Okay if I have an Object with a Face which has a Surface and four Edges.

From the Surface I can see that it is a UV Surface, is there a way to tell which Edges correspond to the U direction and which the V direction?

An example file

What if that Part also has parent's? I would expect that getting the GlobalPlacement would involve multiplications of all Placements from a Part at the root of a document all way down through other Parts until one gets to the targetObj and if the targetObj is a Link that Placements of the LinkedObj...

FreeCAD news mentions

wwmayer fixed a lot of bugs and developed a new function to approximate B‑Spline from points.

Where can I find more details on the function to create a B-Spline?

Thanks

It does work, but you have to use the correct label. doc.getObjectsByLabel("100_Adrenal_left\r") For whatever reason, the label of that object in your file has a carriage return control character at its end. Well the Mesh::Feature Objects were created as a result of Mesh.read(".... f...

doc = App.ActiveDocument doc.getObjectsByLabel("Cube") Unfortunately does not seem to work for Mesh::Features as created by Mesh.read :( testGetByLabels.FCStd >>> doc=FreeCAD.ActiveDocument >>> print(doc.getObjectsByLabel("worldVOL")) [<Part object>] >>> print(doc.getObjectsByLa...

Roy_043 wrote: ↑Wed Apr 03, 2024 7:08 am

Code: Select all

doc = App.ActiveDocument
doc.getObjectsByLabel("Cube")

Thanks, I had missed that one.

If I use FreeCAD Mesh facility to load an OBJ file, it loads but does nothing about Materials, Colour etc. I am trying to implement a load that preprocess the OBJ file to build a dictionary with {Name, [Material, Colour]} etc. I then use Mesh.read to read the OBJ file. I then wish to process the dic...

I would like to use a FC Mesh in a Part Python Feature, ideally without storing the Mesh as a separate Object in the Document i.e. having the mesh as a Link Property. I have tried the approach of passing in the mesh to the Part::FeaturePython and creating a Part::Shape with class GDMLMesh(GDMLsolid)...

Okay I am trying to understand the info I am getting from a Surface. i.e. Obj.Shape.Faces[x].Surface print(dir(surface)) 08:06:33 ['Content', 'Continuity', 'FirstUKnotIndex', 'FirstVKnotIndex', 'LastUKnotIndex', 'LastVKnotIndex', 'MaxDegree', 'MemSize', 'Module', 'NbUKnots', 'NbUPoles', 'NbVKnots', ...

It does not seem to matter how I access e.Curve I get an error <class 'TypeError'>: undefined curve type This error appears on degenerated edges (length=0, only 1 vertex). On RotationSweep, this faulty edge is the rotation center of the swept profiles. This same error also appears for example on th...