Use a 2D Keyboard in 3D -
Add 2D interactivity on any 3D surface in three.js with ZIM TextureActive. Visit the TextureActive Studio at https://zimjs.com/studio to see how! Here we show a Wrapper() inside a Window(). ZIM has a soft Keyboard() that lets you type into a single-line Label. Also see the Studio TextInput() example for an alternative. Multi-line usually can be done with TextArea() which is an HTML overlay - but it is not supported in TextureActive.
See https://zimjs.com/015 for an intro to TextureActives.
ZIM at https://zimjs.com is a JavaScript Canvas Framework - code creativity - visit us at https://forum.zimjs.com for questions and more examples!