_ExtendSrf Failed to extend

[0904]

Hi,

is there a difference between commands _Curve and _InterpCrv?
why after creating _CurveBoolean and _PlanarSrf the _ExtendSrf command fails.

(see example below with curves made by _InterpCurve)

[davidcockey]

@0904

is there a difference between commands _Curve and _InterpCrv?

When using Curve the user selects the control point locations directly, and Rhino creates the curve using those control point locations.
When using InterpCrv the user selects the locations of points the curve will pass through, and Rhino determines the control point locations so that the curve passes through the user selected points.
There is nothing in the curves which designate if they were created using Curve or InterpCrv.

@0904

why after creating _CurveBoolean and _PlanarSrf the _ExtendSrf command fails.

Without a .3dm file with the curves and surfaces it is very difficult to impossible to determine why ExtendSrf does not work the second surface.

[Gijs (Gijs de Zwart)]

Ho @0904 van you run _SystemInfo and post back the results?
There have been some issues with ExtendSrf that should be solved in the latest 8.13 SRC

[0904]

Hi @Gijs,

with this Srf however I encounter problems:

forum-extendsrf-3.3dm (42.6 KB)

[Gijs (Gijs de Zwart)]

I don’t see anything wrong with how those behave. At some point the extended curves are going to ‘intersect’ the extension and then it will simply stop extending, e.g.: