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Message 1 of 20
Anonymous
206 Views, 19 Replies

Breaklines

I am creating a surface with 3D polys. I often delete the breakline mdb def
in the TME. When the breaklines get imported I often have two identical
3dpolys over each other. When the TME prompts you that the breakline has a
previous definition I hit the Overwrite All button. Is this correct? I would
hate to explode all of the 3d plines to lines but is there another way to
purge the breakline data from a 3dpline?

John Mayo

LDD R3
19 REPLIES 19
Message 2 of 20
Anonymous
in reply to: Anonymous

John -
"Overwrite" is probably the worst term the developers could have used in
this case.
When you select overwrite, you are actually overwriting the extended data
contained on the entity, not the data contained in the breakline database.

A simple test I have used in the office.
On a junk project with no breaklines in the database. Create a 3dpolyline,
and turn it into a breakline, have LDT erase the original 3d polyline. You
now have 1 breakline in the breakline database (make sure to verify all of
this)

Now turn it into a breakline again (the entity that is already a breakline).
Select modify. Verify that you still only have 1 breakline. You modified
the extended data within the entity. Meaning the breakline number contained
"inside" the entity did not change.
Now do the same thing again, but select overwrite this time. Then check and
see how many breaklines you have.
You should have 2.

You are not overwriting the breakline database, but the data contained
within the line. So it wipes out the breakline number and assigns a new
one. LDT notices that the new breakline number does not exist in the
breakline database and adds it. Now you have a duplicate.

I'm not sure of the exact process - but I believe the entity data gets
updated first and then the breakline database.
I had to have a special training session in the office just for this topic.
HTH
Bruce

"John Mayo" wrote in message
news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> I am creating a surface with 3D polys. I often delete the breakline mdb
def
> in the TME. When the breaklines get imported I often have two identical
> 3dpolys over each other. When the TME prompts you that the breakline has a
> previous definition I hit the Overwrite All button. Is this correct? I
would
> hate to explode all of the 3d plines to lines but is there another way to
> purge the breakline data from a 3dpline?
>
> John Mayo
>
> LDD R3
>
>
Message 3 of 20
Anonymous
in reply to: Anonymous

I did it again! Anne, if you would. Thank you.

John,

The way I go about using breaklines is very tedious but seems to work for
me. When I create a breakline from a 3dpoly or other, I'll have LDD erase
the old entity and place the "breakline" in the drawing. Now, if I have to
modify this breakline, I'll delete it from the database (have it delete it
from the drawing as well to ensure it was deleted), run the add vertices
routine (this will strip the breakline data from the entity) using something
outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
breakline) and then redefine it into LDD. If you simply make a small tweak
to the breakline, you can modify it using any standard editing routine as
long as it doesn't delete the original line and create a new one and then
update the breakline into the database.

I hope this helps,

Brian

"John Mayo" wrote in message
news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> I am creating a surface with 3D polys. I often delete the breakline mdb
def
> in the TME. When the breaklines get imported I often have two identical
> 3dpolys over each other. When the TME prompts you that the breakline has a
> previous definition I hit the Overwrite All button. Is this correct? I
would
> hate to explode all of the 3d plines to lines but is there another way to
> purge the breakline data from a 3dpline?
>
> John Mayo
>
> LDD R3
>
>
Message 4 of 20
Anonymous
in reply to: Anonymous

What about the dialog box that comes up when you add breaklines that have
been used/defined previously. Will the extended data be over-written if I
choose Ignore, Modify or Overnight?

John

"John Mayo" wrote in message
news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> I am creating a surface with 3D polys. I often delete the breakline mdb
def
> in the TME. When the breaklines get imported I often have two identical
> 3dpolys over each other. When the TME prompts you that the breakline has a
> previous definition I hit the Overwrite All button. Is this correct? I
would
> hate to explode all of the 3d plines to lines but is there another way to
> purge the breakline data from a 3dpline?
>
> John Mayo
>
> LDD R3
>
>
Message 5 of 20
Anonymous
in reply to: Anonymous

As far as methods - I have found it easier to keep the originals (don't have
LDT erase) and erase the breaklines that LDT does import. This way I never
have to worry about overwrite/modify/ignore. I have a set of valid
3dpolylines that I can use for breakline data.

Then if I need to make a change, I delete all the breaklines from the
surface I am working on, modify my "master" 3dpolyline, then re-create
breaklines from my "master" 3dpolylines. Again, not erasing my masters, and
erasing the breaklines that are imported -

It's easy enough to delete all, and re-create. With this method I don't
worry about descriptions because I do not need them.

Wishlist item, don't assume we want to import our breaklines.

Bruce

"Brian Hailey" wrote in message
news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> I did it again! Anne, if you would. Thank you.
>
> John,
>
> The way I go about using breaklines is very tedious but seems to work for
> me. When I create a breakline from a 3dpoly or other, I'll have LDD erase
> the old entity and place the "breakline" in the drawing. Now, if I have
to
> modify this breakline, I'll delete it from the database (have it delete it
> from the drawing as well to ensure it was deleted), run the add vertices
> routine (this will strip the breakline data from the entity) using
something
> outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> breakline) and then redefine it into LDD. If you simply make a small
tweak
> to the breakline, you can modify it using any standard editing routine as
> long as it doesn't delete the original line and create a new one and then
> update the breakline into the database.
>
> I hope this helps,
>
> Brian
>
> "John Mayo" wrote in message
> news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > I am creating a surface with 3D polys. I often delete the breakline mdb
> def
> > in the TME. When the breaklines get imported I often have two identical
> > 3dpolys over each other. When the TME prompts you that the breakline has
a
> > previous definition I hit the Overwrite All button. Is this correct? I
> would
> > hate to explode all of the 3d plines to lines but is there another way
to
> > purge the breakline data from a 3dpline?
> >
> > John Mayo
> >
> > LDD R3
> >
> >
>
>
Message 6 of 20
Anonymous
in reply to: Anonymous

My method is
Create layer called srf-lines
Put all 3d lines in it (Breakline Desiger for Survey 3d linework)
Draw extra 3d lines i think are needed (Breakline Designer)
Explode all plines
add breaklines by entity or layer
i'll turn the dwg to sw iso view and drag a window around em.
If i mess up I delete them all from file
draw a few more
add breaklines by entity or layer
till i get what I want.

Robert



"Brian Hailey" wrote in message
news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> I did it again! Anne, if you would. Thank you.
>
> John,
>
> The way I go about using breaklines is very tedious but seems to work for
> me. When I create a breakline from a 3dpoly or other, I'll have LDD erase
> the old entity and place the "breakline" in the drawing. Now, if I have
to
> modify this breakline, I'll delete it from the database (have it delete it
> from the drawing as well to ensure it was deleted), run the add vertices
> routine (this will strip the breakline data from the entity) using
something
> outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> breakline) and then redefine it into LDD. If you simply make a small
tweak
> to the breakline, you can modify it using any standard editing routine as
> long as it doesn't delete the original line and create a new one and then
> update the breakline into the database.
>
> I hope this helps,
>
> Brian
>
> "John Mayo" wrote in message
> news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > I am creating a surface with 3D polys. I often delete the breakline mdb
> def
> > in the TME. When the breaklines get imported I often have two identical
> > 3dpolys over each other. When the TME prompts you that the breakline has
a
> > previous definition I hit the Overwrite All button. Is this correct? I
> would
> > hate to explode all of the 3d plines to lines but is there another way
to
> > purge the breakline data from a 3dpline?
> >
> > John Mayo
> >
> > LDD R3
> >
> >
>
>
Message 7 of 20
Anonymous
in reply to: Anonymous

Hi Robert,

Have you ever checked the speed of adding breakline data to a model ?

