Difference between revisions of "Sketcher ConstrainSymmetric/pt-br"

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<languages/>
 
<languages/>
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{{Docnav
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|[[Sketcher_ConstrainEqual|Equal]]
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|[[Sketcher_ConstrainBlock|Block]]
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|[[Sketcher_Workbench|Sketcher]]
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|IconL=Sketcher_ConstrainEqual.svg
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|IconR=Sketcher_ConstrainBlock.svg
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|IconC=Workbench_Sketcher.svg
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}}
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<div class="mw-translate-fuzzy">
 
<div class="mw-translate-fuzzy">
{{GuiCommand/pt-br|Name=Constraint Symmetric|Name/pt-br=Constraint Symmetric|Workbenches=[[Sketcher Workbench/pt-br|Sketcher]], [[PartDesign Workbench/pt-br|PartDesign]]|MenuLocation=Sketch → Sketcher constraints → Constrain symmetrical|SeeAlso=[[Constraint Parallel/pt-br|Constraint Parallel]]}}
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{{GuiCommand/pt-br
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|Name=Constraint Symmetric
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|Name/pt-br=Constraint Symmetric
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|Workbenches=[[Sketcher Workbench/pt-br|Sketcher]], [[PartDesign Workbench/pt-br|PartDesign]]
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|MenuLocation=Sketch → Sketcher constraints → Constrain symmetrical
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|SeeAlso=[[Sketcher_ConstrainParallel/pt-br|Constraint Parallel]]
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}}
 
</div>
 
</div>
  
==Description==
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==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.
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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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==Usage==
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[[File:SymmetricConstraint1.png|500px]]
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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.
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[[File:SymmetricConstraint2.png|500px]]
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Click on {{Button|[[File:Sketcher_ConstrainSymmetric.svg|16px]] [[Sketcher_ConstrainSymmetric|Constrain symmetric]]}} 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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[[File:SymmetricConstraint3.png|500px]]
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{{Emphasis|Note:}} Before Version 0.19 (see fix [https://github.com/FreeCAD/FreeCAD/pull/3746]), 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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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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== Scripting ==
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Two points and a symmetry line:
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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, SymmetryLine))}}
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Two points and a symmetry point:
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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, LineS, PointOfLineS))}}
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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):
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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line, 1, Line, 2, LineS, PointOfLineS))}}
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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
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|[[Sketcher_ConstrainEqual|Equal]]
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|[[Sketcher_ConstrainBlock|Block]]
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|[[Sketcher_Workbench|Sketcher]]
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|IconL=Sketcher_ConstrainEqual.svg
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|IconR=Sketcher_ConstrainBlock.svg
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|IconC=Workbench_Sketcher.svg
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}}
  
==Operation==
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{{Sketcher_Tools_navi{{#translation:}}}}
[[File:SymmetricConstraint1.png|256px]]<br /><br />
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{{Userdocnavi{{#translation:}}}}
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.
 

Latest revision as of 18:14, 20 March 2022

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Arrow-left.svg Previous: Sketcher ConstrainEqual.svg Equal
Next: Block Sketcher ConstrainBlock.svg Arrow-right.svg

Constraint Symmetric.svg Constraint Symmetric

Veja também
Sketch → Sketcher constraints → Constrain symmetrical
Bancadas de trabalho
Sketcher, PartDesign
Atalho padrão
Nenhum
Introduzido na versão
-
Veja também
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.

Usage

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 Sketcher ConstrainSymmetric.svg Constrain symmetric 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: Before Version 0.19 (see fix [1]), 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.

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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