GeoElementViewshed QML Type
An analysis object that renders a viewshed for a specified GeoElement. More...
| Import Statement: | import Esri.ArcGISRuntime |
| Since: | Esri.ArcGISRuntime 100.2 |
| Inherits: |
Properties
- geoElement : GeoElement
- headingOffset : double
- offsetX : double
- offsetY : double
- offsetZ : double
- pitchOffset : double
Signals
- geoElementChanged()
- headingOffsetChanged()
- offsetXChanged()
- offsetYChanged()
- offsetZChanged()
- pitchOffsetChanged()
Detailed Description
GeoElementViewshed determines visible and non-visible areas in a scene view for an observer defined with a GeoElement. The viewshed will be updated as the GeoElement location changes.
Visible and non-visible areas are determined for an area defined by the location and orientation of a GeoElement, view angles, and the minimum/maximum distance range. These parameters define the frustum over which visibility is calculated from the observer GeoElement. Terrain and other obstacles between the observer and the minimum distance are excluded from the analysis, as are areas beyond the maximum distance.
The observer location is determined by the GeoElement location plus the offset X,Y,Z values. Any rotations applied to the GeoElement will also be applied to the X,Y,Z offsets with the GeoElement being the center of the offsets' rotation. This allows the observer to be positioned relative to the GeoElement and maintain the relative position even when the GeoElement moves and rotates.
Default properties
This QML type supports the following default properties. A default property may be declared inside another declared object without being assigned explicitly to a property.
| Type | Default Property |
|---|---|
| GeoElement | geoElement |
Property Documentation
[default] geoElement : GeoElement |
The GeoElement that represents the observer for the viewshed analysis.
The observer's location, heading, and pitch are determined by the location and orientation of this GeoElement.
headingOffset : double |
The heading offset relative to the observer GeoElement heading.
The observer's heading is determined by the GeoElement heading plus the heading offset.
offsetX : double |
The location offset in the X direction that defines the observer relative to the GeoElement.
offsetY : double |
The location offset in the Y direction that defines the observer relative to the GeoElement.
offsetZ : double |
The location offset in the Z direction that defines the observer relative to the GeoElement.
pitchOffset : double |
The pitch offset relative to the observer GeoElement pitch.
The observer's pitch is determined by the GeoElement pitch plus the pitch offset.
Signal Documentation
geoElementChanged() |
Emitted when the geoElement property changes.
Note: The corresponding handler is onGeoElementChanged.
headingOffsetChanged() |
Emitted when the headingOffset property changes.
Note: The corresponding handler is onHeadingOffsetChanged.
offsetXChanged() |
Emitted when the offsetX property changes.
Note: The corresponding handler is onOffsetXChanged.
offsetYChanged() |
Emitted when the offsetY property changes.
Note: The corresponding handler is onOffsetYChanged.
offsetZChanged() |
Emitted when the offsetZ property changes.
Note: The corresponding handler is onOffsetZChanged.
pitchOffsetChanged() |
Emitted when the pitchOffset property changes.
Note: The corresponding handler is onPitchOffsetChanged.