Package org.apache.lucene.spatial3d.geom
Class PlanetModel
- java.lang.Object
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- org.apache.lucene.spatial3d.geom.PlanetModel
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- All Implemented Interfaces:
SerializableObject
public class PlanetModel extends Object implements SerializableObject
Holds mathematical constants associated with the model of a planet.- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Field Summary
Fields Modifier and Type Field Description doubleabThe x/y scaling factordoublecThe z scaling factordoubleflatteningThe flattening valuedoubleinverseAbThe inverse of abdoubleinverseAbSquaredThe square of the inverse of abdoubleinverseCThe inverse of cdoubleinverseCSquaredThe square of the inverse of cdoubleinverseScaleThe inverse of scaleGeoPointMAX_X_POLEMax X poleGeoPointMAX_Y_POLEMax Y poleGeoPointMIN_X_POLEMin X poleGeoPointMIN_Y_POLEMin Y poledoubleminimumPoleDistanceMinimum surface distance between polesGeoPointNORTH_POLENorth poledoublescaleThe scale of the planetGeoPointSOUTH_POLESouth polestatic PlanetModelSPHEREPlanet model corresponding to sphere.doublesquareRatioThe square ratiostatic PlanetModelWGS84Planet model corresponding to WGS84static doubleWGS84_EQUATORIALEquatorial radiusstatic doubleWGS84_MEANMean radiusstatic doubleWGS84_POLARPolar radius
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Constructor Summary
Constructors Constructor Description PlanetModel(double ab, double c)Constructor.PlanetModel(InputStream inputStream)Deserialization constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description GeoPointbisection(GeoPoint pt1, GeoPoint pt2)Compute a GeoPoint that's a bisection between two other GeoPoints.GeoPointcreateSurfacePoint(double x, double y, double z)Compute a GeoPoint that's based on (x,y,z) values, but is scaled to actually be on the planet surface.GeoPointcreateSurfacePoint(Vector vector)Compute a GeoPoint that's scaled to actually be on the planet surface.booleanequals(Object o)doublegetMaximumMagnitude()Find the maximum magnitude of all points on the ellipsoid.doublegetMaximumXValue()Find the maximum x value.doublegetMaximumYValue()Find the maximum y value.doublegetMaximumZValue()Find the maximum z value.doublegetMinimumMagnitude()Find the minimum magnitude of all points on the ellipsoid.doublegetMinimumXValue()Find the minimum x value.doublegetMinimumYValue()Find the minimum y value.doublegetMinimumZValue()Find the minimum z value.inthashCode()booleanisSphere()Does this planet model describe a sphere?booleanpointOnSurface(double x, double y, double z)Check if point is on surface.booleanpointOnSurface(Vector v)Check if point is on surface.booleanpointOutside(double x, double y, double z)Check if point is outside surface.booleanpointOutside(Vector v)Check if point is outside surface.doublesurfaceDistance(GeoPoint pt1, GeoPoint pt2)Compute surface distance between two points.GeoPointsurfacePointOnBearing(GeoPoint from, double dist, double bearing)Compute new point given original point, a bearing direction, and an adjusted angle (as would be computed by the surfaceDistance() method above).StringtoString()voidwrite(OutputStream outputStream)Serialize to output stream.
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Field Detail
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SPHERE
public static final PlanetModel SPHERE
Planet model corresponding to sphere.
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WGS84_MEAN
public static final double WGS84_MEAN
Mean radius- See Also:
- Constant Field Values
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WGS84_POLAR
public static final double WGS84_POLAR
Polar radius- See Also:
- Constant Field Values
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WGS84_EQUATORIAL
public static final double WGS84_EQUATORIAL
Equatorial radius- See Also:
- Constant Field Values
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WGS84
public static final PlanetModel WGS84
Planet model corresponding to WGS84
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ab
public final double ab
The x/y scaling factor
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c
public final double c
The z scaling factor
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inverseAb
public final double inverseAb
The inverse of ab
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inverseC
public final double inverseC
The inverse of c
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inverseAbSquared
public final double inverseAbSquared
The square of the inverse of ab
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inverseCSquared
public final double inverseCSquared
The square of the inverse of c
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flattening
public final double flattening
The flattening value
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squareRatio
public final double squareRatio
The square ratio
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scale
public final double scale
The scale of the planet
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inverseScale
public final double inverseScale
The inverse of scale
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NORTH_POLE
public final GeoPoint NORTH_POLE
North pole
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SOUTH_POLE
public final GeoPoint SOUTH_POLE
South pole
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MIN_X_POLE
public final GeoPoint MIN_X_POLE
Min X pole
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MAX_X_POLE
public final GeoPoint MAX_X_POLE
Max X pole
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MIN_Y_POLE
public final GeoPoint MIN_Y_POLE
Min Y pole
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MAX_Y_POLE
public final GeoPoint MAX_Y_POLE
Max Y pole
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minimumPoleDistance
public final double minimumPoleDistance
Minimum surface distance between poles
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Constructor Detail
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PlanetModel
public PlanetModel(double ab, double c)Constructor.- Parameters:
ab- is the x/y scaling factor.c- is the z scaling factor.