You may find that it is faster to add breaklines and their vertices which
are in a polyline rather than by a series of lines.

Certainly from inside VBA the polylines seem to add more quickly for a given
number of vertices.


--


Laurie Comerford
CADApps
www.cadapps.com.au


"Robert Martin" wrote in message
news:17E18B7B216834D13D72867A4B3961EB@in.WebX.maYIadrTaRb...
> My method is
> Create layer called srf-lines
> Put all 3d lines in it (Breakline Desiger for Survey 3d linework)
> Draw extra 3d lines i think are needed (Breakline Designer)
> Explode all plines
> add breaklines by entity or layer
> i'll turn the dwg to sw iso view and drag a window around em.
> If i mess up I delete them all from file
> draw a few more
> add breaklines by entity or layer
> till i get what I want.
>
> Robert
>
>
>
> "Brian Hailey" wrote in message
> news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> > I did it again! Anne, if you would. Thank you.
> >
> > John,
> >
> > The way I go about using breaklines is very tedious but seems to work
for
> > me. When I create a breakline from a 3dpoly or other, I'll have LDD
erase
> > the old entity and place the "breakline" in the drawing. Now, if I have
> to
> > modify this breakline, I'll delete it from the database (have it delete
it
> > from the drawing as well to ensure it was deleted), run the add vertices
> > routine (this will strip the breakline data from the entity) using
> something
> > outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> > breakline) and then redefine it into LDD. If you simply make a small
> tweak
> > to the breakline, you can modify it using any standard editing routine
as
> > long as it doesn't delete the original line and create a new one and
then
> > update the breakline into the database.
> >
> > I hope this helps,
> >
> > Brian
> >
> > "John Mayo" wrote in message
> > news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > > I am creating a surface with 3D polys. I often delete the breakline
mdb
> > def
> > > in the TME. When the breaklines get imported I often have two
identical
> > > 3dpolys over each other. When the TME prompts you that the breakline
has
> a
> > > previous definition I hit the Overwrite All button. Is this correct? I
> > would
> > > hate to explode all of the 3d plines to lines but is there another way
> to
> > > purge the breakline data from a 3dpline?
> > >
> > > John Mayo
> > >
> > > LDD R3
> > >
> > >
> >
> >
>
>
Message 8 of 20
Anonymous
in reply to: Anonymous

When the breaklines from a surface are created or imported, they arrive
on a specific layer (srf-flt) and each one contains extended entity data
that 'connects' them very loosely to the breaklines in the surface, i.e.
they are identified by number. This allows you to pick a breakline to
identify it for listing or editing. If you reimport the breaklines, when
it tries to bring in breakline 1 and it already exists in the drawing,
it asks if you want to ignore the existing one and create a duplicate,
modify the existing one by changing the geometry of the breakline with
the same number, or overwrite by deleting the existing breakline and
replacing it with the one being imported. This is doing nothing to the
breaklines in the surface, only those that are in the drawing.

To avoid the confusion that this scenario creates, I always keep a set
of 'official' breaklines on their own layer that are plain plines
without the extended entity data. I add, modify, or delete as I need to
define the surface I wish to create then, after deleting all breaklines
in the surface, I replace them with my original set. I never rely on the
breaklines on srf-flt layer and routinely delete these as my dataset
changes.


--
Karl Fuls PLS
Autocad AEC Training and Consulting
Assistant Moderator - Autodesk Discussion Groups

John Mayo wrote:
> What about the dialog box that comes up when you add breaklines that have
> been used/defined previously. Will the extended data be over-written if I
> choose Ignore, Modify or Overnight?
>
> John
>
> "John Mayo" wrote in message
> news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
>
>>I am creating a surface with 3D polys. I often delete the breakline mdb
>
> def
>
>>in the TME. When the breaklines get imported I often have two identical
>>3dpolys over each other. When the TME prompts you that the breakline has a
>>previous definition I hit the Overwrite All button. Is this correct? I
>
> would
>
>>hate to explode all of the 3d plines to lines but is there another way to
>>purge the breakline data from a 3dpline?
>>
>>John Mayo
>>
>>LDD R3
>>
>>
>
>
>
Message 9 of 20
Anonymous
in reply to: Anonymous

Thank-you all. I think I will be saving the plines on a separate layer.

