GeoPropertyIndex (JOSM)

java.lang.Object
- org.openstreetmap.josm.tools.GeoPropertyIndex<T>

Type Parameters:

T - the property (like land/water or nation)
```
public class GeoPropertyIndex<T>
extends java.lang.Object
```
Fast index to look up properties of the earth surface.
It is expected that there is a relatively slow method to look up the property for a certain coordinate and that there are larger areas with a uniform property.
This index tries to find rectangles with uniform property and caches them. Rectangles are subdivided, if there are different properties within. (Up to a maximum level, when the slow method is used again.)

Nested Class Summary

Nested Classes
Modifier and Type Class Description

protected static class GeoPropertyIndex.GPLevel<T>

Field Summary

Fields
Modifier and Type	Field	Description
`private static boolean`	`DEBUG`
`private GeoProperty<T>`	`geoProp`
`private GeoPropertyIndex.GPLevel<T>`	`lastLevelUsed`
`private int`	`maxLevel`
`private GeoPropertyIndex.GPLevel<T>`	`root`

Constructor Summary

Constructors
Constructor Description

GeoPropertyIndex(GeoProperty<T> geoProp, int maxLevel)
Create new GeoPropertyIndex.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`T`	`get(LatLon ll)`	Look up the property for a certain point.
`GeoProperty<T>`	`getGeoProperty()`	Returns the geo property.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - maxLevel
```
private final int maxLevel
```
  - geoProp
```
private final GeoProperty<T> geoProp
```
  - root
```
private final GeoPropertyIndex.GPLevel<T> root
```
  - lastLevelUsed
```
private GeoPropertyIndex.GPLevel<T> lastLevelUsed
```
  - DEBUG
```
private static final boolean DEBUG
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - GeoPropertyIndex
```
public GeoPropertyIndex(GeoProperty<T> geoProp,
                        int maxLevel)
```
    Create new GeoPropertyIndex.
    
    Parameters:
    
    geoProp - the input property that should be made faster by this index
    
    maxLevel - max level
- Method Detail
  - get
```
public T get(LatLon ll)
```
    Look up the property for a certain point. This gives the same result as GeoProperty.get(LatLon), but should be faster.
    
    Parameters:
    
    ll - the point coordinates
    
    Returns:
    
    property value at that point
  - getGeoProperty
```
public final GeoProperty<T> getGeoProperty()
```
    Returns the geo property.
    
    Returns:
    
    the geo property
    
    Since:
    
    14484
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object