Titania X3D Editor

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Titania v4.0.1

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X3D Reference

NurbsPositionInterpolator

NurbsPositionInterpolator

NurbsPositionInterpolator describes a 3D NURBS curve and outputs interpolated position values.

The NurbsPositionInterpolator node belongs to the NURBS component and its container field is children. It is available since X3D version 3.0 or later.

Hierarchy

Fields

SFNode [in, out] metadata NULL [X3DMetadataObject]

Metadata are not part of the X3D world and not interpreted by the X3D browser, but they can be accessed via the ECMAScript interface.

SFFloat [in] set_fraction (-∞,∞)

Setting fraction in range [0,1] selects input key for corresponding keyValue output, computing a 3D position on the curve.

SFNode [in, out] controlPoint NULL [X3DCoordinateNode]

Input/Output field controlPoint.

MFDouble [in, out] knot [ ] (-∞,∞)

Knot vector, where size = number of control points + order of curve.

SFInt32 [in, out] order 3 (2,∞)

Define order of surface by polynomials of degree = order-1.

MFDouble [in, out] weight [ ] (-∞,∞)

Output values for linear interpolation, each corresponding to knots.

Hint

Number of weights must match number of knots!

SFVec3f [out] value_changed

Linearly interpolated output value determined by current key time and corresponding keyValue pair.

Description

Hint

  • The SFNode controlPoints field can contain a single Coordinate or CoordinateDouble node.

Browser Compatibility

Titania X_ITE
no no

External Links