BSplineSurface3D

Canonical path: NemAll_Python_Geometry.BSplineSurface3D

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

Methods:

• Clear –

  Clear data, getting invalid state

• Get –

  Get all surface members

• GetCenterPoint –

  Get center point

• GetNormalVector –

  Evaluate normal vector for given parameters

• GetPoints –

  Get control points

• GetUDegree –

  Get surface u-degree

• GetUKnots –

  Get u-knot vector

• GetUPointsCount –

  Get control points count in u-direction

• GetVDegree –

  Get surface v-degree

• GetVKnots –

  Get v-knot vector

• GetVPointsCount –

  Get control points count in v-direction

• GetWeights –

  Get control points weights

• IsPlanar –

  Check if surface is planar

• IsRational –

  Check if the surface is rational

• IsUClosed –

  Check if the surface is closed in U direction

• IsUPeriodic –

  Check if the surface is periodic in U direction

• IsVClosed –

  Check if the surface is closed in V direction

• IsVPeriodic –

  Check if the surface is periodic in V direction

• IsValid –

  Check surface validity

• Set –

  Set all surface members

• SetUDegree –

  Set surface v-degree

• SetUKnots –

  Set u-knot vector

• SetVDegree –

  Set surface v-degree

• SetVKnots –

  Set v-knot vector

• SetWeights –

  Set weights for control points

• __eq__ –

  Comparison of BSplineSurface3D without tolerance.

• __init__ –

  Overloaded function. See individual overloads.

• __repr__ –

  Convert to string

Attributes:

• CenterPoint (Point3D) –

  Get center point

• Planar (bool) –

  Check if surface is planar

• Points (void) –

  Get control points

• Rational (bool) –

  Check if the surface is rational

• UClosed (bool) –

  Check if the surface is closed in U direction

• UDegree (int) –

  Get surface u-degree

• UKnots (VecDoubleList) –

  Get u-knot vector

• UPeriodic (bool) –

  Check if the surface is periodic in U direction

• UPointsCount (int) –

  Get control points count in u-direction

• VClosed (bool) –

  Check if the surface is closed in V direction

• VDegree (int) –

  Get surface v-degree

• VKnots (VecDoubleList) –

  Get v-knot vector

• VPeriodic (bool) –

  Check if the surface is periodic in V direction

• VPointsCount (int) –

  Get control points count in v-direction

• Valid (bool) –

  Check surface validity

• Weights (VecDoubleList) –

  Get control points weights

CenterPoint property

CenterPoint: Point3D

Get center point

Planar property writable

Planar: bool

Check if surface is planar

Points property

Points: void

Get control points

Rational property writable

Rational: bool

Check if the surface is rational

UClosed property writable

UClosed: bool

Check if the surface is closed in U direction

UDegree property writable

UDegree: int

Get surface u-degree

UKnots property writable

UKnots: VecDoubleList

Get u-knot vector

UPeriodic property writable

UPeriodic: bool

Check if the surface is periodic in U direction

UPointsCount property

UPointsCount: int

Get control points count in u-direction

VClosed property writable

VClosed: bool

Check if the surface is closed in V direction

VDegree property writable

VDegree: int

Get surface v-degree

VKnots property writable

VKnots: VecDoubleList

Get v-knot vector

VPeriodic property writable

VPeriodic: bool

Check if the surface is periodic in V direction

VPointsCount property

VPointsCount: int

Get control points count in v-direction

Valid property writable

Valid: bool

Check surface validity

Weights property writable

Weights: VecDoubleList

Get control points weights

Clear

Clear()

Clear data, getting invalid state

Get

Get() -> tuple[
    Point3DList,
    VecDoubleList,
    VecDoubleList,
    VecDoubleList,
    int,
    int,
    bool,
    bool,
    bool,
    bool,
]

Get all surface members

Returns:

• tuple[Point3DList, VecDoubleList, VecDoubleList, VecDoubleList, int, int, bool, bool, bool, bool] –

  tuple(all control points, all control points weights, knots in u direction, knots in v direction, degree in u direction, degree in v direction, periodic in u direction, periodic in v direction, closed in u direction, closed in v direction)

GetCenterPoint

GetCenterPoint() -> Point3D

Get center point

Returns:

• Point3D –

  center point

GetNormalVector

GetNormalVector(uv: Point2D) -> tuple[eGeometryErrorCode, Vector3D]

Evaluate normal vector for given parameters

Parameters:

• uv (Point2D) –

  uv paramaters

Returns:

• tuple[eGeometryErrorCode, Vector3D] –

  tuple(error code, result vector)

GetPoints

GetPoints() -> Point3DList

Get control points

Returns:

• Point3DList –

  all control points

GetUDegree

GetUDegree() -> int

Get surface u-degree

Returns:

