Sketcher ConstrainDistanceX

From FreeCAD Documentation
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Sketcher ConstrainDistanceX

Menu location
Sketch → Sketcher constraints → Constrain horizontal distance
Workbenches
Sketcher
Default shortcut
L
Introduced in version
-
See also
Sketcher Constrain Length, Sketcher Constrain Vertical Distance

Description

The Sketcher ConstrainDistanceX tool fixes the horizontal distance between two points or the endpoints of a line. If only one point is pre-selected, the distance is set to the sketch origin.

Usage

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 horizontal distance button.
    • Select the Sketch → Sketcher constraints → Constrain horizontal distance option from the menu.
    • introduced in version 0.22: Right-click in the 3D view and select the Dimension → Constrain horizontal distance option from the context menu.
    • Use the keyboard shortcut: L.
  3. The cursor changes to a white cross with the tool icon.
  4. Do one of the following:
    • Select two points (one of which can be the origin).
    • Select a single line.
  5. If the Ask for value after creating a dimensional constraint option is selected (default) in the Sketcher Preferences:
    1. A pop up dialog opens to edit the constraint value.
    2. Press OK to confirm.
  6. A constraint is added.
  7. Optionally keep creating constraints.
  8. To finish, right-click or press Esc, or start another geometry or constraint creation tool.

Once-only mode

  1. Do one of the following:
    • Select one or two points.
    • Select a single line.
  2. Invoke the tool as explained above.
  3. Confirm the constraint as explained above.
  4. A constraint is added.

Scripting

Distance from origin:

Sketch.addConstraint(Sketcher.Constraint('DistanceX', Edge, PointOfEdge, -1, 1, App.Units.Quantity('123.0 mm')))

Distance between two vertices:

Sketch.addConstraint(Sketcher.Constraint('DistanceX', Edge1, PointOfEdge1, Edge2, PointOfEdge2, App.Units.Quantity('123.0 mm')))

Horizontal span of line (the GUI allows selecting the edge itself, but it is just a shorthand for using the two extremities of the same line):

Sketch.addConstraint(Sketcher.Constraint('DistanceX', Line, 1, Line, 2, App.Units.Quantity('123.0 mm')))

The Sketcher scripting page explains the values which can be used for Edge, Edge1, Edge2, PointOfEdge, PointOfEdge1, PointOfEdge2 and Line, and contains further examples on how to create constraints from Python scripts.