Wednesday, January 25, 2023

How To Code A Threejs Galaxy Particle System Using HTML and JavaScript

Creating a 3D spinning galaxy using Three.js and galaxy images is a great way to add a visually stunning element to your project. Here are the steps you can follow to create your own spinning galaxy

Start by importing the necessary modules. You will need the Three.js library, as well as any additional modules you want to use, such as the OrbitControls module for camera controls.

  1. Set up your Three.js scene, camera, and renderer. The scene is where all the elements of your galaxy will be placed, the camera is used to view the scene, and the renderer is used to render the scene to the screen.
  2. Create a texture loader and set the cross-origin property to an empty string.
  3. Create a new group object which will hold all the galaxy elements.
  4. Create a new texture using the texture loader and set it to your galaxy image.
  5. Create a new material using the texture you created in step 5, and apply it to the sphere geometry.
  6. Create a new mesh using the sphere geometry and material, and add it to the group object.
  7. Set up the orbital controls for your camera. This will allow you to move and rotate the camera around the galaxy.
  8. Define the animate() function and set it to call the requestAnimationFrame() method. Within this function, rotate the group object on the z-axis and render the scene using the renderer.
  9. Finally, call the animate() function to start the animation and display the 3D spinning galaxy on the screen.

It's important to note that you can customize this code according to your needs, for example you can change the galaxy image by using different images or even videos and you can also change the rotation speed.

With these steps, you should be able to create your own 3D spinning galaxy using Three.js and galaxy images. Good luck!

HTML and JavaScript Example.  This code is all you need to run this particle system.

The code I provided earlier is an example of how to create a 3D spinning galaxy particle system using Three.js. It is important to note that along with the JavaScript code, you will also need to include the necessary HTML and CSS code to set up the webpage where the galaxy will be displayed.

It's also important to note that this example is just one way to create a 3D spinning galaxy and that you can customize it to create different types of galaxies by changing the galaxy image, adjusting the camera controls, changing the rotation speed, and much more.

You can also use this code as a starting point and build upon it to create more complex and interesting galaxy animations.

In short, the example code demonstrates how to create a 3D spinning galaxy particle system using Three.js and galaxy images, and HTML and javascript code that is necessary to display it on a webpage.

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