Spline

new Cesium.Spline()

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

Members

points : Array.<Cartesian3>|Array.<Quaternion>

An array of control points.
Default Value: undefined

times : Array.<Number>

An array of times for the control points.
Default Value: undefined

Methods

clampTime(time)Number

Clamps the given time to the period covered by the spline.
Name Type Description
time Number The time.
Returns:
The time, clamped to the animation period.

evaluate(time, result)Cartesian3|Quaternion

Evaluates the curve at a given time.
Name Type Description
time Number The time at which to evaluate the curve.
result Cartesian3 | Quaternion optional The object onto which to store the result.
Returns:
The modified result parameter or a new instance of the point on the curve at the given time.
Throws:
  • DeveloperError : time must be in the range [t0, tn], where t0 is the first element in the array times and tn is the last element in the array times.

findTimeInterval(time, startIndex)Number

Finds an index i in times such that the parameter time is in the interval [times[i], times[i + 1]].
Name Type Description
time Number The time.
startIndex Number The index from which to start the search.
Returns:
The index for the element at the start of the interval.
Throws:
  • DeveloperError : time must be in the range [t0, tn], where t0 is the first element in the array times and tn is the last element in the array times.

wrapTime(time)Number

Wraps the given time to the period covered by the spline.
Name Type Description
time Number The time.
Returns:
The time, wrapped around the animation period.