Set texture sampler properties of ImageryLayer #5890
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| @@ -0,0 +1,110 @@ | ||
| <!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="Set the texture minification and magnification filters of an imagery layer."> | ||
| <meta name="cesium-sandcastle-labels" content="Beginner, Tutorials, 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"> | ||
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| <style> | ||
| @import url(../templates/bucket.css); | ||
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| #slider { | ||
| position: absolute; | ||
| left: 50%; | ||
| top: 0px; | ||
| background-color: #D3D3D3; | ||
| width: 2px; | ||
| height: 100%; | ||
| z-index: 9999; | ||
| } | ||
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| #slider:hover { | ||
| cursor: ew-resize; | ||
| } | ||
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| </style> | ||
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| <div id="cesiumContainer" class="fullSize"> | ||
| <div id="slider"></div> | ||
| </div> | ||
| <div id="loadingOverlay"><h1>Loading...</h1></div> | ||
| <div id="toolbar"></div> | ||
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| <script id="cesium_sandcastle_script"> | ||
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| function startup(Cesium) { | ||
| 'use strict'; | ||
| //Sandcastle_Begin | ||
| var viewer = new Cesium.Viewer('cesiumContainer'); | ||
| viewer.camera.flyTo({destination : new Cesium.Rectangle.fromDegrees(-84, 43, -80, 47)}); | ||
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| var layers = viewer.imageryLayers; | ||
| layers.removeAll(); | ||
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| var layerLinear = layers.addImageryProvider(Cesium.createTileMapServiceImageryProvider({ | ||
| url : require.toUrl('Assets/Textures/NaturalEarthII') | ||
| })); | ||
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| var layerNearest = layers.addImageryProvider(Cesium.createTileMapServiceImageryProvider({ | ||
| url : require.toUrl('Assets/Textures/NaturalEarthII') | ||
| })); | ||
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| // Set the texture minification and magnification filters of layerNearest. Default is LINEAR. | ||
| layerNearest.minificationFilter = Cesium.TextureMinificationFilter.NEAREST; | ||
| layerNearest.magnificationFilter = Cesium.TextureMagnificationFilter.NEAREST; | ||
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| // The remaining code installs a split layer so the effect of the texture filters becomes apparent. | ||
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| layerNearest.splitDirection = Cesium.ImagerySplitDirection.RIGHT; | ||
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| var slider = document.getElementById('slider'); | ||
| viewer.scene.imagerySplitPosition = (slider.offsetLeft) / slider.parentElement.offsetWidth; | ||
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| var dragStartX = 0; | ||
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| document.getElementById('slider').addEventListener('mousedown', mouseDown, false); | ||
| window.addEventListener('mouseup', mouseUp, false); | ||
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| function mouseUp() { | ||
| window.removeEventListener('mousemove', sliderMove, true); | ||
| } | ||
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| function mouseDown(e) { | ||
| var slider = document.getElementById('slider'); | ||
| dragStartX = e.clientX - slider.offsetLeft; | ||
| window.addEventListener('mousemove', sliderMove, true); | ||
| } | ||
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| function sliderMove(e) { | ||
| var slider = document.getElementById('slider'); | ||
| var splitPosition = (e.clientX - dragStartX) / slider.parentElement.offsetWidth; | ||
| slider.style.left = 100.0 * splitPosition + "%"; | ||
| viewer.scene.imagerySplitPosition = splitPosition; | ||
| } | ||
| //Sandcastle_End | ||
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| Sandcastle.finishedLoading(); | ||
| } | ||
| if (typeof Cesium !== "undefined") { | ||
| startup(Cesium); | ||
| } else if (typeof require === "function") { | ||
| require(["Cesium"], startup); | ||
| } | ||
| </script> | ||
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| </body> | ||
| </html> |
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| Original file line number | Diff line number | Diff line change |
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@@ -7,12 +7,38 @@ define([ | |
| 'use strict'; | ||
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| /** | ||
| * Enumerates all possible filters used when magnifying WebGL textures, which takes places when zooming | ||
| * into imagery. Provides the possible values for the {@link ImageryLayer#magnificationFilter} property. | ||
| * | ||
| * @exports TextureMagnificationFilter | ||
| * | ||
| * @see TextureMinificationFilter | ||
| * @see ImageryLayer#magnificationFilter | ||
| */ | ||
| var TextureMagnificationFilter = { | ||
| /** | ||
| * Nearest neighbor sampling of image pixels to texture. | ||
|
There was a problem hiding this comment. In this file and below, try to avoid providing reference doc that is just a repeat of the enum. @lilleyse could you add a tad more description and trade offs, e.g., visual quality vs speed? |
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| * | ||
| * @type {Number} | ||
| * @constant | ||
| */ | ||
| NEAREST : WebGLConstants.NEAREST, | ||
| /** | ||
| * Bi-linear interpolation of image pixels to texture. | ||
| * | ||
| * @type {Number} | ||
| * @constant | ||
| */ | ||
| LINEAR : WebGLConstants.LINEAR, | ||
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| /** | ||
| * Validates the given <code>textureMinificationFilter</code> with respect to the possible enum values. | ||
| * | ||
| * @private | ||
| * | ||
| * @param textureMagnificationFilter | ||
| * @returns {Boolean} <code>true</code> if <code>textureMagnificationFilter</code> is valid. | ||
| */ | ||
| validate : function(textureMagnificationFilter) { | ||
| return ((textureMagnificationFilter === TextureMagnificationFilter.NEAREST) || | ||
| (textureMagnificationFilter === TextureMagnificationFilter.LINEAR)); | ||
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@lilleyse this
@see- and the one inTextureMinificationFilter.js- is not needed and not customary. Can you please remove in master?