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Polygon bugs in ver 7.7

autodeskguest

There is something messed up with polygons, at least in signal layers of a

board, in version 7.7.

 

I'm placing components on a 4 layer board.  I wanted a ground plane, so I

draw a polygon named "GND" over the whole board in layer 2, like I've done

many times before.  Everything looked OK, but the DRC coughed up a "width"

error at the bottom of the list.  This was shown to be only on the bottom

edge of the polygon, not the other three.  All four edges were draw exactly

on top of the dimension lines.

 

I checked, and polygon had a width of 0.008 inches, which should be fine.

I thought maybe I accidentally got something else in there while trying to

draw the polygon, so I went to delete it.  The polygon deleted as expected,

but the single blue line at the bottom of the board remained.  I displayed

only layer 2 and tried to delete it, but couldn't.  Grouping didn't work

either.  It beeped to indicate there was nothing in the group.  I did

RATSNEST and nothing changed.

 

Getting out of Eagle then back in made this strange remnant go away.  I

then carefully created the polygon again, this time typing coordinates to

make sure I didn't accidentally do something else with the mouse.  Same

thing.  The polygon showed up, but there was this strange remnant only at

the bottom edge that can be seen in layer 2, the DRC complains about

"width", but it otherwise doesn't seem to exist and can't be deleted.

 

I was curious if this had something to do with being coincident with the

dimension line.  I created a small polygon in layer 2 in the middle of the

board, and got the same DRC complaint about the bottom edge only.

 

But, there is now more strangeness.  No matter what I do, I can't get Eagle

to show this polygon filled.  And yes, I checked, "Ratsnest process

polygons" is turned on.

 

I deleted this polygon, got out of Eagle, got back in, and the remnant is

gone as before.

 

I created the layer 2 ground plane polygon again, and the remnant at the

bottom is back.  Getting out of and back into Eagle doesn't make it go

away.

 

Something broke from version 7.6 to 7.7.  Now what?

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

 

Parents

  • On 11/7/2016 1:15 PM, Olin Lathrop wrote:

    Hi Olin,

     

     

    I'm placing components on a 4 layer board.  I wanted a ground plane, so I

    draw a polygon named "GND" over the whole board in layer 2, like I've done

    many times before.  Everything looked OK, but the DRC coughed up a "width"

    error at the bottom of the list.  This was shown to be only on the bottom

    edge of the polygon, not the other three.  All four edges were draw exactly

    on top of the dimension lines.

    DRC errors involving polygons usually only grab one segment to draw the

    error polygon so this so far is OK.

     

    I checked, and polygon had a width of 0.008 inches, which should be fine.

    Did you have netclasses defined for your GND signal? If that's the case

    that might explain why you got the width error.

    I thought maybe I accidentally got something else in there while trying to

    draw the polygon, so I went to delete it.  The polygon deleted as expected,

    but the single blue line at the bottom of the board remained.  I displayed

    only layer 2 and tried to delete it, but couldn't.  Grouping didn't work

    either.  It beeped to indicate there was nothing in the group.  I did

    RATSNEST and nothing changed.

    The only way to get rid of DRC polygons is to either exit EAGLE like you

    did below, or open the errors dialog and click clear all.

     

    Getting out of Eagle then back in made this strange remnant go away.

     

    I was curious if this had something to do with being coincident with the

    dimension line.  I created a small polygon in layer 2 in the middle of the

    board, and got the same DRC complaint about the bottom edge only.

     

    But, there is now more strangeness.  No matter what I do, I can't get Eagle

    to show this polygon filled.  And yes, I checked, "Ratsnest process

    polygons" is turned on.

    Normally, polygons will only fill if there is a member of the net they

    can reach within it's boundaries. Try placing a GND via, does the

    polygon fill in now?

     

    Both you and Chuck are experienced users so I would be surprised if you

    guys didn't already try what I mentioned above. With that said, I tried

    to reproduce the issue here and I can't find anything out of the ordinary.

     

    Best Regards,

    Jorge Garcia

     

Reply

  • On 11/7/2016 1:15 PM, Olin Lathrop wrote:

    Hi Olin,

     

     

    I'm placing components on a 4 layer board.  I wanted a ground plane, so I

    draw a polygon named "GND" over the whole board in layer 2, like I've done

    many times before.  Everything looked OK, but the DRC coughed up a "width"

    error at the bottom of the list.  This was shown to be only on the bottom

    edge of the polygon, not the other three.  All four edges were draw exactly

    on top of the dimension lines.

    DRC errors involving polygons usually only grab one segment to draw the

    error polygon so this so far is OK.

     

    I checked, and polygon had a width of 0.008 inches, which should be fine.

    Did you have netclasses defined for your GND signal? If that's the case

    that might explain why you got the width error.

    I thought maybe I accidentally got something else in there while trying to

    draw the polygon, so I went to delete it.  The polygon deleted as expected,

    but the single blue line at the bottom of the board remained.  I displayed

    only layer 2 and tried to delete it, but couldn't.  Grouping didn't work

    either.  It beeped to indicate there was nothing in the group.  I did

    RATSNEST and nothing changed.

    The only way to get rid of DRC polygons is to either exit EAGLE like you

    did below, or open the errors dialog and click clear all.

     

    Getting out of Eagle then back in made this strange remnant go away.

     

    I was curious if this had something to do with being coincident with the

    dimension line.  I created a small polygon in layer 2 in the middle of the

    board, and got the same DRC complaint about the bottom edge only.

     

    But, there is now more strangeness.  No matter what I do, I can't get Eagle

    to show this polygon filled.  And yes, I checked, "Ratsnest process

    polygons" is turned on.

    Normally, polygons will only fill if there is a member of the net they

    can reach within it's boundaries. Try placing a GND via, does the

    polygon fill in now?

     

    Both you and Chuck are experienced users so I would be surprised if you

    guys didn't already try what I mentioned above. With that said, I tried

    to reproduce the issue here and I can't find anything out of the ordinary.

     

    Best Regards,

    Jorge Garcia

     

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