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PlanetModel
public PlanetModel(InputStream inputStream) throws IOException
Deserialization constructor.- Parameters:
inputStream- is the input stream.- Throws:
IOException
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Method Detail
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write
public void write(OutputStream outputStream) throws IOException
Description copied from interface:SerializableObjectSerialize to output stream.- Specified by:
writein interfaceSerializableObject- Parameters:
outputStream- is the output stream to write to.- Throws:
IOException
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isSphere
public boolean isSphere()
Does this planet model describe a sphere?- Returns:
- true if so.
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getMinimumMagnitude
public double getMinimumMagnitude()
Find the minimum magnitude of all points on the ellipsoid.- Returns:
- the minimum magnitude for the planet.
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getMaximumMagnitude
public double getMaximumMagnitude()
Find the maximum magnitude of all points on the ellipsoid.- Returns:
- the maximum magnitude for the planet.
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getMinimumXValue
public double getMinimumXValue()
Find the minimum x value.- Returns:
- the minimum X value.
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getMaximumXValue
public double getMaximumXValue()
Find the maximum x value.- Returns:
- the maximum X value.
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getMinimumYValue
public double getMinimumYValue()
Find the minimum y value.- Returns:
- the minimum Y value.
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getMaximumYValue
public double getMaximumYValue()
Find the maximum y value.- Returns:
- the maximum Y value.
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getMinimumZValue
public double getMinimumZValue()
Find the minimum z value.- Returns:
- the minimum Z value.
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getMaximumZValue
public double getMaximumZValue()
Find the maximum z value.- Returns:
- the maximum Z value.
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pointOnSurface
public boolean pointOnSurface(Vector v)
Check if point is on surface.- Parameters:
v- is the point to check.- Returns:
- true if the point is on the planet surface.
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pointOnSurface
public boolean pointOnSurface(double x, double y, double z)Check if point is on surface.- Parameters:
x- is the x coord.y- is the y coord.z- is the z coord.
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pointOutside
public boolean pointOutside(Vector v)
Check if point is outside surface.- Parameters:
v- is the point to check.- Returns:
- true if the point is outside the planet surface.
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pointOutside
public boolean pointOutside(double x, double y, double z)Check if point is outside surface.- Parameters:
x- is the x coord.y- is the y coord.z- is the z coord.
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createSurfacePoint
public GeoPoint createSurfacePoint(Vector vector)
Compute a GeoPoint that's scaled to actually be on the planet surface.- Parameters:
vector- is the vector.- Returns:
- the scaled point.
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createSurfacePoint
public GeoPoint createSurfacePoint(double x, double y, double z)
Compute a GeoPoint that's based on (x,y,z) values, but is scaled to actually be on the planet surface.- Parameters:
x- is the x value.y- is the y value.z- is the z value.- Returns:
- the scaled point.
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bisection
public GeoPoint bisection(GeoPoint pt1, GeoPoint pt2)
Compute a GeoPoint that's a bisection between two other GeoPoints.- Parameters:
pt1- is the first point.pt2- is the second point.- Returns:
- the bisection point, or null if a unique one cannot be found.
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surfaceDistance
public double surfaceDistance(GeoPoint pt1, GeoPoint pt2)
Compute surface distance between two points.- Parameters:
pt1- is the first point.pt2- is the second point.- Returns:
- the adjusted angle, when multiplied by the mean earth radius, yields a surface distance. This will differ
from GeoPoint.arcDistance() only when the planet model is not a sphere. @see
GeoPoint.arcDistance(Vector)
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surfacePointOnBearing
public GeoPoint surfacePointOnBearing(GeoPoint from, double dist, double bearing)
Compute new point given original point, a bearing direction, and an adjusted angle (as would be computed by the surfaceDistance() method above). The original point can be anywhere on the globe. The bearing direction ranges from 0 (due east at the equator) to pi/2 (due north) to pi (due west at the equator) to 3 pi/4 (due south) to 2 pi.- Parameters:
from- is the starting point.dist- is the adjusted angle.bearing- is the direction to proceed.- Returns:
- the new point, consistent with the bearing direction and distance.
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