| Author |
 Topic  |
|
|
TheBFG
United Kingdom
61 Posts |
 Posted - 11 Oct 2010 : 13:41:06
|
I think it detracts somewhat from the optimum routing of a PCB when pins or pads are shown as needed routing when really they are already connected or to be connected (i.e. through hole pin with power plane underneath, perhaps the plane is defined but not poured). The same goes of surface mount pad, if a plane exists below the part on the right net, I'd rather not see the unrouted net line going to the closest pad with the same net.
Perhaps if pads needing no routing like through hole or fanout only like smt were not included in the ratsnest they should be highlighted in a different color, or something along those lines?
What do people think? |
|
|
Peter Johnson
United Kingdom
499 Posts |
Posted - 12 Oct 2010 : 16:21:22
|
| Have you run optimise nets or a connectivity check? Either of these will strip out unnecessary connections. This is especially obvious with a copper pour area with an assigned net that hasn't yet been poured. |
 |
|
|
TheBFG
United Kingdom
61 Posts |
Posted - 25 Oct 2010 : 13:55:54
|
Not sure you've understood me here.
If a copper plane is defined (even unpoured) for a given net then I think the ratsnest should draw a line from a pin or pad on that net to the plane - that is if the plane happens to be the closest thing on the same net.
Does that make sense? |
|
|
|
remi
United Kingdom
101 Posts |
Posted - 08 Feb 2011 : 11:30:29
|
I think I have a similar request:
When I try to route a track to aground/power plane the track is finished as soon as I reach the via but the net completion only clear after I create a dangling track to the layer
The way it SHOULD work would be to terminate the track after I created the via |
Edited by - remi on 08 Feb 2011 11:31:10 |
|
|
|
Peter Johnson
United Kingdom
499 Posts |
Posted - 22 Feb 2011 : 10:20:30
|
It does draw to the nearest point. The issue here is that for the purpose of connections, it's the boundary of a pour that defines it, not the fill. That's why the fill is apparently being ignored.
Regarding needing a dummy track in the plane, the algorithm which tidies up unwanted nets is fast, but relatively stupid. If you've placed a via into a pour area or power plane, and it's still showing a spurious connection after running a connectivity check, then that would be a bug. Before running a connectivity check - then it's quite possible, but a dummy track should never be necessary. |
|
|
| |
Topic |
|
Feature Request : GND / Power In Ratsnest