UnityEngine.Plane.SetNormalAndPosition(UnityEngine.Vector3, UnityEngine.Vector3)

[ContextMenu("Generate")]
    public void Generate()
    {
        var wythoff = new WythoffPoly(PolyType, PrismP, PrismQ);
        wythoff.BuildFaces();
        poly = new ConwayPoly(wythoff);
        if (ApplyOp)
        {
            var o1 = new OpParams {valueA = op1Amount1, valueB = op1Amount2, facesel = op1Facesel};
            poly = poly.ApplyOp(op1, o1);
        }

        if (Canonicalize)
        {
            poly = poly.Canonicalize(0.01, 0.01);
        }
        
        poly = poly.Transform(Position, Rotation, Scale);

        var pos = SlicePosition;
        if (animateSlice > 0)
        {
            pos.y = .1f + transform.position.y + ((Time.time % 2f) * animateSlice);
        }

        var rot = Quaternion.Euler(SliceRotation) * Vector3.up;
        var slicePlane = new Plane(rot, pos);
        var result = poly.SliceByPlane(slicePlane, Cap, includeTop, includeBottom);
        poly = result.bottom;   
        var slicePoint = slicePlane.normal * (-slicePlane.distance + SegmentHeight);
        slicePlane.SetNormalAndPosition(slicePlane.normal, slicePoint);
        var (top, segment, _) = result.top.SliceByPlane(slicePlane, Cap, includeTop, includeBottom);
        segment = segment.Transform(SegmentTransform);
        poly.Append(top);
        poly.Append(segment);
        
        if (Weld)
        {
            poly = poly.Weld(0.0001f);
        }
        
        if (ApplyOp)
        {
            var o2 = new OpParams {valueA = op2Amount1, valueB = op2Amount2, facesel = op2Facesel};
            poly = poly.ApplyOp(op2, o2);
        }

        var mesh = PolyMeshBuilder.BuildMeshFromConwayPoly(poly, false, null, ColorMethod);
        GetComponent<MeshFilter>().mesh = mesh;
    }