<!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="Add HTML overlay using canvas coordinates."
/>
<meta name="cesium-sandcastle-labels" content="Tutorials" />
<title>Cesium Demo</title>
<script type="text/javascript" src="../Sandcastle-header.js"></script>
<script
type="text/javascript"
src="../../../Build/CesiumUnminified/Cesium.js"
nomodule
></script>
<script type="module" src="../load-cesium-es6.js"></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>
<img
id="htmlOverlay"
style="position: absolute"
src="../images/Cesium_Logo_overlay.png"
/>
<script id="cesium_sandcastle_script">
function startup(Cesium) {
"use strict";
//Sandcastle_Begin
var viewer = new Cesium.Viewer("cesiumContainer");
// To geographically place an HTML element on top of the Cesium canvas, we use
// scene.cartesianToCanvasCoordinates to map a world position to canvas x and y values.
// This example places and img element, but any element will work.
var htmlOverlay = document.getElementById("htmlOverlay");
var scratch = new Cesium.Cartesian2();
viewer.scene.preRender.addEventListener(function () {
var position = Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883);
var canvasPosition = viewer.scene.cartesianToCanvasCoordinates(
position,
scratch
);
if (Cesium.defined(canvasPosition)) {
htmlOverlay.style.top = canvasPosition.y + "px";
htmlOverlay.style.left = canvasPosition.x + "px";
}
});
//Sandcastle_End
Sandcastle.finishedLoading();
}
if (typeof Cesium !== "undefined") {
window.startupCalled = true;
startup(Cesium);
}
</script>
</body>
</html>