ExtrudeCrvTapered in V9 WIP (9.0.25133.12305, 2025-05-13) fails when it should not.
Version 8 SR20 (8.20.25133.14001, 2025-05-13) works properly
Input is a simple, smooth curve. ExtudeCrvTapered beyond a certain height result has gaps. The taper is outward so that the radius of the surface increases with height.
ExtendCrvTaper the curve a height of 10 which does not have gaps. ExtendSrf a large amount and the result is a good surface with the specified surface.
ExtrudeSrfTapared FailBug DC01.3dm (141.0 KB)
Command line history:
Command: ExtrudeCrvTapered
Select curves to Extrude
Select curves to Extrude. Press Enter when done
Extrusion distance <-10> ( Direction DraftAngle=45 Solid=No Corners=Sharp DeleteInput=No FlipAngle ToBoundary SetBasePoint SplitAtTangents=No ): 40
Creating meshes… Press Esc to cancel
Command: ExtrudeCrvTapered
Select curves to Extrude
Select curves to Extrude. Press Enter when done
Extrusion distance <40> ( Direction DraftAngle=45 Solid=No Corners=Sharp DeleteInput=No FlipAngle ToBoundary SetBasePoint SplitAtTangents=No ): 10
Creating meshes… Press Esc to cancel
Command: ExtrudeCrvTapered
Select curves to Extrude
Select curves to Extrude. Press Enter when done
Extrusion distance <10> ( Direction DraftAngle=45 Solid=No Corners=Sharp DeleteInput=No FlipAngle ToBoundary SetBasePoint SplitAtTangents=No )
Creating meshes… Press Esc to cancel
Command: ExtendSrf
Select an edge to extend ( Type=Smooth Merge=Yes )
Extension point <50.000> ( SetBasePoint Type=Smooth Merge=Yes )
Creating meshes… Press Esc to cancel