[Feature Request] Removing one arrow from the radial dimension

[NewJoker]

Hi,

currently, the radial dimension in Draft has two arrows making it look like the diameter dimension:

draft radial dim.JPG (15.94 KiB) Viewed 2004 times

It would be nice to have an option to remove/hide one arrow to make it look like actual radial dimension.

The workaround is to overlay the dimension with a line having an arrow at the end and reduce the size of the dimension's arrows to almost zero. However, it's quite tedious, especially when there are multiple radial dimensions. Adding an option to remove one arrow of the radial dimension shouldn't be too complicated.

Also, it would be good to make FreeCAD automatically replace the diameter symbol with "R" when the Diameter property is set to true so that it's not necessary to do it manually for each dimension.

[chrisb]

A radius dimension should indeed have only one arrow.

[thomas-neemann]

...

until freecad can do that, i won't use arrows

Bildschirmfoto_2022-10-06_14-43-35.png (6.09 KiB) Viewed 1953 times

[yorik]

Currently dimensions have a "ShowLine" property that switches on/off the line and the arrows. Maybe we could separate this into 3 properties: ShowLine, ShowStartArrow and ShowEndArrow?

[thomas-neemann]

...

that sounds good

[yorik]

https://github.com/FreeCAD/FreeCAD/issues/7573

[chrisb]

separate this into 3 properties: ShowLine, ShowStartArrow and ShowEndArrow?

+1
What would happen to existing models? I don't think it would be serious if they had to be reworked.

[yorik]

What would happen to existing models? I don't think it would be serious if they had to be reworked.

I described it on the GH issue... Basically, if you load a model with the previous setup, the old behaviour applies

[NewJoker]

I offer a bounty for this: viewtopic.php?t=80395

It's a small thing but the workaround is really tedious so it would be great to add this option.

[calligarov]

Hi Everyone!

In these days I gave a look at this feature request.

After some modifications and test I think I achieved an acceptable result, you can see an example in the following gif:

RadialArrows.gif (489.86 KiB) Viewed 873 times

This also works when changing from radial dimension to diameter dimension and vice versa:

RadialDiameterArrows.gif (640.08 KiB) Viewed 873 times

@yorik, I made this modifications using the properties already available, haven't added new ones.
Is it necessary to add the other 2 properties you mentioned in your previous post?
My impression is that the goal is also to handle this cases in a manner similar to how other SW, for example InkScape, handles the end line symbols, giving to the user the possibility to specify separately the look of those symbols.

ATM I can't say if that's indeed necessary but for this specific case I'd say that it can be handled without the 2 new properties.

Regardless for that, if anyone of yours is interested to try my actual modifications I'll be happy to share the updated python files