John

"John Mayo" wrote in message
news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> I am creating a surface with 3D polys. I often delete the breakline mdb
def
> in the TME. When the breaklines get imported I often have two identical
> 3dpolys over each other. When the TME prompts you that the breakline has a
> previous definition I hit the Overwrite All button. Is this correct? I
would
> hate to explode all of the 3d plines to lines but is there another way to
> purge the breakline data from a 3dpline?
>
> John Mayo
>
> LDD R3
>
>
Message 10 of 20
Anonymous
in reply to: Anonymous

Bruce,

Using this method, you lose the ability to modify a breakline without
deleting all you breaklines and then redefining them all. If this is the
way you do it, perhaps you would be better off defining them as contours
instead of breaklines. The surface will still be built the same but you
wouldn't have to delete the breaklines from the database first (it lets you
overwrite or append) and you can select them by layer.

Brian

"B Jordan" wrote in message
news:0E7CA938EE16E996596016189DA02704@in.WebX.maYIadrTaRb...
> As far as methods - I have found it easier to keep the originals (don't
have
> LDT erase) and erase the breaklines that LDT does import. This way I
never
> have to worry about overwrite/modify/ignore. I have a set of valid
> 3dpolylines that I can use for breakline data.
>
> Then if I need to make a change, I delete all the breaklines from the
> surface I am working on, modify my "master" 3dpolyline, then re-create
> breaklines from my "master" 3dpolylines. Again, not erasing my masters,
and
> erasing the breaklines that are imported -
>
> It's easy enough to delete all, and re-create. With this method I don't
> worry about descriptions because I do not need them.
>
> Wishlist item, don't assume we want to import our breaklines.
>
> Bruce
>
> "Brian Hailey" wrote in message
> news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> > I did it again! Anne, if you would. Thank you.
> >
> > John,
> >
> > The way I go about using breaklines is very tedious but seems to work
for
> > me. When I create a breakline from a 3dpoly or other, I'll have LDD
erase
> > the old entity and place the "breakline" in the drawing. Now, if I have
> to
> > modify this breakline, I'll delete it from the database (have it delete
it
> > from the drawing as well to ensure it was deleted), run the add vertices
> > routine (this will strip the breakline data from the entity) using
> something
> > outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> > breakline) and then redefine it into LDD. If you simply make a small
> tweak
> > to the breakline, you can modify it using any standard editing routine
as
> > long as it doesn't delete the original line and create a new one and
then
> > update the breakline into the database.
> >
> > I hope this helps,
> >
> > Brian
> >
> > "John Mayo" wrote in message
> > news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > > I am creating a surface with 3D polys. I often delete the breakline
mdb
> > def
> > > in the TME. When the breaklines get imported I often have two
identical
> > > 3dpolys over each other. When the TME prompts you that the breakline
has
> a
> > > previous definition I hit the Overwrite All button. Is this correct? I
> > would
> > > hate to explode all of the 3d plines to lines but is there another way
> to
> > > purge the breakline data from a 3dpline?
> > >
> > > John Mayo
> > >
> > > LDD R3
> > >
> > >
> >
> >
>
>
Message 11 of 20
Anonymous
in reply to: Anonymous

> The surface will still be built the same

Actually, as Steve Canon has pointed out before, the algorithm using Contour
data is more rigorous (i.e. eliminating flat faces).

