Description This command specifies the diffraction efficiency file to be used for a grating surface whose efficiency table type is "Full efficiency table". If the target grating surface has a simple efficiency table definition, calling this subroutine on that surface will change the efficiency table type to "Full efficiency table" and set the source file. Gratings have a primary and secondary efficiency specification that allows an accounting of which side of the grating a ray is incident from. This script command modifies the secondary efficiency specification. For more information, refer to the gratings help topic.
Syntax SetDiffractEfficiencyFileSecondary gratNode, efficiencyFile
Parameters gratNode As Long Node number of the grating surface whose diffraction efficiency table is being modified.
efficiencyFile As String Full path name to the file which is being loaded into the efficiency table.
Example The following example specifies the path to a grating efficiency file and instructs a grating surface node to use the contents of the file in its efficiency table.
Sub Main
Dim fName As String fName = GetDocDir() & "\test_1order_1.0_azi0-360.txt"
Dim gratNode As Long gratNode = FindFullName( "Geometry.Plane-NewGrating.Surface" )
SetDiffractEfficiencyFileSecondary gratNode, fName
End Sub
See Also Diffraction Grating Script Commands
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