thanks all for your help... i was just playing about with some tracks and
had them at 8 mil thick on an 8mil grid spaced at 8mil edge to edge and
wanted to change them to 10mil edge to edge - thus, change the grid, 'snap
to grid' and hope!.... more curiosity than a neccessity... im just fumbling
about in my first few months on 99SE... i moved them manually... 

thanks for your concerns & help, Abdul & Ian.

-----Original Message-----
From: Ian Wilson [mailto:[EMAIL PROTECTED]
Sent: Wednesday, 5 May 2004 2:24 PM
To: Protel EDA Forum
Subject: Re: [PEDA] Snap to Grid?

On 01:03 PM 5/05/2004, Abd ul-Rahman Lomax said:

>>i know you can snap components to grid but what about other draw objects?
>I would not rule out that there is a way to do this in DXP, though it 
>could be more trouble than it would be worth, but my question is, really, 
>why do you want this?

You can move rooms to the grid in P2004 - depending on the rules that have 
been set up using the rooms this will probably move everything in the room 
but it won't necessarily move them to grid.

>You have a set of tracks. You want to move them to, perhaps, tighten them 
>up. If you are routing with Place Interactive, and you have Mode/Push 
>Obstacle enabled, banging a track up against your collection of tracks 
>will shove them to design rule clearance. If, for example, you had 8 mil 
>tracks on a 20 mil grid, and your clearance rule is 8 mils for those nets, 
>Shove will compress them to 8/8. And you don't even have to do anything 
>but route your next track.....
>Manual routing in Protel is really gridless. That is, you may use a grid 
>for convenience, but what will ultimately control track spacing is not 
>just the grid, but the clearance rules. Isn't this the way it should be?

Also, don't forget that instead of re-positioning individual tracks it is 
(usually) easier to use the Loop Removal feature, along with the electrical 
snap, and simply replace the section of interest.  This works especially 
well when running around with  bunch of internal corners (the Avoid 
Obstacle mode keeps you at the design rule) but is not quite as good when 
going around an external corner.  I have suggested that there be some sort 
of support added (to P2004) for hugging external corners when manual 
routing and the Avoid Obstacle mode is on.

I agree with Abd ul-Rahman, for the last few years I have been increasingly 
(and now exclusively) routing gridless - I set my clearance rules and then 
use the placement modes to keep everything happy.  Rework with Loop Removal 
means I don't have to worry about tracks being on grid or difficulties in 
maintaining 45 deg angles.

Is this the sort of thing you are worried about.  I assume Menotor would 
have all these same sort of tools and features.  As Abd ul-Rahman asked, 
what and why do you want to move to grid? It may help us answer better.

Ian Wilson

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