double_clearance()

Measures the distance between edges of polygons on different layers.

See also: dve_drc()

Syntax

dve_drc (double_clearance (inLayer1, inLayer2) operator distance [, msgString] [,qualifierName, qualifierValue...]);

where:

inLayer1 Containing polygon layer
inLayer2 Contained polygon layer
operator < Less than
<= Less than or equal to
== Equal to
> Greater than
>= Greater than or equal to
distance A distance value in layout units
msgString A string value that will be attached to the selected error segments
qualifierName, qualifierValue A name, value pair that qualifies the selection

Edge Qualifier

DVE_RN_POLARITY, DVE_RN_POLARITY_FROM, DVE_RN_POLARITY_TO
DVE_RN_EDGE_ANGLES
DVE_RN_ANGLE_TOLERANCE
DVE_RN_SEPARATE
DVE_RN_TOUCH
DVE_RN_SLOPE, DVE_RN_SLOPE_FROM, DVE_RN_SLOPE_TO
DVE_RN_TEMPLATE, DVE_RN_TEMPLATE_TO, DVE_RN_TEMPLATE_FROM

Example
decl lyrCond = dve_import_layer ("cond");
decl lyrCond2 = dve_import_layer ("cond2");
decl lyrError101 = dve_export_layer ("error101");
lyrError101 += dve_drc (double_clearance (lyrCond, lyrCond2) < 3.0,
        "Metal layers run parallel and close",
        DVE_RN_POLARITY, DVE_RV_OUTSIDE,
        DVE_RN_TEMPLATE, DVE_RV_OPPOSITE,
        DVE_RN_EDGE_ANGLES, DVE_RV_PARALLEL,
        DVE_RN_ANGLE_TOLERANCE, 1.2);
 

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