Fred
Message 12 of 20
Anonymous
in reply to: Anonymous

will the program allow 3d polys with differing z elevations to be used as
contours? (i always thought contours had to have a single z elevation
throughout the polyline)


"Brian Hailey" wrote in message
news:69951CB5F0074002F06366FBFC1D513B@in.WebX.maYIadrTaRb...
> Bruce,
>
> Using this method, you lose the ability to modify a breakline without
> deleting all you breaklines and then redefining them all. If this is the
> way you do it, perhaps you would be better off defining them as contours
> instead of breaklines. The surface will still be built the same but you
> wouldn't have to delete the breaklines from the database first (it lets
you
> overwrite or append) and you can select them by layer.
>
> Brian
>
> "B Jordan" wrote in message
> news:0E7CA938EE16E996596016189DA02704@in.WebX.maYIadrTaRb...
> > As far as methods - I have found it easier to keep the originals (don't
> have
> > LDT erase) and erase the breaklines that LDT does import. This way I
> never
> > have to worry about overwrite/modify/ignore. I have a set of valid
> > 3dpolylines that I can use for breakline data.
> >
> > Then if I need to make a change, I delete all the breaklines from the
> > surface I am working on, modify my "master" 3dpolyline, then re-create
> > breaklines from my "master" 3dpolylines. Again, not erasing my masters,
> and
> > erasing the breaklines that are imported -
> >
> > It's easy enough to delete all, and re-create. With this method I don't
> > worry about descriptions because I do not need them.
> >
> > Wishlist item, don't assume we want to import our breaklines.
> >
> > Bruce
> >
> > "Brian Hailey" wrote in message
> > news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> > > I did it again! Anne, if you would. Thank you.
> > >
> > > John,
> > >
> > > The way I go about using breaklines is very tedious but seems to work
> for
> > > me. When I create a breakline from a 3dpoly or other, I'll have LDD
> erase
> > > the old entity and place the "breakline" in the drawing. Now, if I
have
> > to
> > > modify this breakline, I'll delete it from the database (have it
delete
> it
> > > from the drawing as well to ensure it was deleted), run the add
vertices
> > > routine (this will strip the breakline data from the entity) using
> > something
> > > outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> > > breakline) and then redefine it into LDD. If you simply make a small
> > tweak
> > > to the breakline, you can modify it using any standard editing routine
> as
> > > long as it doesn't delete the original line and create a new one and
> then
> > > update the breakline into the database.
> > >
> > > I hope this helps,
> > >
> > > Brian
> > >
> > > "John Mayo" wrote in message
> > > news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > > > I am creating a surface with 3D polys. I often delete the breakline
> mdb
> > > def
> > > > in the TME. When the breaklines get imported I often have two
> identical
> > > > 3dpolys over each other. When the TME prompts you that the breakline
> has
> > a
> > > > previous definition I hit the Overwrite All button. Is this correct?
I
> > > would
> > > > hate to explode all of the 3d plines to lines but is there another
way
> > to
> > > > purge the breakline data from a 3dpline?
> > > >
> > > > John Mayo
> > > >
> > > > LDD R3
> > > >
> > > >
> > >
> > >
> >
> >
>
>
Message 13 of 20
Anonymous
in reply to: Anonymous

Yes, it will.

Fred
Message 14 of 20
Anonymous
in reply to: Anonymous

Fred - you are saying that using them as contour data is better?
I have always had better luck with using them as breaklines.

Bruce
"Fred Ernst" wrote in message
news:87305408F02A234E6EAA2612BD28DB95@in.WebX.maYIadrTaRb...
> > The surface will still be built the same
>
> Actually, as Steve Canon has pointed out before, the algorithm using
Contour
> data is more rigorous (i.e. eliminating flat faces).
>
> Fred
>
>
>
Message 15 of 20
Anonymous
in reply to: Anonymous

I haven't compared enough data sets to take that position. Although, it
seems to work well on the few I've tried. What problems have you
encountered?

Fred
Message 16 of 20
Anonymous
in reply to: Anonymous

No production problems, just better representation.
I use to use 3dpolys as contour data, but the end result just seemed better
using them as breaklines.
Maybe it's my imagination.

