GEOM320 Reference system transformations

CALL GMTOD (XM,XD*,IFLAG)

XM

( REAL) array of 3 containing the input position ( IFLAG=1) or direction cosines ( IFLAG=2) in the Master Reference System;

XD

( REAL) array of 3 containing the output position ( IFLAG=1) or direction cosines ( IFLAG=2) in the (current) Daughter Reference System;

IFLAG

( INTEGER) transformation flag:

1

input is a position, it must be translated and rotated;

2

input is a direction, it must be rotated.

This routine transform coordinates or directions from the MRS to the reference system of the current volume. The /GCVOLU/ must be properly filled, either by the tracking routines, by GMEDIA or by GLVOLU.

CALL GDTOM (XD,XM*,IFLAG) Performs the inverse operation to GMTOD.

GEOM400