Sketcher ConstrainSymmetric/ru: Difference between revisions

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<languages/>
<languages/>

<div class="mw-translate-fuzzy">
<div class="mw-translate-fuzzy">
{{Docnav/ru
{{Docnav/ru|[[Sketcher_ConstrainEqual/ru|Equal Length]]|[[Sketcher_ConstrainBlock/ru|Constrain Block]]|[[Sketcher_Workbench/ru|Sketcher]]|IconL=Constraint_EqualLength.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainBlock.png}}
|[[Sketcher_ConstrainEqual/ru|Ограничение эквивалентностью]]
|[[Sketcher_ConstrainBlock/ru|Ограничение перемещения]]
|[[Sketcher_Workbench/ru|Верстак "Sketcher"]]
|IconL=Sketcher_ConstrainEqual.svg
|IconR=Sketcher_ConstrainBlock.svg
|IconC=Workbench_Sketcher.svg
}}
</div>
</div>


<div class="mw-translate-fuzzy">
{{GuiCommand/ru
{{GuiCommand/ru
|Name/ru=Ограничение симметричности
|Name=Sketcher ConstrainSymmetric
|Name=Sketcher_ConstrainSymmetric
|Name/ru=Sketcher ConstrainSymmetric
|Workbenches=[[Sketcher Workbench/ru|Sketcher]]
|MenuLocation=Sketch → Ограничения эскиза → Ограничение симметричности
|MenuLocation=Sketch → Ограничения эскиза → Ограничение симметричности
|Workbenches=[[Sketcher_Workbench/ru|Sketcher]]
|Shortcut=S
|Shortcut=S
|SeeAlso=[[Sketcher ConstrainParallel/ru|Ограничение параллельности]]
|SeeAlso=[[Sketcher_ConstrainParallel/ru|Ограничение параллельности]]
}}
}}
</div>


<span id="Description"></span>
==Описание==
==Описание==
Ограничение симметричности требует от двух выделенных точек быть симметричными относительно данной линии, то есть от обеих точек требуется лежать на нормали к линии через обе точки на одинаковом расстоянии от линии. Альтернативно, она может наложить ограничение на две точки быть симметричными относительно третьей.


<div class="mw-translate-fuzzy">
<div class="mw-translate-fuzzy">
'''Ограничение симметричности''' требует от двух выделенных точек быть симметричными относительно данной линии, то есть от обеих точек требуется лежать на нормали к линии через обе точки на одинаковом расстоянии от линии. Альтернативно, она может наложить ограничение на две точки быть симметричными относительно третьей.
==Действие==
[[File:SymmetricConstraint1.png|256px]]<br /><br />
Выделите в эскизе две точки (вершины) и линию. Выделенные точки и линия станут тёмно-зелёными.<br /><br />
[[File:SymmetricConstraint2.png|256px]]<br /><br />
Кликните на иконке SymmetricalConstraint [[File:Constraint_Symmetric.png|16px]] на панели инструментов Sketcher или выделите меню Constrain Symmetrical в субменю Sketcher Constraints в разделе меню Sketcher (или Part Design).
Это назначит ограничения для выделенных элементов.<br /><br />
[[File:SymmetricConstraint3.png|256px]]<br /><br />
Это ограничение геометрическое и не имеет редактируемых параметров.
</div>
</div>


<span id="Usage"></span>
[[File:SymmetricConstraint1.png|256px]]
==Применение==


See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].
Select two points (vertexes) in the sketch and a line in the sketch. The selected points and the line will be dark green.


===[[Sketcher_Workbench#Continue_modes|Continue mode]]===
[[File:SymmetricConstraint2.png|256px]]


# Make sure there is no selection.
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.
# 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===
This will apply the constraint to the selected items.


# Do one of the following:
[[File:SymmetricConstraint3.png|256px]]
#* 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.


==Notes==
{{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.
* 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.


* The arrows of this constraint show the color of the dimensional constraints.
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].


<span id="Scripting"></span>
{{Docnav/ru|[[Sketcher_ConstrainEqual/ru|Equal Length]]|
==Программирование==
[[Sketcher_ConstrainBlock/ru|Constrain Block]]|[[Sketcher_Workbench/ru|Sketcher]]|IconL=Constraint_EqualLength.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainBlock.png}}


Two points and a symmetry line:
{{Sketcher Tools navi/ru}}

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

Two points and a symmetry point:

{{Code|code=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):

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

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.


<div class="mw-translate-fuzzy">
{{Docnav/ru
|[[Sketcher_ConstrainEqual/ru|Ограничение эквивалентностью]]
|[[Sketcher_ConstrainBlock/ru|Ограничение перемещения]]
|[[Sketcher_Workbench/ru|Верстак "Sketcher"]]
|IconL=Sketcher_ConstrainEqual.svg
|IconR=Sketcher_ConstrainBlock.svg
|IconC=Workbench_Sketcher.svg
}}
</div>


{{Sketcher_Tools_navi{{#translation:}}}}
{{Userdocnavi/ru}}
{{Userdocnavi{{#translation:}}}}

Latest revision as of 10:54, 7 May 2024

Ограничение симметричности

Системное название
Sketcher_ConstrainSymmetric
Расположение в меню
Sketch → Ограничения эскиза → Ограничение симметричности
Верстаки
Sketcher
Быстрые клавиши
S
Представлено в версии
-
См. также
Ограничение параллельности

Описание

Ограничение симметричности требует от двух выделенных точек быть симметричными относительно данной линии, то есть от обеих точек требуется лежать на нормали к линии через обе точки на одинаковом расстоянии от линии. Альтернативно, она может наложить ограничение на две точки быть симметричными относительно третьей.

Применение

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.

Notes

  • The arrows of this constraint show the color of the dimensional constraints.

Программирование

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.