Sketcher ConstrainSymmetric/ru

Ограничение эквивалентностью

Ограничение перемещения

Верстак "Sketcher"

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:
   • introduced in version 1.0: Right-click in the 3D view and select the Constrain symmetric option from the context menu.
3. A constraint is added.

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.

Ограничение эквивалентностью

Ограничение перемещения

Верстак "Sketcher"

Sketcher

• 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

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• 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

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• 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

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• 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

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• 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

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• Sketcher virtual space: Switch virtual space

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• Additional: Sketcher Dialog, Preferences, Sketcher scripting

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