TechDraw RadiusDimension: Difference between revisions

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# Select a circle or circular arc in the drawing. (Note some arcs which appear to be circular are actually ellipses or BSplines. You cannot make a radius dimension in these cases)
# Select a circle or circular arc in the drawing. (Note some arcs which appear to be circular are actually ellipses or BSplines. You cannot make a radius dimension in these cases)
# Press the {{Button|[[Image:TechDraw_RadiusDimension.svg|16px]] [[TechDraw_RadiusDimension|Radius Dimension]]}} button
# Press the {{Button|[[Image:TechDraw_RadiusDimension.svg|16px]] [[TechDraw_RadiusDimension|Insert Radius Dimension]]}} button
# A dimension will be added to the View. The dimension may be dragged to the desired position.
# A dimension will be added to the View. The dimension may be dragged to the desired position.
# If needed, add tolerances as described on [[TechDraw_Geometric_dimensioning_and_tolerancing#Tolerances|this page]].
# If needed, add tolerances as described on [[TechDraw_Geometric_dimensioning_and_tolerancing#Tolerances|this page]].

Revision as of 10:52, 24 July 2023

TechDraw RadiusDimension

Menu location
TechDraw → Dimensions → Insert Radius Dimension
Workbenches
TechDraw
Default shortcut
None
Introduced in version
-
See also
TechDraw DiameterDimension

Description

The TechDraw RadiusDimension tool adds a radius dimension to a View. The dimension may be applied to any Edge in the drawing which is a circle or circular arc. The distance will initially be the projected distance (ie as shown on the drawing), but this may be changed to the actual 3D distance using the TechDraw LinkDimension tool.

Measuring a circle, indicating the radius

Usage

  1. Select a circle or circular arc in the drawing. (Note some arcs which appear to be circular are actually ellipses or BSplines. You cannot make a radius dimension in these cases)
  2. Press the Insert Radius Dimension button
  3. A dimension will be added to the View. The dimension may be dragged to the desired position.
  4. If needed, add tolerances as described on this page.

To change the properties of a dimension object either double-click it in the drawing or in the Tree view. This will open the dimension dialog.

Limitations

Dimension objects are vulnerable to the "topological naming problem". See TechDraw LengthDimension for more information.

Properties

See TechDraw LengthDimension.

Scripting

See also: Autogenerated API documentation and FreeCAD Scripting Basics.

The Radius Dimension tool can be used in macros and from the Python console by using the following functions:

dim1 = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewDimension','Dimension')
dim1.Type = "Radius"
dim1.References2D=[(view1, 'Edge1')]
rc = page.addView(dim1)