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Forums >> Revit Building >> Technical Support >> when zooming lines glitching

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Tue, Mar 19, 2019 at 10:12:11 AM | when zooming lines glitching

#1

LOSpistos


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Joined: Wed, Apr 1, 2009
20 Posts
5 Stars: 1 Votes


HELLO

I'm experiencing a really weird glitch in my revit file. Other projects in the revit are ok. When zooming the lines they start to glitch and jump around so they look like they are not aligned. When you zomm even closer sometimes they appear they are aligned but id you go closer they are next to each other. Im talking about zoomin just a tiny bit so its not super close.

Im working in revit 2017.

 

Its really annoying as I'm working on detailing and even I know the lines are aligned they appear they are not.

 

PLEASE can someone help me?

 

MANY THANKSLUBA


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Tue, Mar 19, 2019 at 11:23:28 AM | when zooming lines glitching

#2

WWHub


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Joined: Tue, May 16, 2006
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Are these in a CAD import?

If CAD is not the issue, then it may be your graphics card. If you can dimension perpidicular from one line to the other then the lines are aligned, Revit will not dimension otherwise.


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Tue, Mar 19, 2019 at 11:27:15 AM | when zooming lines glitching

#3

LOSpistos


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Hello, 

 

See the images - its when I;m editing floors and walls alignment. All the other proejcts seem ok. ITs only this particular one that is doing this weird snap&alignemnt.



Attached Images

159163_Capture.JPG159163_Capture2.JPG

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Tue, Mar 19, 2019 at 11:42:26 AM | when zooming lines glitching

#4

WWHub


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Run a true horizontal line and then dimension from that to your other line.  If it will not dimension, then they are NOT aligned.  Question answered, your model is not what you think it is.


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Tue, Mar 19, 2019 at 11:53:55 AM | when zooming lines glitching

#5

LOSpistos


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Revit see the lines as on top of each other - snapped or aligned just name it. Bt when I zoom just a tiny bit the pink line jump on the right or left so it looks like its 1mm from the mster line. 

I cant run a dimension between th epinka nd grey lines because revit thinks they are on top of each other.

 

 



Attached Images

159165_Capture4.JPG

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Tue, Mar 19, 2019 at 12:58:40 PM | when zooming lines glitching

#6

WWHub


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Aw come on!

Draw your line far enough above the model to be able to dimension it!!!!  It can be 1', 10' or 100' away.... what ever.


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Tue, Mar 19, 2019 at 1:26:29 PM | when zooming lines glitching

#7

LOSpistos


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See the image in the attchment. Not sure what you mean. 

I use the alignement too and cant alig the pink line which is an editing line for the floor with the grey line (wall)



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159167_IMG0229.JPG

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Tue, Mar 19, 2019 at 2:15:34 PM | when zooming lines glitching

#8

WWHub


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Put a horizontal dimension from that new line to your grey building line.   IF YOU CAN'T DO THAT THEN YOUR GREY LINE IS NOT PARALLEL!


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Tue, Mar 19, 2019 at 2:29:26 PM | when zooming lines glitching

#9

LOSpistos


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Hi

 

Thanks for your help but i think you are misunderstanding.

its not about whether lines are parallel or not - they are.

 

imagine two lines sitting on top of each other that are parallel and aligned - however when you zoom in, they jump around and appear to be no longer aligned. In reality they are still aligned but they appear not to be. 


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Tue, Mar 19, 2019 at 11:25:04 PM | when zooming lines glitching

#10

WWHub


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That will not happen unless the lines are not parallel and are not CAD import lines.  If you would do what I suggest you could prove that the line is not parallel to your horizontal line.

This problem offten occurs because of CAD imports or sloppy 'drafting' where ortho is turned off.

 


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Thu, Mar 21, 2019 at 1:17:38 PM | when zooming lines glitching

#11

marmiketin1


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I know whats happenning and it is only visual and only happens with sketch lines. See image for clarification. No fix for this as it is likely code related and has to do with where Revit is told to place the visual element and those coordinate numbers being rounded slightly.



Attached Images

159183_Line_Visual_Glitch.png

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Thu, Dec 9, 2021 at 10:21:17 AM | when zooming lines glitching

#12

satvik3107


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i too had the similar kind of issue ... i think its with the origin of the cad file while u import it in revit ... choose the option auto center to center ... i think this should solve the issue 

 



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161910_Screenshot_2021-12-09_155101.png

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Fri, Dec 17, 2021 at 2:32:14 PM | when zooming lines glitching

#13

marmiketin1


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See image showing what the OP is talking about. This also does happen with CAD and that too is a graphical issue which likely has to do with how Revit handles the numbers saying where to visually show items on screen.



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161928_Zoomed_in_line.JPG

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Sun, Dec 19, 2021 at 1:22:55 PM | when zooming lines glitching

#14

WWHub


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If the CAD import is not exploded, then it is a graphical issue.  Unles it is exploded, the CAD is shown graphically like any other image pixel based, not precise CAD data.

A little of my history concerning my knowledge.  Around 1978, I wrote a machine language prgram on an Apple II that moved a "rocket ship" around on the screen.  From that experience, I learned a lot about how graphics are displayed and why.  I was trying to learn how to graphically display information because we architects needed a CAD program.  The only thing available to us was auto-trol developed in 1973 but a 4 station system was $250,000.  Even so, some huge E/A firms were using them. 

Around 1985, I started using AutoCAD ver 2.1 with data entry that was text based.  I was chief architect at an E/A firm that used ArchiCAD.  I soon convinced them that AutoCAD was a better software.  I pushed the limits of that program, writing a lot of Lisp routines so I could do 3D type work using 2D input.  From this experience, I learned a lot about AutoCAD's spatial system.  An image of an early Lisp file is attached.  I even tried to sell a collection of these routines.

All CAD systems are really databases.  In AutoCAD's system the most precise element is a point location in space - X,Y and Z with their accuracy level.  Revit's sytem has a similar level of digital accuracy but the priority is from a precise origin at the exact angle of the line.  The endpoint is then located accordingly with the distance and endpoint being micro adjusted to allow for any discrepancies within Revit's tolerances. 

So in AutoCAD, dimensions between "parallel" lines are done if they are within their angle tolerances.  Revit will only dimension between two lines if their angles are exact. If you overlay an exploded CAD line within Revit, its angle will be the exact CAD angle and not conform to Revit's ortho settengs.



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Wed, Dec 22, 2021 at 7:19:28 PM | when zooming lines glitching

#15

marmiketin1


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I can understand how that can hapen with CAd how lines are not always in plane but in the OPS original post and the first response they are talking about placing a wall in Revit and then trying to model a floor. 

Although they never did explicitly say they did not import cad from the pictures it looks like 2 walls meeting at a corner and using the draw rectangle in setch to draw the floor.

 

In my previous post I drew a detail line then drew a floor and used the pick line on the detail line so those two lines are right on top of each other and then I zoomed way in the get the other images where the grey line (detail line) and the pink line (sketch line wich was drawn using the pick line command) flip positions and appear to not be in the same place.

It seems to be a graphical bug and it has been around for as long as I can remember but it usually happens at such small scales that it is never noticed. 


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