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Deleted the unfinished html Jupiter imager.

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Don Cross
2022-01-05 20:40:33 -05:00
parent b50a8fdce2
commit 9775206988
1 changed files with 0 additions and 102 deletions
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demo/browser/jupiter.html
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<!DOCTYPE html>
<html>
<head>
<title>Jupiter's Moons</title>
<meta name="viewport" content="width=device-width,maximum-scale=2">
<link rel="stylesheet" href="astro_demo.css" />
</head>
<body>
<div>
<canvas id="GraphCanvas" class="PlotCanvas"></canvas>
</div>
</body>
<script src="astronomy.browser.js"></script>
<script>
window.onload = function() {
const ReservedPixelsBottom = 0;
const graph = document.getElementById('GraphCanvas');
const context = graph.getContext('2d');
const jm_letter = ['I', 'E', 'G', 'C']; // Io, Europa, Ganymede, Callisto.
const jm_radius = [
Astronomy.IO_RADIUS_KM,
Astronomy.EUROPA_RADIUS_KM,
Astronomy.GANYMEDE_RADIUS_KM,
Astronomy.CALLISTO_RADIUS_KM
];
class Ellipsoid {
constructor(center, equ_radius_km, pol_radius_km, letter) {
this.center = center;
this.equ_radius = equ_radius_km / Astronomy.KM_PER_AU;
this.pol_radius = pol_radius_km / Astronomy.KM_PER_AU;
this.letter = letter;
}
}
class RayTracer {
constructor() {
this.bodylist = [];
}
AddPlanet(center) {
this.AddEllipsoid(
center,
Astronomy.JUPITER_EQUATORIAL_RADIUS_KM,
Astronomy.JUPITER_POLAR_RADIUS_KM,
null
);
}
AddMoon(center, radius, letter) {
this.AddEllipsoid(center, radius, radius, letter);
}
AddEllipsoid(center, equ_radius_km, pol_radius_km, letter) {
this.bodylist.push(new Ellipsoid(center, equ_radius_km, pol_radius_km, letter));
}
}
function ResizeGraph() {
// Make the canvas fit the available space inside the browser window.
// Reserve some space below the graph for sliders.
graph.width = window.innerWidth;
graph.height = window.innerHeight - ReservedPixelsBottom;
}
function UpdateScreen() {
// Calculate Jupiter's position, corrected for light travel time.
const now = new Date();
const jup = Astronomy.GeoVector(Astronomy.Body.Jupiter, now, true);
// Use the distance from Jupiter to figure how much light-travel backdating to apply.
const lightdays = jup.Length() / Astronomy.C_AUDAY;
const depart = jup.t.AddDays(-lightdays);
// Calculate Jupiter's moons how they were when light departed Jupiter toward the Earth.
const jm = Astronomy.JupiterMoons(depart);
// Add each object as an ellipsoid to the raytracer model.
// Convert Jupiter's moons coordinates from jovicentric EQJ to geocentric EQJ.
const rt = new RayTracer();
rt.AddPlanet(jup);
for (let i = 0; i < 4; ++i) {
const geo = new Astronomy.Vector(
jm.moon[i].x + jup.x,
jm.moon[i].y + jup.y,
jm.moon[i].z + jup.z,
jm.moon[i].t
);
rt.AddMoon(geo, jm_radius[i], jm_letter[i]);
}
//setTimeout(UpdateScreen, 1000);
}
ResizeGraph();
//window.addEventListener('resize', ResizeGraph);
UpdateScreen();
}
</script>
</html>