KBE3D / KBCore / Cesium / ConstantSpline

类: ConstantSpline

A spline that evaluates to a constant value. Although this follows the Spline interface, it does not maintain an internal array of times since its value never changes.

示例

const position = new Cesium.Cartesian3(1.0, 2.0, 3.0);
const spline = new Cesium.ConstantSpline(position);

const p0 = spline.evaluate(0.0);

参数

The constant value that the spline evaluates to.

属性

value

readonly value: number | Cartesian3 | Quaternion

The constant value that the spline evaluates to.

方法

findTimeInterval()

findTimeInterval(time: number): void

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

Since a constant spline has no internal times array, this will throw an error.

参数

time

number

The time.

返回

void

---

wrapTime()

wrapTime(time: number): number

Wraps the given time to the period covered by the spline.

参数

time

number

The time.

返回

number

The time, wrapped around to the updated animation.

---

clampTime()

clampTime(time: number): number

Clamps the given time to the period covered by the spline.

参数

time

number

The time.

返回

number

The time, clamped to the animation period.

---

evaluate()

evaluate(time: number, result?: Cartesian3 | Quaternion): number | Cartesian3 | Quaternion

Evaluates the curve at a given time.

参数

time

number

The time at which to evaluate the curve.

result?

The object onto which to store the result.

Cartesian3 | Quaternion

返回

number | Cartesian3 | Quaternion

The modified result parameter or the value that the constant spline represents.

构造函数

构造函数

new ConstantSpline(value: number | Cartesian3 | Quaternion): ConstantSpline

参数

value

number | Cartesian3 | Quaternion

返回

ConstantSpline