A three dimensional shape with two flat ends that are circular. The cylinder has the same cross-section from one end to the other, extending about the Z axis.

Learn about cylinders at MathIsFun.com

The radius specifies the circular size about the Z axis, while the height specifies the size. Cylinders can be created at a requested center. The segments specify the number of segments to create per full rotation.

Defaults:

• radius : 1
• height : 2
• center : [0, 0, 0]
• segments : 32

const { cylinder } = require('@jscad/modeling').primitives
 
const myshape = cylinder({radius: 5, height: 10})
const myshape = cylinder({radius: 5, height: 10, center: [5, 5, 5], segments: 64})

Various cylindrical shapes can be created using the elliptical cylinder, including cylinders with changing radius (cones).

Defaults:

• height : 2
• startRadius : [1, 1]
• endRadius : [1, 1]
• center : [0, 0, 0]
• segments : 32
• startAngle : 0
• endAngle : PI * 2

const { cylinderElliptic } = require('@jscad/modeling').primitives
 
const myshape = cylinderElliptic({height: 2, startRadius: [10, 5], endRadius: [8, 3]})

Cylinders can be created with rounded ends by specifying roundRadius.

Defaults:

• radius : 1
• height : 2
• roundRadius: 0.5
• center : [0, 0, 0]
• segments : 32

const { roundedCylinder } = require('@jscad/modeling').primitives
 
const myshape = roundedCylinder({radius: 5, height: 10, roundRadius: 0.5})
const myshape = roundedCylinder({radius: 5, height: 10, roundRadius: 0.5, center: [5, 5, 5], segments: 64})