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In 4.4.70 there will be a new function:
geomReportMarkers(val)
If val is false, then subsequent reporting of error markers is turned off if there is no optional message specified.
So for example
Code:geomReportMarkers(False)
geomWidth(in_layer, 0.010, "width < 0.010")
out_layer = geomWidth(in_layer, 0.020)This will create error markers only if in_layer width is less than 0.010. out_layer will be created if in_layer width is less than 0.020.
What could be done is have a global variable set which disables DRC marker generation unless you specify explicitly a message in the geom… drc command.
You mean the database resolution, not grid.
The default DB units are 0.001um, but you can set them to e.g 0.0005 or 0.0001 when you first create a library. So the import techfile dialog, for example,allows you to set the DB units.
Seriously though I can understand that you might not want the DRC marker generated in this case. The issue is how to control it though – adding a flag to disable generating markers would break backward compatibility with existing run sets. I'm open to any ideas.
Not at the moment, no.
What you really want is width-dependent spacing rules, but they aren't implemented yet either…
I'm not sure what you're trying to do… Maybe you could generate a small example?
The output layer is created with shapes that are the violation shapes. You can use these in subsequent commands.
There is also a shape on the DRC marker layer created with a string property equal to the message, if specified, or something like 'width < 1.0' depending on the rule. This shape/property can't currently be disabled.
Don't specify them?
e.g. out_layer = geomWidth(in_layer, 1.0)
Or do you not want the drc marker shapes generated at all?
Sorry, I was thinking of another rule.
layer = geomLineEnd(layer1, layer2, rule, num_ends, min_adj_edge_length=0.0, flags = 0, const char *message=NULL)
It's not documented but please test it.
you substitute myLayer for the layer name you wish to save. It must be a layer name that exists. You could pick a utility layer like y0-y9 if you don't want to create a new layer in your techfile.
saveDerived() will save to a user-defined layer/purpose if you want, e.g.
Code:saveDerived(layer, "myLayer", "drawing", "layout")this will save to layer/purpose myLayer drawing, in the layout cellView.
You could then in the script write some python code to find all shapes on this layer and sum their areas.
There is no DRC function to find the area of a layer right now.
Only if you use saveDerived() to output the layer polygons to a cellView.
'layers' generated by e.g. geomAnd() are binary files containing the polygons, to access them via Python you have to save them to the database.
