Designer_NURBS_tag Struct Reference
[Designer]

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Detailed Description

NURBS patch.

This structure represents a NURBS patch. Note the w values are *premultiplied* with the x, y and z values. eg. Cubic NURBS mimimum requirement 4 control points => num = 4 order = 4 => 8 Index: knots [0 - 3] points [0 - 3][0 - 3] in the terms of Watt and Watt spline spec. is n=3 k=4 => knots = 3+4+1 Sum i=0,n (points = n+1) In knot vector first parameter repeated "k" times [0 0 0 0 1 1 1 1] [0..numV-1][0..numU-1]

Definition at line 153 of file STRUCT.H.

Data Fields
struct Designer_NURBS_tag *	next
struct Designer_NURBS_tag *	last
struct Designer_SKELETON_tag *	sp
long	numU
long	numV
	Number of Points in the U and V directions.
long	orderU
long	orderV
	Order of the surface in U and V (must be >= 2, < MAXORDER).
double *	kvU
double *	kvV
	Knot vectors, indexed as [0..numU+orderU-1] and [0..numV+orderV-1].
vector4 **	points
	Control points, indexed as points.
BOOL	selected
	TRUE if selected.
NurbsProperties	properties
BOOL	strV0
BOOL	strVn
	Edge straightness flags for subdivision.
BOOL	strU0
BOOL	strUn
BOOL	flatV
BOOL	flatU
	Surface flatness flags for subdivision.
NurbsSurfSample	c00
NurbsSurfSample	c0n
NurbsSurfSample	cn0
NurbsSurfSample	cnn
	Corner data structures for subdivision.

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Field Documentation

struct Designer_NURBS_tag* next [read]

Definition at line 154 of file STRUCT.H.

struct Designer_NURBS_tag * last [read]

Definition at line 154 of file STRUCT.H.

struct Designer_SKELETON_tag* sp [read]

Definition at line 155 of file STRUCT.H.

long numU

Definition at line 156 of file STRUCT.H.

long numV

Number of Points in the U and V directions.

Definition at line 156 of file STRUCT.H.

long orderU

Definition at line 157 of file STRUCT.H.

long orderV

Order of the surface in U and V (must be >= 2, < MAXORDER).

Definition at line 157 of file STRUCT.H.

double* kvU

Definition at line 158 of file STRUCT.H.

double * kvV

Knot vectors, indexed as [0..numU+orderU-1] and [0..numV+orderV-1].

Definition at line 158 of file STRUCT.H.

vector4** points

Control points, indexed as points.

Definition at line 159 of file STRUCT.H.

BOOL selected

TRUE if selected.

Definition at line 160 of file STRUCT.H.

NurbsProperties properties

Definition at line 161 of file STRUCT.H.

BOOL strV0

Definition at line 163 of file STRUCT.H.

BOOL strVn

Edge straightness flags for subdivision.

Definition at line 163 of file STRUCT.H.

BOOL strU0

Definition at line 163 of file STRUCT.H.

BOOL strUn

Definition at line 163 of file STRUCT.H.

BOOL flatV

Definition at line 165 of file STRUCT.H.

BOOL flatU

Surface flatness flags for subdivision.

Definition at line 165 of file STRUCT.H.

NurbsSurfSample c00

Definition at line 166 of file STRUCT.H.

NurbsSurfSample c0n

Definition at line 166 of file STRUCT.H.

NurbsSurfSample cn0

Definition at line 166 of file STRUCT.H.

NurbsSurfSample cnn

Corner data structures for subdivision.

Definition at line 166 of file STRUCT.H.

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The documentation for this struct was generated from the following file:

• c:/openfx/design/STRUCT.H