gov.nasa.worldwind.globe

Class BasicTerrain

java.lang.Object

gov.nasa.worldwind.globe.BasicTerrain

All Implemented Interfaces:

Terrain

public class BasicTerrain
extends java.lang.Object
implements Terrain

Constructor Summary

Constructors

Constructor and Description
BasicTerrain()

Method Summary

Modifier and Type	Method and Description
void	addTile(TerrainTile tile)
void	clear()
Sector	getSector() Indicates the geographic rectangular region that contains this terrain.
boolean	intersect(Line line, Vec3 result) Computes the first intersection of this terrain with a specified line in Cartesian coordinates.
void	setTriStripElements(short[] elements)
boolean	surfacePoint(double latitude, double longitude, Vec3 result) Computes the Cartesian coordinates of a geographic location on the terrain surface.

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicTerrain

public BasicTerrain()

Method Detail

addTile

public void addTile(TerrainTile tile)

clear

public void clear()

setTriStripElements

public void setTriStripElements(short[] elements)

getSector

public Sector getSector()

Description copied from interface: Terrain

Indicates the geographic rectangular region that contains this terrain. The returned sector may contain geographic areas where the terrain is nonexistent.

Specified by:

getSector in interface Terrain

Returns:

the terrain's bounding sector

intersect

public boolean intersect(Line line,
                         Vec3 result)

Description copied from interface: Terrain

Computes the first intersection of this terrain with a specified line in Cartesian coordinates. The line is interpreted as a ray; intersection points behind the line's origin are ignored. If the line does not intersect the geometric surface modeled by this terrain, this returns false and does not modify the result argument.

Specified by:

intersect in interface Terrain

Parameters:

line - the line to intersect with this terrain

result - a pre-allocated Vec3 in which to return the intersection point

Returns:

true if the ray intersects this terrain, otherwise false

surfacePoint

public boolean surfacePoint(double latitude,
                            double longitude,
                            Vec3 result)

Description copied from interface: Terrain

Computes the Cartesian coordinates of a geographic location on the terrain surface. If the latitude and longitude are outside the geometric surface modeled by this terrain, this returns false and does not modify the result argument.

Specified by:

surfacePoint in interface Terrain

Parameters:

latitude - the location's latitude in degrees

longitude - the location's longitude in degrees

result - a pre-allocated Vec3 in which to store the computed X, Y and Z Cartesian coordinates

Returns:

true if the geographic location is on the terrain surface, otherwise false