# 14.4.10 ParametricLineGeometry

Topic Version | 1 | Published | 09/11/2015 | |

For Standard | RESQML v2.0.1 | |||

Stereotypes: | XSDcomplexType |

Defines a parametric line of any kind.

For more information on the supported parametric lines, see ParametricLineArray.

Name |
Data Type |
Notes |
---|---|---|

ControlPointParameters |
AbstractDoubleArray |
An array of explicit control point parameters for the control points on the parametric line. BUSINESS RULE: The size must match the number of control points. |

ControlPoints |
AbstractPoint3dArray |
An array of 3D points for the control points on the parametric line. |

KnotCount |
positiveInteger |
Number of spline knots in the parametric line. |

LineKindIndex |
integer |
Integer indicating the parametric line kind 0 for vertical 1 for linear spline 2 for natural cubic spline 3 for cubic spline 4 for z linear cubic spline 5 for minimum-curvature spline (-1) for null: no line |

TangentVectors |
AbstractPoint3dArray |
An optional array of tangent vectors for each control point on the cubic and minimum-curvature parametric lines. Used only if tangent vectors are present. If a tangent vector is missing, then it is computed in the same fashion as for a natural cubic spline. Specifically, to obtain the tangent at internal knots, the control points are fit by a quadratic function with the two adjacent control points. At edge knots, the second derivative vanishes. |

Derived From: AbstractParametricLineGeometry

Derived Classes: (none)

Relationships: None