Sketcher ConstrainPointOnObject

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Sketcher ConstrainPointOnObject.svg Sketcher ConstrainPointOnObject

Menu location
Sketch → Sketcher constraints → Constrain point onto object
Default shortcut
Introduced in version
See also
Constrain Coincident


Affixes a point onto another object such as a line, arc, or sketch axis.

How to Use

  1. Select the point you want to affix onto a line/arc/etc. (Once selected the point become green).
  2. Select the line you want to be affixed onto the point you have just selected (Once selected the line become green).
  3. Press the Sketcher ConstrainPointOnObject.png Constrain point unto object button.

Note : The order you select the line and point does not matter. The point will always move to line. The line remains fixed.


The constraint can be created from macros and from the python console by using the following command:


where :

  • Sketch is a sketch object
  • LineMoving is the number that designates the line, which contains the point that has to be moved onto the LineFixed (The line which is fixed)
  • PointOfLineMoving is the number of the vertex of line LineMoving, that has to be moved onto the LineFixed
  • LinedFixed is the number of the line to be affixed onto the point PointOfLineMoving

How to identify the number that designates lines and points ? Please refer to the scripting part of Sketcher ConstrainCoincident.