curvePointListXYZType Complex Type

A curve that interpolates a list of points.

Namespace: Empty

Schema: Empty

Base Type

pointListXYZVectorType

Usages

pointList

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

Attributes

Name	Type	Description
externalDataDirectory	string	Directory of the external data file
externalDataNodePath	string	Path of the node inside the external data file
externalFileName	string	Name of the external data file

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>