Bug: Extrude Curve Tapered - malfunction

[Joshua_Kennedy]

Thanks for typing this up. This is all really helpful.

@jim

In the Davor’s example file above, the problem I have is not just the slivers in the corner but the curved part is also garbage. I demonstrated in my file how I would avoid the garbage surfaces with hundreds of control points and dozens of fully multiple knots. That’s not the only way to work around that problem.

Yes, I understand what you mean. I created an issue here for this.

@jim

What I would like to see is a tool that is designed to make good quality surfaces for creating draft for molds and molded parts. One of the unique things that defines a good quality drafted surface is that if you project a line that is perpendicular to the input curve, that projected line should always coincide with a vertical Isocurve of the result drafted surface.

I’m going to add this a comment to RH-81764 since this is where I’m seeing this issue. If you have another example where this occurs outside a corner I’d like it.

@jim

In the examples you gave the B option is the correct result IMO. The A option does not have the requested draft angle on all surfaces and the flow lines of the surface are not oriented with the direction of draft, but giving users a choice would be great.

I opened the issue here. This is probably going to be substantial amount of work to get right.

I opened a master issue here to track all the subtasks to get ExtrudeCrvTapered working well. There’s a lot of devil in the details with this but it’s something I’m hoping to work on.