Creo Simulate > Reference Links > Coordinates for Spherical UCS
Coordinates for Spherical UCS
When a spherical coordinate system is active, you enter coordinates in the order R, T, P, where:
R is the distance from the point to the origin.
T() is the angle from the T = 0 axis in a plane defined by the point, the origin, and the T = 0 axis (enter in degrees).
P() is the angle between the P = 0 axis and the line connecting the point as projected onto the T = 90 plane (enter in degrees).
The following illustration shows a location (A) in spherical coordinates:
Note that the P = 0 axis is the line along which P = 0 and T = 90, and the P = 90 axis is the line along which P = 90 and T = 90.
The following illustration shows you how to determine the direction of the unit vectors for theta and phi using the right hand rule (r,,).