emackey/Hello Sun.html

## Hello Sun.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">  <!-- Use Chrome Frame in IE -->
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta name="description" content="Place a yellow sphere at the Sun's location">
    <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="../../../ThirdParty/requirejs-2.1.9/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 solarRadiusInMeters = 6.955e8;

var viewer = new Cesium.Viewer('cesiumContainer');

viewer.scene.camera.frustum.far = 1e12;            //Move the far wall of the viewing frustum.

var scene = viewer.scene;
scene.skyBox.show = false;                        // Turn off the sky box
scene.sun.show = false;                           // Don't show the default Sun

// Turn on sun lighting of the globe.
scene.globe.enableLighting = true;

// Create a Yellow rim-lit material.
var material = Cesium.Material.fromType(Cesium.Material.RimLightingType);
material.uniforms.color = Cesium.Color.YELLOW;

// Create Sun graphics primitive.
var sunEllipsoid = scene.primitives.add(new Cesium.EllipsoidPrimitive({
    center: new Cesium.Cartesian3(),  // For now, place the Sun at the origin.
    radii: new Cesium.Cartesian3(solarRadiusInMeters, solarRadiusInMeters, solarRadiusInMeters),
    material: material
}));

// Allocate "new" variables outside of the render loop when possible, to reduce garbage collection.
var sunPosition = new Cesium.Cartesian3();
var icrfToFixedScratch = new Cesium.Matrix3();
var sunModelMatrixScratch = new Cesium.Matrix4();

// Update the camera and the Sun with each animation frame.
function icrf(scene, time) {
    if (scene.mode !== Cesium.SceneMode.SCENE3D) {
        return;
    }

    var icrfToFixed = Cesium.Transforms.computeIcrfToFixedMatrix(time, icrfToFixedScratch);
    if (Cesium.defined(icrfToFixed)) {
        // Update the camera with the new ICRF rotation
        scene.camera.transform = Cesium.Matrix4.fromRotationTranslation(icrfToFixed);

        // Compute Sun position in Inertial.
        Cesium.Simon1994PlanetaryPositions.computeSunPositionInEarthInertialFrame(time, sunPosition);

        // Transform Sun position from Inertial to Fixed.
        Cesium.Matrix3.multiplyByVector(icrfToFixed, sunPosition, sunPosition);

        // Update the Sun's modelMatrix to move it from the origin to its new position for this animation frame.
        sunEllipsoid.modelMatrix = Cesium.Matrix4.fromRotationTranslation(Cesium.Matrix3.IDENTITY, sunPosition, sunModelMatrixScratch);
    }
}
scene.preRender.addEventListener(icrf);
//Sandcastle_End
    Sandcastle.finishedLoading();
}
if (typeof Cesium !== "undefined") {
    startup(Cesium);
} else if (typeof require === "function") {
    require(["Cesium"], startup);
}
</script>
</body>
</html>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1"> <!-- Use Chrome Frame in IE -->
	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
	<meta name="description" content="Place a yellow sphere at the Sun's location">
	<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="../../../ThirdParty/requirejs-2.1.9/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 solarRadiusInMeters = 6.955e8;

	var viewer = new Cesium.Viewer('cesiumContainer');

	viewer.scene.camera.frustum.far = 1e12; //Move the far wall of the viewing frustum.

	var scene = viewer.scene;
	scene.skyBox.show = false; // Turn off the sky box
	scene.sun.show = false; // Don't show the default Sun

	// Turn on sun lighting of the globe.
	scene.globe.enableLighting = true;

	// Create a Yellow rim-lit material.
	var material = Cesium.Material.fromType(Cesium.Material.RimLightingType);
	material.uniforms.color = Cesium.Color.YELLOW;

	// Create Sun graphics primitive.
	var sunEllipsoid = scene.primitives.add(new Cesium.EllipsoidPrimitive({
	center: new Cesium.Cartesian3(), // For now, place the Sun at the origin.
	radii: new Cesium.Cartesian3(solarRadiusInMeters, solarRadiusInMeters, solarRadiusInMeters),
	material: material
	}));

	// Allocate "new" variables outside of the render loop when possible, to reduce garbage collection.
	var sunPosition = new Cesium.Cartesian3();
	var icrfToFixedScratch = new Cesium.Matrix3();
	var sunModelMatrixScratch = new Cesium.Matrix4();

	// Update the camera and the Sun with each animation frame.
	function icrf(scene, time) {
	if (scene.mode !== Cesium.SceneMode.SCENE3D) {
	return;
	}

	var icrfToFixed = Cesium.Transforms.computeIcrfToFixedMatrix(time, icrfToFixedScratch);
	if (Cesium.defined(icrfToFixed)) {
	// Update the camera with the new ICRF rotation
	scene.camera.transform = Cesium.Matrix4.fromRotationTranslation(icrfToFixed);

	// Compute Sun position in Inertial.
	Cesium.Simon1994PlanetaryPositions.computeSunPositionInEarthInertialFrame(time, sunPosition);

	// Transform Sun position from Inertial to Fixed.
	Cesium.Matrix3.multiplyByVector(icrfToFixed, sunPosition, sunPosition);

	// Update the Sun's modelMatrix to move it from the origin to its new position for this animation frame.
	sunEllipsoid.modelMatrix = Cesium.Matrix4.fromRotationTranslation(Cesium.Matrix3.IDENTITY, sunPosition, sunModelMatrixScratch);
	}
	}
	scene.preRender.addEventListener(icrf);
	//Sandcastle_End
	Sandcastle.finishedLoading();
	}
	if (typeof Cesium !== "undefined") {
	startup(Cesium);
	} else if (typeof require === "function") {
	require(["Cesium"], startup);
	}
	</script>
	</body>
	</html>