How to Implement Smooth Fade-Out for Draggable 3D Row in Fullscreen Canvas with Centered Div in R3F?

’m working on a React-Three-Fiber (R3F) project where I have a draggable row of 3D elements, and I want the elements to smoothly fade out when they are dragged out of view.

The setup I have is as follows:

  • Fullscreen Canvas: The main canvas occupies the entire screen, rendering the 3D elements.
  • Centered Container: I also have a smaller container (a div) that centers the 3D row of elements on larger screens. The row of 3D elements takes the width of this container, and they are draggable horizontally.
  • The 3D row should fade out gradually when dragged outside of the viewable area.
  • Additionally, the HTML elements (using <Html> from Drei) associated with the 3D models should fade out along with the 3D meshes when they leave the view.