Fillet Surface
A fillet surface is found where a round or a fillet is placed on a curved edge, or on an edge with non-constant arc radii. On a straight edge, a cylinder would be used to represent the fillet.
Data Format:
pnt_spline P(v) spline running along the u = 0 boundary
ctr_spline C(v) spline along the centers of the
fillet arcs
tan_spline T(v) spline of unit tangents to the
axis of the fillet arcs
ctr_spline C(v) spline along the centers of the
fillet arcs
tan_spline T(v) spline of unit tangents to the
axis of the fillet arcs
Parameterization:
R(v) = P(v) - C(v)
(x,y,z) = C(v) + R(v) * cos(u) + T(v) X R(v) *
sin(u)
(x,y,z) = C(v) + R(v) * cos(u) + T(v) X R(v) *
sin(u)