Snap Modes > Center (Extra Menu)

The snap modes determine which type of point should be used as a snapping reference. There are various snap modes, some of which can be used together. The snap modes take effect when snapping is active. Snapping can be turned on or off using the F6 Key or the first button in the Panel. It can be temporarily (de)activated during point entry using the SHIFT key.

This snap mode uses center points as snapping references. These can be the midpoints of lines or the center points of circles, circle parts, ellipses and ellipse parts. If snapping and this snap modes are active, instead of entering a point a (part) object is identified whose center point is then worked out.

Any part object in an existing object can be identified as a reference object. This can be the side of a rectangle, the arc of an ellipse segment or a circle arc within a surface. A Construction Aid endless line can not be identified as it has no "middle".

After selecting the (part) object, its center or mid point is calculated. This point is then used like a point entered by hand (see graphic).

Optionally, this snap mode can be turned on or off by left-clicking the button in the panel shown above. In addition the button always shows the snap mode's current status.