Sketcher ConstrainSymmetric/it: Difference between revisions

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{{GuiCommand|Name=Constraint Symmetric|Workbenches=[[Sketcher Workbench|Sketcher]], [[PartDesign Workbench|PartDesign]]|MenuLocation=Sketch → Sketcher constraints → Constrain symmetrical|SeeAlso=[[Constraint Parallel]]}}


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====Description====
{{Docnav/it|[[Sketcher_ConstrainEqual/it|Uguale lunghezza]]|[[Sketcher_ConstrainBlock/it|Fissa]]|[[Sketcher_Workbench/it|Sketcher]]|IconL=Constraint_EqualLength.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainBlock.png}}
The symmetrical constraint constrains two selected points to be symmetrical around a given line, i.e., both selected points are constrained to lie on a normal to the line through both points and are constrained to be equidistant from the line. Alternatively it can constrain two points to be symmetric with respect to a third one.
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====Operation====
{{GuiCommand/it|Name=Sketcher ConstrainSymmetric|Name/it=Simmetria|Workbenches=[[Sketcher Workbench/it|Schizzo]]|MenuLocation=Schizzo → Vincoli → Simmetria|Shortcut=S|SeeAlso=[[Sketcher ConstrainParallel/it|Parallela]]}}
[[File:SymmetricConstraint1.png|256px]]<br /><br />
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Select two points (vertexes) in the sketch and a line in the sketch. The selected points and the line will be dark green.<br /><br />
[[File:SymmetricConstraint2.png|256px]]<br /><br />
Click on the SymmetricalConstraint icon [[File:Constraint_Symmetric.png|16px]] in the Sketcher toolbar or select the Constrain Symmetrical menu item from the Sketcher Constraints sub menu of the Sketcher (or Part Design) menu item.
This will apply the constraint to the selected items.<br /><br />
[[File:SymmetricConstraint3.png|256px]]<br /><br />
This is a geometric constraint and has no editable parameters.


<span id="Description"></span>
<languages/>
==Descrizione==

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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.
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<span id="Usage"></span>
==Utilizzo==

See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].

===[[Sketcher_Workbench#Continue_modes|Continue mode]]===

# Make sure there is no selection.
# There are several ways to invoke the tool:
#* Press the {{Button|[[Image:Sketcher_ConstrainSymmetric.svg|16px]] [[Sketcher_ConstrainSymmetric|Constrain symmetric]]}} button.
#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainSymmetric.svg|16px]] Constrain symmetric}} option from the menu.
#* {{Version|1.0}}: Right-click in the [[3D_view|3D view]] and select the {{MenuCommand|Constrain → [[Image:Sketcher_ConstrainSymmetric.svg|16px]] Constrain symmetric}} option from the context menu.
#* Use the keyboard shortcut: {{KEY|S}}.
# The cursor changes to a cross with the tool icon.
# Do one of the following:
#* Select two points and a symmetry point (in that order).
#* Select two points and a symmetry line (idem).
#* Select a point, a symmetry line and another point (idem).
#* Select a line and a symmetry point (idem).
# A constraint is added.
# Optionally keep creating constraints.
# To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool.

===Run-once mode===

# Do one of the following:
#* Select two points and a symmetry point (in that order).
#* Select two points and a symmetry line (in any order).
#* Select a line and a symmetry point (idem).
# Invoke the tool as explained above, or with the following additional option:
#* {{Version|1.0}}: Right-click in the [[3D_view|3D view]] and select the {{MenuCommand|[[Image:Sketcher_ConstrainSymmetric.svg|16px]] Constrain symmetric}} option from the context menu.
# A constraint is added.

==Notes==

* The arrows of this constraint show the color of the dimensional constraints.

== Scripting ==

Two points and a symmetry line:

{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, SymmetryLine))}}

Two points and a symmetry point:

{{Code|code=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):

{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line, 1, Line, 2, LineS, PointOfLineS))}}

The [[Sketcher_scripting|Sketcher scripting]] page explains the values which can be used for {{incode|Line1}}, {{incode|Line2}}, {{incode|LineS}}, {{incode|Line}}, {{incode|PointOfLine1}}, {{incode|PointOfLine2}} and {{incode|PointOfLineS}}, and contains further examples on how to create constraints from Python scripts.


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{{Docnav/it|[[Sketcher_ConstrainEqual/it|Uguale lunghezza]]|[[Sketcher_ConstrainBlock/it|Fissa]]|[[Sketcher_Workbench/it|Sketcher]]|IconL=Constraint_EqualLength.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainBlock.png}}
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Latest revision as of 10:54, 7 May 2024

Simmetria

Posizione nel menu
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

See also: Drawing aids.

Continue mode

  1. Make sure there is no selection.
  2. There are several ways to invoke the tool:
    • Press the Constrain symmetric button.
    • Select the Sketch → Sketcher constraints → Constrain symmetric option from the menu.
    • introduced in version 1.0: Right-click in the 3D view and select the Constrain → Constrain symmetric option from the context menu.
    • Use the keyboard shortcut: S.
  3. The cursor changes to a cross with the tool icon.
  4. Do one of the following:
    • Select two points and a symmetry point (in that order).
    • Select two points and a symmetry line (idem).
    • Select a point, a symmetry line and another point (idem).
    • Select a line and a symmetry point (idem).
  5. A constraint is added.
  6. Optionally keep creating constraints.
  7. To finish, right-click or press Esc, or start another geometry or constraint creation tool.

Run-once mode

  1. Do one of the following:
    • Select two points and a symmetry point (in that order).
    • Select two points and a symmetry line (in any order).
    • Select a line and a symmetry point (idem).
  2. Invoke the tool as explained above, or with the following additional option:
  3. A constraint is added.

Notes

  • The arrows of this constraint show the color of the dimensional constraints.

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.