Bruce
"Fred Ernst" wrote in message
news:48FEE960270744EFCA0590454D6DBE16@in.WebX.maYIadrTaRb...
> I haven't compared enough data sets to take that position. Although, it
> seems to work well on the few I've tried. What problems have you
> encountered?
>
> Fred
>
>
Message 17 of 20
Anonymous
in reply to: Anonymous

Never really tested it. I don't do many big jobs.
My biggest yet has been 400 acres.
I'll test it next time I get a big one.

Robert


"Laurie Comerford" wrote in message
news:ACD12ABF74DFE2E28E83B93A4785CCD1@in.WebX.maYIadrTaRb...
> Hi Robert,
>
> Have you ever checked the speed of adding breakline data to a model ?
>
> You may find that it is faster to add breaklines and their vertices which
> are in a polyline rather than by a series of lines.
>
> Certainly from inside VBA the polylines seem to add more quickly for a
given
> number of vertices.
>
>
> --
>
>
> Laurie Comerford
> CADApps
> www.cadapps.com.au
>
>
> "Robert Martin" wrote in message
> news:17E18B7B216834D13D72867A4B3961EB@in.WebX.maYIadrTaRb...
> > My method is
> > Create layer called srf-lines
> > Put all 3d lines in it (Breakline Desiger for Survey 3d linework)
> > Draw extra 3d lines i think are needed (Breakline Designer)
> > Explode all plines
> > add breaklines by entity or layer
> > i'll turn the dwg to sw iso view and drag a window around em.
> > If i mess up I delete them all from file
> > draw a few more
> > add breaklines by entity or layer
> > till i get what I want.
> >
> > Robert
> >
> >
> >
> > "Brian Hailey" wrote in message
> > news:5D7D8A5FBA858BAF7D321F80CD59F3B1@in.WebX.maYIadrTaRb...
> > > I did it again! Anne, if you would. Thank you.
> > >
> > > John,
> > >
> > > The way I go about using breaklines is very tedious but seems to work
> for
> > > me. When I create a breakline from a 3dpoly or other, I'll have LDD
> erase
> > > the old entity and place the "breakline" in the drawing. Now, if I
have
> > to
> > > modify this breakline, I'll delete it from the database (have it
delete
> it
> > > from the drawing as well to ensure it was deleted), run the add
vertices
> > > routine (this will strip the breakline data from the entity) using
> > something
> > > outrageous like 50,000 drawing units, modify the 3dpoly (formerly a
> > > breakline) and then redefine it into LDD. If you simply make a small
> > tweak
> > > to the breakline, you can modify it using any standard editing routine
> as
> > > long as it doesn't delete the original line and create a new one and
> then
> > > update the breakline into the database.
> > >
> > > I hope this helps,
> > >
> > > Brian
> > >
> > > "John Mayo" wrote in message
> > > news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> > > > I am creating a surface with 3D polys. I often delete the breakline
> mdb
> > > def
> > > > in the TME. When the breaklines get imported I often have two
> identical
> > > > 3dpolys over each other. When the TME prompts you that the breakline
> has
> > a
> > > > previous definition I hit the Overwrite All button. Is this correct?
I
> > > would
> > > > hate to explode all of the 3d plines to lines but is there another
way
> > to
> > > > purge the breakline data from a 3dpline?
> > > >
> > > > John Mayo
> > > >
> > > > LDD R3
> > > >
> > > >
> > >
> > >
> >
> >
>
>
Message 18 of 20
Anonymous
in reply to: Anonymous

Hi Karl,

In the case you are describing I expect you are talking about "Design
Breaklines".

From the viewpoint of EG breaklines I would not want them in the drawing as
such. The source lines from the survey would obviously be useful for
location delineation and I'm not referring to them.


