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orbity.html
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orbity.html
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<html>
<head>
<style>
html, body {
overflow: hidden;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#renderCanvas {
width: 100%;
height: 100%;
touch-action: none;
}
.defbutton
{
border: 2px solid #53adfc4d;
background: #c4e3ff66;
color: white;
font-weight: bold;
box-shadow: inset 0px 0px 6px 2px #53adfc4d;
text-shadow: 0px 0px 3px black;
width: 100%;
}
.defbutton:hover
{
border: 2px solid #53adfc4d;
background: #53adfc99;
color: white;
font-weight: bold;
box-shadow: inset 0px 0px 6px 2px #53adfc4d;
text-shadow: 0px 0px 3px black;
width: 100%;
}
</style>
</head>
<body>
<script src="http://cdnjs.cloudflare.com/ajax/libs/three.js/r69/three.js"></script>
<script src="orbit.js"></script>
<script>
var Models = [];
var Orbits = [];
var lastUpdate = Date.now();
var scale = 10000;
var timeScale = 50;
var objScale = 10000;
var au = 149597871.0;
var eStep = 0.5;
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera( 90, window.innerWidth / window.innerHeight, 0.1, 10000000);
var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.shadowMapEnabled = true;
renderer.shadowMapType = THREE.PCFSoftShadowMap;
document.body.appendChild( renderer.domElement );
function elipsaIncl(a, b, perihelion, barva, incl)
{
var n = Math.sqrt((a * a) - (b * b));
var m = 0;
for(var t = 0; t < 10; t+=eStep)
{
var x = n + a * Math.cos(t);
var z = m + b * Math.sin(t);
var y = x * Math.tan(incl);
var geometry = new THREE.Geometry();
geometry.vertices.push(new THREE.Vector3(x, y, z));
x = n + a * Math.cos(t + 0.05);
z = m + b * Math.sin(t + 0.05);
y = x * Math.tan(incl);
geometry.vertices.push(new THREE.Vector3(x, y, z));
material = new THREE.LineBasicMaterial( { color: barva } );
var line = new THREE.Line(geometry, material);
scene.add(line);
}
}
function asteroidBelt(a, b, barva, diameter, count)
{
a = a * 149597871.0 / scale;
b = b * 149597871.0 / scale;
diameter = diameter * 149597871.0 / scale;
var particles = new THREE.Geometry();
var particle;
var incl = 0.1;
var x, y, z;
var d_param = diameter / 2;
var p2 = 0.5 * count;
var tmp;
for(var i = 0; i < count; i++)
{
tmp = (i / p2) * (2 * Math.PI);
x = a * Math.cos(tmp) + (Math.random() * diameter - d_param);
z = b * Math.sin(tmp) + (Math.random() * diameter - d_param);
if(i % 10 == 0) y = (Math.random() * 8) - (Math.random() * 8);
else if(i % 100 == 0) y = (Math.random() * 20) - (Math.random() * 20);
else y = (Math.random() * 2) - (Math.random() * 2);
y+=Math.tan(incl) * x;
particle = new THREE.Vector3(x, y, z);
particles.vertices.push(particle);
}
var material = THREE.ParticleBasicMaterial({color: barva, size: 0.01});
var particleSystem = new THREE.PointCloud(particles, material);
return particleSystem;
}
function largeBody(nazev, r, barva)
{
//r = (r / scale);
r = 500;
var bodyGeom = new THREE.SphereGeometry( r, 32, 32 );
var bodyMaterial = new THREE.MeshBasicMaterial( {color: barva} );
var body = new THREE.Mesh( bodyGeom, bodyMaterial );
body.name = nazev;
return body;
}
function planetPosition(dny, per, incl, a, b)
{
var n = Math.sqrt((a * a) - (b * b));
var m = 0;
var pd = 360.0 / per;
var rad = -(pd * dny) * Math.PI / 180;
var x = n + a * Math.cos(rad);
var z = m + b * Math.sin(rad);
var y = x * Math.tan(incl);
x = x * 149597871.0 / scale;
y = y * 149597871.0 / scale;
z = z * 149597871.0 / scale;
return new THREE.Vector3(x, y, z);
}
function orbit(smaa, smia, incl, period, barva)
{
this.smaa = smaa; this.smia = smia; this.incl = incl; this.barva = barva; this.period = period;
};
function orbitAu(smaa, smia, perihelion, incl, period, barva)
{
elipsaIncl((smaa * au / scale), (smia * au / scale), perihelion, barva, incl);
Orbits[Orbits.length] = new orbit(smaa, smia, incl, period, barva);
}
function orbitEccAu(smaa, ecc, incl, period, barva, step)
{
var smia = Math.sqrt((smaa * smaa) - (ecc * ecc));
elipsaIncl((smaa * au / scale), (smia * au / scale), barva, incl);
