Polygon problem/bug.

On 5/10/2016 9:45 p.m., Joop wrote:

Dear Cadsoft team,

 

I created two polygons on the same layer. One covers the whole board and

has rank 1 and has thermals switched off.

The other polygon is smaller and has rank 2 and has thermals switched on.

 

The problem/bug is that the thermals on/off property is not taken into

account when checking the ranking of the two polygons. The thermals are

always switched off.

 

Could you fix this please?

 

Thanks.

 

As I see it there is nothing to fix.

Rank 1 is the highest ranked. Think of it as place getters in a race.

1st is the highest ranked 2nd is a lower performer. 3rd...and so on.

The manual says the following

The thermal flag for a polygon simply indicates the polygon should

honour the thermal setting of the library package. The polygon can never

make a thermal that has not already been set for a pad in the library.

All it can do is deny you a previously set thermal, in the library, when

you set thermals off for the polygon.

So for a board needing pads with thermals and SMD without:

Leave the library thermals on for the PADS and SMD

Create an outer polygon with thermals on and Rank =1

Create the complex inner polygon that covers only the SMD with with

thermals off and Rank = 2

HTH

Warren

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

The manual says the following

 

<quote>... A polygon with rank = 1 has the highest priority in the

Layout Editor, no other polygon drawn in the layout is ever subtracted

 

from it, while one with rank = 6 has the lowest priority. As soon as

there is an overlap with a higher rank, the appropriate area is cut out

 

from the polygon with rank = 6.

 

Polygons with the same rank are compared by the DRC. The rank property

works only for polygons with different signals. For overlapping

polygons

with the same signal name it is without effect. They will be drawn one

 

over the other....<end quote>

Why not honoring the rank with same nets? This is the problem that needs to

be fixed.

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

So for a board needing pads with thermals and SMD without:

Leave the library thermals on for the PADS and SMD

Create an outer polygon with thermals on and Rank =1

Create the complex inner polygon that covers only the SMD with with

thermals off and Rank = 2

I tried that, it doesn't work for the above reason.

Thanks for trying to help anyway.

--

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

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

The manual says the following

 

<quote>... A polygon with rank = 1 has the highest priority in the

Layout Editor, no other polygon drawn in the layout is ever subtracted

 

from it, while one with rank = 6 has the lowest priority. As soon as

there is an overlap with a higher rank, the appropriate area is cut out

 

from the polygon with rank = 6.

 

Polygons with the same rank are compared by the DRC. The rank property

works only for polygons with different signals. For overlapping

polygons

with the same signal name it is without effect. They will be drawn one

 

over the other....<end quote>

Why not honoring the rank with same nets? This is the problem that needs to

be fixed.

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

So for a board needing pads with thermals and SMD without:

Leave the library thermals on for the PADS and SMD

Create an outer polygon with thermals on and Rank =1

Create the complex inner polygon that covers only the SMD with with

thermals off and Rank = 2

I tried that, it doesn't work for the above reason.

Thanks for trying to help anyway.

--

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

On 6/10/2016 10:56 p.m., Joop wrote:

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

The manual says the following

 

<quote>... A polygon with rank = 1 has the highest priority in the

Layout Editor, no other polygon drawn in the layout is ever subtracted

 

from it, while one with rank = 6 has the lowest priority. As soon as

there is an overlap with a higher rank, the appropriate area is cut out

 

from the polygon with rank = 6.

 

Polygons with the same rank are compared by the DRC. The rank property

works only for polygons with different signals. For overlapping

polygons

with the same signal name it is without effect. They will be drawn one

 

over the other....<end quote>

 

Why not honoring the rank with same nets? This is the problem that needs to

be fixed.

 

warrenbrayshaw wrote on Thu, 06 October 2016 11:19

So for a board needing pads with thermals and SMD without:

Leave the library thermals on for the PADS and SMD

Create an outer polygon with thermals on and Rank =1

Create the complex inner polygon that covers only the SMD with with

thermals off and Rank = 2

 

I tried that, it doesn't work for the above reason.

Thanks for trying to help anyway.

 

 

 

Well, working the way it does, gives me exactly what you described you

needed. No thermals on SMD and thermals on pads. At least it works for

me when I tried it using v7.2.2, before I wrote the reply.

How about you make a small board to illustrate your problem and post it

here with an image of what you see.

Warren

warrenbrayshaw wrote on Thu, 06 October 2016 20:07

Well, working the way it does, gives me exactly what you described you

 

needed. No thermals on SMD and thermals on pads. At least it works for

 

me when I tried it using v7.2.2, before I wrote the reply.

 

How about you make a small board to illustrate your problem and post it

 

here with an image of what you see.

 

Warren

Will do that. First I'll try with V7.7.

It could be that this is a bug that has already been solved some time ago.

I still use V6.22. We have the license for V7 but it's unusable slow with

complex boards on our hardware.

Thanks for helping.

--

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

You could tweak your v6.2 to version 6.6 here

ftp://ftp.cadsoft.de/eagle/program/6.6/

The release notes show quite a bit fixed before v6 ended. You may as well

have it.

HTH

Warren

--

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

warrenbrayshaw wrote on Fri, 07 October 2016 03:46

You could tweak your v6.2 to version 6.6 here

ftp://ftp.cadsoft.de/eagle/program/6.6/

 

The release notes show quite a bit fixed before v6 ended. You may as

well have it.

 

HTH

Warren

I was mistaken. I am using V6.6, the last V6 version.

Thanks anyway. I'll let you how it ends with the polygon test & V7.

--

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

Joop wrote:

warrenbrayshaw wrote on Thu, 06 October 2016 20:07

Well, working the way it does, gives me exactly what you described you

needed. No thermals on SMD and thermals on pads. At least it works for

me when I tried it using v7.2.2, before I wrote the reply.

How about you make a small board to illustrate your problem and post it

here with an image of what you see.

 

Will do that. First I'll try with V7.7.

It could be that this is a bug that has already been solved some time ago.

I still use V6.22. We have the license for V7 but it's unusable slow with

complex boards on our hardware.

no need to reinvent the wheel 8-)

just look at the example board file I posted earlier in this thread.

thermals off is not overridden by thermal on, whereas thermal off over

thermal on works as expected.

--

Lorenz

On 7/10/2016 7:32 p.m., Joop wrote:

 

I was mistaken. I am using V6.6, the last V6 version.

Thanks anyway. I'll let you how it ends with the polygon test & V7.

 

I tried it in v6.6 and it works fine there

See attached board.

One SMD and three pads are all connected to the same net as the two

polygons. Turn off "Settings > Misc > Ratsnest processes polygons" to

see the airwires.

The polygons have the same name as the signal connected to those contacts.

The outer Polygon is Rank 1 with thermals on

THe inner is rank 2 with thermals off

HTH

Warren