ROTPOINT

Name

rotpoint

Purpose

Rotate x,y,z point(s) about arbitrary axis.

Description

Calling Sequence

rotpoint,x,y,z,axis,angle,xp,yp,zp

Inputs

x - Cartesian x-coordinate of point.
y - Cartesian y-coordinate of point.
z - Cartesian z-coordinate of point.
axis - Axis to rotate about:
'x' or 'X' or 0 - indicates rotation about x-axis
'y' or 'Y' or 1 - indicates rotation about y-axis
'z' or 'Z' or 2 - indicates rotation about z-axis
angle - Angle to rotate by (scalar). Radians unless /DEG is set.

Optional Input Parameters

Keyword Input Parameters

DEG - flag, if true indicates angle is in degrees, otherwise angle is
taken to be in radians.

Outputs

xp - Rotated x-coordinates.
yp - Rotated y-coordinates.
zp - Rotated z-coordinates.

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

Written by Marc W. Buie, Lowell Observatory, 1995/01/04
2015/03/17, MWB, changed to allow integer or long inputs