The rotation F5 shortcut does no work this two object selected.
I.e. two ligne selected
Could you solve this problem.
Best regards, thinks.
F5 does not work
Moderator: andrew
Forum rules
Always indicate your operating system and QCAD version.
Attach drawing files and screenshots.
Post one question per topic.
Always indicate your operating system and QCAD version.
Attach drawing files and screenshots.
Post one question per topic.
-
abercet
- Newbie Member
- Posts: 7
- Joined: Mon Mar 05, 2018 9:24 pm
- Location: WIMY(FRANCE)
F5 does not work
- Attachments
-
- Capture d'écran 2025-03-01 071157.png (53.33 KiB) Viewed 27791 times
-
CVH
- Premier Member
- Posts: 4955
- Joined: Wed Sep 27, 2017 4:17 pm
Re: F5 does not work
Hi,
Confirmed.
Recently implemented Center of Rotation = Centroid of convex bounding polygon fails (3.31.2).
Also refer to this conversation.
Probably because there is no size in Y and calculations (sum of products divided by factors) with zero make everything NaN.
An edge case that is overlooked.
Similar when there is no size in X.
Similar when they were drawn at 45°.
The solution is to force the old default behavior.
See menu: Edit .. Application Preferences .. Edit .. Rotate
Select the method: = Center of bounding box.
Please file a Bug report on QCAD Bugtracker
The use of the Centroid was intended to ensures reversibility.
Fails the intention for these inline shapes drawn at an angle not [0-45-90-135-180-225-270-315-360] degrees.
But it is more complex then that, it can also fail to rotate at all.
Kinda expected failing but on another level.
BTW:
With two Line segments of unequal length the center of rotation will never be in the middle of the void.
Unless you place the relative zero there and use the third option by preference.
Then it is more practical to use RO with the center of rotation defined by Snap Middle Manual (SN)
PS:
Although the approach with a Hull is a bit different.
This issue is also one of the reasons why the 2D Centroids methods that I contributed do not handle multiple shapes.
See menu Misc .. Information .. 2D Centroids.
Also refer to this topic, summing wire centroids in this case.
Regards,
CVH
Confirmed.
Recently implemented Center of Rotation = Centroid of convex bounding polygon fails (3.31.2).
Also refer to this conversation.
Probably because there is no size in Y and calculations (sum of products divided by factors) with zero make everything NaN.
An edge case that is overlooked.
Similar when there is no size in X.
Similar when they were drawn at 45°.
The solution is to force the old default behavior.
See menu: Edit .. Application Preferences .. Edit .. Rotate
Select the method: = Center of bounding box.
Please file a Bug report on QCAD Bugtracker
The use of the Centroid was intended to ensures reversibility.
Fails the intention for these inline shapes drawn at an angle not [0-45-90-135-180-225-270-315-360] degrees.But it is more complex then that, it can also fail to rotate at all.
Kinda expected failing but on another level.
BTW:
With two Line segments of unequal length the center of rotation will never be in the middle of the void.
Unless you place the relative zero there and use the third option by preference.
Then it is more practical to use RO with the center of rotation defined by Snap Middle Manual (SN)
PS:
Although the approach with a Hull is a bit different.
This issue is also one of the reasons why the 2D Centroids methods that I contributed do not handle multiple shapes.
See menu Misc .. Information .. 2D Centroids.
Also refer to this topic, summing wire centroids in this case.
Regards,
CVH