FreeCAD Forum

While implementation without parameter will be useful for other tickets, I am still having the issue with the sketch above. Any idea how to rewrite this thing so that the gradient of the y direction of the horizontal line does not get under the pivoting threshold (1e-13 default value)? I don't thin...

looks good to me, sorry i can't test now.

I'm not very interested in this feature personally, because i don't like detachable keyboards, but i like this small change.

So the problem is that if the user enters the same value for diameters, then the horizontal segment has a zero length and we get the Dogleg solver error. The error likely originates in OCC. In solver, line segments are represented by two vertices, and as long as their tangent vectors are not being ...

I had hoped to find the construction of the basis functions somewhere or the algorithm of de Boor. Can you direct me to the right function or file? de Boor is not implemented in freecad anywhere, as far as I know. FreeCAD just uses OCC. The OCC implementation is not suitable for sketch solver (lack...

DeepSOIC wrote: ↑

Sat Nov 28, 2020 1:19 pm

But constraintsolver doesn't have a nice mechanism to avoid the extra parameter, so far.

In ConstrainSolver's ConstraintEqualShape, no extra parameters are created. I have abandoned the project for too long, i don't even remember anything!

Also in view of ConstraintSolver, do you think the limitation of constraints not to introduce unnecessary parameters is sound, or too inflexible? Not introducing extra parameters is always a good idea. Complexity of matrix inversion is O(n^3) as far as I understand, and n^3 does grow fast. But cons...

Part-o-magic addon can help with it to some extent. It won't help with groups, but it definitely will help with Part containers. In fact, part-o-magic was created precisely to enable every workbench respect active container, and copy-paste is covered too. I was trying to introduce this into main fre...

nice bug hunt!

abdullah wrote: ↑

Fri Nov 27, 2020 1:34 pm

In master.

I was able to fix the sketch by deleting all equality constraints and creating them anew. Then, it took one more constraint to fully constrain it (i might have deleted another constraint by accident when deleting equalities). There are 74 equality constraints in my fixed sketch, there are 85 in the ...

I bet a bad tangency is to blame here. Let me take a look...

EDIT: no. Doesn't look like it, i haven't found any problematic tangencies yet.