Re: gEDA-user: General Layers questions

[Steven Michalske <smichalske@xxxxxxxxx>]

As for mask and paste layers, we may want to have a way for an object
in one layer be a transformed version of another layer.

Example, clearing solder mask for a line, or pad, or whatever would
create a linked object in the adjacent mask layer with a growth in
size of size X.
Where X can be 10% or could be +10mil.  Just a basic transform.


On a side note,  how could we make special track parameters available?
 Meaning differential and single ended impedance.  Like drawing a uber
trace that is really a matched diff pair.
That is a composite trace that is drawn as a virtual trace.

Steve

On Wed, Mar 16, 2011 at 12:51 AM, Martin Kupec <martin.kupec@xxxxxxxxx> wrote:
> On Tue, Mar 15, 2011 at 06:50:01PM -0400, DJ Delorie wrote:
>>
>> Our current way is that copper objects have implied mask openings.  I
>> suppose we could continue that, as well as adding some paste metrics
>> there too.  This is *in addition to* a separate paste layer for
>> user-defined paste, or for footprint-defined custom paste, of course.
>
> Right now (as looking to the core) LineType has only "Clearance"
> attribute. No Mask/Paste. Pads has in addition "Mask" attribute.
>
> And to be clear. There will be "mask layer". So you can draw anything
> there and it will be masked/unmasked. But it will not be "in addition
> to" some implicit mask attributes in some objects.
>
> What I am trying to figure out is how we want to draw some "additional"
> object on that layer according to an object in some copper layer. But
> it seems that we don't have to. Footprints will have its own mask layer
> which will be drawn in our mask layer. And normal lines usualy don't
> have mask/paste so we don't have to worry about.
>
>        Martin Kupec
>
>
>
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