Rhino3d symmetry

Is there any way to mirror what I do (if I move a control point for instance) continously, automatically?

If I want a proa symmetrical shape, from cross-sections for instance, and want to change it, then I change a cross-section and then I have to delete the one on the other side of the mirror plane and mirror the one I changed so that both sides are the same. Then to re-loft the surface. Time-consuming!

If there was a way to rule that a surface or curve will end in a particular direction, then it would be possible tomake only half the hull and know that when I mirror it, it will fit with no kink.

I also want to know how to insert control points to a curve, please?

 

Good thinking. I think steve Baer will be able to give the answer that it is or will be possible in rhino.

to insert control point on a curve ; go to edit>control point> insert edit point.

 

Assuming you are using V4, practice with the "Record History" command. You may find it will do what you are asking.

 

History should definitely help you with this type of modeling. You may also want to see the Symmetry video on this web page
http://www.rhino3d.com/4/editing.htm

Thanks,
-Steve
Steve Baer
Robert McNeel & Associates

 

wow, amazing stuff. Seems like there is a boatload of new functions.

this is too much fun.. thanks for the help.

 

Is there a way to select surface control points by row or column?

 

At first ; select a point in the desired row or colum;
to select control points by row:
go to Control Point>select control points> Select U

to select by column:
go to Control point>select control points>Select V

 

Ive now got a proa that is mostly ok at one end, but the other end is all kinds of wobbly. But when I cut off the wobbly end, its control points stays there, is there any way to get rid of them? because I'd like to mirror and join the good end. Am trying "symmetry" but it won't use this surface edge. Am trying T-splines too.

 

you better upload the rhino file here;and let us try.