ERF Variables

ERF Variable

Description

v_keep_clr_shape

Yes : The algorithm will (try to) detect the shape of clearances.
6 standard shapes are supported: Round (default), Square, Octagon, Diamond, Standing/Lying Hexagon. All clearances in the copper plane (layer net) are assumed to have the same shape.

No : Round clearance shape is assumed for all clearances.

 

v_clr_shape_tol

Tolerance used for clearances' shape detection.

v_max_net_size

Copper planes (layer nets) consisting of more than this number [ v_max_net_size ] of shapes will be ignored. This improves the performance of the algorithm.

v_allow_joint_clr

Yes : Clearances which are joined after the enlargement will be unified. No : Clearances will be kept separated.

v_subtract_from_surface

Yes : If the copper planes are represented by contourized surfaces where the clearances are represented by holes, optimization will be carried out by reshaping the holes. Otherwise (i.e. the copper planes are drawn), optimization will be carried out by adding negative features to the layer.

No : Optimization will be carried out by adding negative features to the layer [regardless of the plane's structure].

 

v_ignore_npth

Yes : Ignore NPTH drills

No : Optimize clearances around NPTH drills also