75 lines
2.5 KiB
HTML
75 lines
2.5 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta
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name="viewport"
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content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
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/>
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<meta
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name="description"
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content="Add HTML overlay using canvas coordinates."
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/>
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<meta name="cesium-sandcastle-labels" content="Tutorials" />
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<title>Cesium Demo</title>
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<script type="text/javascript" src="../Sandcastle-header.js"></script>
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<script
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type="text/javascript"
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src="../../../Build/CesiumUnminified/Cesium.js"
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nomodule
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></script>
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<script type="module" src="../load-cesium-es6.js"></script>
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</head>
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<body
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class="sandcastle-loading"
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data-sandcastle-bucket="bucket-requirejs.html"
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>
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<style>
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@import url(../templates/bucket.css);
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</style>
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<div id="cesiumContainer" class="fullSize"></div>
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<div id="loadingOverlay"><h1>Loading...</h1></div>
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<div id="toolbar"></div>
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<img
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id="htmlOverlay"
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style="position: absolute"
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src="../images/Cesium_Logo_overlay.png"
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/>
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<script id="cesium_sandcastle_script">
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window.startup = async function (Cesium) {
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"use strict";
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//Sandcastle_Begin
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const viewer = new Cesium.Viewer("cesiumContainer");
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// To geographically place an HTML element on top of the Cesium canvas, we use
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// scene.cartesianToCanvasCoordinates to map a world position to canvas x and y values.
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// This example places and img element, but any element will work.
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const htmlOverlay = document.getElementById("htmlOverlay");
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const scratch = new Cesium.Cartesian2();
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viewer.scene.preRender.addEventListener(function () {
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const position = Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883);
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const canvasPosition = viewer.scene.cartesianToCanvasCoordinates(
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position,
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scratch
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);
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if (Cesium.defined(canvasPosition)) {
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htmlOverlay.style.top = `${canvasPosition.y}px`;
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htmlOverlay.style.left = `${canvasPosition.x}px`;
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}
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});
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//Sandcastle_End
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};
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if (typeof Cesium !== "undefined") {
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window.startupCalled = true;
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window.startup(Cesium).catch((error) => {
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"use strict";
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console.error(error);
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});
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Sandcastle.finishedLoading();
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}
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</script>
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</body>
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</html>
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