Download ODEON Room Acoustics Program

;environment - then coordinate values will be the same in the Editor as inside the 3DView in ODEON
.....model data.......
.....model data.......
###
CoordSys statement
The CoordSys statement is used if you wish to redefine the orientation or the coordinate system
in which the geometry was modelled. The statement is typically used if the geometry was ‘by
accident’ modelled in an orientation different from the one assumed by ODEON or if it was
imported from a CAD drawing where the orientation may also be different. To obtain the
easiest operation inside ODEON the following orientation should be
used (using a concert hall as the example):
Z



X-axis pointing towards the audience
Y-axis pointing to the right as seen from the
audience
Z-axis pointing upwards
O
X
Y
The syntax is:
CoordSys <X> <Y> <Z>
where X, Y, Z indicate which axis should be used as the x, y and z axis inside ODEON. X, Y
and Z may also have a sign to indicate that the axis should point in the opposite direction.
Example 1, the default orientation (which is assumed by ODEON if the CoordSys statement is not
used in the geometry file):
CoordSys X Y Z
Example 2, changing the direction of the X-axis:
CoordSys -X Y Z
Example 3, Swapping the X and the Z-axis
CoordSys Z Y X
Example 4, The CoordSys statement may be used more than once in the same
.par
file:
###
CoordSys -X Y Z
;e.g. if the X axis was inverted in imported model data
.....model data.......
.....model data.......
;resetting the coordinate system to the default
CoordSys X Y Z
; model data appended in the ODEON editor / modelling environment
;it is most practical if using the default Coordinate system when modelling in the ODEON ;environment - then coordinate
system will have the same orientation in the ODEON editor as well as in the 3DView inside ODEON.
.....model data.......
.....model data.......
###
User coordinate system
The UCS command is mostly there for compatibility with previous versions of ODEON – the
coordinate manipulation functions MTranslate, MRotateX, MRotateY, MRotateZ, MScale, MPop and MReset
included from version 4.21 allow far more flexibility. For your own sanity it is not adviceable to
mix the UCS method with the M-family method.
The UCS command must follow the syntax:
UCS <TranslateX><TranslateY><TranslateZ><RotateZ>
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