Surface Sections
Surface Sections |
Menu location |
---|
Surface → Sections... |
Workbenches |
Surface |
Default shortcut |
None |
Introduced in version |
0.19 |
See also |
None |
Description
Surface Sections is used to create a surface from edges that represent transversal sections of surface.
Left: three control edges. Right: surface produced from these edges.
Usage
- Make sure you have at lease two edges or curves in space.
- Press the Surface sections button.
- Press Add edge.
- Click on the desired edges that you wish to use to create the surface; a preview of the final result will be produced on the 3D view.
- Press OK to complete the operation.
Properties
Data
Sections
- DataNSections (
LinkSubList
): a list of edges that will be used to build the curve.
View
Base
- ViewControl Points (
Bool
): it defaults tofalse
; if set totrue
, it will show an overlay with the control points of the surface.
Scripting
See also: FreeCAD Scripting Basics.
The Surface Section tool can be used in macros and from the Python console by adding the Surface::Sections
object. The edges to be used to define the surface must be assigned as a LinkSubList to the NSections
attribute of the object.
import FreeCAD as App
import Draft
doc = App.newDocument()
pl1 = App.Placement()
obj1 = Draft.make_circle(50, placement=pl1, face=False, startangle=0, endangle=180)
pl2 = App.Placement(App.Vector(0, 0, 25), App.Rotation())
obj2 = Draft.make_circle(30, placement=pl2, face=False, startangle=0, endangle=180)
points3 = [App.Vector(18, -10, 50),
App.Vector(12, 10, 50),
App.Vector(-12, 10, 50),
App.Vector(-18, -10, 50)]
obj3 = Draft.make_bspline(points3)
points4 = [App.Vector(15, -20, 100),
App.Vector(0, 6, 100),
App.Vector(-15, -20, 100)]
obj4 = Draft.make_bspline(points4)
doc.recompute()
surf = doc.addObject("Surface::Sections", "Surface")
surf.NSections = [(obj1, "Edge1"),
(obj2, "Edge1"),
(obj3, "Edge1"),
(obj4, "Edge1")]
doc.recompute()
User documentation
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