Database Management
Reference Manual
Expressions
:
Positions, Directions and Orientations in Expressions
: Orientations
Orientations
The basic ways of defining an orientation are:
•
Orientation attribute plus optional WRT. For example:
ORI OF /BOX1 WRT /*
•
Cartesian orientation. For example:
dir IS dir AND dir IS dir
•
For example to set an orientation of an element to that of a section, rotated by 90 degrees use:
(E IS U WRT /SCTN1 AND N IS E WRT /SCTN1)
•
The AXES keyword, which will allow you to use P-points to specify orientations.
•
The syntax is:
----<---------.
/ |
>-- AXES --*--- PArrive ---|
| |
|--- PLeave ----|
| |
|--- PTail -----|
| |
|--- HHead -----|
| |
|--- HTail -----|
| |
‘--- PPOINT n --+-- OF - <gid> ---->
•
An example is:
( AXES PLEAVE IS AXES PLEAVE OF PREV AND AXES P3 IS UP )
•
This will orient a branch component, such as a valve, so that it is aligned with the previous component and its P3 is up.
See also
Compare Positions
.
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