檢視 $SourceType 的原始碼

=='''Format'''==
 $SourceType
  type    axis    dir    θ    φ    ψ            <font color=green>// ''type'', ''axis'', and ''dir'' are integers, the others are floating.</font>

<font size=3>
  type: 1~4 dual wave: sin, exp, sin*exp, multi-sine; 
        11~14 one dir.: sin, exp, sin*exp, multi-sine;
        21~24 TF/SF
        31~34 cuboid source (not finished)

  axis: 1~3 represents the is along x, y, or z axis.
  ''p.s.'' it is useless for TF/SF source.

  dir: -1 means the wave goes to negative, 
        1 means the wave goes to positive.
  ''p.s.'' it is useless for TF/SF source.
  
the unit of theta, phi, and psi is degree, it will be changed to radians.
[[File: Source_angle.jpg|The meaning of theta, phi, and psi.|left|thumb|500px]]

</font>

=='''Example'''==
 $SourceType
  12	3	-1	0	0

== '''Related commands''' ==
: [[$SourcePosition]], [[$SourceFrequency]]