Revcloud - Change system variable in registry for Autocad 2021

[acbsdesign]

Hi,

Rev clouds after AS2021 installation do not keep constant arc length when dwgs produced with AS2020 are opened and rev clouds created.

Read a post about modifying the registry, but it is for an older version.

tried with this path:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\AutoCAD\R24.0\ACAD-4101\Variables\*REVCLOUDMAXARCLENGTH

but couldn't figure out how to change the default arc length.

Any help would be much appreciated.

Thank you.

[pendean · Accepted solution]

These are all new object types in 2021 (called REVCLOUD): in 2020 and older, these are just polylines with arcs, nothing more. You will need a LISP or three for fixing the older pline-based cloud, if recreating them is not an option.

[acbsdesign]

Thank you for the input,

Is there a new variable / setting to control the arc of newly created revclouds?

If not, we have to go back and create a revcloud in each prototype for each company and set arc length with a certain value.

[pendean]

HELP in 2021 says these are all new

Commands
REVCLOUDPROPERTIES (Command)

System Variables
DELOBJ (System Variable)
REVCLOUDARCVARIANCE (System Variable)
REVCLOUDCREATEMODE (System Variable)
REVCLOUDGRIPS (System Variable)

[acbsdesign]

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@pendean wrote:
HELP in 2021 says these are all new

Commands
REVCLOUDPROPERTIES (Command)

System Variables
DELOBJ (System Variable)
REVCLOUDARCVARIANCE (System Variable)
REVCLOUDCREATEMODE (System Variable)
REVCLOUDGRIPS (System Variable)

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Thank you, 

Tried these already, AD did not give us an option to pre-set the arc length globally.

Are you in a position to ask devs to add something like REVCLOUDARCLENGTHDEFAULT?

Maybe a call or two would work. Looks like this is in your range. 🙂

Have a great day.

[calcala]

Use system variable REVCLOUDARCVARIANCE.

(setvar 'REVCLOUDARCVARIANCE 0)

Also, see REVCLOUDAPPROXARCLEN.

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/AutoC...

[acbsdesign]

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@calcala wrote:

Use system variable REVCLOUDARCVARIANCE.

(setvar 'REVCLOUDARCVARIANCE 0)

Also, see REVCLOUDAPPROXARCLEN.

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/AutoC...

---

Hi,

Thank you for chiming in, 

REVCLOUDAPPROXARCLEN does not overwrite global settings, just tested with dwgs created with AS2020, modified cloud settings for one dwg, rest of the dwgs created for same project do not have the modified settings.

This should be addressed to AD.

It is not done right.

Have a great day.

[calcala]

The REVCLOUDARCVARIANCE variable is new for 2021.

For 2020 and older you need to use the REVCLOUDMINARCLENGTH and REVCLOUDMAXARCLENGTH. 

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/AutoC...

You'll need code to distinguish between Autocad versions.

See variable ACADVER.

AutoCAD 2020 Obsolete Commands and System Variables

System variables	Description	Additional Information	AutoCAD	AutoCAD LT
REVCLOUDMAXARCLENGTH	Stores the maximum arc length for revision clouds.	No longer needed. Replaced by the REVCLOUDAPPROXARCLEN system variable.	X	X
REVCLOUDMINARCLENGTH	Stores the minimum arc length for revision clouds.	No longer needed. Replaced by the REVCLOUDAPPROXARCLEN system variable.	X	X

Hope this helps.

[acbsdesign]

This is exactly what I am saying, 

AD has to fix this-to be able to manipulate global settings for rev. clouds.  

Currently, we don't have this option for AS2021.

It is not done right.

[acbsdesign · Accepted solution]

This tiny custom command would fix this until we can set up the default arc length:

Rectangular rev. cloud with pre-defined arc length

^C^C_^Rrevcloud _R;a;0.125;