Sketcher ConstrainRadius: Difference between revisions

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(Added documentation for the Constrain radius item davec49)
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<languages/>
{{GuiCommand|Name=Constraint Radius|Workbenches=[[Sketcher Workbench|Sketcher]], [[PartDesign Module|PartDesign_Workbench]]|MenuLocation=Sketcher → Constrain radius|SeeAlso=[[Constraint distance]], [[Constraint horizontal]], [[Constraint vertical]]}}
<translate>
<!--T:8-->
{{Docnav
|[[Sketcher_ConstrainDistance|Distance]]
|[[Sketcher_ConstrainDiameter|Constraint Diameter]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainDistance.svg
|IconR=Sketcher_ConstrainDiameter.svg
|IconC=Workbench_Sketcher.svg
}}


<!--T:1-->
====Description====
{{GuiCommand
|Name=Sketcher ConstrainRadius
|MenuLocation=Sketch → Sketcher constraints → Constrain radius
|Workbenches=[[Sketcher_Workbench|Sketcher]]
|SeeAlso=[[Sketcher_ConstrainDistance|Sketcher Constrain distance]], [[Sketcher_ConstrainDistanceX|Sketcher Constrain horizontal distance]], [[Sketcher_ConstrainDistanceY|Sketcher Constrain vertical distance]]
}}


==Description== <!--T:2-->
This constraint constrains the value of the radius of a circle or arc to have a specific value. Only one arc or circle can be constrained at a time.


<!--T:6-->
This constraint constrains the value of the radius of a circle or arc to have a specific value. If more than one circle or arc is selected before launching the command :
* If the constrain is applied in 'Reference' mode, a new reference constrain is added to each object separately according above rules
* If the constrain is applied in 'Normal' (driving) mode, following rules are applied
** A reference constrain is applied separately on each object which is an external geometry
** {{Button|[[File:Sketcher_ConstrainEqual.svg|16px]] [[Sketcher_ConstrainEqual|Equal constrains]]}} are applied sequentially between all real/construction geometry objects and a dimensional constrain is applied to the first selected object according above rules
NB : B-spline poles can't be mixed with other object type in the selection


</translate>
====Operation====
[[File:Sketcher ConstrainRadius example.png]]
<translate>


==Usage== <!--T:3-->
[[File:ConstrainRadius1.png|256px]]


<!--T:4-->
Select an arc or circle in the sketch by clicking on is ( turns dark green to indicate selection).
# Pick one or more circles or arcs.
# Press the {{Button|[[File:Sketcher_ConstrainRadius.svg|16px]] [[Sketcher_ConstrainRadius|Constrain radius]]}} button.
# A pop up dialog opens to edit or confirm the value. Press {{Button|OK}} to validate. In case multiple circles/arcs were selected, all constraints will adopt this value. Edit their separate values by double-clicking on the dimension label in the 3D view; or in the Constraints list, double-click on the constraint or right-click and select '''Change value'''.
# Optionally the dimension label and line can be moved and rotated in the 3D view by clicking on the value and dragging while keeping the left mouse button pressed.


<!--T:5-->
[[File:ConstrainRadius2.png|256px]]
'''Note:''' the constraint tool can also be started with no prior selection. By default the command will be in continue mode to create new constraints; press the right mouse button or {{KEY|Esc}} once to quit the command.


== Scripting == <!--T:12-->
Apply the constraint by clicking on the Constrain Radius icon [[File:Constraint_Radius.png|16px]] in the Sketcher toolbar or selecting the Constrain radius menu item from the Sketcher constraints sub menu of the the Sketcher (or Part Design) menu item (depending upon which workbench is selected).


</translate>
[[File:ConstrainRadius3.png|256px]]
{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Radius', ArcOrCircle, App.Units.Quantity('123.0 mm')))}}
<translate>


<!--T:13-->
The radius is constrained to have its current value when the constraint is applied.
The [[Sketcher_scripting|Sketcher scripting]] page explains the values which can be used for {{incode|ArcOrCircle}}, and contains further examples on how to create constraints from Python scripts.


To change the constraint value either double click on the constraint in the 3D display (turning red indicates the constraint is currently selected) or by double clicking on the constraint in the Constraints panel of the Tasks tab of the Combo View. This will bring up a pop-up window.


<!--T:9-->
[[File:ConstrainRadius4.png|256px]]
{{Docnav
|[[Sketcher_ConstrainDistance|Distance]]
|[[Sketcher_ConstrainDiameter|Constraint Diameter]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainDistance.svg
|IconR=Sketcher_ConstrainDiameter.svg
|IconC=Workbench_Sketcher.svg
}}


</translate>

{{Sketcher Tools navi{{#translation:}}}}
Enter the dsired value for the radius into the pop-up window and click OK to set the value of the constraint.
{{Userdocnavi{{#translation:}}}}

{{clear}}
[[File:ConstrainRadius5.png|256px]]

The constraint value is set to the value entered in the pop-up window.

{{languages | {{es|Sketcher_Arc/es}} }}
--[[User:Jdurston|Jdurston]] 00:34, 16 November 2011 (UTC)

Revision as of 17:58, 19 June 2021

Sketcher ConstrainRadius

Menu location
Sketch → Sketcher constraints → Constrain radius
Workbenches
Sketcher
Default shortcut
None
Introduced in version
-
See also
Sketcher Constrain distance, Sketcher Constrain horizontal distance, Sketcher Constrain vertical distance

Description

This constraint constrains the value of the radius of a circle or arc to have a specific value. If more than one circle or arc is selected before launching the command :

  • If the constrain is applied in 'Reference' mode, a new reference constrain is added to each object separately according above rules
  • If the constrain is applied in 'Normal' (driving) mode, following rules are applied
    • A reference constrain is applied separately on each object which is an external geometry
    • Equal constrains are applied sequentially between all real/construction geometry objects and a dimensional constrain is applied to the first selected object according above rules

NB : B-spline poles can't be mixed with other object type in the selection

Usage

  1. Pick one or more circles or arcs.
  2. Press the Constrain radius button.
  3. A pop up dialog opens to edit or confirm the value. Press OK to validate. In case multiple circles/arcs were selected, all constraints will adopt this value. Edit their separate values by double-clicking on the dimension label in the 3D view; or in the Constraints list, double-click on the constraint or right-click and select Change value.
  4. Optionally the dimension label and line can be moved and rotated in the 3D view by clicking on the value and dragging while keeping the left mouse button pressed.

Note: the constraint tool can also be started with no prior selection. By default the command will be in continue mode to create new constraints; press the right mouse button or Esc once to quit the command.

Scripting

Sketch.addConstraint(Sketcher.Constraint('Radius', ArcOrCircle, App.Units.Quantity('123.0 mm')))

The Sketcher scripting page explains the values which can be used for ArcOrCircle, and contains further examples on how to create constraints from Python scripts.