• int –

  surface degree

GetUKnots

GetUKnots() -> VecDoubleList

Get u-knot vector

Returns:

• VecDoubleList –

  knot vector const reference

GetUPointsCount

GetUPointsCount() -> int

Get control points count in u-direction

Returns:

• int –

  size_t control points count

GetVDegree

GetVDegree() -> int

Get surface v-degree

Returns:

• int –

  surface degree

GetVKnots

GetVKnots() -> VecDoubleList

Get v-knot vector

Returns:

• VecDoubleList –

  knot vector const reference

GetVPointsCount

GetVPointsCount() -> int

Get control points count in v-direction

Returns:

• int –

  size_t control points count

GetWeights

GetWeights() -> VecDoubleList

Get control points weights

Returns:

• VecDoubleList –

  weights vector const reference

IsPlanar

IsPlanar() -> bool

Check if surface is planar

Returns:

• bool –

  bool true = yes

IsRational

IsRational() -> bool

Check if the surface is rational

Returns:

• bool –

  bool true = rational

IsUClosed

IsUClosed() -> bool

Check if the surface is closed in U direction

Returns:

• bool –

  bool true = closed

IsUPeriodic

IsUPeriodic() -> bool

Check if the surface is periodic in U direction

Returns:

• bool –

  bool true = periodic

IsVClosed

IsVClosed() -> bool

Check if the surface is closed in V direction

Returns:

• bool –

  bool true = closed

IsVPeriodic

IsVPeriodic() -> bool

Check if the surface is periodic in V direction

Returns:

• bool –

  bool true = periodic

IsValid

IsValid() -> bool

Check surface validity

Returns:

• bool –

  bool valid = true

Set

Set(
    points: Point3DList,
    weights: VecDoubleList,
    uknots: VecDoubleList,
    vknots: VecDoubleList,
    udegree: int,
    vdegree: int,
    isUPeriodic: bool,
    isVPeriodic: bool,
    isUClosed: bool,
    isVClosed: bool,
)

Set all surface members

Parameters:

• points (Point3DList) –

  all control points

• weights (VecDoubleList) –

  all control points weights

• uknots (VecDoubleList) –

  knots in u direction

• vknots (VecDoubleList) –

  knots in v direction

• udegree (int) –

  degree in u direction

• vdegree (int) –

  degree in v direction

• isUPeriodic (bool) –

  periodic in u direction

• isVPeriodic (bool) –

  periodic in v direction

• isUClosed (bool) –

  closed in u direction

• isVClosed (bool) –

  closed in v direction

SetUDegree

SetUDegree(degree: int)

Set surface v-degree

Parameters:

• degree (int) –

  desired degree

SetUKnots

SetUKnots(knots: VecDoubleList)

Set u-knot vector

Parameters:

• knots (VecDoubleList) –

  knot vector to set

SetVDegree

SetVDegree(degree: int)

Set surface v-degree

Parameters:

• degree (int) –

  desired degree

SetVKnots

SetVKnots(knots: VecDoubleList)

Set v-knot vector

Parameters:

• knots (VecDoubleList) –

  knot vector to set

SetWeights

SetWeights(weights: VecDoubleList)

Set weights for control points

Parameters:

• weights (VecDoubleList) –

  weights vector to set

__eq__

__eq__(bsplinesrfc: BSplineSurface3D) -> object

Comparison of BSplineSurface3D without tolerance.

Be careful, this method work without tolerance!

Parameters:

• bsplinesrfc (BSplineSurface3D) –

  Compared BSplineSurface3D.

Returns:

• object –

  True when BSplineSurface3D are equal, otherwise false.

__init__ overloaded

__init__()

Initialize

__init__(
    points: Point3DList,
    weights: VecDoubleList,
    uknots: VecDoubleList,
    vknots: VecDoubleList,
    udegree: int,
    vdegree: int,
    isUPeriodic: bool,
    isVPeriodic: bool,
    isUClosed: bool,
    isVClosed: bool,
)

Constructor

Parameters:

• points (Point3DList) –

  all control points

• weights (VecDoubleList) –

  all control points weights

• uknots (VecDoubleList) –

  knots in u direction

• vknots (VecDoubleList) –

  knots in v direction

• udegree (int) –

  degree in u direction

• vdegree (int) –

  degree in v direction

• isUPeriodic (bool) –

  periodic in u direction

• isVPeriodic (bool) –

  periodic in v direction

• isUClosed (bool) –

  closed in u direction

• isVClosed (bool) –

  closed in v direction

__init__(surface: BSplineSurface3D)

Copy constructor.

Parameters:

• surface (BSplineSurface3D) –

  Surface which will be copied.

__repr__

__repr__() -> str

Convert to string

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