Modifica: Posizionamento
Posizionamento |
Posizione nel menu |
---|
Modifica → Posizionamento... |
Ambiente |
Tutti |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Allinea, Azioni di posizionamento, Posizionamento |
Descrizione
Il comando Posizionamento visualizza la scheda azioni per il posizionamento di un oggetto selezionato.
La scheda di Posizionamento
Utilizzo
- Selezionare un singolo oggetto. L'oggetto deve avere una proprietà DatiPlacement.
- Selezionare l'opzione Modifica → Posizionamento... dal menu.
- Modificare uno o più parametri di traslazione e rotazione.
- Effettuare una delle seguenti operazioni:
- Premere il pulsante OK per applicare le modifiche e chiudere il pannello delle azioni.
- Premere il pulsante Applica per applicare le modifiche, ma tenere aperto il pannello delle azioni per ulteriori modifiche.
The dialog can also be launched by clicking on the ellipsis button ... that appears in the property editor when you click on the DatiPlacement property.
Note
- Il pannello delle azioni di posizionamento viene visualizzato anche quando si seleziona un oggetto, fare clic nel campo DatiPlacement nell'editor delle proprietà o nella vista combinata, quindi premere il pulsante ....
- Per ulteriori informazioni sui parametri di posizionamento, consultare le pagine Azioni di posizionamento e Posizionamento e il tutorial Aeroplano.
Script
Vedere anche: Script di base per FreeCAD
Vedere il tutorial di script Python.
A placement is internally defined by a matrix; in many cases it is simpler to represent it by means of two components, a Base
point (vector), and a Rotation
value. The Rotation
itself has different representations; it can be entirely defined by the value of a "quaternion" (xi + yj + zk + w)
, but it can also be described by a rotation Axis
(unit vector) and a rotation Angle
(radians).
import FreeCAD as App
doc = App.newDocument()
obj = doc.addObject("Part::Cylinder", "Cylinder")
print(obj.Placement)
# Placement [Pos=(0,0,0), Yaw-Pitch-Roll=(0,0,0)]
print(obj.Placement.Base)
# Vector (0.0, 0.0, 0.0)
print(obj.Placement.Rotation)
# Rotation (0.0, 0.0, 0.0, 1.0)
print(obj.Placement.Rotation.Angle)
# 0.0
print(obj.Placement.Rotation.Axis)
# Vector (0.0, 0.0, 1.0)
print(obj.Placement.Rotation.Q)
# (0.0, 0.0, 0.0, 1.0)
Move the base point of the object, then rotate the object 45 degrees around the X axis.
import math
obj.Placement.Base = App.Vector(5, 3, 1)
obj.Placement.Rotation.Axis = App.Vector(1, 0, 0)
obj.Placement.Rotation.Angle = math.radians(45)
print(obj.Placement)
# Placement [Pos=(5,3,1), Yaw-Pitch-Roll=(0,0,45)]
print(obj.Placement.Rotation.Q)
# (0.3826834323650898, 0.0, 0.0, 0.9238795325112867)
print(obj.Placement.Matrix)
# Matrix ((1,0,0,5),(0,0.707107,-0.707107,3),(0,0.707107,0.707107,1),(0,0,0,1))
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