Why Points are being ignored by History?

Rhino Rhino for Mac
1

Does anybody knows why Points do not work with History?

for example:

Draw some points.
[with history recording and updating on] draw a closed Polyline through the points.
[again with history on] do a planerSrf from the Polyline.
move one of the points… the curve and the Srf do not update [on my machine]
[moving just the Crv update the Srf with no broken history warning ]
Why…?
is this intended? Am I missing some new behaivor ? Is this a bug on Mac only or…?

thanks a lot
Akash

2

Hi Akash - if you are using Polyline and the Point osnap to draw the polyline, the point objects have no connection to the result - they just mark locations in space. The CrvThroughPt (Degree1 to get a polyline like object) command does take point objects as input and should update with History.

-Pascal

1 Like
3

Thanks a lot @pascal
Good then, I’ll use CrvThroughPt.

It feels strange/confusing that lines don’t History to points… But CrvThroughPt solves it for me now, so great.

would you care to explain the reason for this? [understanding why, is better than remembering]

thanks

4

Hi Akash - - snapping to points only gives the Rhino command locations, not objects. For History to work, there needs to be input objects that can be edited. CurveThroughPt takes as input Rhino point objects not snaps to their locations. Does that make sense?

-Pascal

5

Yes, Once one knows the explanation… and I kind of assumed that.
But it just feels [from a user point of view ] wrong.
I would expect [was expecting ] that snaping to point does link the points to history.

As there are so many things to wish for regarding Users and History relationships… I’ll try to get back to this “wish” when WIP9 discussions moves into gear.

thanks a lot.