Polygon width measurement

francistian · September 2021

I am doing a project that need automatic tracing of polygon waveguide width. I am thinking about using the ruler with auto-measure function. Now i can generate ruler with the following code

app = RBA::Application.instance
mw = app.main_window
view = mw.current_view
ant = RBA::Annotation::new
register_template(ant,mode = RulerModeAutoMetric)

ant.p1 = RBA::DPoint::new(12930, 1400)
ant.p2 = RBA::DPoint::new(12928, 1392)
view.insert_annotation(ant)

it is possible to make the ruler doing automeasure automatically? Because it can be done manually with just one click so i figure there must be a way.

sekigawa · September 2021

Hi,

Yes, you can automate the auto measure.
Please refer to the following URLs.

1) https://www.klayout.de/forum/discussion/1310/ruby-python-automation-of-auto-measure

2) https://github.com/KLayout/klayout/issues/333

3) https://github.com/KLayout/klayout/pull/335

As Matthias instructed in 3) (quoted below), you can use the LayoutView::create_measure_ruler() method.

The implementation provides a new method called "create_measure_ruler" in LayoutView:

view = RBA::LayoutView::current

# create the ruler with auto-measurement with seed point 111.8/840
ant = view.create_measure_ruler(RBA::DPoint::new(111.8, 840.0))
# style the ruler
ant.style = RBA::Annotation::StyleRuler
...
# remove the ruler
ant.delete

Kazzz-S

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