Wish: Double-ended Extend

Rhino
,
1

A long time ago, I used PowerNURBS for 3DS MAX, and it was a wonderful plugin, that still exists today.

I remember one really useful feature that would permit double-ended extension of an arbitrary curve by an adjustable/slider-led percentage or numeric length .

Is such a feature possible? Has this been done already?

I thought it may be useful given that we have to use the pipe trick so often to make fillets and blends work. I often forget to extend another end to a curve, and end up with a short trim, or a surface with a triangular kink.

2

Hi David - in case it helps, there are a few commands in this plug-in hack, some of them work and some are actually useful - ExtendFromMid seems to work OK.

CurveAndArcUtilities.rhp (86.5 KB)

Save, then “unblock” the rhp file in Windows, then drag and drop onto Rhino. Here is the full list of doo-dads that it has:

3PtArcFromPoints
3PtArcFromPolyline
ArcFitToCurve
ArcFitToPoints
ArcFitToPolyline
DimCurveAngle
ExtendFromMid
RadiusFrom3Pts
SelArc
SelArcByRadius
SelArcRange
SelCircle
SelCircleByRadius
SetArcDegrees
SetArcRadians
SetCurveLength
SubCrvFromMid

-Pascal

3 Likes
3

Wicked! Thanks.

4

Hi David - I need to change the prompt to indicate it but you can type in a number as a distance to extend as well as drag the end out.

-Pascal