ConstantPositionProperty
查阅Mars3D API

new Cesium.ConstantPositionProperty(value, referenceFrame)
engine/Source/DataSources/ConstantPositionProperty.js 19

A PositionProperty whose value does not change in respect to the ReferenceFrame in which is it defined.
参数名称 类型 默认值 描述信息
value Cartesian3 可选 The property value.
referenceFrame ReferenceFrame ReferenceFrame.FIXED 可选 The reference frame in which the position is defined.

成员(属性)

readonly definitionChanged : Event
engine/Source/DataSources/ConstantPositionProperty.js 50

Gets the event that is raised whenever the definition of this property changes. The definition is considered to have changed if a call to getValue would return a different result for the same time.

readonly isConstant : boolean
engine/Source/DataSources/ConstantPositionProperty.js 34

Gets a value indicating if this property is constant. A property is considered constant if getValue always returns the same result for the current definition.

referenceFrame : ReferenceFrame
engine/Source/DataSources/ConstantPositionProperty.js 61

Gets the reference frame in which the position is defined.
默认值: ReferenceFrame.FIXED;

方法

equals(other) → boolean
engine/Source/DataSources/ConstantPositionProperty.js 143

Compares this property to the provided property and returns true if they are equal, false otherwise.
参数名称 类型 描述信息
other Property 可选 The other property.
返回值:
true if left and right are equal, false otherwise.

getValue(time, result) → object
engine/Source/DataSources/ConstantPositionProperty.js 77

Gets the value of the property at the provided time in the fixed frame.
参数名称 类型 默认值 描述信息
time JulianDate JulianDate.now() 可选 The time for which to retrieve the value. If omitted, the current system time is used.
result object 可选 The object to store the value into, if omitted, a new instance is created and returned.
返回值:
The modified result parameter or a new instance if the result parameter was not supplied.

getValueInReferenceFrame(time, referenceFrame, result) → Cartesian3
engine/Source/DataSources/ConstantPositionProperty.js 113

Gets the value of the property at the provided time and in the provided reference frame.
参数名称 类型 描述信息
time JulianDate The time for which to retrieve the value.
referenceFrame ReferenceFrame The desired referenceFrame of the result.
result Cartesian3 可选 The object to store the value into, if omitted, a new instance is created and returned.
返回值:
The modified result parameter or a new instance if the result parameter was not supplied.

setValue(value, referenceFrame)
engine/Source/DataSources/ConstantPositionProperty.js 90

Sets the value of the property.
参数名称 类型 默认值 描述信息
value Cartesian3 The property value.
referenceFrame ReferenceFrame this.referenceFrame 可选 The reference frame in which the position is defined.
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