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by logari81
Thu Nov 20, 2014 4:00 pm
Forum: Developers corner
Topic: Solver/CGS architecture changes: Request for comment
Replies: 69
Views: 9330

Re: Solver/CGS architecture changes: Request for comment

Hi DevJohan, I have actually reviewed your refactoring and I like most of your changes. I hadn't realized that you vecorized the calculation of gradients, but it is great that you did. It is something that I also had in mind and I think your improvement will indeed have some performance impact. I wo...
by logari81
Wed Nov 19, 2014 5:16 pm
Forum: Developers corner
Topic: Solver/CGS architecture changes: Request for comment
Replies: 69
Views: 9330

Re: Solver/CGS architecture changes: Request for comment

Hi, it seems that you have a quite established idea of what you are aiming at. So your questions appear to be rather rhetorical. In any case if you want my honest opinion: 1. the idea of each geometry element defining a normal direction is something useful that I would do. Using angle constraints is...
by logari81
Tue Oct 07, 2014 8:16 pm
Forum: Developers corner
Topic: Sketcher: Ellipse support
Replies: 713
Views: 84510

Re: Sketcher: Ellipse support

hi, I see that you have come quite far with supporting ellipses. 1) When I code, I try to replicate the structures already in place, so that the code is uniform. that's a good habit. I can give you some hints specifically about freegcs: - AFAIR I avoided starting variables with capital letters and I...
by logari81
Mon Sep 15, 2014 9:13 am
Forum: Users Showcase
Topic: Locomotive & Wagon Assembly
Replies: 7
Views: 7145

Re: Locomotive & Wagon Assembly

I have just noticed that this model is one of the demos shown on the front page of the FC website and I wonder if there is a fcstd file corresponding to this model. Excuse me for questioning this but to me this model looks so complex that either wieszak is a very patient user to have done the assemb...
by logari81
Wed Apr 23, 2014 4:14 pm
Forum: Open discussion
Topic: Instability in part-design / solver
Replies: 31
Views: 5267

Re: Instability in part-design / solver

1 equation, 2 unknowns:
x^2+y^2=0
but there is a unique solution:
x=0, y=0
it is the same case like the sketch discussed above. Mathematically these cases can be detected but practically it is not very recomendable to constraint sketches this way.
by logari81
Mon Apr 21, 2014 8:07 pm
Forum: Help on using FreeCAD
Topic: Constrain to object edge in sketch mode
Replies: 1
Views: 1938

Re: Constrain to object edge in sketch mode

hi, yes indeed this question has been answered many times but it doesn't matter. Look below for the answer:
http://www.freecadweb.org/wiki/index.ph ... r_External
by logari81
Sat Apr 19, 2014 8:34 pm
Forum: Open discussion
Topic: Sketcher destroys topology
Replies: 13
Views: 2598

Re: Sketcher destroys topology

ulrich1a wrote:The solver replaced the 180° angle constraint with a parallel constraint.
I can't imagine how such behavior could be possible. I don't think that this can happen unless there are changes in the sketcher during the last year that I am not aware of.
by logari81
Mon Apr 14, 2014 5:31 pm
Forum: Help on using FreeCAD
Topic: Reorient sketch loses constraints
Replies: 15
Views: 4412

Re: Reorient sketch loses constraints

yes, your diagnosis seems right to me, good catch.
by logari81
Mon Apr 14, 2014 4:20 pm
Forum: Help on using FreeCAD
Topic: Reorient sketch loses constraints
Replies: 15
Views: 4412

Re: Reorient sketch loses constraints

If all constraints disappear (also those not involving external geometries) then this is a bug. They are not actually deleted, they are just hidden/disabled. This was a quirk for solving some issues with undoing/redoing. As far as I remember, the constraints list in a geometry is aware of the geomet...
by logari81
Tue Mar 11, 2014 5:38 pm
Forum: Assembly
Topic: Problem with sketches in experimental Assembly module
Replies: 6
Views: 2374

Re: Problem with sketches in experimental Assembly module

This is the problem that I assumed. Actually we had discussed about the positioning question like 2 years ago. Unfortunately we didn't come with a concrete common strategy about how to deal with the placement property. So that each of us had a different opinion/strategy in his mind. Myself, I used t...

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