Value and type information for per-instance geometry attribute that determines if the geometry instance will be shown.
| 参数名称 | 类型 | 默认值 | 描述信息 |
|---|---|---|---|
show |
boolean |
true
|
可选 Determines if the geometry instance will be shown. |
使用示例:
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 : {
show : new Cesium.ShowGeometryInstanceAttribute(false)
}
});参考:
成员(属性)
readonly componentDatatype : ComponentDatatype
The datatype of each component in the attribute, e.g., individual elements in
ColorGeometryInstanceAttribute#value.
The number of components in the attributes, i.e.,
ColorGeometryInstanceAttribute#value.
-
默认值:
1
When
true and componentDatatype is an integer format,
indicate that the components should be mapped to the range [0, 1] (unsigned)
or [-1, 1] (signed) when they are accessed as floating-point for rendering.
-
默认值:
true
The values for the attributes stored in a typed array.
-
默认值:
[1.0]
方法
Converts a boolean show to a typed array that can be used to assign a show attribute.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
show |
boolean | The show value. |
result |
Uint8Array | 可选 The array to store the result in, if undefined a new instance will be created. |
返回值:
The modified result parameter or a new instance if result was undefined.
使用示例:
const attributes = primitive.getGeometryInstanceAttributes('an id');
attributes.show = Cesium.ShowGeometryInstanceAttribute.toValue(true, attributes.show);