Orbits[Orbits.length] = new orbit(smaa, smia, incl, period, barva);
}
function buildAxis( src, dst, colorHex, dashed ) {
var geom = new THREE.Geometry(),
mat;
if(dashed) {
mat = new THREE.LineDashedMaterial({ linewidth: 3, color: colorHex, dashSize: 3, gapSize: 3 });
} else {
mat = new THREE.LineBasicMaterial({ linewidth: 3, color: colorHex });
}
geom.vertices.push( src.clone() );
geom.vertices.push( dst.clone() );
geom.computeLineDistances(); // This one is SUPER important, otherwise dashed lines will appear as simple plain lines
var axis = new THREE.Line( geom, mat, THREE.LinePieces );
return axis;
}
function buildAxes( length )
{
var axes = new THREE.Object3D();
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( length, 0, 0 ), 0xFF0000, false ) ); // +X
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( -length, 0, 0 ), 0xFF0000, true) ); // -X
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, length, 0 ), 0x00FF00, false ) ); // +Y
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, -length, 0 ), 0x00FF00, true ) ); // -Y
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, 0, length ), 0x0000FF, false ) ); // +Z
axes.add( buildAxis( new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, 0, -length ), 0x0000FF, true ) ); // -Z
return axes;
}
var smt = buildAxes(50);
scene.add(smt);
camera.position.y = 29713;
camera.position.x = 2175;
camera.position.z = 28852;
camera.scale.z = 1.1;
var Time = 0;
renderer.shadowMapEnabled = true;
camera.lookAt(new THREE.Vector3(0, 0, 0));
var controls = new THREE.OrbitControls( camera );
orbitAu( 0.38709893, 0.37882650, 0.30749951, 0.0589921, 87.969, 0xAEA6A4);
orbitAu( 0.72333199, 0.72331540, 0.7184327 , 0.0673697, 224.701, 0xC9A072);
orbitAu( 1.00000011, 0.99986048, 0.98328989, 0.1248783, 365.14, 0xFFFFFF);
orbitAu( 1.52366231, 1.51700011, 1.38133346, 0.0986111, 686.971, 0xB24F14);
orbitAu( 5.20336301, 5.19726669, 4.95155843, 0.1062905, 4332.59, 0x8A7B74);
orbitAu( 9.53707032, 9.52307730, 9.020632, 0.0961676, 10759.22, 0xE1CBCE);
orbitAu(19.19126393, 19.16990375, 18.286056, 0.1130973, 30687.15, 0xD4FAFB);
orbitAu(30.06896348, 30.06785516, 29.810795, 0.1122246, 60190.03, 0x72A9FB);
orbitAu(17.8341443, 4.534034, 0.5859781, 2.83266938, 27503.325, 0x72A9FB);
//elipsaIncl2(17.8, 4.534034, -0.589, 0, 2.83266938, 0xFFFFFF);
Models[0] = largeBody("Slunce", 696342.0, 0xFFFFFF);
Models[1] = largeBody("Merkur", 2439.7, 0xAEA6A4);
Models[2] = largeBody("Venuše", 6051.8, 0xC9A072);
Models[3] = largeBody("Země", 6378.7, 0xFFFFFF);
Models[4] = largeBody("Mars", 3389.5, 0xB24F14);
Models[5] = largeBody("Jupiter", 69911.0, 0x8A7B74);
Models[6] = largeBody("Saturn", 58232.0, 0xE1CBCE);
Models[7] = largeBody("Uran", 25362.0, 0xD4FAFB);
Models[8] = largeBody("Neptun", 24622.0, 0x72A9FB);
Models[9] = largeBody("Halleyova Kometa", 11.0, 0x72A9FB);
Models[10] = asteroidBelt(2.5, 2.5, 0x8A7B74, 2.6, 1000);
Models[11] = asteroidBelt( 60, 60, 0x8A7B74, 50, 2000);
/*
var light = new THREE.DirectionalLight( 0xffffff, 1 );
light.position.set(1000, 1000, 1000);
light.castShadow = true;
light.shadowCameraVisible = true;
scene.add(light);
light.target = Models[1];
*/
for(var i = 0; i < Models.length; i++)
{
scene.add(Models[i]);
}
function render()
{
var now = (Date.now() / 86400000) + ((scale - 1) * Time/86400);
for(var i = 1; i < Models.length; i++)
{
try
{
var pozice = planetPosition(now, Orbits[i - 1].period, Orbits[i - 1].incl, Orbits[i - 1].smaa, Orbits[i - 1].smia);
Models[i].position.x = pozice.x;
Models[i].position.y = pozice.y;
Models[i].position.z = pozice.z;
}catch (err)
{
}
}
requestAnimationFrame( render );
renderer.render( scene, camera );
Time++;
}
render();
function addBody()
{
var a = document.getElementById("a").value;
var b = document.getElementById("b").value;
}
</script>
<div class="controls" style="position:absolute; color:white; right:0px; width:200px; bottom:0px;" onmouseover="controls.enabled = false;" onmouseleave="controls.enabled = true;">
<button class="defbutton">Test</button>
</div>
</body>
</html>