Difference between revisions of "Sketcher ConstrainSymmetric"

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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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<languages/>
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<translate>
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<!--T:5-->
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{{Docnav
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|[[Sketcher_ConstrainEqual|Equal Length]]
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|[[Sketcher_ConstrainBlock|Constrain Block]]
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|[[Sketcher_Workbench|Sketcher]]
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|IconL=Constraint_EqualLength.png
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|IconC=Workbench_Sketcher.svg
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|IconR=Sketcher_ConstrainBlock.png
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}}
  
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====Description====
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<!--T:1-->
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{{GuiCommand
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|Name=Sketcher ConstrainSymmetric
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|Workbenches=[[Sketcher Workbench|Sketcher]]
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|MenuLocation=Sketch → Sketcher constraints → Constrain symmetrical
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|Shortcut=S
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|SeeAlso=[[Sketcher ConstrainParallel|Constraint Parallel]]
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}}
  
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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.
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==Description== <!--T:2-->
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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====
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==How to use== <!--T:3-->
  
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<!--T:9-->
 
[[File:SymmetricConstraint1.png|256px]]
 
[[File:SymmetricConstraint1.png|256px]]
  
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<!--T:10-->
 
Select two points (vertexes) in the sketch and a line in the sketch. The selected points and the line will be dark green.
 
Select two points (vertexes) in the sketch and a line in the sketch. The selected points and the line will be dark green.
  
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<!--T:11-->
 
[[File:SymmetricConstraint2.png|256px]]
 
[[File:SymmetricConstraint2.png|256px]]
  
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<!--T:12-->
 
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.  
 
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.  
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This will apply the constraint to the selected items.
 
  
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<!--T:13-->
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This will apply the constraint to the selected items.
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<!--T:14-->
 
[[File:SymmetricConstraint3.png|256px]]
 
[[File:SymmetricConstraint3.png|256px]]
  
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This is a geometric constraint and has no editable parameters.
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<!--T:15-->
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{{Emphasis|Note:}} if you want to define a symmetry constraint with respect to a point, the order of the selection is important, depending on if you select the tool at the beginning or at the end.
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* If you click the tool first: select the first point, then the symmetry reference point, and finally the second point.
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* If you click the tool last: select the first point, then the second point, and finally the symmetry reference point.
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<!--T:16-->
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See the tracker [https://freecadweb.org/tracker/view.php?id=4144 issue #4144], and [https://forum.freecadweb.org/viewtopic.php?f=3&t=39611 forum thread].
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<!--T:6-->
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{{Docnav|[[Sketcher_ConstrainEqual|Equal Length]]|[[Sketcher_ConstrainBlock|Constrain Block]]|[[Sketcher_Workbench|Sketcher]]|IconL=Constraint_EqualLength.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainBlock.png}}
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<!--T:7-->
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{{Sketcher Tools navi}}
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<!--T:8-->
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{{Userdocnavi}}
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{{languages |  {{es|Constraint_Symmetric/es}} {{it|Constraint_Symmetric/it}} }}
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</translate>

Revision as of 08:57, 25 September 2019

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Arrow-left.svg Previous: Sketcher ConstrainEqual.png Equal Length

Sketcher ConstrainSymmetric.svg Sketcher ConstrainSymmetric

Menu location
Sketch → Sketcher constraints → Constrain symmetrical
Workbenches
Sketcher
Default shortcut
S
Introduced in version
-
See also
Constraint Parallel


Description

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.

How to use

SymmetricConstraint1.png

Select two points (vertexes) in the sketch and a line in the sketch. The selected points and the line will be dark green.

SymmetricConstraint2.png

Click on the SymmetricalConstraint icon Sketcher ConstrainSymmetric.png 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.

SymmetricConstraint3.png

Note: if you want to define a symmetry constraint with respect to a point, the order of the selection is important, depending on if you select the tool at the beginning or at the end.

  • If you click the tool first: select the first point, then the symmetry reference point, and finally the second point.
  • If you click the tool last: select the first point, then the second point, and finally the symmetry reference point.

See the tracker issue #4144, and forum thread.

Arrow-left.svg Previous: Sketcher ConstrainEqual.png Equal Length
Workbench Sketcher.svg Sketcher
User hub.png User documentation


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