Surface Filling
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|
Menu location |
---|
Surface → Filling... |
Workbenches |
Surface |
Default shortcut |
None |
Introduced in version |
- |
See also |
None |
Descriere
Surface Filling creates a surface from a series of connected boundary edges.
The surface can be modified by adding constraint edges and vertices which the surface must pass through.
Example of a filled surface, delimited by four edges located in the XY plane; (left) only the four edges, and (right) one additional curve in space that defines the curvature of the surface
Cum se folosește
The base edges that form the closed contour, as well as the auxiliary vertices and edges, can belong to 2D curves from Draft or the
Sketcher, but can also belong to 3D solid objects such as those created with the
Part or
PartDesign Workbenches.
Opţiuni
- Inside the Filling section.
- Add edge: press once to start picking edges in the 3D view. Individual lines such as
Draft BSplines and
Sketcher BSplines can be chosen, as well as any edge from solid objects, like those of
PartDesign Bodies and
Part Primitives.
- Remove edge: press once to start picking edges in the 3D view; these must be edges that were previously picked with Add edge.
- Add edge: press once to start picking edges in the 3D view. Individual lines such as
- Right mouse button: open the context menu and select Remove, or press Del in the keyboard, to remove the currently selected edge in the list.
- Inside the Unbound Edges section similar Add edge and Remove edge buttons are available to pick supporting edges to control the curvature of the original surface.
- Inside the Filling section similar Add vertex and Remove vertex buttons are available, in this case to pick supporting vertices.
- Press Cancel or Esc to abort the current operation.
Proprietăți
A Surface Filling (Surface::Filling
class) is derived from the basic Part Feature (Part::Feature
class, through the Part::Spline
subclass), therefore it shares all the latter's properties.
In addition to the properties described in Part Feature, the Surface Filling has the following properties in the property editor.
Data
Filling
- DateProperty: descrierea proprietăților
- VizualizareProperty: descrierea proprietăților
View
Base
- VizualizareControl 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 Filling tool can be used in macros and from the Python console by adding the Surface::Filling
object.
- The edges to be used to define the surface must be assigned as a LinkSubList to the
BoundaryEdges
property of the object. - Auxiliary edges and vertices must be assigned as a LinkSubLists to the
UnboundEdges
andPoints
properties of the object. - All objects with edges need to be computed before they can be used as input for the properties of the Filling object.
import FreeCAD as App
import Draft
doc = App.newDocument()
a = App.Vector(-20, -20, 0)
b = App.Vector(-18, 25, 0)
c = App.Vector(60, 26, 0)
d = App.Vector(33, -20, 0)
points1 = [a, App.Vector(-20, -8, 0), App.Vector(-17, 7, 0), b]
obj1 = Draft.make_bspline(points1)
points2 = [b, App.Vector(0, 25, 0), c]
obj2 = Draft.make_bspline(points2)
points3 = [c, App.Vector(37, 4, 0), d]
obj3 = Draft.make_bspline(points3)
points4 = [d, App.Vector(-2, -18, 0), a]
obj4 = Draft.make_bspline(points4)
doc.recompute()
surf = doc.addObject("Surface::Filling", "Surface")
surf.BoundaryEdges = [(obj1, "Edge1"),
(obj2, "Edge1"),
(obj3, "Edge1"),
(obj4, "Edge1")]
doc.recompute()
# ---------------------------------------------------------
points_spl = [App.Vector(-10, 0, 2),
App.Vector(4, 0, 7),
App.Vector(18, 0, -5),
App.Vector(25, 0, 0),
App.Vector(30, 0, 0)]
aux_edge = Draft.make_bspline(points_spl)
doc.recompute()
surf.UnboundEdges = [(aux_edge, "Edge1")]
doc.recompute()
# ---------------------------------------------------------
aux_v1 = Draft.make_line(App.Vector(-13, -12, 5),
App.Vector(-13, -12, -5))
aux_v2 = Draft.make_line(App.Vector(-3, 18, 5),
App.Vector(-3, 18, -5))
doc.recompute()
surf.Points = [(aux_v1, "Vertex2"),
(aux_v2, "Vertex1")]
doc.recompute()
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