*CYCLIC

Required parameters

NC

Set this parameter equal to the number of cyclically similar images that compose the cavity formed as a result of this symmetry. The angle of rotation (about a point or an axis) used to create cyclically similar images is equal to 360°/NC.

TYPE

Set TYPE=POINT to create a two-dimensional cavity by cyclic repetition of the cavity surface defined in the model by rotation about a point, l. See Figure 1. The cavity surface defined in the model must be bounded by the line $l k$ and a line passing through l at an angle, measured counterclockwise when looking into the plane of the model, of 360°/NC to $l k$ .

Set TYPE=AXIS to create a three-dimensional cavity by cyclic repetition of the cavity surface defined in the model by rotation about an axis, $l m$ . See Figure 2. The cavity surface defined in the model must be bounded by the plane $l m k$ and a plane passing through line $l m$ at an angle, measured clockwise when looking from l to m, of 360°/NC to $l m k$ . Line $l k$ must be normal to line $l m$ .

Data line to define cyclic symmetry for a two-dimensional cavity (TYPE=POINT)

First (and only) line

x-coordinate of rotation point l (see Figure 1).
y-coordinate of rotation point l.
x-coordinate of point k.
y-coordinate of point k.

Data lines to define cyclic symmetry for a three-dimensional cavity (TYPE=AXIS)

First line

x-coordinate of point l on rotation axis (see Figure 2).
y-coordinate of point l on rotation axis.
z-coordinate of point l on rotation axis.
x-coordinate of point m on rotation axis.
y-coordinate of point m on rotation axis.
z-coordinate of point m on rotation axis.

Second line

x-coordinate of point k.
y-coordinate of point k.
z-coordinate of point k.