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RT 3CO - Calculates composite rotation of a series of rotations

(3/26/96)

PURPOSE

It calculates the composite rotation of an unlimited number of 3-D rotations that have been obtained successively through an iterative procedure (as the one performed by 'OR 3')

WARNING

This program gives slightly incorrect results, is very slow and uses incorrect interpolation scheme. Use RT 3D instead.

SEE ALSO

RT [Rotate, Use average as background]
RT B [Rotate, Supply background]
RT M [Rotate, Use minimum background]
RT C [Rotate, Center selected by user]
RT 3 [Rotate a volume]
RT 3D [Rotate a volume by three Eulerian angles]
RT 90 [Rotate a volume by 90, 180, or 270 degrees]
RT SQ [Rotate and shift using quadratic interpolation]

USAGE

.OPERATION: RT 3CO

.INPUT1 FILE: PIC001
[Enter the name of the file to be rotated.]

.OUTPUT FILE: ROT001
[Enter the name of the file where the COMPOSITE rotated volume is to be kept.]

.ALPHA: 10.5
[Enter the rotation angles alpha (around Z) of an individual rotation.]

.BETA: 20.4
[Enter the rotation angle around new Y.]

.GAMMA: 15.2
[Enter the rotation angle around new new Z.]

[The program prompts at this step the composite rotation angles.]

.NEW ANGLES?(Y/N): Y
[Enter Y if another rotation is going to follow. Enter N if the former one was the last.]

.FINAL ROTATION?(Y/N):Y
[Enter 'Y' if you want the final rotation (the one that has been prompted before) to be applied to the output volume. If you enter 'N' the output volume remains empty (useful if you only wanted to know which was the composite rotation .]

NOTES

  1. In the present state it does not consider translations, hence the identity of alpha and gamma to be included.

SUBROUTINES

ROT3, ROT32

CALLER

UTIL3

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