Da polilinha à BSpline
Appearance
This is the approved revision of this page, as well as being the most recent.
|
|
| Menu location |
|---|
| Modification → Convert Wire/B-Spline |
| Workbenches |
| Draft |
| Default shortcut |
| None |
| Introduced in version |
| - |
| See also |
| Draft Wire, Draft BSpline |
Descrição
The Draft WireToBSpline command converts Draft Wires to Draft BSplines and vice versa.
Converting a wire to a B-spline, and a closed B-spline to a closed wire
Utilização
- Select a Draft Wire or a Draft BSpline.
- There are several ways to invoke the command:
- Press the
Convert Wire/B-Spline button.
- Select the Modification →
Convert Wire/B-Spline option from the menu.
- Press the
- A new object is created.
Notas
- The command may result in a closed, self-intersecting Draft Wire or Draft BSpline with a face. Such an object will not display properly in the 3D View. Its DadosMake Face property, or its DadosClosed property, must be set to
false.
Scripting
See also: Autogenerated API documentation and FreeCAD Scripting Basics.
To convert a wire to a B-spline, or vice versa, pass the Points property of the source object to the make_bspline method, or respectively the make_wire method, of the Draft module.
Example:
import FreeCAD as App
import Draft
doc = App.newDocument()
p1 = App.Vector(1000, 1000, 0)
p2 = App.Vector(2000, 1000, 0)
p3 = App.Vector(2500, -1000, 0)
p4 = App.Vector(3500, -500, 0)
base_wire = Draft.make_wire([p1, p2, p3, p4])
base_spline = Draft.make_bspline([-p1, -1.3*p2, -1.2*p3, -2.1*p4])
points1 = base_wire.Points
spline_from_wire = Draft.make_bspline(points1)
points2 = base_spline.Points
wire_from_spline = Draft.make_wire(points2)
doc.recompute()
- Drafting: Line, Polyline, Fillet, Arc, Arc From 3 Points, Circle, Ellipse, Rectangle, Polygon, B-Spline, Cubic Bézier Curve, Bézier Curve, Point, Facebinder, ShapeString, Hatch
- Annotation: Text, Dimension, Label, Annotation Styles, Annotation Scale
- Modification: Move, Rotate, Scale, Mirror, Offset, Trimex, Stretch, Clone, Array, Polar Array, Circular Array, Path Array, Path Link Array, Point Array, Point Link Array, Edit, Highlight Subelements, Join, Split, Upgrade, Downgrade, Convert Wire/B-Spline, Draft to Sketch, Set Slope, Flip Dimension, Shape 2D View
- Draft Tray: Working Plane, Set Style, Toggle Construction Mode, AutoGroup
- Snapping: Snap Lock, Snap Endpoint, Snap Midpoint, Snap Center, Snap Angle, Snap Intersection, Snap Perpendicular, Snap Extension, Snap Parallel, Snap Special, Snap Near, Snap Ortho, Snap Grid, Snap Working Plane, Snap Dimensions, Toggle Grid
- Miscellaneous: Apply Current Style, New Layer, Manage Layers, New Named Group, SelectGroup, Add to Layer, Add to Group, Add to Construction Group, Toggle Wireframe, Working Plane Proxy, Heal, Show Snap Toolbar
- Additional: Constraining, Pattern, Preferences, Import Export Preferences, DXF/DWG, SVG, OCA, DAT
- Context menu:
- Most objects: Edit
- Layer container: Add New Layer, Reassign Properties of All Layers, Merge Layer Duplicates
- Layer: Activate Layer, Reassign Properties of Layer, Select Layer Contents
- Text and label: Open Links
- Wire: Flatten
- Working plane proxy: Save Camera Position, Save Visibility of Objects
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Material, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub