# ViewshedAnalysis

#### new Cesium.ViewshedAnalysis()
MapGIS/Analysis/ViewshedAnalysis.js 50

可视域分析

### Members

#### heading : Number
MapGIS/Analysis/ViewshedAnalysis.js 853

方位角

#### horizontAngle : Number
MapGIS/Analysis/ViewshedAnalysis.js 823

水平夹角

#### nearOffset : Number
MapGIS/Analysis/ViewshedAnalysis.js 917

主相机的近裁剪面偏移系数，默认0.1，即主相机近裁剪面距离变成之前的10分之1，为了解决可视域分析的闪烁问题

#### pitch : Number
MapGIS/Analysis/ViewshedAnalysis.js 871

俯仰角

#### targetPosition : Cartesian3
MapGIS/Analysis/ViewshedAnalysis.js 771

目标点

#### unVisibleColor : Color
MapGIS/Analysis/ViewshedAnalysis.js 903

不可视区域的颜色

#### verticalAngle : Number
MapGIS/Analysis/ViewshedAnalysis.js 838

垂直夹角

#### viewPosition : Cartesian3
MapGIS/Analysis/ViewshedAnalysis.js 758

视点

#### viewRadius : Number
MapGIS/Analysis/ViewshedAnalysis.js 794

可视半径

#### visibleColor : Color
MapGIS/Analysis/ViewshedAnalysis.js 889

可视区域的颜色