Sketcher ConstrainSymmetric/pt-br: Difference between revisions
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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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{{GuiCommand/pt-br |
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{{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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|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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}} |
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==Description== |
==Description== |
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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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==Usage== |
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See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]]. |
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===[[Sketcher_Workbench#Continue_modes|Continue mode]]=== |
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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=== |
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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== |
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* The arrows of this constraint show the color of the dimensional constraints. |
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==How to use== |
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== Scripting == |
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[[File:SymmetricConstraint1.png|256px]] |
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Two points and a symmetry line: |
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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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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, SymmetryLine))}} |
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[[File:SymmetricConstraint2.png|256px]] |
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Two points and a symmetry point: |
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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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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, LineS, PointOfLineS))}} |
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This will apply the constraint to the selected items. |
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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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[[File:SymmetricConstraint3.png|256px]] |
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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line, 1, Line, 2, LineS, PointOfLineS))}} |
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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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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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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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Latest revision as of 10:54, 7 May 2024
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 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.
- 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.
- 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.
Sketcher
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- Geometric constraints: Coincident, Point on object, Vertical, Horizontal, Parallel, Perpendicular, Tangent, Equal, Symmetric, Block
- Dimensional constraints: Lock, Horizontal distance, Vertical distance, Distance, Radius or weight, Diameter, Auto radius/diameter, Angle, Refraction (Snell's law)
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- Sketcher virtual space: Switch virtual space
- Additional: Sketcher Dialog, Preferences, Sketcher scripting
User documentation
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