$triregiontype

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The $triregiontype is defining the triangular shape range's arrange method. The format is

$triregiontype
@type  @periodnumber @period_spacing(\mu m)
...
...   repeat the number of triangular region number $triregionnumber


@type: 
1 : triangular , period along x if the periodnumber >1 
11 : triangular , period along y if the periodnumber >1 
2 : circular shape, period along x if the periodnumber >1 
21 :   circular shape, period along y if the periodnumber >1 
3 : elliptic shape, period along x if the periodnumber >1 
31 :   elliptic shape, period along y if the periodnumber >1 
4 : rectangular shape, period along x if the periodnumber >1 
41 :   rectangular shape, period along y if the periodnumber >1 
5:  sin kx function up, the shape is defined by x_left, x_right, y>sinkx and y<y2
6:  sin kx function down, the shape is defined by x_left, x_right, y<sinkx and y>y2
7:  sin ky function up (be careful to use it), the shape is defined by y_top, y_bottom, x<sinky and x>x2
8:  sin ky  function right (be careful to use it), the shape is defined by y_top, y_bottom, x<sinky and x>x2

The way to define the type is similar to $empty function

@periodnumber: How many period numbers used
@@period_spacing: The spacing of each period objects. The unit is (\mu m)

The vertex points of aboved types are define in $triranges


Example

$triregionnumber
2

This means that there are two triangular regions. This command must be set after the command $ranges. The "triregionnumber" must be smaller than the "range number".

This command needs to be set before the command before the commands $triregiontype, $triranges,

For example:

$triregionnumber
2
$triregiontype
1 1 2.0
1 5 3.0
$triranges
0.0 0.0 2.0 2.0 4.0 0.0
4.0 6.0 6.0 8.0 8.0 6.0 


x1,y1,x2,y2,x3,y3 are 3 vertex points of triangular