5.2 Context snapping
When context snapping
is enabled, certain features of the
objects of your current drawing become magnetic. There are three
buttons to enable three different features of your objects: vertices,
the boundary, and intersection points.
When the mouse is too far away from the nearest interesting feature,
the mouse position will not be "snapped". The snapping distance can
be changed by setting Snapping distance value in the preference
dialog. If you use a high setting, you will need to toggle snapping
on and off during drawing. Some people prefer to set snapping on once
and for all, and to set the snap distance to a very small value like 3
The features that you can make "magnetic" are the following:
- are vertices of polygonal objects, control points of
multiplicity three of splines, centers of circles and ellipses,
centers and end points of circular arcs, and mark positions.
- are the object boundaries of polygonal objects,
splines and splinegons, circles and ellipses, and circular arcs.
- are the intersection points between the
boundaries of path objects.