How to use BrepFace.FilletSurfaceToCurve?

Rhino Developer
1

8.8.24170.13001, 2024-06-18

Why doesn’t

this _ScriptEditor C# script 
using System;
using System.Collections.Generic;
using System.Diagnostics;

using Rhino;
using Rhino.Geometry;

var doc = RhinoDoc.ActiveDoc;

var ps = new PlaneSurface(
    Rhino.Geometry.Plane.WorldXY,
    new Interval(0.0, 10.0),
    new Interval(0.0, 10.0));

var brep_In = ps.ToBrep();

doc.Objects.AddBrep(brep_In);

var curve = new LineCurve(
    new Point3d(0.0, 6.0, 0.25),
    new Point3d(10.0, 6.0, 0.75));

doc.Objects.AddCurve(curve);

var face = brep_In.Faces[0];
var out_fillets = new List<Brep>();
double[] fitResults;

face.FilletSurfaceToCurve(
    curve: curve,
    t: curve.Domain.Mid,
    u: face.Domain(0).Mid,
    v: face.Domain(1).Mid,
    radius: 2.0,
    alignToCurve: 1,
    railDegree: 3,
    arcDegree: 2,
    arcSliders: new List<double>(){ 0.0, 0.0 },
    numBezierSrfs: 1,
    tolerance: doc.ModelAbsoluteTolerance,
    out_fillets: new List<Brep>(),
    fitResults: out fitResults);

Console.WriteLine($"out_fillets.Count: {out_fillets.Count}");

if (out_fillets.Count > 1)
{
    foreach(var brep_Res in out_fillets)
        doc.Objects.AddBrep(brep_Res);
}

doc.Views.Redraw();

produce a fillet?

Also, setting alignToCurve to 0 crashes Rhino.

https://developer.rhino3d.com/api/rhinocommon/rhino.geometry.brepface/filletsurfacetocurve
https://developer.rhino3d.com/api/rhinocommon/rhino.geometry.curve/filletsurfacetocurve

Thank you

2

@Bill_Cook - is this something you can help with?