Spline - Cesium Documentation

Spline

new Spline

Creates a curve parameterized and evaluated by time. This type describes an interface and is not intended to be instantiated directly.

See:

Source:

/Source/Core/Spline.js

Members

points :Array

An array of control points.

Default Value:

undefined

times :Array

An array of times for the control points.

Default Value:

undefined

Methods

evaluate

Evaluates the curve at a given time.

Parameters:

Name	Type	Argument	Description
`time`	Number		The time at which to evaluate the curve.
`result`	Cartesian3 \| Quaternion	<optional>	The object onto which to store the result.

Throws:

DeveloperError : time must be in the range [t₀, t_n], where t₀ is the first element in the array times and t_n is the last element in the array times.

Returns:

Cartesian3 | Quaternion The modified result parameter or a new instance of the point on the curve at the given time.

findTimeInterval

Finds an index i in times such that the parameter time is in the interval [times[i], times[i + 1]].

Parameters:

Name	Type	Description
`time`	Number	The time.
`startIndex`	Number	The index from which to start the search.

Throws:

DeveloperError : time must be in the range [t₀, t_n], where t₀ is the first element in the array times and t_n is the last element in the array times.

Returns:

Number The index for the element at the start of the interval.