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
GeoErrorCode	tuple(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	tuple(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