B Spline Surface3D

Class full path: NemAll_Python_Geometry.BSplineSurface3D

3D bsplinesrfc class for 3D (non uniform, rational) B-spline surface geometry

Attributes

Points: None property

Get the points property

:type: None

UClosed: None property

Get and set the closed property

:type: None

UDegree: None property

Get and set the degree property

:type: None

UKnots: None property

Get and set the uknots property

:type: None

UPeriodic: None property

Get and set the periodic property

:type: None

VClosed: None property

Get and set the closed property

:type: None

VDegree: None property

Get and set the degree property

:type: None

VKnots: None property

Get and set the vknots property

:type: None

VPeriodic: None property

Get and set the periodic property

:type: None

Weights: None property

Get and set the weights property

:type: None

Functions

Clear()

Clear data, getting invalid state

Get()

Get all surface members

Returns:

Type	Description
List[Point3D]	all control points,
List[float]	all control points weights,
List[float]	knots in u direction,
List[float]	knots in v direction,
int	degree in u direction,
int	degree in v direction,
bool	periodic in u direction,
bool	periodic in v direction,
bool	closed in u direction,
bool	closed in v direction

GetCenterPoint()

Get center point

Returns:

Type	Description
Point3D	center point

GetNormalVector(uv)

Evaluate normal vector for given parameters

Parameters:

Name	Type	Description	Default
uv	Point2D	uv paramaters	required

Returns:

Type	Description
eGeometryErrorCode	error code,
Vector3D	result vector

GetPoints()

Get control points

Returns:

Type	Description
Point3DList	all control points

GetUDegree()

Get surface u-degree

Returns:

Type	Description
int	surface degree

GetUKnots()

Get u-knot vector

Returns:

Type	Description
VecDoubleList	knot vector const reference

GetUPointsCount()

Get control points count in u-direction

Returns:

Type	Description
int	size_t control points count

GetVDegree()

Get surface v-degree

Returns:

Type	Description
int	surface degree

GetVKnots()

Get v-knot vector

Returns:

Type	Description
VecDoubleList	knot vector const reference

GetVPointsCount()

Get control points count in v-direction

Returns:

Type	Description
int	size_t control points count

GetWeights()

Get control points weights

Returns:

Type	Description
VecDoubleList	weights vector const reference

IsPlanar()

Check if surface is planar

Returns:

Type	Description
bool	bool true = yes

IsRational()

Check if the surface is rational

Returns:

Type	Description
bool	bool true = rational

IsUClosed()

Check if the surface is closed in U direction

Returns:

Type	Description
bool	bool true = closed

IsUPeriodic()

Check if the surface is periodic in U direction

Returns:

Type	Description
bool	bool true = periodic

IsVClosed()

Check if the surface is closed in V direction

Returns:

Type	Description
bool	bool true = closed

IsVPeriodic()

Check if the surface is periodic in V direction

Returns:

Type	Description
bool	bool true = periodic

IsValid()

Check surface validity

Returns:

Type	Description
bool	bool valid = true

Set(points, weights, uknots, vknots, udegree, vdegree, isUPeriodic, isVPeriodic, isUClosed, isVClosed)

Set all surface members

Parameters:

Name	Type	Description	Default
points	Point3DList	all control points	required
weights	VecDoubleList	all control points weights	required
uknots	VecDoubleList	knots in u direction	required
vknots	VecDoubleList	knots in v direction	required
udegree	int	degree in u direction	required
vdegree	int	degree in v direction	required
isUPeriodic	bool	periodic in u direction	required
isVPeriodic	bool	periodic in v direction	required
isUClosed	bool	closed in u direction	required
isVClosed	bool	closed in v direction	required

SetUDegree(degree)

Set surface v-degree

Parameters:

Name	Type	Description	Default
degree	int	desired degree	required

SetUKnots(knots)

Set u-knot vector

Parameters:

Name	Type	Description	Default
knots	VecDoubleList	knot vector to set	required

SetVDegree(degree)

Set surface v-degree

Parameters:

Name	Type	Description	Default
degree	int	desired degree	required

SetVKnots(knots)

Set v-knot vector

Parameters:

Name	Type	Description	Default
knots	VecDoubleList	knot vector to set	required

SetWeights(weights)

Set weights for control points

Parameters:

Name	Type	Description	Default
weights	VecDoubleList	weights vector to set	required

__eq__(bsplinesrfc)

Comparison of bsplinesrfcs without tolerance.

Be careful, this method work without tolerance!

Parameters:

Name	Type	Description	Default
bsplinesrfc	BSplineSurface3D	Compared bsplinesrfc.	required

Returns:

Type	Description
object	True when bsplinesrfcs are equal, otherwise false.

__init__ overload

__init__()

initialize

__init__(points, weights, uknots, vknots, udegree, vdegree, isUPeriodic, isVPeriodic, isUClosed, isVClosed)

Constructor.

Parameters:

Name	Type	Description	Default
points	Point3DList	all control points	required
weights	VecDoubleList	all control points weights	required
uknots	VecDoubleList	knots in u direction	required
vknots	VecDoubleList	knots in v direction	required
udegree	int	degree in u direction	required
vdegree	int	degree in v direction	required
isUPeriodic	bool	periodic in u direction	required
isVPeriodic	bool	periodic in v direction	required
isUClosed	bool	closed in u direction	required
isVClosed	bool	closed in v direction	required

__init__(surface)

Copy constructor.

Parameters:

Name	Type	Description	Default
surface	BSplineSurface3D	Surface which will be copied.	required

__repr__()

convert the list to a string