Sketcher ConstrainSymmetric: Difference between revisions

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<languages/>
{{GuiCommand|Name=Constraint_Symmetric|Workbenches=[[Sketcher Workbench|Sketcher]], [[PartDesign Module|PartDesign_Workbench]]|MenuLocation=Sketcher → Constrain symmetrical|SeeAlso=[[Constraint parallel]]]}}
<translate>


<!--T:5-->
====Description====
{{Docnav
|[[Sketcher_ConstrainEqual|Equal]]
|[[Sketcher_ConstrainBlock|Block]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainEqual.svg
|IconR=Sketcher_ConstrainBlock.svg
|IconC=Workbench_Sketcher.svg
}}


<!--T:1-->
<WRONG> This tool draws an arc by picking three points: the center, the start angle along the radius, and the end angle.
{{GuiCommand
|Name=Sketcher ConstrainSymmetric
|MenuLocation=Sketch → Sketcher constraints → Constrain symmetric
|Workbenches=[[Sketcher_Workbench|Sketcher]]
|Shortcut={{KEY|S}}
|SeeAlso=
}}


==Description== <!--T:17-->
When starting the tool, the mouse pointer changes to a white cross with a red arc icon. The coordinates of the pointer are shown beside it in blue in real time.


<!--T:2-->
[[Image:Sketcher_ArcExample1.png|The center has been selected, dragging to set the radius‎]] [[Image:Sketcher_ArcExample2.png|407x360px|The center and start angle have been selected, dragging to set end angle‎]] </WRONG>
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.


====Usage====
==Usage== <!--T:3-->


<!--T:23-->
<WRONG> * Pick points on an empty area of the 3D view, or on an existing object (auto constraints must be active in TaskView).
See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].
* Pressing {{KEY|ESC}} or clicking the right mouse button cancels the function. </WRONG>


===[[Sketcher_Workbench#Continue_modes|Continue mode]]=== <!--T:24-->


<!--T:25-->
{{languages | {{es|Sketcher_Arc/es}} }}
# 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=== <!--T:26-->

<!--T:27-->
# 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.

== Scripting == <!--T:18-->

<!--T:19-->
Two points and a symmetry line:

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

<!--T:20-->
Two points and a symmetry point:

</translate>
{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Symmetric', Line1, PointOfLine1, Line2, PointOfLine2, LineS, PointOfLineS))}}
<translate>

<!--T:21-->
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):

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

<!--T:22-->
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.


<!--T:6-->
{{Docnav
|[[Sketcher_ConstrainEqual|Equal]]
|[[Sketcher_ConstrainBlock|Block]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainEqual.svg
|IconR=Sketcher_ConstrainBlock.svg
|IconC=Workbench_Sketcher.svg
}}

</translate>
{{Sketcher_Tools_navi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}

Revision as of 13:19, 24 April 2024

Sketcher ConstrainSymmetric

Menu location
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

  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.

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.