Unfortunately, I can only model with implicit equations Why? Is it because there exists no parameter representation of the implicit surface you want to use? No. What I want to do is to enter an implicit equation in an input box and then model it, and I don't know in advance what the model represent...

microelly2 wrote: ↑Thu May 09, 2019 11:25 am see
https://docs.enthought.com/mayavi/mayavi/
https://youtu.be/r6OD07Qq2mw
there should be a way to export the cacluated surfaces to meshes and reimport them into FreeCAD.

Is it possible to integrate mayavi into FreeCAD?So I don't have to do import and export operations.

Attached is an extension of the curve creation macro to create surfaces instead. The representation of surfaces must also be given in parameter form. Implicit functions (i.e. F(x,y,z) = 0) are not supported. This means when you want to create a sphere you have to enter: X(u,v) = 10*sin(u)*cos(v) Y(...

chrisb wrote: ↑Thu May 09, 2019 6:36 am Expression are what you need here. If you have lots of them, you may consider using Spreadsheet Workbench.

As far as I know, this is just a place to save arguments or expressions, and it doesn't have modeling capabilities.

I'd like to add a feature for FreeCAD that creates a model by entering a function and a boundary.Do you know any tools or packages that can do this?For example, if I want to create a sphere, I can enter the formula X ^ 2 + Y ^ 2 + Z ^ 2-4 and give the scope of the model to prevent the model from bei...

I want to set a PropertyEnumeration to a sub-property of a PropertyVectorDistance.
Or set a same parent property for the PropertyEnumeration and PropertyVectorDistance .
All I want to do is bind these two properties.
How can I do it?

I want to build a model like the picture as followed. This model named Annular_Section, which was defined with four points and two radius. The ANNULAR_SECTION will produce an arc section of an annulus of rectangular cross section. Specify the two end points of the annular axis, Point1 and Point2, fo...

Jee-Bee wrote: ↑Wed Apr 24, 2019 6:15 am Yes you are clear now. Which mean it is something for a help topic and not developers topic

Sorry, I didn't notice it.
I consider that I'm going to add a new Modeling function in FreeCAD by using python. I thought that it was a developer topic.

Can you explain what you want to do? Is the deveopement forum needed for this? It sounds like a help request to me... I'm sorry that I didn't explain clearly. I want to build a model like that picture. This model named Annular_Section, which was defined with four points and two radius. The ANNULAR_...

How can I make a section of a Annular by using four points and two radius?