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Spline3D

Class full path: NemAll_Python_Geometry.Spline3D

Bases: PolyPoints3D

class for 3D spline geometry

Attributes

EndVector: Vector3D property writable

Get end vector.

IsPeriodic: bool property writable

Check if spline is periodic ( first/last points are equal + start and end tangents are equal)

StartVector: Vector3D property writable

Get start vector.

Functions

CalculateEndVector()

Calculates end vector

Returns:

Type Description
Vector3D

End vector

CalculatePoint overload

CalculatePoint(param)

Calculates point on spline

Parameters:

Name Type Description Default
param float

parameter of spline.

required

Returns:

Type Description
Point3D

Resulting point

CalculatePoint(param, cpoints) staticmethod

Calculates point on spline

Parameters:

Name Type Description Default
param float

parameter of spline.

required
cpoints Point3DList

control points of spline.

required

Returns:

Type Description
Point3D

Resulting point

CalculateStartVector()

Calculates start vector

Returns:

Type Description
Vector3D

Start vector

CreateClosedSpline(points) staticmethod

Create closed spline from given points

Parameters:

Name Type Description Default
points Point3DList

Points

required

Returns:

Type Description
Spline3D

Spline

GetControlPoints()

Compute bezier control points

Returns:

Type Description
eGeometryErrorCode

error code

List[Point3D]

vector of control points)

GetEndVector()

Get end vector.

Returns:

Type Description
Vector3D

end vector.

GetStartVector()

Get start vector.

Returns:

Type Description
Vector3D

start vector.

IsClosed()

Check if spline is closed ( first/last points are equal )

Returns:

Type Description
bool

closed spline true/false

IsCollinear()

Function checks if the 3D spline is collinear - all control points are on same line

Returns:

Type Description
bool

true if collinear

IsPlanar()

Function checks if the 3D spline is planar, if yes sets the plane

Returns:

Type Description
bool

true if planar,

Plane3D

the plane the spline is laying on)

Reverse()

Reverse of current spline

Method reverse Spline using reverse from PolyPoints and swapping tangents.

SetEndVector(vec)

Set end vector.

Parameters:

Name Type Description Default
vec Vector3D

new end vector.

required

SetStartVector(vec)

Set start vector.

Parameters:

Name Type Description Default
vec Vector3D

new start vector.

required

__eq__(spline)

Comparison of splines without tolerance.

Be careful, this method work without tolerance!

Parameters:

Name Type Description Default
spline Spline3D

Compared spline.

required

Returns:

Type Description
object

True when splines are equal, otherwise false.

__iadd__(point)

Addition assignment operator

Parameters:

Name Type Description Default
point Point3D

New Point3D which will be added to the spline

required

Returns:

Type Description
Spline3D

Reference to spline

__init__ overload

__init__()

initialize

__init__(splinePoints)

constructor.

Parameters:

Name Type Description Default
splinePoints List
required
__init__(spline)

Copy constructor.

Parameters:

Name Type Description Default
spline Spline3D

Spline which will be copied.

required
__init__(spline, zPlane)

Copy constructor.

Parameters:

Name Type Description Default
spline Spline2D

Spline which will be copied.

required
zPlane float

Z plane for the spline

required

__repr__()

Convert to string