If you have worked on large drawings or have had to zoom in and out a lot you may have noticed that curved objects like circles and arcs appear blocky or look more like polygons rather than circles. Don’t worry, you have options to fix this.
1) Set the system variable WHIPARC to a value of <1> This variable determines if curved objects is displayed as a smooth curve or as a series of “vectors” Setting this variable to <o> (zero) turns off the smooth curves.
After setting the WHIPARC Variable, do a REGEN – RE <enter>
2) Change the “View Resolution” in the command line.
VIEWRES <enter> Y <enter> to acccept “fast zooms” then set a value up to 20,000. The lower the value, the more blocky circles and arcs will appear. With newer computers, you should not have any problems settings this to the maximum value of 20,000.
3) Set the “View Resolution” in the Options Dialog box.
Open the “Options Dialog” by either entering OP <enter> or by a right clickin the drawing area and selecting “Options”.
Click on the “Display” tab
In the “Display Resolution” area of this tab, set the value of the “circle and arc smoothness” to a value of up to 20,000 (same as above)
When you are finished, click OK
AutoCAD Tips 
i appreciate it.
thanks a lot for the help and the easy way for explanation.
regards ;)
yes–you helped me! Thanks!
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In that case you need to professional software restores autocad files any version.
I would suggest you the next one http://www.autocad.fixtoolbox.com tool supports fixing autocad 2000-2012 .dwg files
Interesting tool. Thanks for sharing
ok thanks for the tips, I also want to ask for further levels: how the circles and arcs as in extruded (EXT) so as not to look like polygons.
To make rounded 3D objects look smooth try adjusting the system variables:
FACETRES from to The higher the number the more smooth…
ISOLINES from to try to keep this low. The default value is 4, Try changing by increments of 20 and see what works for you.
really helpful! thanks
hello , what about drawing with auto cad architecture walls ?? its doesn’t appear smooth when exporting to pdf please help
thanks
thank you very much
How to change Arc smoothness permanently? Now I need to change it in each drawing separately.
If you have a startup routine in an anad.lsp or acaddoc.lsp you can add the changes there.
The WHIPARC variable is saved in your registry so it should remember that setting regardless of what drawing is opened.
The command VIEWRES however is not a “setvar” (variable) it is a command that may be different in each drawing.
Ex.
(command “WHIPARC” “1”)
(command “VIEWRES” “Y” “20000”)
(princ)
Script form:
WHIPARC
1
VIEWRES
Y
20000
Thank you it worked like a charm!
What does that 20000 indicate ? Is it the resolution or something ? Why is it set as the maximum value ?
The following link describes the VIEWRES variable as a control of the “Zoom percentage” so the higher the number, the faster/smotther it regenerates curved objects.
http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/index.html?url=WS1a9193826455f5ffa23ce210c4a30acaf-5250.htm,topicNumber=d0e331503
Can anybody help for:
I want to set my design in curve like any design go straight and then curve smoothly and continuously same decore. how to do plz
use the fillet command
Thanks for the tip and excellent “step by step” walk through! I’ve been working with AutoCAD for over 10 years and am still learning new little tips and tricks everyday.
cool – I’m happy it helped. I’ll keep ’em coming
~Greg
By the way, I have a question you fellow drafters may be able to help me with. Several years ago I worked with AutoCAD Mechanical and that version had a “Join Entities” command. It was EXTREMELY useful but I haven’t been able to find a lisp routine for it or find anything about it on all these forums. Any help would be appreciated.
I do have to day that this command looks pretty awesome. http://knowledge.autodesk.com/support/autocad-mechanical/downloads/caas/ConnectHelp/autocadmechanical/enu/online-help/AMECH_PP/2012/ENU/pages/WS1a9193826455f5ff84bdde110d5fbbded-7c6b-htm.html
Unfortunately, I can’t find a suitable version (LISP, .NET or.VBA) alternative outside of the AutoCAD Mechanical command.
I also noticed that the above link describes the command differently than the newer (2015) version.
http://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2015/ENU/AutoCAD-Mechanical/files/GUID-36F80B33-E0D5-48C4-97D2-C9E5617E0E41-htm.html
Is the older version’s functionality not available in the newer version?
Perfect fix… It was viewres for me.
Just a note. your webpage is not loading properly you may want to check your code…….
Great content always trumps visuals anyway.
Thanks for your work
Thanks frankie – I am glad it helped.
I am wondering if you are viewing the blog (or internet) through Internet Explorer?
Because this blog is built off of a WYSIWIG basis, so there isn’t any code to check. And Internet Explorer doesn’t display the animations well if at all. Try using Chrome or Firefox
~Greg
when i export a drawing to .KMZ format curves are still not smooth even i have regenerated the drawing. please help
I know that SketchUP is no longer a google company but I do think thatthe why in which google maps (which uses .kmz & .kml files) processes the geometry the same way now – as it did when you export a SketchUP file as a .kmz file.
I am not aware of a way to fix this and make the arcs smooth but that doesn’t mean that there isn’t a way. It has been a while since I have used sketchUP so there might be a way to open the file in sketchUP and smooth the arcs and then export to a new .kmz file
This post explains it better http://forums.sketchup.com/t/circle-not-smooth-because-it-is-aproximated-by-line-segments/787/5
thanks
thank u
Hi
I tried what u said but my circles are not circles with any of my values. :/
I want it to be a complete circle without broken lines in it
The command regen never worked with me.
Thank you
What about trying REGENALL or REA enter
thanks for the commends..
while using spline it is very hard to control it, it goes in a zig-zaggy way, especially in 3d modelling.I donno how to use it,it goes in all 3 axes.How to control it?
are there any settings for it?
Hi
I have this problem with Cylinder in a 3D design. I follow the steps in this tutorial, but it dose not worked.
3D Solids that have curved edges, like Solids (cylinder) are controlled by different variables:
Try adjusting:
ISOLINES
Below is the description of the variable ISOLINES:
“Specifies the number of contour lines displayed on the curved surfaces of 3D solids.
Valid settings range from 0 to 2047.”
Try setting it to 10 and see if that helps. Don’t go overboard with this setting.
~Greg
Default Number = 4″
Thanku :) it was very helpful
I though for sure these tips would help, but no. When I select a polyline, a dashed (smooth with fine arcs shape) is displayed so I can see what the shape should be. But I can not get it to display right when un-selected. Any other ideas? Thanks!
Patrick
Hi!
I have view problems at Shaded or Hidden View Styles
(Conceptual, Realistic, Shaded, Hidden, X-Ray).
I have in the same drawing, is a small drawing, two pipes (3d solids) diameter 400 mm.
1st (small) extruded 1000 mm and at any Shaded View Style look fine…
and 2nd (big) extruded 10000 mm and at any Shaded View Style looks very bad! like be a polygon when plot to PDF and also on Paper Space not good. At model at any Shaded View Style the big looks good. The small looks fine everywhere at any View Style.
At 2D Wire frame View Style both are looks fine.
Thanks!
AutoCAD 2018
VIEWRES= 20000
FACETRES= 10.0
ISOLINES= 16