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by Joel_graff
Wed Jul 21, 2021 12:18 pm
Forum: Open discussion
Topic: FreeCAD passes 9600 stars on GitHub
Replies: 137
Views: 20935

Re: FreeCAD passes 9600 stars on GitHub

It surprises me to see the rate of growth hasn't tapered off to it's pre-2018 rate. It suggests to me that FreeCAD is being more generally accepted as a viable alternative to the commercial options.
by Joel_graff
Wed Jun 30, 2021 1:54 pm
Forum: IFC
Topic: Shared civil libraries between FreeCAD and the BlenderBIM Add-on and IFC integration
Replies: 7
Views: 1090

Re: Shared civil libraries between FreeCAD and the BlenderBIM Add-on and IFC integration

That looks like it would be useful. I presume it's a spline-based implementation, though it may not be. The LandXML specification provides documentation of what's required for transportation engineering horizontal and vertical alignments and, for engineering purposes, mathematical simple, compound, ...
by Joel_graff
Wed Jun 30, 2021 1:34 pm
Forum: IFC
Topic: Shared civil libraries between FreeCAD and the BlenderBIM Add-on and IFC integration
Replies: 7
Views: 1090

Re: Shared civil libraries between FreeCAD and the BlenderBIM Add-on and IFC integration

Just wondering what the status is on these projects, and the work required to turn the under-the-hood calculations for (initially) swept path analysis into a FreeCAD agnostic library so that we can share the code for the BlenderBIM Add-on :) Similarly, I'd like to integrate this with IfcOpenShell's...
by Joel_graff
Wed Jun 30, 2021 1:31 pm
Forum: Python scripting and macros
Topic: Part API Euler Spirals?
Replies: 39
Views: 3785

Re: Part API Euler Spirals?

I'm happy to help with whatever project may need it - my implementation is limited to finite / infinite transitions only, though (each spiral segment begins at the origin / infinite radius). It seems to work quite well for all of my purposes. I don't claim it's perfect or well optimized.
by Joel_graff
Mon Jun 14, 2021 4:21 pm
Forum: Python scripting and macros
Topic: Part API Euler Spirals?
Replies: 39
Views: 3785

Re: Part API Euler Spirals?

While lines, circles or arcs are directly supported by OCCT this is not the case for Euler spirals. So, the only feasible way is to have a function that creates (an approximated) B-Spline curve from an Euler spiral. This function can be part of FreeCAD or a Python add-on. Are there any formulas to ...
by Joel_graff
Mon Jun 14, 2021 1:43 pm
Forum: Open discussion
Topic: FreeCAD Trails Workbench (Transportation and Geomatics)
Replies: 535
Views: 53682

Re: Trails Workbench (Transportation and Earthwork Workbench)

Hi. Can you take a look to your arc geometry? Because sometimes arc.get_points() function doesnt return the last point of arc object. Sorry I've been absent. The last few weeks have been busy for me and I've not really had any time to work on FreeCAD. Anyway, do you have an example that I can use t...
by Joel_graff
Mon May 10, 2021 12:26 pm
Forum: Open discussion
Topic: Civil engineering feature implementation (Transportation Engineering)
Replies: 1258
Views: 117045

Re: Civil engineering feature implementation (Transportation Engineering)

I dont think that a good idea to save and restore model from xml file. So I think my model keeper property working well. Because your solution couse permission errors. But we can use your exporter to export xml files to use with other softwares. That's fine. I was just trying to follow up on this b...
by Joel_graff
Thu May 06, 2021 3:21 pm
Forum: Open discussion
Topic: Civil engineering feature implementation (Transportation Engineering)
Replies: 1258
Views: 117045

Re: Civil engineering feature implementation (Transportation Engineering)

09:56:55 Traceback (most recent call last): File "C:\Users\hakan.seven\AppData\Roaming\FreeCAD\Mod\freecad.trails\freecad\trails\design\alignment\horizontal_alignment.py", line 546, in onChanged stations = self.get_stations(vobj.Object) File "C:\Users\hakan.seven\AppData\Roaming\Free...
by Joel_graff
Thu May 06, 2021 3:13 pm
Forum: Open discussion
Topic: Civil engineering feature implementation (Transportation Engineering)
Replies: 1258
Views: 117045

Re: Civil engineering feature implementation (Transportation Engineering)

That is pretty neat! It looks like a spline-based implementation, which is generally useless for traditional transportation engineering design. Microelly and I spent several weeks trying to figure out how to design a spline that reduced to simple curves. I'm sure it's a solvable problem, but not wit...
by Joel_graff
Mon Apr 19, 2021 12:42 pm
Forum: Developers corner
Topic: Nurbs converted code
Replies: 22
Views: 2232

Re: To anyone care of using Microelly's converted code

I don't really have a way to reach out to Microelly, if that's the question. Apart from that, I also haven't really worked with his code except for a couple small projects he and I collaborated on related to Trails. I understand the challenge, though - he didn't write well-commented production code....

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