Create cone geometry with rectangular base in three.js?

Sarah Smith | February 02, 2026

I want to create the Cone Geometry with rectangular base in three.js. How could I do that?

I'm providing the image here so that i can make some sense what I'm speaking.

enter image description here

1 Answer

Cone with a square base is a specific case of a cylinder with 4 sides and one of the base radius equal to 0.

You can create generic cylinder with:

THREE.CylinderGeometry(radiusTop, radiusBottom, height, radiusSegments, heightSegments, openEnded)

A specific example would be:

THREE.CylinderGeometry(0, 30, 80, 4, 1, true);