--


Laurie Comerford
CADApps
www.cadapps.com.au


"Karl Fuls" wrote in message
news:69A4F31ECA6CAC553DBA66AE04B62D88@in.WebX.maYIadrTaRb...
> When the breaklines from a surface are created or imported, they arrive
> on a specific layer (srf-flt) and each one contains extended entity data
> that 'connects' them very loosely to the breaklines in the surface, i.e.
> they are identified by number. This allows you to pick a breakline to
> identify it for listing or editing. If you reimport the breaklines, when
> it tries to bring in breakline 1 and it already exists in the drawing,
> it asks if you want to ignore the existing one and create a duplicate,
> modify the existing one by changing the geometry of the breakline with
> the same number, or overwrite by deleting the existing breakline and
> replacing it with the one being imported. This is doing nothing to the
> breaklines in the surface, only those that are in the drawing.
>
> To avoid the confusion that this scenario creates, I always keep a set
> of 'official' breaklines on their own layer that are plain plines
> without the extended entity data. I add, modify, or delete as I need to
> define the surface I wish to create then, after deleting all breaklines
> in the surface, I replace them with my original set. I never rely on the
> breaklines on srf-flt layer and routinely delete these as my dataset
> changes.
>
>
> --
> Karl Fuls PLS
> Autocad AEC Training and Consulting
> Assistant Moderator - Autodesk Discussion Groups
>
> John Mayo wrote:
> > What about the dialog box that comes up when you add breaklines that
have
> > been used/defined previously. Will the extended data be over-written if
I
> > choose Ignore, Modify or Overnight?
> >
> > John
> >
> > "John Mayo" wrote in message
> > news:7067A9DA311B3E685D800116C2E083E0@in.WebX.maYIadrTaRb...
> >
> >>I am creating a surface with 3D polys. I often delete the breakline mdb
> >
> > def
> >
> >>in the TME. When the breaklines get imported I often have two identical
> >>3dpolys over each other. When the TME prompts you that the breakline has
a
> >>previous definition I hit the Overwrite All button. Is this correct? I
> >
> > would
> >
> >>hate to explode all of the 3d plines to lines but is there another way
to
> >>purge the breakline data from a 3dpline?
> >>
> >>John Mayo
> >>
> >>LDD R3
> >>
> >>
> >
> >
> >
>
Message 19 of 20
Anonymous
in reply to: Anonymous

Exactly....

However, I also archive the EG faultlines as entities when I am
satisfied with them. I usually wblock them out for safekeeping as well
as making a zip file of the eg surface folder in case I do something
really stupid and mess up the original

--
Karl Fuls PLS
Autocad AEC Training and Consulting
Assistant Moderator - Autodesk Discussion Groups

Laurie Comerford wrote:
> Hi Karl,
>
> In the case you are describing I expect you are talking about "Design
> Breaklines".
>
> From the viewpoint of EG breaklines I would not want them in the drawing as
> such. The source lines from the survey would obviously be useful for
> location delineation and I'm not referring to them.
>
>
Message 20 of 20
Anonymous
in reply to: Anonymous

Now that is a good idea. Looks like we have a new standard here.

John Mayo

"Karl Fuls" wrote in message
news:B0708D10F417F235819FBCDF13C95B2A@in.WebX.maYIadrTaRb...
> Exactly....
>
> However, I also archive the EG faultlines as entities when I am
> satisfied with them. I usually wblock them out for safekeeping as well
> as making a zip file of the eg surface folder in case I do something
> really stupid and mess up the original
>
> --
> Karl Fuls PLS
> Autocad AEC Training and Consulting
> Assistant Moderator - Autodesk Discussion Groups
>
> Laurie Comerford wrote:
> > Hi Karl,
> >
> > In the case you are describing I expect you are talking about "Design
> > Breaklines".
> >
> > From the viewpoint of EG breaklines I would not want them in the drawing
as
> > such. The source lines from the survey would obviously be useful for
> > location delineation and I'm not referring to them.
> >
> >
>

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