Package com.esri.arcgisruntime.geoanalysis

Class LocationViewshed

java.lang.Object

com.esri.arcgisruntime.geoanalysis.Analysis

com.esri.arcgisruntime.geoanalysis.Viewshed

com.esri.arcgisruntime.geoanalysis.LocationViewshed

public final class LocationViewshed
extends Viewshed

LocationViewshed can be used to perform viewshed analysis that starts from a point location, known as the observer location, either provided by the user using setLocation(Point) or derived from a camera using updateFromCamera(Camera).

Viewshed direction can be controlled using setPitch(double) and setHeading(double).

Since:

100.2.0

Constructor Summary

Constructors

Constructor	Description
LocationViewshed(Point location, double heading, double pitch, double horizontalAngle, double verticalAngle, double minDistance, double maxDistance)	Constructs a viewshed positioned at the specified location, with direction given by the heading and pitch, spread from horizontalAngle, verticalAngle, minDistance, and maxDistance.
LocationViewshed(Camera camera, double minDistance, double maxDistance)	Constructs a viewshed from the location, direction, and field of view information from a camera, and a min and max distance.

Method Summary

Modifier and Type	Method	Description
double	getHeading()	Gets the heading value (azimuth) that defines the observer's view direction, in degrees within [0, 360].
Point	getLocation()	Gets the observer location of the viewshed.
double	getPitch()	Gets the pitch value (angle) of the observer's view, in degrees.
void	setHeading(double heading)	Sets the heading value (azimuth) that defines the observer's view direction, in degrees.
void	setLocation(Point location)	Sets the observer location of the viewshed.
void	setPitch(double pitch)	Sets the pitch value (angle) of the observer's view, in degrees, in degrees.
void	updateFromCamera(Camera camera)	Updates the frustum of the viewshed using the properties, such as position, pitch, and heading, of the supplied Camera.

Methods inherited from class com.esri.arcgisruntime.geoanalysis.Viewshed

getFrustumOutlineColor, getHorizontalAngle, getMaxDistance, getMinDistance, getObstructedColor, getVerticalAngle, getVisibleColor, isFrustumOutlineVisibile, setFrustumOutlineColor, setFrustumOutlineVisible, setHorizontalAngle, setMaxDistance, setMinDistance, setObstructedColor, setVerticalAngle, setVisibleColor

Methods inherited from class com.esri.arcgisruntime.geoanalysis.Analysis

isVisible, setVisible

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocationViewshed

public LocationViewshed(Camera camera,
                        double minDistance,
                        double maxDistance)

Constructs a viewshed from the location, direction, and field of view information from a camera, and a min and max distance.

Parameters:

camera - the camera to be used to derive location, direction and field of view information

minDistance - the minimum distance from the location where the viewshed starts to render, in meters within [0, Double.MAX_VALUE]

maxDistance - the maximum distance from the location where the viewshed starts to render, in meters within [0, Double.MAX_VALUE]

Throws:

java.lang.IllegalArgumentException - if camera is null

Since:

100.2.0

LocationViewshed

public LocationViewshed(Point location,
                        double heading,
                        double pitch,
                        double horizontalAngle,
                        double verticalAngle,
                        double minDistance,
                        double maxDistance)

Constructs a viewshed positioned at the specified location, with direction given by the heading and pitch, spread from horizontalAngle, verticalAngle, minDistance, and maxDistance.

Parameters:

location - observer location that represents the start of the viewshed

heading - the heading value (azimuth) that defines the observer's view direction, in degrees. It is measured clockwise from north in a ENU (East, North, Up Ground reference frames)

pitch - the pitch value (angle) of the observer's view, in degrees

horizontalAngle - the horizontal spread of the viewshed, in degrees, > 0 and <= 360

verticalAngle - the vertical spread of the viewshed, in degrees, > 0 and <= 360

minDistance - the minimum distance from the location where the viewshed starts to render, in meters within [0, Double.MAX_VALUE]

maxDistance - the maximum distance from the location where the viewshed starts to render, in meters within [0, Double.MAX_VALUE]

Throws:

java.lang.IllegalArgumentException - if location is null

Since:

100.2.0

Method Detail

getLocation

public Point getLocation()

Gets the observer location of the viewshed.

Returns:

the observer location of the viewshed

Since:

100.2.0

setLocation

public void setLocation(Point location)

Sets the observer location of the viewshed.

Parameters:

location - the observer location of the viewshed

Throws:

java.lang.IllegalArgumentException - if location is null

Since:

100.2.0

getHeading

public double getHeading()

Gets the heading value (azimuth) that defines the observer's view direction, in degrees within [0, 360].

Returns:

the heading direction of the viewshed, in degrees within [0, 360]

Since:

100.2.0

setHeading

public void setHeading(double heading)

Sets the heading value (azimuth) that defines the observer's view direction, in degrees. It is measured clockwise from north in a ENU (East, North, Up Ground reference frames).

Heading outside of [0, 360] is wrapped around.

Parameters:

heading - the heading direction of the viewshed, in degrees

Since:

100.2.0

getPitch

public double getPitch()

Gets the pitch value (angle) of the observer's view, in degrees.

Returns:

the pitch direction of the viewshed, in degrees

Since:

100.2.0

setPitch

public void setPitch(double pitch)

Sets the pitch value (angle) of the observer's view, in degrees, in degrees.

Parameters:

pitch - the pitch direction of the viewshed, in degrees

Since:

100.2.0

updateFromCamera

public void updateFromCamera(Camera camera)

Updates the frustum of the viewshed using the properties, such as position, pitch, and heading, of the supplied Camera.

Parameters:

camera - the camera to be used to derive various properties of the viewshed

Throws:

java.lang.IllegalArgumentException - if camera is null

Since:

100.2.0