How to find traces that are not a 45 degree in layout?

u can find traces that r not a 45 degree angle.

first, u select "cline segs" in the find filter.

then u select clines and run the "show element" command.

u will see the element of each cline and the angle of each cline. 

an example is shown below.

the middle cline has a 20.905 degree angle but others have a 45 degree angle.

u can place them in the excel sheet and sort them out to find angles that are not a 45 degree.

u can also set up the design level drc by using the analysis mode on setup --> constraints --> modes

u can find traces that r not a 45 degree angle.

first, u select "cline segs" in the find filter.

then u select clines and run the "show element" command.

u will see the element of each cline and the angle of each cline. 

an example is shown below.

the middle cline has a 20.905 degree angle but others have a 45 degree angle.

u can place them in the excel sheet and sort them out to find angles that are not a 45 degree.

u can also set up the design level drc by using the analysis mode on setup --> constraints --> modes

Thank you masamsa for your reply.

Your 1st proposal is an interesting one and it should work. The big disadvantage of that - it is manual...

The 2nd unfortunately does not work in my case because I need to find traces that are connected to BGA circular pads. So I don't get DRC. 

And it's interesting that there is no 2nd DRC near BGA pad 

if u do not like manual operations, u would need to create a skill code like rfinley mentioned above.

people in the pcb skill forum may help u.

A text search through "Allegro SKILL reference 17.4-2019" is not showing how to access the angle of a CLINE Segment.   I had similar problems trying to read the nets of a pin to pin DRC violation instance.  Tech support bailed me out.

Chapter 2 details the database structure inside Allegro.  CLINESEGS are a Figure database type that you would select in axlSetFindFilter.

It looks like the two endpoint x,y's are easy to access.   If both X or both Y match, you can skip the trig... It's orthogonal.

I would start with the excellent Find_DRC.il example as a framework.  

Okaay, interesting .... need to investigate. 

Thank you.