Creates a new geometry with the face extruded by the specified distance.
The original face vertices are duplicated and moved along the face normal,
and new side faces are created to connect the original and extruded faces.
Parameters
geometry: BufferGeometry
The original BufferGeometry
faceIndex: number
Index of the face to extrude
distance: number
Distance to extrude (positive = outward along normal)
Extrude a face from a BufferGeometry.
Creates a new geometry with the face extruded by the specified distance. The original face vertices are duplicated and moved along the face normal, and new side faces are created to connect the original and extruded faces.