Hi,

I have been trying to apply a symmetry constraint and it is not behaving as indicated in the hover hint. This is not helpful.

"Create a symmetry constraint between two points with respect to a line or a third point (S)"

In the uploaded file I want to centre the arc between the two vertical lines. So, according to the hint, I select the two points then select the third point about which I want the symmetry: the centre of the arc. This does not work since it puts the arc to the right of the two points. So the "with respect to a line or a third point" is incorrect it is not the THIRD point which is used.

Now, I try a different order. LH vertex; arc centre; RH vertex. Now it does get the symmetry order as I intended by using the SECOND point as the point of reference , however, it drops the centre of the arc to be on the line between the two points. This is not what was marked on the box. The two points could be symmetrically placed either side of the arc without moving the arc centre. So why is it doing more that says it will do?

To apply symmetry as claimed it needs to draw a line between the two points find the perpendicular to the reference point and constrain the intersection to bisect the line between the two points. If the aim of this tool is to make all three points co-linear, then this should be clearly stated in the hint.

Should I open a bug for this?

BTW if some one can suggest a way to get the symmetry without moving the arc centre, it may be helpful.

thanks.