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Walt Engle
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 Posted:
Fri Jan 21, 2005 8:32 pm Post subject:
Re: Fun with Defpoints Layer |
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To each his/her own, but I wouldn't put anything on the defpoints layer - I'd put it on a separate layer.
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OLD-CADaver
Guest
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Fri Jan 21, 2005 8:40 pm Post subject:
Re: Fun with Defpoints Layer |
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<<but I wouldn't put anything on the defpoints layer >>
Why not?
<<I'd put it on a separate layer.>>
As we do with most things. But that completely relinquishes control of that layer to the whim of a user downstream. Placing elements on layer defpoints places a tighter restriction on that element's visibility control. If you need to see the xref, you're going to see those elements, but at the same time those elements will not effect the plot. |
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Tom Smith
Guest
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Fri Jan 21, 2005 8:44 pm Post subject:
Re: Fun with Defpoints Layer |
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See my reply to wookie earlier. Until recently, there was no other way in
Acad to make an element visible yet non-plotting. Being able to make other
layers non-plotting was high on the wish list for quite a long time before
Acad finally responded to the need.
Until then, using the special non-plotting property of the defpoints layer
was the only available trick to achieve this, and was widely used for the
purpose. This wasn't a matter of preference, but of necessity, until just a
few releases ago.
It's still a perfectly valid way to treat an isolated element, such as a
sheet border, in order to avoid the overhead of having an entire layer
dedicated to a single entity. It's also a convenient way to to include
temporary non-plotting information, such as a note to yourself. I often put
a defpoints cloud around part of a drawing, to remind myself to come back to
it later. Again, this avoids the overhead and bother of creating a temporary
non-plotting layer that will need cleaning up and purging later. And as OC
noted, it has unique visibility properties which can be advantageous in the
context of xrefs.
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David Kozina
Guest
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| Posted:
Fri Jan 21, 2005 11:56 pm Post subject:
Re: Fun with Defpoints Layer |
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Another advantage with respects to xrefs is that using DEFPOINTS for
non-plot stuff doesn't add yet *another* 'referenced layer' to the morass of
layers you may end up with in the final set. Not a big deal, necessarily,
but every little bit helps.
One thing I use in some of my user-sizable blocks (such as columns and spot
footings) is a POINT placed at the center (Insertion point) of the block on
layer DEFPOINTS. Advantage to this is that when the drawing is referenced
elsewhere, I am still able to snap to NODE. :)
Best regards,
David Kozina
"Tom Smith" <nospam> wrote in message news:41f1235f$1_3@newsprd01...
| Quote: | See my reply to wookie earlier. Until recently, there was no other way in
Acad to make an element visible yet non-plotting. Being able to make other
layers non-plotting was high on the wish list for quite a long time before
Acad finally responded to the need.
Until then, using the special non-plotting property of the defpoints layer
was the only available trick to achieve this, and was widely used for the
purpose. This wasn't a matter of preference, but of necessity, until just
a
few releases ago.
It's still a perfectly valid way to treat an isolated element, such as a
sheet border, in order to avoid the overhead of having an entire layer
dedicated to a single entity. It's also a convenient way to to include
temporary non-plotting information, such as a note to yourself. I often
put
a defpoints cloud around part of a drawing, to remind myself to come back
to
it later. Again, this avoids the overhead and bother of creating a
temporary
non-plotting layer that will need cleaning up and purging later. And as OC
noted, it has unique visibility properties which can be advantageous in
the
context of xrefs.
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W. Kirk Crawford
Guest
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Sun Jan 23, 2005 3:54 am Post subject:
Re: Fun with Defpoints Layer |
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Sorry, OLD-CADaver, but what do you mean when you talk about "bundle pull-zone or drop zone"?
W. Kirk Crawford
Rochester Hills, Michigan |
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OLD-CADaver
Guest
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| Posted:
Mon Jan 24, 2005 4:45 pm Post subject:
Re: Fun with Defpoints Layer |
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Ahh sorry, industry specific terms.
A "bundle pull zone" is the 3-dimensional area in front of heat exchangers that is reserved for pulling or cleaning the exchanger tubes. Nothing can be built in that zone or it would interfere with that activity, but the zone can be used for non-emergency accessways and temporary storage of mobile equipment.
A drop zone is a 3-dimensional envelope, usually next to or inside a structure, that is reserved for raising and lowering equipment from the ground to the different floors in a structure. (An elevator shaft is a "kind" of drop-zone)
Building 3dmodels of these zones on layer defpoints means they are always visible, but do not effect the plot, even when used as an XREF. |
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Tom Smith
Guest
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Mon Jan 24, 2005 6:59 pm Post subject:
Re: Fun with Defpoints Layer |
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That's an interesting defpoints usage. The same principle could apply to the
space in front of electrical panelboards, for example, which can't be
obstructed, or for that matter to minimum widths along egress paths. |
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OLD-CADaver
Guest
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Mon Jan 24, 2005 9:09 pm Post subject:
Re: Fun with Defpoints Layer |
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Yes the concept can be used for any "reserved" space, like access door swings, or hand clearances, or min headroom and the like. However, we avoid using layer defpoints in that manner for any but the most critical of "soft" envelopes or zones. If not used sparingly, it can result in a cluttered, hard to read model.
We have long desired some sort of layer function that will tie two layer together like layer defpoints is tied to layer 0. Some method of joining the display of two layers while one remains noplot. If one is frozen/off both are, and if one is thawed/on both are. |
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Tracy W. Lincoln
Guest
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Tue Jan 25, 2005 10:03 am Post subject:
Re: Fun with Defpoints Layer |
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Layer Grouping with control <drool> and why stop at just a pair... :-)
--
Tracy W. Lincoln - TLConsulting
http://TLConsulting.blogspot.com/
Consulting, Design & Training Specialist
Autodesk Discussion Group Facilitator
"OLD-CADaver" wrote:
| Quote: | We have long desired some sort of layer function that will tie
two layer together like layer defpoints is tied to layer 0.
Some method of joining the display of two layers while one
remains noplot. If one is frozen/off both are, and if one is
thawed/on both are. |
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OLD-CADaver
Guest
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| Posted:
Tue Jan 25, 2005 5:35 pm Post subject:
Re: Fun with Defpoints Layer |
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| Not stopping with a pair, STARTing with a pair ;-) |
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