DistanceDisplayConditionGeometryInstanceAttribute

new Cesium.DistanceDisplayConditionGeometryInstanceAttribute(near, far)

每英寸几何属性的值和类型信息,以确定几何实例是否有距离显示条件.

Name	Type	Default	Description
`near`	number	`0.0`	optional 近远.
`far`	number	`Number.MAX_VALUE`	optional The far distance.

Throws:

DeveloperError : far must be greater than near.

Example:

const instance = new Cesium.GeometryInstance({
  geometry : new Cesium.BoxGeometry({
    vertexFormat : Cesium.VertexFormat.POSITION_AND_NORMAL,
    minimum : new Cesium.Cartesian3(-250000.0, -250000.0, -250000.0),
    maximum : new Cesium.Cartesian3(250000.0, 250000.0, 250000.0)
  }),
  modelMatrix : Cesium.Matrix4.multiplyByTranslation(Cesium.Transforms.eastNorthUpToFixedFrame(
    Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883)), new Cesium.Cartesian3(0.0, 0.0, 1000000.0), new Cesium.Matrix4()),
  id : 'box',
  attributes : {
    distanceDisplayCondition : new Cesium.DistanceDisplayConditionGeometryInstanceAttribute(100.0, 10000.0)
  }
});

See:

Members

readonly componentDatatype : ComponentDatatype

The datatype of each component in the attribute, e.g., individual elements in DistanceDisplayConditionGeometryInstanceAttribute#value.

Default Value: ComponentDatatype.FLOAT

readonly componentsPerAttribute : number

属性中的组件数, i.e ., DistanceDisplayConditionGeometryInstanceAttribute#value .

Default Value: 3

readonly normalize : boolean

当 NT 0 true NT 1 和 NT 2 组件Datatype NT 3 是一个整数格式时, indicate that the components should be mapped to the range [0, 1] (unsigned) 或[-1, 1] (署名),当它们作为浮点进行渲染时.

Default Value: false

value : Float32Array

输入数组中存储属性的值 .

Default Value: [0.0, 0.0, Number.MAX_VALUE ]

Methods

static Cesium.DistanceDisplayConditionGeometryInstanceAttribute.fromDistanceDisplayCondition(distanceDisplayCondition) → DistanceDisplayConditionGeometryInstanceAttribute

Creates a new DistanceDisplayConditionGeometryInstanceAttribute instance given the provided an enabled flag and DistanceDisplayCondition.

Name	Type	Description
`distanceDisplayCondition`	DistanceDisplayCondition	距离显示条件 .

Returns:

The new DistanceDisplayConditionGeometryInstanceAttribute instance.

Throws:

DeveloperError : distanceDisplayCondition.far must be greater than distanceDisplayCondition.near

Example:

const distanceDisplayCondition = new Cesium.DistanceDisplayCondition(100.0, 10000.0);
const instance = new Cesium.GeometryInstance({
  geometry : geometry,
  attributes : {
    distanceDisplayCondition : Cesium.DistanceDisplayConditionGeometryInstanceAttribute.fromDistanceDisplayCondition(distanceDisplayCondition)
  }
});

static Cesium.DistanceDisplayConditionGeometryInstanceAttribute.toValue(distanceDisplayCondition, result) → Float32Array

将远程显示条件转换为可以用来指定远程显示条件属性的打字阵列.

Name	Type	Description
`distanceDisplayCondition`	DistanceDisplayCondition	距离显示条件值 .
`result`	Float32Array	optional 如果创建未定义的新实例, 将存储结果的数组 .

Returns:

如果结果未定义, 修改后的结果参数或新实例 .

Example:

const attributes = primitive.getGeometryInstanceAttributes('an id');
attributes.distanceDisplayCondition = Cesium.DistanceDisplayConditionGeometryInstanceAttribute.toValue(distanceDisplayCondition, attributes.distanceDisplayCondition);