pointList Element

pointList Element

A curve that interpolates a list of points.

Namespace: Empty

Schema: Empty

Type

curvePointListXYZType

Parents

fuselageProfile Complex Type

profileGeometryType Element

rotorAirfoil Element

wingAirfoil

Children

Name	Occurrences	Description
Sequence
x		Vector of x coordinates
y		Vector of y coordinates
z		Vector of z coordinates
kinkIndices	[0, 1]	Indices of points at which the curve has a kink. Each index is in the range [1, npoints].
parameterMap	[0, 1]	Map between point index and curve parameter.
approximationSettings	[0, 1]	If this element is specified, the given point list is approximated instead of interpolated when creating a b-spline representation of the profile. This has the advantage of more control over the complexity of the resulting b-spline curves, but does not guarantee that the b-spline curve passes through all given points as for the interpolation approach introducing possible imprecisions in the geometrical representation of the profile.

Attributes

Name	Type	Required	Description
externalDataDirectory	string
externalDataNodePath	string
externalFileName	string

Remarks

The curve interpolates the list of points, typically with a b-spline. In theory, the interpolation is somewhat ambiguous as it is not defined at which curve parameter a point will be interpolated.

To solve is ambiguity, an optional parameter map can be defined that maps point indices with curve parameters.

Kinks can also be modeled by populating the "kinks" array with the indices of points that should be on a kink. As an example, look at the following image:

In this example, the kinks array will be "3;7". Optionally, the parameters of the kinks can be set in the parameter map. The whole profile looks as follows:

Copy

<pointList>
    <x>...</x>
    <y>...</y>
    <z>...</z>
    <kinks>3;7</kinks>
    <parameterMap>
        <pointIndex>3;5;7</pointIndex>
        <paramOnCurve>0.2;0.5;0.8</paramOnCurve>
    </parameterMap>
</pointList>

Reference

profileGeometryType