Example 1: test using rotatept to modify a point distribution.

The objective is to use the **rotatept** command to modify a point
distribution by rotation.

The output consists of three gmv files, one showing the original point
distribution, one showing a rotation in the xy-plane, and one showing
a rotation away from the z-axis, each using **rotatept/rtz**.

Input

Images of GMV input and output

Initial point distribution

rotation in xy-planed

rotation in xy-plane and away from z-axis