Package gov.nasa.worldwind.geom

Interface MeasurableArea

All Known Subinterfaces:

SurfaceShape

All Known Implementing Classes:

AbstractSurfaceShape, AreaMeasurer, DirectedSurfacePolyline, KMLSurfacePolygonImpl, SectorSelector.RegionShape, SurfaceBox, SurfaceCircle, SurfaceEllipse, SurfaceMultiPolygon, SurfacePolygon, SurfacePolygons, SurfacePolyline, SurfacePolylines, SurfaceQuad, SurfaceSector, SurfaceSquare

public interface MeasurableArea

This interfaces provides methods to query measurements of surface-defining objects. These methods all require a Globe parameter in order to compute their spatial location, and for terrain-confoming objects, the terrain elevations.

Method Summary

Modifier and Type	Method	Description
double	getArea(Globe globe)	Returns the object's area in square meters.
double	getHeight(Globe globe)	Returns the latitudanl length of the object in meters.
double	getPerimeter(Globe globe)	Returns the length of the object's perimeter in meters.
double	getWidth(Globe globe)	Returns the longitudinal length of the object in meters.

Method Detail

getArea

double getArea(Globe globe)

Returns the object's area in square meters. If the object conforms to terrain, the area returned is the surface area of the terrain, including its hillsides and other undulations.

Parameters:

globe - The globe the object is related to.

Returns:

the object's area in square meters. Returns -1 if the object does not form an area due to an insufficient number of vertices or any other condition.

Throws:

java.lang.IllegalArgumentException - if the globe is null.

getPerimeter

double getPerimeter(Globe globe)

Returns the length of the object's perimeter in meters. If the object conforms to terrain, the perimeter is that along the terrain, including its hillsides and other undulations.

Parameters:

globe - The globe the object is related to.

Returns:

the object's perimeter in meters. Returns -1 if the object does not form an area due to an insufficient number of vertices or any other condition.

Throws:

java.lang.IllegalArgumentException - if the globe is null.

getWidth

double getWidth(Globe globe)

Returns the longitudinal length of the object in meters. The length is the distance from the object's west-most point to its east-most. If the object is terrain conforming then the

Parameters:

globe - The globe the object is related to.

Returns:

the width of the object in meters.

Throws:

java.lang.IllegalArgumentException - if the globe is null.

getHeight

double getHeight(Globe globe)

Returns the latitudanl length of the object in meters. The length is the distance from the objects south-most point to its east-most position.

Parameters:

globe - The globe the object is related to.

Returns:

the height of the object in meters.

Throws:

java.lang.IllegalArgumentException - if the globe is null.