Sketcher ConstrainSymmetric: Difference between revisions

From FreeCAD Documentation
No edit summary
No edit summary
Line 31: Line 31:
See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].
See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].


# Do one of the following (optional if the tool will run in [[Sketcher_Workbench#Continue_modes|continue mode]]):
# Do one of the following (skip this step if the tool should run in [[Sketcher_Workbench#Continue_modes|continue mode]]):
#* Select two points and a symmetry point (in that order).
#* Select two points and a symmetry point (in that order).
#* Select two points and a symmetry line (in any order).
#* Select two points and a symmetry line (in any order).
Line 42: Line 42:
# If the tool runs in [[Sketcher_Workbench#Continue_modes|continue mode]]:
# If the tool runs in [[Sketcher_Workbench#Continue_modes|continue mode]]:
## The cursor changes to a white cross with the tool icon.
## The cursor changes to a white cross with the tool icon.
## Do one of the following:
## Optionally keep selecting elements:
##* Select two points and a symmetry point (in that order).
##* Select two points and a symmetry point (in that order).
##* Select two points and a symmetry line (idem).
##* Select two points and a symmetry line (idem).
##* Select a point, a symmetry line and another point (idem).
##* Select a point, a symmetry line and another point (idem).
##* Select a line and a symmetry point (idem).
##* Select a line and a symmetry point (idem).
## Optionally keep selecting elements.
## To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool.
## To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool.



Revision as of 20:17, 6 March 2024

This documentation is a work in progress. Please don't mark it as translatable since it will change in the next hours and days.

Sketcher ConstrainSymmetric

Menu location
Sketch → Sketcher constraints → Constrain symmetrical
Workbenches
Sketcher
Default shortcut
S
Introduced in version
-
See also
Sketcher Constraint Parallel

Description

The Sketcher ConstrainSymmetric tool constrains two points to be symmetrical around a line or around a third point.

Usage

See also: Drawing aids.

  1. Do one of the following (skip this step if the tool should run in continue mode):
    • 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. There are several ways to invoke the tool:
    • Press the Constrain symmetrical button.
    • Select the Sketch → Sketcher constraints → Constrain symmetrical option from the menu.
    • introduced in version 0.22: Right-click in the 3D view and select the Constrain → Constrain symmetrical option from the context menu.
    • Use the keyboard shortcut: S.
  3. If the tool runs in continue mode:
    1. The cursor changes to a white cross with the tool icon.
    2. 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).
    3. Optionally keep selecting elements.
    4. To finish, right-click or press Esc, or start another geometry or constraint creation tool.

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.