#Unwanted 3D, help !!!
6 messages in this thread
Please help to resolve this problem. After I loaded a file I'm working on,
I found my dwg with its previous X axis oriented at 270d. I tried in many
ways to bring things back with no results. It seems that the dwg, for some
strange reason, is now in 3D space. The only reason I can think about that
may have caused all this is that I tried some lisp files which may have
changed some variables (flatland perhaps ?). I then saved the file with
wblock to save disk space. Now I have this result. I never work with 3D, so
I have real troubles to understand the current orientation of the dwg. I
fiddled with UCS and World views, flatland (normally set to 1), with no
results. I have tried FLATTEN, a file I've found in the Lisp library but it
only flatten part of the entities. Same with CHANGE, I can select some
entities and bring them back to elevation 0 but I can't pick the rest,
Autocad respond with "cannot change elevation of entities with differing Z
coordinates".
Please help, I don't know what to try anymore. I can also upload the file,
if you need so. I'm using v.10.
-=Marco
Marco,
Try this on your original drawing. At the command prompt, type in UCS and
press the Enter key twice. This will align the movable User Coordinate
System (often used with 3D) with the fixed World Coordinate System. Next,
enter the PLAN command. This will align your viewing direction so that
your X-axis will once again point to the right and your Y-axis will point
to the top of your drawing.
If this doesn't work, please let me know and we can try some other things.
Best wishes,
Dieter
Dieter,
thanks *very much* for your response. It's a great relief to see somebody
out there is ready to help in case of need :).
Your suggestion wasn't enough and I had to follow Tony's cure. I forgot to
mention in my previuos msg. that my dwg was badly twisted, so it looked on
the screen with its x-axis oriented at 270d *but* it also had negative
values. Tony suggested to rotate the UCS view of 90d on the z-axis, that
wasn't enough either but it put me on the right way. I had to rotate 90d
more on the z-axis and 90d on x-axis; well, at least I think I did, I just
fiddled more on the axis until I had it straight again. Boy, wasn't it lost
in 3D space :).
I'd really like to learn all this 3D stuff but there isn't much request yet
(I'm a free-lance), and really have to admit that I loose myself in this 3D
space.
Thanks again,
Marco – Milan, Italy
Marco – Several possiblities. First, you could have the view twisted to some
value other than 0.0. If so, then just follow the instructions Dieter gave
you, and that'll fix it.
Second, you could have WBLOCK'd the drawing while the UCS was not set to the
WCS, in which case the current UCS at the time you issued WBLOCK * will have
become the new WCS in the drawing WBLOCK creates.
You could have also arrived at the same result as this using INSERT, or BLOCK
while not in the WCS.
If your view isn't twisted, then you can rectify the problem by setting the
UCS to whatever you want the new WCS to be and then just WBLOCK * the drawing
to a new file.
For example, if the old X-AXIS of your drawing is now 270 degrees, then you
can fix it like so:
Command: UCS WORLD
Command: UCS Z 90
Then, issue WBLOCK *, and the new drawing should be correctly oriented.
-TonyT.
Tony,
thank you *so much*. You can't imagine how grateful I am. It's a great
relief to see somebody out there is ready to help in case of need :).
You put on the right way. I had to rotate more on the axis as the x-axis
had a negative value. At first I was puzzled since moving the crosshairs on
the screen changed only y coords, while x coords always showed as 0.00.
After I fiddled a little more with the x and z axis things were all
straight.
Thanks again for your help,
Ciao, Marco – Milan, Italy
Tony,
I need your help again. My dwg. look alright on the screen but some
entities still have different values on the z axis. Here what LIST says:
LINE from point, X = 56.626 Y = 16.343 Z = 0.000
to point, X = 24.866 Y = 16.343 Z = 0.000 Extrusion direction
relative to UCS:
X = 0.000 Y = 0.018 Z = 1.000 Lenght = 31.760,
Angle in X-Y Plane = 180d 0' 0" Delta X = -31.760, Delta Y = 0.000 Delta
Z = 0.000
Another example:
LINE from point, X = 49.096 Y = 7.493 Z = 0.000 <—-
to point, X = 49.096 Y = 16.143 Z = -0.671 <—- look here
!!! Extrusion direction relative to UCS:
X = 0.000 Y = 0.018 Z = 1.000 In Current UCS,
Lenght = 8.650, Angle in X-Y Plane = 90d0'0"
3D Lenght = 8.676, Angle in X-Y Plane = 355d 33' 44" Delta
X = 0.000, Delta Y = 8.650 Delta Z = -0.671
LIST show some entities with different Z vertices, some with "Extrusion
direction relative to UCS" and the rest with no reference to UCS.
What can I do to bring these entities back to the original state ?
Thanks, Marco