Use of zero length entities
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Use of zero length entities

 
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Jason Piercey
Guest





Posted: Thu Dec 30, 2004 3:07 am    Post subject: Use of zero length entities Reply with quote

We just had a situation here where a heavy polyline
wouldn't extend due to a zero length segment found
at the end. Seems to me that zero length segments
are useless.

Anyone actually use a zero length entity for anything?

Speaking with a co-worker, he thought one could
use something like this to attach xdata (as an example)
but basically obscure it from the users view.

Just curious what others thought about it.


--
Autodesk Discussion Group Facilitator

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R. Robert Bell
Guest





Posted: Thu Dec 30, 2004 3:22 am    Post subject: Re: Use of zero length entities Reply with quote

I use zero length segments in some plines to get the type of fit curve I
need. If you ask me to reproduce, I'll just deny this posting. <vbg>

--
R. Robert Bell


"Jason Piercey" <Jason AT atreng DOT com> wrote in message
news:41d32aa4$1_1@newsprd01...
We just had a situation here where a heavy polyline
wouldn't extend due to a zero length segment found
at the end. Seems to me that zero length segments
are useless.

Anyone actually use a zero length entity for anything?

Speaking with a co-worker, he thought one could
use something like this to attach xdata (as an example)
but basically obscure it from the users view.

Just curious what others thought about it.


--
Autodesk Discussion Group Facilitator
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Jason Piercey
Guest





Posted: Thu Dec 30, 2004 3:48 am    Post subject: Re: Use of zero length entities Reply with quote

:)

--
Autodesk Discussion Group Facilitator



"R. Robert Bell" <NOT.RobertB@MWEngineers.com> wrote in message
news:41d32e0c$1_3@newsprd01...
> If you ask me to reproduce, I'll just deny this posting. <vbg>

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Josh
Guest





Posted: Thu Dec 30, 2004 4:51 am    Post subject: Re: Use of zero length entities Reply with quote

That's exactly what I <used> to use zero-length segments for...controling
fit curves in plines. However, as per my plea agreement and witness
relocation program, I can't discuss the matter any further. ~:-)

"R. Robert Bell" <NOT.RobertB@MWEngineers.com> wrote in message
news:41d32e0c$1_3@newsprd01...
Quote:
I use zero length segments in some plines to get the type of fit curve I
need. If you ask me to reproduce, I'll just deny this posting. <vbg

--
R. Robert Bell


"Jason Piercey" <Jason AT atreng DOT com> wrote in message
news:41d32aa4$1_1@newsprd01...
We just had a situation here where a heavy polyline
wouldn't extend due to a zero length segment found
at the end. Seems to me that zero length segments
are useless.

Anyone actually use a zero length entity for anything?

Speaking with a co-worker, he thought one could
use something like this to attach xdata (as an example)
but basically obscure it from the users view.

Just curious what others thought about it.


--
Autodesk Discussion Group Facilitator




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wkiernan
Guest





Posted: Fri Dec 31, 2004 12:27 am    Post subject: Re: Use of zero length entities Reply with quote

I once used a zero-length line in a title block as something you could snap to the ENDPOINT of. You could use a POINT entity and snap to NODE, but if PDMODE is set to zero the POINT will not appear, or alternatively it could appear as a plus sign or an "x" when all you want to see is a little dot.

I did want the little dot to appear in the drawing, because we had our HP plotter set to conserve paper; even if you told it to plot, say, a 24" x 36" sheet, it would eliminate all the white space on the top, bottom, left and right of the plotted image. By putting a zero-length line at the corners of the page, it would force the plotter to print the page with the white space. (Well, the white space wasn't perfectly white, it had a one-pixel ink dot at the corners.)
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Tom Smith
Guest





Posted: Fri Dec 31, 2004 1:24 am    Post subject: Re: Use of zero length entities Reply with quote

Ancient history -- I did a similar thing, but without the zero-length line.
I used a defpoints-layer pline representing the sheet edges. This forced the
extents to be where I wanted them, but didn't plot.
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Jeff Mishler
Guest





Posted: Fri Dec 31, 2004 2:01 am    Post subject: Re: Use of zero length entities Reply with quote

Let's try to keep any reproducing off of this group..... ;-)

--
Jeff
check out www.cadvault.com
"R. Robert Bell" <NOT.RobertB@MWEngineers.com> wrote in message
news:41d32e0c$1_3@newsprd01...
Quote:
I use zero length segments in some plines to get the type of fit curve I
need. If you ask me to reproduce, I'll just deny this posting. <vbg

--
R. Robert Bell


"Jason Piercey" <Jason AT atreng DOT com> wrote in message
news:41d32aa4$1_1@newsprd01...
We just had a situation here where a heavy polyline
wouldn't extend due to a zero length segment found
at the end. Seems to me that zero length segments
are useless.

