Vazba souměrnosti
Constraint Symmetric |
Umístění Menu |
---|
Sketch → Sketcher constraints → Constrain symmetrical |
Pracovní stoly |
Náčrt, Návrh dílu |
Výchozí zástupce |
Nikdo |
Představen ve verzi |
- |
Viz také |
Vazba rovnoběžnosti |
Description
Popis
Vazba souměrnosti zajistí, že dva vybrané body jsou souměrné podle zadané přímky, např. oba vybrané body budou ležet na kolmici k přímce procházející oběma body a budou stejně vzdálené od přímky. Případně oba body mohou být souměrně uloženy ke třetímu bodu.
Postup
Vyberte v náčrtu dva body (vrcholy) a přímku. Vybrané body a přímka změní barvu na tmavězelenou.
Klikněte na ikonu Vazba souměrnosti v nástrojovém pruhu Náčrtu nebo vyberte položku Vazba souměrnosti ze submenu Vazba souměrnosti z menu Náčrtu (nebo Návrh dílu).
Tím aplikujete vazbu na vybrané položky.
Toto je geometrické vazba a nemá žádné parametry.
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.
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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