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by uwestoehr
Wed Jul 17, 2019 11:26 am
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

I also agree we have to do something with this Let me summarize the problem from my point of view: We input the same set of constraints but depending on the order on how these constraints are set the solver either says everything is OK or it complains about an over-constraining. Mathematically spea...
by uwestoehr
Tue Jul 16, 2019 10:57 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

There is no need to report this bug, as we have discussed it before. It is one of these "silently drop a redundant constraint" issues. I don't agree. The same set of constraints cannot result one time on an over-constraint one time not. This is not how a solver should work. Using the same input par...
by uwestoehr
Tue Jul 16, 2019 10:22 pm
Forum: Developers corner
Topic: Back port commits to 0.18 branch
Replies: 68
Views: 5353

Re: Back port commits to 0.18 branch

+1 yorik and wmayer do a great job determining the commits to backport. Yes, the do great work. But maybe someone could help them. I guess they won't say no to some help in this respect for the gain of some time for other things they do. However, it was just an idea from the other projects I contri...
by uwestoehr
Tue Jul 16, 2019 10:17 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

openBrain wrote:
Tue Jul 16, 2019 6:27 pm
It's a bug ! It works but it shouldn't !
I like this bug :D .

Seriously, do you report the bug or do I?
by uwestoehr
Tue Jul 16, 2019 5:56 pm
Forum: Developers corner
Topic: Back port commits to 0.18 branch
Replies: 68
Views: 5353

Re: Back port commits to 0.18 branch

Should we tag 0.18.3 yet? I vote for yes. I also have 2 proposals: * to release every 2 months a point release (bugfixes only) * we nominate someone as "backport manager". Why a 2 month rhythm?: There were even crash bugs fixed but also other already fixed bugs are annoying for users and since ther...
by uwestoehr
Tue Jul 16, 2019 5:44 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

Interestingly, if I apply the Symmetry Constraint before the 4mm Horizontal Distance Constraint, there is no problem (one of the Conflicting Constraints probably got deleted). Many thanks, this works! :o : Sketch-symmetry-issue3.FCStd So what I want is possible but it matters in which order you app...
by uwestoehr
Tue Jul 16, 2019 5:39 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

My Solver messages report that the Sketch is Over Constrained (not that there are Redundant Constraints). Yes, sorry for being incorrect. 1. Apply the Equality Constraint to the two vertical edges, or less desirably, 2. Apply the Symmetry to upper right and lower left vertices, or to upper left and...
by uwestoehr
Tue Jul 16, 2019 5:31 pm
Forum: Help on using FreeCAD
Topic: cannot set coincident constraint in sketch
Replies: 16
Views: 205

Re: cannot set coincident constraint in sketch

Changing the Autoconstraint attribute on the View tab has no effect here. When opening the sketch the global preference is always used. In fact when closing the sketch the Autoconstraint attribute on the View tab is updated to match the global preference. One has to distinguish, see 4058 : Case A: ...
by uwestoehr
Tue Jul 16, 2019 2:19 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

Can someone confirm (preferably with 0.19 version) ? With 0.18 not 0.19 I get correctly only 2 DOF. OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.17331 (Git) Build type: Release Branch: master Hash: cf18161dc26267c259ac21675cb9637263bf4152 Python version: 3.6.6 Q...
by uwestoehr
Tue Jul 16, 2019 2:13 pm
Forum: Help on using FreeCAD
Topic: sketcher: wrong redundancy solving with symmetry
Replies: 22
Views: 219

Re: sketcher: wrong redundancy solving with symmetry

I guess you perfectly understand it's redundant. Thanks for having a look. But I cannot follow your argumentation because when I delete the symmetry constraint I get 1 DOF. Then I can change the horizontal and y-position. An example: Sketch-symmetry-issue2.FCStd But as you write: "symmetry against ...

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