'How to create curvature on a plane in three.js?

Defining a value for width segment and height segment seem to create sub-divisions within the plane with normalized vectors if I'm correct. How do I manipulate the direction of these vectors to create a curvature? I'm using this.



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source