Sketcher: Vincolo Simmetria
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| Posizione nel menu |
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| Schizzo → Vincoli → Simmetria |
| Ambiente |
| Schizzo |
| Avvio veloce |
| S |
| Introdotto nella versione |
| - |
| Vedere anche |
| Parallela |
Descrizione
Il vincolo Simmetria forza due punti selezionati ad essere simmetrici rispetto ad una data linea. Entrambi i punti selezionati sono vincolati a giacere sulla normale alla linea di simmetria attraverso gli stessi due punti e sono vincolati equidistanti dalla linea.
Utilizzo
Selezionare due punti (vertici) e una linea nello schizzo. La linea e i punti selezionati assumono il colore verde scuro.
Fare clic sull'icona 
nella barra degli strumenti di vincolo o selezionare il Vincolo Simmetria dal sottomenu dell'ambiente Schizzo (o quello dell'ambiente PartDesign).
Questo applica il vincolo agli elementi selezionati.
Note: se si desidera definire un vincolo di simmetria rispetto a un punto, l'ordine della selezione è importante, a seconda che si selezioni lo strumento all'inizio o alla fine.
- Se si fa prima clic sullo strumento: selezionare il primo punto, quindi il punto di riferimento di simmetria e infine il secondo punto.
- Se si fa clic sullo strumento alla fine: selezionare il primo punto, quindi il secondo punto e infine il punto di riferimento di simmetria.
Vedere il tracker issue #4144, e la discussione nel forum.
Scripting
Two points and a symmetry line:
Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, SymmetryLine))
Two points and a symmetry point:
Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, LineS, PointOfLineS))
A line and a symmetry point (In the GUI one can select a line and a point, but it uses internally the same form as above, with the two extremities of the same line):
Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line, 1, Line, 2, LineS, PointOfLineS))
The Sketcher scripting page explains the values which can be used for Line1, Line2, LineS, Line, PointOfLine1, PointOfLine2 and PointOfLineS, and contains further examples on how to create constraints from Python scripts.
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