Anyone actually use a zero length entity for anything?

Speaking with a co-worker, he thought one could
use something like this to attach xdata (as an example)
but basically obscure it from the users view.

Just curious what others thought about it.


--
Autodesk Discussion Group Facilitator




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R. Robert Bell
Guest





Posted: Fri Dec 31, 2004 2:12 am    Post subject: Re: Use of zero length entities Reply with quote

I wondered if anyone would pickup on that pun. <esg>

--
R. Robert Bell


"Jeff Mishler" <jeff_m@cadvault.com> wrote in message
news:41d46cc2_1@newsprd01...
Let's try to keep any reproducing off of this group..... ;-)

--
Jeff
check out www.cadvault.com
"R. Robert Bell" <NOT.RobertB@MWEngineers.com> wrote in message
news:41d32e0c$1_3@newsprd01...
Quote:
I use zero length segments in some plines to get the type of fit curve I
need. If you ask me to reproduce, I'll just deny this posting. <vbg
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Matt Stachoni
Guest





Posted: Fri Dec 31, 2004 9:14 pm    Post subject: Re: Use of zero length entities Reply with quote

On Thu, 30 Dec 2004 15:24:18 -0500, "Tom Smith" <nospam> wrote:

Quote:
Ancient history -- I did a similar thing, but without the zero-length line.
I used a defpoints-layer pline representing the sheet edges. This forced the
extents to be where I wanted them, but didn't plot.

Alternatively, you could use a POINT object on the Defpoints layer, which
doesn't respect the PDMODE system variable. It always displays as a little dot,
and gives you the proper extents.

Matt
mstachoni@comcast.net
mstachoni@bhhtait.com
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wkiernan
Guest





Posted: Fri Dec 31, 2004 9:56 pm    Post subject: Re: Use of zero length entities Reply with quote

yeah, entities on the defpoints layer move the extents of the drawing over, but that's not what I was trying to achieve, the idea was I _did_ want the plotter to print that one-pixel dot. In "paper-saving" mode the plotter shifted the inked area to the corner of the paper if there wasn't that one-pixel _printed_ dot to anchor the plotted image.
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Daniel J. Altamura, R.A.
Guest





Posted: Fri Dec 31, 2004 10:36 pm    Post subject: Re: Use of zero length entities Reply with quote

Yes, exactly what I have done for years. Recently I discovered that I could
simply screen the dots. This way, they are hardly visible on the plot, but
the plotter "sees" them.

--
Daniel J. Altamura, R.A.
Altamura Architectural Consulting
and SoftWorx, Autodesk Authorized Developer
--------------------------------------------------------------------


"wkiernan" <nospam@address.withheld> wrote in message
news:11461018.1104512209868.JavaMail.jive@jiveforum2.autodesk.com...
Quote:
yeah, entities on the defpoints layer move the extents of the drawing
over, but that's not what I was trying to achieve, the idea was I _did_
want the plotter to print that one-pixel dot. In "paper-saving" mode the
plotter shifted the inked area to the corner of the paper if there wasn't
that one-pixel _printed_ dot to anchor the plotted image.
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Don Reichle
Guest





Posted: Sat Jan 01, 2005 12:43 am    Post subject: Re: Use of zero length entities Reply with quote

And a "screen" of 1 would make them extremely hard to notice. :-)

--
Don Reichle
"King Of Work-Arounds"
Barghausen Consulting Engineers
Kent, WA USA
LDT3 - SP1/CD3 - SP1
On WIN2K SP4
Dell 1.6 Ghz P4
512MB RAM
NVIDIA 32MB AGP


"Daniel J. Altamura, R.A." <Altamura@frontiernet.net> wrote in message
news:41d58e08$1_3@newsprd01...
Quote:
Yes, exactly what I have done for years. Recently I discovered that I
could
simply screen the dots. This way, they are hardly visible on the plot,
but
the plotter "sees" them.

--
Daniel J. Altamura, R.A.
Altamura Architectural Consulting
and SoftWorx, Autodesk Authorized Developer
--------------------------------------------------------------------


"wkiernan" <nospam@address.withheld> wrote in message
news:11461018.1104512209868.JavaMail.jive@jiveforum2.autodesk.com...
yeah, entities on the defpoints layer move the extents of the drawing
over, but that's not what I was trying to achieve, the idea was I _did_
want the plotter to print that one-pixel dot. In "paper-saving" mode
the
plotter shifted the inked area to the corner of the paper if there
wasn't
that one-pixel _printed_ dot to anchor the plotted image.

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