Sketcher ConstrainSymmetric: Difference between revisions
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{{Docnav |
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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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|[[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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{{GuiCommand |
{{GuiCommand |
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|Name=Sketcher ConstrainSymmetric |
|Name=Sketcher ConstrainSymmetric |
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|MenuLocation=Sketch → Sketcher constraints → Constrain symmetric |
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|Workbenches=[[Sketcher Workbench|Sketcher]] |
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|Workbenches=[[Sketcher_Workbench|Sketcher]] |
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|MenuLocation=Sketch → Sketcher constraints → Constrain symmetrical |
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|Shortcut=S |
|Shortcut={{KEY|S}} |
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|SeeAlso= |
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|SeeAlso=[[Sketcher ConstrainParallel|Constraint Parallel]] |
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}} |
}} |
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==Description== <!--T: |
==Description== <!--T:17--> |
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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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The [[Image:Sketcher_ConstrainSymmetric.svg|24px]] [[Sketcher_ConstrainSymmetric|Sketcher ConstrainSymmetric]] tool constrains two points to be symmetrical around a line or axis, or around a third point. |
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[[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 /> |
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[[File:SymmetricConstraint2.png|256px]]<br /><br /> |
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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.<br /><br /> |
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[[File:SymmetricConstraint3.png|256px]]<br /><br /> |
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This is a geometric constraint and has no editable parameters. |
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==Usage== <!--T:3--> |
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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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See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]]. |
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{{Sketcher Tools navi}} |
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===[[Sketcher_Workbench#Continue_modes|Continue mode]]=== <!--T:24--> |
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{{Userdocnavi}} |
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# Make sure there is no selection. |
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# There are several ways to invoke the tool: |
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#* Press the {{Button|[[Image:Sketcher_ConstrainSymmetric.svg|16px]] [[Sketcher_ConstrainSymmetric|Constrain symmetric]]}} button. |
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#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainSymmetric.svg|16px]] Constrain symmetric}} option from the menu. |
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#* {{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. |
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#* Use the keyboard shortcut: {{KEY|S}}. |
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# The cursor changes to a cross with the tool icon. |
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# Do one of the following: |
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#* Select two points and a symmetry point (in that order). |
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#* Select two points and a symmetry line (idem). |
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#* Select a point, a symmetry line and another point (idem). |
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#* Select a line and a symmetry point (idem). |
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# A constraint is added. |
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# Optionally keep creating constraints. |
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# To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool. |
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===Run-once mode=== <!--T:26--> |
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# Do one of the following: |
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#* Select two points and a symmetry point (in that order). |
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#* Select two points and a symmetry line (in any order). |
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#* Select a line and a symmetry point (idem). |
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# Invoke the tool as explained above, or with the following additional option: |
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#* {{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. |
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# A constraint is added. |
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==Notes== <!--T:28--> |
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* The arrows of this constraint show the color of the dimensional constraints. |
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== Scripting == <!--T:18--> |
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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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}} |
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Latest revision as of 10:54, 7 May 2024
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Menu location |
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Sketch → Sketcher constraints → Constrain symmetric |
Workbenches |
Sketcher |
Default shortcut |
S |
Introduced in version |
- |
See also |
None |
Description
The Sketcher ConstrainSymmetric tool constrains two points to be symmetrical around a line or axis, or around a third point.
Usage
See also: Drawing aids.
Continue mode
- Make sure there is no selection.
- 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.
- Press the
- 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 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:
- introduced in version 1.0: Right-click in the 3D view and select the
Constrain symmetric option from the context menu.
- introduced in version 1.0: Right-click in the 3D view and select the
- 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.
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