Non-Uniform Rational B-Spline

Collaboration diagram for Non-Uniform Rational B-Spline:

Files
file	bspline.h

Data Structures
struct	rt_nurb_internal

Macros
#define	RT_NURB_CK_MAGIC(_p)   BU_CKMAG(_p, RT_NURB_INTERNAL_MAGIC, "rt_nurb_internal");
#define	RT_NURB_GET_CONTROL_POINT(_s, _u, _v)

Functions
int	rt_nurb_to_brep (struct rt_db_internal *ip)

Detailed Description

Macro Definition Documentation

RT_NURB_CK_MAGIC

#define RT_NURB_CK_MAGIC

(

_p

)

BU_CKMAG(_p, RT_NURB_INTERNAL_MAGIC, "rt_nurb_internal");

Definition at line 289 of file geom.h.

RT_NURB_GET_CONTROL_POINT

#define RT_NURB_GET_CONTROL_POINT	(		_s,
			_u,
			_v
	)

Value:

                                                     ((_s)->ctl_points[ \
                                                     ((_v)*(_s)->s_size[0]+(_u))*RT_NURB_EXTRACT_COORDS((_s)->pt_type)])

Definition at line 290 of file geom.h.

Function Documentation

rt_nurb_to_brep()

int rt_nurb_to_brep ( struct rt_db_internal *  ip )

extern

Convert a BSPLINE (ID_BSPLINE) rt_db_internal to a BREP (ID_BREP) rt_db_internal in-place.

The caller must already hold a loaded ID_BSPLINE internal (e.g. from rt_db_get_internal()). On success the internal is freed and replaced with an equivalent ID_BREP internal; the caller owns the result and must eventually call rt_db_free_internal().

Returns 0 on success, -1 on failure (the original internal is unchanged on failure).