Sketcher ConstrainSymmetric/ru: 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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{{Docnav/ru |
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|[[Sketcher_ConstrainEqual/ru|Ограничение эквивалентностью]] |
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|[[Sketcher_ConstrainBlock/ru|Ограничение перемещения]] |
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|[[Sketcher_Workbench/ru|Верстак "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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{{GuiCommand/ru |
{{GuiCommand/ru |
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|Name/ru=Ограничение симметричности |
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|Name=Sketcher ConstrainSymmetric |
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|Name=Sketcher_ConstrainSymmetric |
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⚫ | |||
|MenuLocation=Sketch → Ограничения эскиза → Ограничение симметричности |
|MenuLocation=Sketch → Ограничения эскиза → Ограничение симметричности |
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⚫ | |||
|Shortcut=S |
|Shortcut=S |
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|SeeAlso=[[ |
|SeeAlso=[[Sketcher_ConstrainParallel/ru|Ограничение параллельности]] |
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}} |
}} |
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</div> |
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==Описание== |
==Описание== |
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⚫ | 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. |
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⚫ | '''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. |
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==Operation== |
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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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This will apply the constraint to the selected items.<br /><br /> |
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This is a geometric constraint and has no editable parameters. |
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==Применение== |
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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 Tools navi}} |
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Выделите в эскизе две точки (вершины) и линию. Выделенные точки и линия станут тёмно-зелёными. |
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<div class="mw-translate-fuzzy"> |
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</div> |
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Это назначит ограничения для выделенных элементов. |
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{{Emphasis|Note:}} Before Version 0.19 (see fix [https://github.com/FreeCAD/FreeCAD/pull/3746]), 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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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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==Программирование== |
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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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<div class="mw-translate-fuzzy"> |
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{{Docnav/ru |
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|[[Sketcher_ConstrainEqual/ru|Ограничение эквивалентностью]] |
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|[[Sketcher_ConstrainBlock/ru|Ограничение перемещения]] |
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|[[Sketcher_Workbench/ru|Верстак "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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</div> |
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{{Sketcher_Tools_navi{{#translation:}}}} |
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{{Userdocnavi}} |
{{Userdocnavi{{#translation:}}}} |
Latest revision as of 20:25, 20 March 2022
Ограничение симметричности |
Системное название |
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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
Выделите в эскизе две точки (вершины) и линию. Выделенные точки и линия станут тёмно-зелёными.
Кликните на иконке SymmetricalConstraint 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.
Note: Before Version 0.19 (see fix [1]), 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.
See the tracker issue #4144, and forum thread.
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.
- General: Create sketch, Edit sketch, Map sketch to face, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch, Leave sketch, View sketch, View section, Toggle grid, Toggle snap, Configure rendering order, Stop operation
- Sketcher geometries: Point, Line, Arc, Arc by 3 points, Circle, Circle by 3 points, Ellipse, Ellipse by 3 points, Arc of ellipse, Arc of hyperbola, Arc of parabola, B-spline by control points, Periodic B-spline by control points, B-spline by knots, Periodic B-spline by knots, Polyline, Rectangle, Centered rectangle, Rounded rectangle, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Regular polygon, Slot, Fillet, Corner-preserving fillet, Trim, Extend, Split, External geometry, Carbon copy, Toggle construction geometry
- Sketcher constraints:
- 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)
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint
- Sketcher tools: Select unconstrained DoF, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide internal geometry, Select origin, Select horizontal axis, Select vertical axis, Symmetry, Clone, Copy, Move, Rectangular array, Remove axes alignment, Delete all geometry, Delete all constraints
- Sketcher B-spline tools: Show/hide B-spline degree, Show/hide B-spline control polygon, Show/hide B-spline curvature comb, Show/hide B-spline knot multiplicity, Show/hide B-spline control point weight, Convert geometry to B-spline, Increase B-spline degree, Decrease B-spline degree, Increase knot multiplicity, Decrease knot multiplicity, Insert knot, Join curves
- Sketcher virtual space: Switch virtual space
- Additional: Sketcher Dialog, Preferences, Sketcher scripting
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