|
|
| Menu location |
|---|
| None |
| Workbenches |
| All |
| Default shortcut |
| None |
| Introduced in version |
| 1.1 |
| See also |
| Part DatumPlane, Part DatumLine, Part DatumPoint |
Descrizione
The Part CoordinateSystem command creates a local coordinate system, an LCS object, that can be attached to other objects. A coordinate system is one of several datum objects. A datum object is typically used to attach multiple other objects to. If the position or orientation of a datum object changes, all objects attached to it will follow.
A datum object can also provide a geometric reference for a feature or operation. Depending on its type it may for example be used as a direction vector, a rotation axis or a mirror plane.
Utilizzo
- Optionally activate the correct container, for example a
PartDesign Body, a 
Std Part or an 
Assembly. If multiple containers are active, the datum object is added to the active container that was created first. - Optionally select the geometry the datum object should be attached to.
- Press the
Coordinate System button. - The Attachment task panel opens.
- If no geometry has been selected: optionally press the OK button to finish the command without attaching the datum object.
- For further steps see Part EditAttachment. Continue from step 7 on that page if geometry has been preselected.
Note
- A datum object can also be put into a container by dropping it on the container in the Tree View.
- The attachment of a datum object can be changed by editing its DatiMap Mode property. See Part EditAttachment.
- The Part DatumPlane and Part DatumLine objects, and the planes and axes of the Part CoordinateSystem object are infinite.
Proprietà
See also: Property View.
A Part LCS object, formally a Part::LocalCoordinateSystem object, is derived from an App::LocalCoordinateSystem object. All its properties are inherited except those listed under Attachment.
Data
Attachment
The object has the same attachment properties as a Part Part2DObject.
Base
- Dati (hidden)Origin Features (
LinkList): The axes, planes and origin point controlled by the coordinate system. - DatiPlacement (
Placement): See Part Feature. - DatiLabel (
String): Idem. - Dati (hidden)Label2 (
String): Idem. - Dati (hidden)Expression Engine (
ExpressionEngine): Idem. - Dati (hidden)Visibility (
Bool): Idem. - DatiGroup (
LinkList): - Dati (hidden)_ Group Touched (
Bool):
Vista
Display Options
- VistaDisplay Mode (
Enumeration): See Part Feature. - VistaShow In Tree (
Bool): Idem. - VistaVisibility (
Bool): Idem.
Selection
- VistaOn Top When Selected (
Enumeration): See Part Feature. - VistaSelection Style (
Enumeration): Idem.
Script
import FreeCAD as App
doc = App.newDocument()
body = doc.addObject("PartDesign::Body", "Body")
lcs = doc.addObject("Part::LocalCoordinateSystem", "LCS")
lcs.Visibility = True
body.addObjects([lcs])
orig = body.Origin
plane = next(f for f in orig.OriginFeatures if f.Role == "XZ_Plane")
lcs.AttachmentSupport = [(orig, (plane.Name + ".", ))]
lcs.AttachmentOffset = App.Placement(App.Vector(), App.Vector(1, 0, 0), 45)
lcs.MapMode = "FlatFace"
doc.recompute()
Questa pagina è recuperata da https://wiki.freecad.org/Part_CoordinateSystem