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Help! Origin point of preset orthographic UCS keeps changing.

Anonymous

Help! Origin point of preset orthographic UCS keeps changing.

Anonymous
No aplicable

I have tried researching this problem to no avail. Let me get a couple of things out of the way:

 

  • When I start a new drawing, everything is set to 0,0,0 correctly and good to go.
  • I do not use the nav cube, I use the views toolbar (preset views i.e. top, front, right, etc.)
  • When changing views / UCS I use a combination of methods which include clicking on the preset views button in the toolbar, as well as typing UCS > Front or UCS > World, etc.
  • I do not use any named UCS, just the preset orthographic UCS.

Here's my problem: A couple of hours into drawing, most of my drawings will have their preset ortho UCS coordinates messed up. If I type UCSMAN and look at the origin points of the preset ortho UCSs, they will be set relative to world, but x, y, and z may be -2', or +1'-3" etc.

 

What is happening and how am I even changing this?

 

Thanks so much if you can help! None of my friends can figure this out. BTW it is fixed by just copying everything into a new drawing, so we have a working solution, but I'd like to be able to identify what is going wrong!

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38 Respuestas
Respuestas (38)

Sahay_R
Mentor
Mentor

Have you tried the BASE command? That may help!


Rina Sahay
Autodesk Expert Elite
Revit Architecture Certified Professional

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If it solves your problem, please click Accept to enhance the Forum.
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beyoungjr
Advisor
Advisor

Hi,

I'd make sure Dynamic UCS is turned off to start.  Also note that clicking positions on the ViewCube will not alter the UCS but only the viewing direction, as opposed to selecting pre-defined orthographic views in the ribbon where the UCS will update when choosing those (but not the ISO's of course).

 

Not sure if I could recreate the issue in a drawing but maybe the Dynamic UCS will reveal something for you?  I've had the current UCS change after several object creations using Dynamic UCS so I just avoid it.

 

Cheers

 


Blaine Young
Senior Engineering Technician, US Army

Anonymous
No aplicable

I always have dynamic UCS turned off. I never use the view cube, I only use the pre-defined ortho views in the toolbar.

 

My problem is that when I use the pre-defined ortho views and as you can see below, the origin point of the pre-set views relative to the WCS is being changed somehow. My problem is that I have no idea how I changed this, or how to change it back!

 

1.JPG

 

This creates an issue when I click through the different views to draw. It means that after selecting "front" my X axis for example is 1'-8-3/4" away from the WCS 0,0,0 point.

 

Best,

Jake

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beyoungjr
Advisor
Advisor

Hi again,

Could you post one of your drawings that this is occurring in?  I know that custom.named UCS's are save in the dwg file but the basic ortho ones's should not have alteration as you show.  I'd like to dig in a little and start with your file so that if I find a solution it will be more familiar to you.

 

Blaine

 


Blaine Young
Senior Engineering Technician, US Army

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john.vellek
Alumni
Alumni

HI @Anonymous,

 

I see that you are visiting as a new member to the AutoCAD forum. Welcome to the Autodesk Community!

 

I have seen posts on this issue in the past. The  cause of this behavior, to the best of my knowledge,  is some corruption in the drawing file. The quick solution is to copy the contents of the file into a new file.

 

If this is an ongoing problem I would check your template files as well as the current drawings for errors with Audit, Purge, and -Purge.

 

 

 

Please select the Accept as Solution button if my post solves your issue or answers your question.


John Vellek


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Anonymous
No aplicable

UPDATE: I know what is causing this.

 

The PRESSPULL command is corrupting the preset ortho UCSs. Copied my geometry into a new file and checked all the UCS settings and all was well. As soon as I used PRESSPULL on something, it corrupted the preset UCS that I was currently using. 

 

Autodesk, please fix this!

 

Best,

Jake

Anonymous
No aplicable

UPDATE: I FOUND THE BUG.

 

I knew this was something weird on AutoCAD's end! The corruption happens when I use the PRESSPULL command. I started fresh with a new file and brought my old geometry in. I checked all the coordinates on the preset orthographic UCS settings in UCSMAN and then started extruding and drawing. As soon as I used the PRESSPULL command, my preset ortho UCS settings got corrupted. That command is what's corrupting the coordinates. I tested this in another file and found I am able to recreate the same problem.

 

 

john.vellek
Alumni
Alumni

HI @Anonymous,

 

Thanks for the post!  Is it possible to attach the file to a post so I can get it to QA? Or, you can share via a cloud location or let me know if I can provide you with an upload location.  Since I use presspull frequently and have not had this happen I would like to see if your file duplicates this behavior on my side.


John Vellek


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SEANT61
Advisor
Advisor

I, too, have seen post regarding this problem.  There does seem to be a potential disconnect related to a bit of drawing functionality the AutoCAD programmers are trying to give us users.


When all runs well, the functionality enhances a users View/UCS coordinating ability - as seen in my little screencast mock-up.

 

When things go awry, though, some of the more fundamental capabilities are at risk - see attached drawing. 

It wouldn't be too surprising that the UCS coordination inherent within the PressPull command can cause the issue (though I can't seem to recreate that problem here).


