Simulate with complex geometries and complex physics
SAVE_CoordinateSystem
saving relative to specified coordinate system (movement)
By default the results are saved relative to the standard coordinate system (no movement). For each SAVE_format a specific coordinate system
for saving can be defined by
n: assigns this attribute to SAVE_format(n)
$MOVEFlag$: reference to given MOVE-statement, defines the coordinate system relative to which the results are saved
Example:
Camera option
The user has the option to define a camera coordinate system. The default camera coordinate system is the global coordinate system that moves with the movement as defined in the $MOVEFlag$ . The result geometry is displayed with respect to the local coordinates of this camera coordinate system.
The user defined camera coordinate sytem is given as
where
Ox, Oy, Oz :: coordinates of the origin of the camera coordinate sytem
Nx, Ny, Nz :: first unit direction of the camera coordinate sytem
Ax, Ay, Az :: second unit direction of the camera coordinate sytem
Bx, By, Bz :: third unit direction of the camera coordinate sytem
Mapping of %SAVE_vector% items
If coordinate transformation is chosen, the user might want to map also %SAVE_vector% items into the camera coordinate system.
SAVE_CoordinateSystem(n) = $MOVEFlag$
SAVE_format(1) = 'ENSIGHT6 BINARY N---'
SAVE_CoordinateSystem(1) = $MOVE_vconst$
...
MOVE($MOVE_vconst$) = (%MOVE_velocity%, 0.0, 0.0, 1.0)
SAVE_CoordinateSystem = $MOVE_vconst$ , Ox, Oy, Oz, Nx, Ny, Nz, Ax, Ay, Az, Bx, By, Bz
- mapping vectors on a geometrical basis -> the item reference must contain "CoordTransGeo"
SAVE_ITEM = ( %SAVE_vector%,[Y%ind_n(1)%], [Y%ind_n(2)%], [Y%ind_n(3)%], "normal") # no coordinate transformation of the normal is performed SAVE_ITEM = ( %SAVE_vector%,[Y%ind_n(1)%], [Y%ind_n(2)%], [Y%ind_n(3)%], "normal_CoordTransGeo") # perform geometrical coordinate transformation (same way as the positions are transformed)
- mapping velocity based vectors -> the item reference must contain "CoordTransV"
SAVE_ITEM = ( %SAVE_vector%,[Y%ind_v(1)%], [Y%ind_n(2)%], [Y%ind_v(3)%], "velocity") # velocity vector will not be transformed SAVE_ITEM = ( %SAVE_vector%,[Y%ind_v(1)%], [Y%ind_v(2)%], [Y%ind_v(3)%], "velocity_CoordTransV") # velocity vector will be transformed taking into account the travel velocity of the camera reference s