PK_BCURVE_sweep

PK_ERROR_code_t   PK_BCURVE_sweep
(
--- received arguments ---
PK_BCURVE_t       bcurve,      --- bcurve
PK_VECTOR_t       path,        --- translation vector

--- returned arguments ---
PK_BSURF_t *const bsurf        --- resulting bsurf
)


This function sweeps a 'bcurve' into a 'bsurf'.


Specific Errors:
    PK_ERROR_null_direction        zero length path vector given


The 'bcurve' is moved along the 'path' vector sweeping out a 'bsurf'.



Returned surface 'bsurf':
. The given 'bcurve' lies along the v = 0 parameter line of the surface.
. The surface has the same dimension as the curve.
. The u order of the surface is the order of the curve.
. The v order of the surface is 2.
. The surface normal is in the direction of the cross product of the 'bcurve'
  tangent and the 'path' vector.

In general this procedure may construct a self-intersecting surface.