My approach to simulating the sphere rotating around a point and its own axis simultaneously involved creating a pivot, an Object3D, and adding the sphere as its child. They were both supposed to rotate around their respective axes based on an idea I found on the web.
However, this method proved flawed when considering that the sphere represents the Earth, which has a fixed axial tilt. The axial tilt ended up changing based on the rotation around the pivot.
To illustrate the issue, I created some visual drawings:
INCORRECT:
https://i.sstatic.net/CBfVX.png
CORRECT:
https://i.sstatic.net/ECemL.png
The code snippet used is as follows:
index.php
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title></title>
<?php include_once ('php/includes.php'); ?>
</head>
<body>
<section id="container"></section>
<script>
$(document).ready(function () {
new Space();
});
</script>
</body>
</html>
includes.php
<script type="text/javascript" src="js/libs/jquery/jquery.js" ></script>
<script type="text/javascript" src="js/libs/three/three.js" ></script>
<script type="text/javascript" src="js/libs/orbitcontrols/orbitcontrols.js" ></script>
<script type="text/javascript" src="js/shape/Sphere.js" ></script>
<script type="text/javascript" src="js/shape/Plane.js" ></script>
<script type="text/javascript" src="js/Space.js" ></script>
Space.js
var Space = function() {
this.init();
this.animate();
Space.instance = this;
};
Space.instance;
Space.prototype.getInstance = function() {
return Space.instance;
};
Space.prototype.init = function() {
// Code implementation details here
};
Space.prototype.resize = function() {
// Code resize logic here
};
Space.prototype.animate = function() {
// Animation logic goes here
};
If you're facing this problem, how can it be resolved?