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.

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, ...

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...

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.

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 ...

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...

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...

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...

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...

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....