3D Solar System Simulation

This project is a 3D Solar System simulation created using Three.js. It features realistic textured planets orbiting around the Sun with adjustable orbit speeds and interactive camera controls.

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Features

• 3D realistic Sun and planets with textures.
• Planets orbit around the Sun at different speeds and distances.
• Adjustable speed sliders for each planet.
• Pause and resume animation.
• Interactive camera controls using mouse (OrbitControls).
• Responsive canvas sized to 80% of the browser viewport height.

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Technologies Used

• JavaScript (ES6 modules)
• Three.js (version 0.155.0)
• WebGL rendering
• HTML & CSS for UI controls

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Setup & Usage

Prerequisites

• A modern web browser with ES6 module support (Chrome, Firefox, Edge, Safari).
• Local or remote web server to serve files (due to module imports and texture loading).

Run Locally

1. Clone or download the project folder.
2. Ensure the following structure for textures inside a textures folder:
   • sun.jpg
   • mercury.jpg
   • venus.jpg
   • earth.jpg
   • mars.jpg
   • jupiter.jpg
   • saturn.jpg
   • uranus.jpg
   • neptune.jpg
   • ring.png (for Saturn and Uranus rings)
3. Serve the folder using a local server (e.g., VSCode Live Server, python -m http.server, etc.).
4. Open index.html in the browser.

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Code Overview

• Scene setup: A Three.js scene with PerspectiveCamera and WebGLRenderer.
• Lighting: A bright PointLight at the Sun's location plus ambient light.
• Sun: A textured sphere mesh acting as the center.
• Planets: Each planet is a textured sphere mesh, positioned based on distance and angle around the Sun.
• Animation: Each planet orbits the Sun by updating position in a circular path with a unique speed.
• Controls: Sliders allow adjusting the orbital speed of each planet dynamically.
• Pause/Resume: Button toggles animation pause and resume.
• OrbitControls: User can rotate, zoom, and pan the view with mouse.

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Usage Instructions

• Use the sliders to increase or decrease the orbital speed of any planet.
• Click the "Pause" button to stop the animation; it toggles to "Resume" to continue.
• Click and drag the mouse on the canvas to rotate the camera view.
• Scroll to zoom in and out.
• The simulation automatically adapts to your browser window size.

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