5.1.4 Cylinder

The syntax of the cylinder object is:

CYLINDER:
  cylinder { BASE_CENTER, CAP_CENTER, RADIUS [open] 
    [OBJECT_MODIFIERS] }

See also:

• [pov:6.5.1.4]Cylinder
• [pov:3.2.3]Cylinder Object
• www.f-lohmueller.de/.../cylindr1e.htm

This describes a circular cylinder orthogonal to the axes from BASE_CENTER (=V0) to the CAP_CENTER (=V1) with radius RADIUS (=R), e.g.

$$\verb'cylinder' \{ 0, y, R \} = \{\langle X,Y,Z\rangle:X^2+Z^2\leq R^2,\,0\leq Y\leq 1\}$$

Figure: Cylinders

The optional keyword open makes the cylinder hollow and removes the base and cap disk.

Figure: Open Cylinders

The general cylinder can be obtained from `cylinder { 0, y, 1 }' by scaling, rotation and translation.