Re: hpgl code and plotters

Chris,

Here again, the early tools did this, and their "grandchildren" still
do. Camtech routers work in "closed paths"; they always cut the
inside path one direction (and first), before cutting the outside
paths.

Their software was written by AXYZ (one of those collaboprations my
last msg spoke of). Axyz (pronounced Ack-seez) has gone on to make
their own routers and they still do line "ordering" within the system.
As does Lcam. And others, but my brain is tired.

Hope this helps.

Ballendo

--- In CAD_CAM_EDM_DRO@y..., Chris L <datac@l...> wrote:
>
>
> Raymond Heckert wrote:
>
> > and it had a feature to allow
> > "re-ordering" the line-work to allow for faster execution.
>
> Oh, I was familiar with that, but, the Concern there ( "faster
execution") is
> that "Faster execution" is not the same as "ordering" a file for
*needs*. So I
> don't think any Controller would ever get that issue right.
>
> Even for vinyl cutting, Your best off having the drag knife
starting and ending
> on a corner node, not in the middle of a curve. Seldom does it
matter The order
> of which line to cut first with Vinyl, because there is nothing to
fall loose
> or out of place. I have the option to select the hpgl output
as "drawn" (which
> includes editing any and all vectors for direction, start point and
even
> depth), From left to right, right to left, top down or bottom up.
But, that's
> at the design software.
>
> Obviously, when CNC Routing or machining, The "faster execution"
can be a
> hazard ! Its a good Idea to cut "holes" before the "profiles"...
>
> Chris L