cylinder

Creates a new cylinder.

Syntax

cylinder([a[, f[, d[, α]]]])
- a is a three-dimensional real vector
- f is a three-dimensional real vector
- d is a three-dimensional real vector
- α is a real number

cylinder() creates a circular cylinder (quadratic surface) with radius 1 and height 1 parallel to the z axis, extending from z = 0 to z = 1.

cylinder(a, f, d, α) translates the cylinder by a, scales it by diag(f), aligns it with d, and rotates it an amount α about its axis.

Hence,

a specifies the position of centre of the cylinder’s bottom opening.
f = (s, t, h) specifies the half-axis lengths s and t and height h of the cylinder.
d specifies the axis of the cylinder.
α specifies the rotation of the cylinder about its axis.

If omitted, a defaults to ❨0, 0, 0❩, f to ❨1, 1, 1❩, d to ❨0, 0, 1❩, and α to 0.

The object is shown in the current scene and a reference to the object is returned.

The AdjustVisual function can be used to adjust the appearance of the cylinder. See Visual settings for a list of applicable settings.

cylinder()

cylinder(❨5, 5, 0❩, ❨.5, .5, 10❩, ❨−.2, .1, 1❩)

cylinder(❨0, 0, 0❩, ❨1, 1, 5❩);
AdjustVisual(ans, "show parameter curves": true)

To create a solid cylinder, use solid("cylinder") instead.