jaseg/gerbolyze
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

README: Update subtraction script blurb

Browse source
This commit is contained in:
jaseg 2021-02-06 16:01:29 +01:00
parent 40a1c2bceb
commit 685dbb56b2
1 changed files with 7 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

11
README.rst
View file

@ -308,10 +308,13 @@ Subtraction scripts
.. image:: pics/subtract_example.png
Subtraction scripts tell ``gerbolyze paste`` which layers to remove from other layers. When a source layer is given in
the subtraction script, gerbolyze will dilate everything on this source layer and remove it from the target layer. By
default, Gerbolyze subtracts the mask layer from the silk layer to make sure there are no silk primitives that overlap
bare copper.
Subtraction scripts tell ``gerbolyze paste`` to remove an area around certain input layers to from an overlay layer.
When a input layer is given in the subtraction script, gerbolyze will dilate (extend outwards) everything on this input
layer and remove it from the target overlay layer. By default, Gerbolyze subtracts the mask layer from the silk layer to
make sure there are no silk primitives that overlap bare copper, and subtracts each input layer from its corresponding
overlay to make sure the two do not overlap. In the picture above you can see both at work: The overlay contains
halftone primitives all over the place. The subtraction script has cut out an area around all pads (mask layer) and all
existing silkscreen. You can turn off this behavior by passing ``--no-subtract`` or pass your own "script".
The syntax of these scripts is: