Draw path

Thanks Lawrence - I was going to say the same thing about the old thread.

Rather irritatingly, JH Shih emailed me directly with more information than was posted here. Given that I've never had any interactions with the company (he?) is from, and I can't really respond to direct questions from users the world over when I am only doing this in my spare time (which is rather limited currently), please don't think you'll get quicker responses by contacting me directly. You won't.

Here was the detail:

It really takes time when I want to create it. I am surprised that the problem have not yet been solved for so many years (it shows the question has been post last century) .
I think maybe there is a easier way to solve it.
Since everyone is not so care about the width on 45 degree, and you can separate the path created by "wire", just make the part on 45 degree bigger and fix grid.
For example, I create a 2 width wire like Z shape, and the part of / will be off grid. If we(actually U Cadence) can make it a bit bigger to width 2.12132. Then, magic, the part of / will on grid and makes everyone happy.
The part of / don't have to really fix width with orthogonal one. We still have to fix it on grid most of time.
I think it's just a scrip problem. Get width W, get snap spacing X, do math ((W^2)/2)^0.5 = S , (rounds up Sx with X) = Sx . Use Sx to build new path.
Can it be useful?

Well, wires already do widen the width on the 45 degree segments. That's how the edge vertices end up on the manufacturing grid. If it didn't widen the track then, it would be impossible to meet the grid requirements (because the square root of 2 is an irrational number).

The problem is that you seem to be expecting the edge vertices to be on the snap grid, which is not what happens. The snap grid is used for the points you digitise - i.e. the centre line. That's for your convenience when  you are drawing a set of shapes, wires, lines etc to ensure everything lines up OK. However, what is important for manufacturing is that the outer vertices (on the edges of the wire) are on the manufacturing grid (which is defined in the tech file). That's what matters - and so that's what create wire does. There's no manufacturing reason why the outer vertices need to be on the snap grid.

Regards,

Andrew

Thanks Lawrence - I was going to say the same thing about the old thread.

Rather irritatingly, JH Shih emailed me directly with more information than was posted here. Given that I've never had any interactions with the company (he?) is from, and I can't really respond to direct questions from users the world over when I am only doing this in my spare time (which is rather limited currently), please don't think you'll get quicker responses by contacting me directly. You won't.

Here was the detail:

It really takes time when I want to create it. I am surprised that the problem have not yet been solved for so many years (it shows the question has been post last century) .
I think maybe there is a easier way to solve it.
Since everyone is not so care about the width on 45 degree, and you can separate the path created by "wire", just make the part on 45 degree bigger and fix grid.
For example, I create a 2 width wire like Z shape, and the part of / will be off grid. If we(actually U Cadence) can make it a bit bigger to width 2.12132. Then, magic, the part of / will on grid and makes everyone happy.
The part of / don't have to really fix width with orthogonal one. We still have to fix it on grid most of time.
I think it's just a scrip problem. Get width W, get snap spacing X, do math ((W^2)/2)^0.5 = S , (rounds up Sx with X) = Sx . Use Sx to build new path.
Can it be useful?

Well, wires already do widen the width on the 45 degree segments. That's how the edge vertices end up on the manufacturing grid. If it didn't widen the track then, it would be impossible to meet the grid requirements (because the square root of 2 is an irrational number).

The problem is that you seem to be expecting the edge vertices to be on the snap grid, which is not what happens. The snap grid is used for the points you digitise - i.e. the centre line. That's for your convenience when  you are drawing a set of shapes, wires, lines etc to ensure everything lines up OK. However, what is important for manufacturing is that the outer vertices (on the edges of the wire) are on the manufacturing grid (which is defined in the tech file). That's what matters - and so that's what create wire does. There's no manufacturing reason why the outer vertices need to be on the snap grid.

Regards,

Andrew