Cesium.PerInstanceColorAppearance({ | ||
| closed : true | ||
| }) | ||
| })); | ||
| } | ||
|
|
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| function addPointAndModel() { | ||
| Sandcastle.declare(addPointAndModel); | ||
|
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| var position = Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883); | ||
|
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| var pointPrimitives = scene.primitives.add(new Cesium.PointPrimitiveCollection()); | ||
| pointPrimitives.add({ | ||
| color : Cesium.Color.YELLOW, | ||
| position : position, | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(250.5) | ||
| }); | ||
|
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| scene.primitives.add(Cesium.Model.fromGltf({ | ||
| url : '../../SampleData/models/CesiumGround/Cesium_Ground.glb', | ||
| modelMatrix : Cesium.Transforms.eastNorthUpToFixedFrame(position), | ||
| distanceDisplayCondition : new Cesium.DistanceDisplayCondition(0.0, 250.5) | ||
| })); | ||
| } | ||
|
|
||
| Sandcastle.addToolbarMenu([{ | ||
| text : 'Billboard and Primitive', | ||
| onselect : function() { | ||
| addBillboardAndPrimitive(); | ||
| Sandcastle.highlight(addBillboardAndPrimitive); | ||
| } | ||
| }, { | ||
| text : 'Point and Model', | ||
| onselect : function() { | ||
| addPointAndModel(); | ||
| Sandcastle.highlight(addPointAndModel); | ||
| } | ||
| }]); | ||
|
|
||
| Sandcastle.reset = function () { | ||
| viewer.camera.flyHome(0); | ||
| scene.primitives.removeAll(); | ||
| }; | ||
|
|
||
| //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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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /*global define*/ | ||
| define([ | ||
| './Cartesian3', | ||
| './defaultValue', | ||
| './defined', | ||
| './defineProperties', | ||
| './Matrix4' | ||
| ], function( | ||
| Cartesian3, | ||
| defaultValue, | ||
| defined, | ||
| defineProperties, | ||
| Matrix4) { | ||
| 'use strict'; | ||
|
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| /** | ||
| * DOC_TBA | ||
| * | ||
| * @alias DistanceDisplayCondition | ||
| * @constructor | ||
| */ | ||
| function DistanceDisplayCondition(near, far) { | ||
| near = defaultValue(near, 0.0); | ||
| this._near = near; | ||
| this._near2 = near * near; | ||
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| far = defaultValue(far, Number.MAX_VALUE); | ||
| this._far = far; | ||
| this._far2 = far * far; | ||
| } | ||
|
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| defineProperties(DistanceDisplayCondition.prototype, { | ||
| /** | ||
| * DOC_TBA | ||
| * @memberof DistanceDisplayCondition.prototype | ||
| * @type {Number} | ||
| */ | ||
| near : { | ||
| get : function() { | ||
| return this._near; | ||
| }, | ||
| set : function(value) { | ||
| this._near = value; | ||
| this._near2 = value * value; | ||
| } | ||
| }, | ||
| /** | ||
| * DOC_TBA | ||
| * @memberof DistanceDisplayCondition.prototype | ||
| * @type {Number} | ||
| */ | ||
| far : { | ||
| get : function() { | ||
| return this._far; | ||
| }, | ||
| set : function(value) { | ||
| this._far = value; | ||
| this._far2 = value * value; | ||
| } | ||
| } | ||
| }); | ||
|
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| var scratchPosition = new Cartesian3(); | ||
|
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| /** | ||
| * DOC_TBA | ||
| */ | ||
| DistanceDisplayCondition.prototype.isVisible = function(primitive, frameState) { | ||
| // TODO: need to consider positions, e.g., for a polyline | ||
|
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| // Distance to center of primitive's reference frame | ||
| var position = Matrix4.getTranslation(primitive.modelMatrix, scratchPosition); | ||
| var distance2 = Cartesian3.distanceSquared(position, frameState.camera.positionWC); | ||
| return (distance2 >= this._near2) && (distance2 <= this._far2); | ||
| }; | ||
|
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| /** | ||
| * DOC_TBA | ||
| */ | ||
| DistanceDisplayCondition.equals = function(left, right) { | ||
| return left === right || | ||
| (defined(left) && | ||
| defined(right) && | ||
| left.near === right.near && | ||
| left.far === right.far); | ||
| }; | ||
|
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| /** | ||
| * DOC_TBA | ||
| */ | ||
| DistanceDisplayCondition.clone = function(value, result) { | ||
|
There was a problem hiding this comment. Since this is used directly by the Entity api as well, it should have a prototype clone too. Right now the Entity API ends up making a new instance every time get value is called because no prototype clone is defined. |
||
| if (!defined(value)) { | ||
| return undefined; | ||
| } | ||
|
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| if (!defined(result)) { | ||
| result = new DistanceDisplayCondition(); | ||
| } | ||
|
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| result.near = value.near; | ||
| result.far = value.far; | ||
| return result; | ||
| }; | ||
|
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| /** | ||
| * DOC_TBA | ||
| */ | ||
| DistanceDisplayCondition.prototype.equals = function(other) { | ||
| return DistanceDisplayCondition.equals(this, other); | ||
| }; | ||
|
|
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| return DistanceDisplayCondition; | ||
| }); | ||
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Nitpicky, but as a generate practice, we would normally call this
nearSquared.