Sketcher ConstrainLock: Difference between revisions
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{{GuiCommand |
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{{GuiCommand|Name=Sketcher ConstrainLock|Workbenches=[[Sketcher Workbench|Sketcher]], [[PartDesign Workbench|PartDesign]]|MenuLocation=Sketch → Sketcher constraints → Constrain lock|SeeAlso=[[Sketcher ConstrainCoincident|Constraint Coincident]]}} |
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|Name=Sketcher ConstrainLock |
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|Workbenches=[[Sketcher Workbench|Sketcher]] |
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|MenuLocation=Sketch → Sketcher constraints → Constrain lock |
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|SeeAlso=[[Sketcher ConstrainBlock|Constrain Block]] |
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}} |
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Create a lock constraint on the selected item |
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==Description== <!--T:1--> |
==Description== <!--T:1--> |
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This constraint tool attempts to <em>fully constrain</em> any selected item. |
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'''Constraint Lock''' applies [[File:Constraint_HorizontalDistance.png|24px]] [[Sketcher_ConstrainDistanceX|Horizontal distance]] and [[File:Constraint_VerticalDistance.png|24px]] [[Sketcher_ConstrainDistanceY|Vertical distance]] constraints to selected vertices (points) in the sketch. If a single vertex is selected, the horizontal and vertical distance constraints will refer to the sketch origin point. If two or more points are selected, horizontal and vertical distance constraints will be added for each pair of points. There is no automatic prompt to edit the constraints' values, they must be edited manually. |
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NOTE: It is advised that this tool be exclusively used on points for the time-being: |
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Owing to the fact that FreeCAD is still under development - this tool exhibits strange behaviour when it attempts to 'lock' anything other than a point. For example (as of V0.12 R4802), when locking a circle by its circumferential line rather than its centre <em>point</em>, a horizontal constraint and a vertical constraint appear in the constraints dialogue, but they are both of value zero and do not appear in the graphics window. |
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== |
==How to use== <!--T:3--> |
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<ol> |
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# Select one or more vertices (points) in the sketch. |
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<li>Firstly it is necessary to highlight an item you wish to constrain. For reasons alluded-to above it is wise to only highlight a <em>point</em>.<br /> |
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# Press the {{KEY|[[File:Sketcher ConstrainLock.png|24px]] '''Constrain Lock'''}} button. |
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[[File:LockConstraint1.png|256px]]</li> |
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# To edit the constraints values, double-click on a constraint value in the 3D view, or double-click on the constraint or right-click and select '''Edit value''' in the Constraint list in the Tasks tab. |
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<li> |
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Highlighting of a drawing item is achieved by moving the mouse over the item and clicking the left-mouse-button. |
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'''Note:''' the constraint tool can also be started with no prior selection, but it will then only work on a single vertex, and reference the constraints to the sketch origin point. |
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A highlighted item will change colour to green.<br /> |
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[[File:LockConstraint2.png|256px]]</li> |
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<li> |
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Once an item is highlighted, left-clicking on the <em>lock</em> constraint serves to lock the highlighted item in-place. This usually manifests as two constraints: a horizontal distance constraint from the drawing axis origin, and a vertical constraint from the drawing axis origin. These are set by default to the current co-ordinates of the point.<br /> |
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[[File:LockConstraint3.png|256px]]</li> |
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<li> |
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The vertical and horizontal constraints forming the lock can be edited by double clicking on the appropriate constraint to be edited either in the drawing itself or in the Constraint tab of the Combo View pane. This will open a dialog box to edit the constraint. Clicking on the horizontal constraint component produces:<br /> |
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[[File:LockConstraint4.png|256px]].</li> |
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<li>Enter the desired value into the dialog box and click OK.<br /> |
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[[File:LockConstraint5.png|256px]]</li> |
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<li>The new value of the constraint is applied to the drawing.<br /> |
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[[File:LockConstraint6.png|256px]]</li> |
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<li>The vertical constraint may be similarly edited to constrain the point to the desired location.<br /> |
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[[File:LockConstraint7.png|256px]]</li></ol> |
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Revision as of 05:10, 1 October 2018
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| Menu location |
|---|
| Sketch → Sketcher constraints → Constrain lock |
| Workbenches |
| Sketcher |
| Default shortcut |
| None |
| Introduced in version |
| - |
| See also |
| Constrain Block |
Description
Constraint Lock applies 
Horizontal distance and 
Vertical distance constraints to selected vertices (points) in the sketch. If a single vertex is selected, the horizontal and vertical distance constraints will refer to the sketch origin point. If two or more points are selected, horizontal and vertical distance constraints will be added for each pair of points. There is no automatic prompt to edit the constraints' values, they must be edited manually.
How to use
- Select one or more vertices (points) in the sketch.
- Press the
Constrain Lock button. - To edit the constraints values, double-click on a constraint value in the 3D view, or double-click on the constraint or right-click and select Edit value in the Constraint list in the Tasks tab.
Note: the constraint tool can also be started with no prior selection, but it will then only work on a single vertex, and reference the constraints to the sketch origin point.