************************************************************
May your cursor always snap to the location intended.
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beyoungjr
Advisor
Advisor

Woah!

 

Your screen cast shows all going well but I open your file, change to 3D Hidden viewstyle in SE Isometric.  I look for the named views that you showed in the video but they are not there, no big deal I guess.  I used the cube to alter viewpoint with no problems.

 

Now for the problem... SE Iso with WCS, I choose Front UCS on the Coordinates ribbon panel.  The UCS jumps in the X direction to the right end of the house.  What the???  Top UCS jumps to another location and Right UCS as well.

I'm not changing views but only UCS, I try the views and the UCS and View jump to the same strange positions, as if they are follwng custom named UCS's or Views.

 

Gotta be something in the drawing???

So I clipboard copy all objects from 0,0,0 in this drawing, then paste to 0,0,0 in a clean drawing with a plain template (acad.dwt).

Everything works normally!  WCS is correct, Top is same position, Front is same position but rotated around X, Right is same position but rotated around Y.

 

I'll tear into your initial drawing to see what has happened???

Was your posted DWG supposed to have the custom views and UCS's in it?

 


Blaine Young
Senior Engineering Technician, US Army

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beyoungjr
Advisor
Advisor

Okay, I just fixed the Front UCS and it appears stable.  I performed a 3-point UCS and selected the WCS origin as my new origin, then positive X to the right and positive Y upward (just like it should be for Front UCS).  With the new UCS I go to the dialog for Named UCS and rename the new unnamed UCS to Front.  This overwrote the previous Front UCS that you had in your file and the Front is now correct.

 

Based upon the OP I gather that this alteration of the Front UCS is occurring when PressPull-ing or some other basic 3D command/s?

 

Gonna try a few things.

 


Blaine Young
Senior Engineering Technician, US Army

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SEANT61
Advisor
Advisor

Yes.  The screencast shows what happens when everything is going well.  For the uploaded drawing file, I eliminated all the named UCS to show what happens when all is not so well.


************************************************************
May your cursor always snap to the location intended.
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beyoungjr
Advisor
Advisor

After paste of all objects to a clean drawing I have created several new named views, added press-pull regions on various sides of the 3D house and garage, adjusted views and UCS's several times, and deleted some of the named views and UCS's.  I have not been able to get the behavior that occurs in your dwg nor what the OP suggested.

I'd be happy to have worked with a dwg from the OP as well but he has not provided.

Again, I used a completely clean acad.dwt so no history in the new drawing to mess up the testing.

 

If you can do similar by pasting the objects in a clean drawing then let me know where the problem begins it would help.

 

 


Blaine Young
Senior Engineering Technician, US Army

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SEANT61
Advisor
Advisor

To be sure, I've been coy with the responses in this thread.  The errant orthographic views were created on purpose, and did not involve the PressPull command.  Named UCSs were created, set as the base for orthographic views, then subsequently deleted.  That creates the disconnect seen in my attached drawing.


************************************************************
May your cursor always snap to the location intended.
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beyoungjr
Advisor
Advisor

... and I certainly agree that there is a disconnect.  The errant UCS settings are a problem that hsould not exist, unless someone created a UCS and named it Front which would override the normal Front UCS.

 

I'll hold back for now to see what @john.vellek thinks on this one.

 


Blaine Young
Senior Engineering Technician, US Army

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Anonymous
No aplicable

OP Here, I'll post the file once I'm back in the office so you can mess with it. I recommend first opening UCSMAN and looking at the details of the preset ortho UCSs.

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john.vellek
Alumni
Alumni

Hi @beyoungjr,

 

I'm not sure what kind of input I can provide here. I took the sample drawing and copy/pasted into a new file to make sure there was nothing funky with it. I created a new UCS and set the Ortho UCS relative to it. I am able to move between the various views without any problem.

 

I then delete this named UCS and everything still performs as expected. I check and the Ortho UCSs have reverted back to the World UCS.

 

Can you screencast (if you have time) how you are creating your UCS, naming it, and then getting the views to fail?  I would like to see if I am following the same steps and then getting it to fail or if something else is happening.

 

When it fails and you list the details of the UCS does it show a different origin than 0,0,0 for World?

 

 


John Vellek


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beyoungjr
Advisor
Advisor

Hi @john.vellek,

I could only get the behavior in the files posted by @SEANT61.  I cannot get the problem to happen in the acad.dwt clean file I created and pasted the objects to.  I tried creating several named views and custom UCS's, then deleting them.  No problem found yet but I can clearly see the issue in the provided file.

 

The only fix I could recommend so far was to create a custom 3-point ucs and name it the same as a target Ortho UCS.  That appears to overwrite the problem on the drop-down list but in the dialog box under the Ortho tab the messed up ones still remain (even though ignored by the drop-down selection list.

 

 

 


Blaine Young
Senior Engineering Technician, US Army

john.vellek
Alumni
Alumni

Hi @beyoungjr,

 

I like your solution for fixing the Front UCS Ortho. I had not thought of trying that as I figured it wouldn't let me change it.Kudos to you sir!


John Vellek


Join the Autodesk Customer Council - Interact with developers, provide feedback on current and future software releases, and beta test the latest software!

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