com.maryanovsky.map.client.projections
Class MercatorProjection
java.lang.Object
com.maryanovsky.map.client.projections.AbstractProjection
com.maryanovsky.map.client.projections.MercatorProjection
- All Implemented Interfaces:
- Projection
- Direct Known Subclasses:
- Osgeo41001Projection, OsmMercatorProjection
public class MercatorProjection
- extends AbstractProjection
An implementation of the mercator projection.
Constructor Summary |
MercatorProjection(ZoomStrategy zoomStrategy,
int nativeZoom,
SizeView worldSize,
boolean longitudeWraps,
double centralLongitude,
double maxMercatorY)
Creates a new MercatorProjection with the specified arguments. |
Method Summary |
protected double[] |
fromLatLngToPixelImpl(LatLng latLng)
Converts from latitude-longitude to pixel coordinates at the native zoom. |
protected LatLng |
fromPixelToLatLngImpl(double x,
double y)
Converts from pixel coordinates to latitude-longitude at the native zoom. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
MercatorProjection
public MercatorProjection(ZoomStrategy zoomStrategy,
int nativeZoom,
SizeView worldSize,
boolean longitudeWraps,
double centralLongitude,
double maxMercatorY)
- Creates a new MercatorProjection with the specified arguments.
- Parameters:
zoomStrategy
- The strategy that defines zoom magnification for us.nativeZoom
- The "native" zoom. There is no special meaning to this
zoom other than that worldSize is given at that zoom.worldSize
- The size of the world, in pixels, at the native zoom.longitudeWraps
- Whether the map wraps around the X (longitude)
axis.centralLongitude
- The longitude at the center of the map.maxMercatorY
- The Y mercator value at the top (and the opposite of
the value at the bottom) of the map.
fromLatLngToPixelImpl
protected double[] fromLatLngToPixelImpl(LatLng latLng)
- Converts from latitude-longitude to pixel coordinates at the native zoom.
Returns the X and Y coordinates in a 2-element array. The returned values
must be in the range
[0, worldWidth or worldHeight]
.
- Specified by:
fromLatLngToPixelImpl
in class AbstractProjection
fromPixelToLatLngImpl
protected LatLng fromPixelToLatLngImpl(double x,
double y)
- Converts from pixel coordinates to latitude-longitude at the native zoom.
The passed values are guaranteed to be in the range
[0, worldWidth or worldHeight]
.
- Specified by:
fromPixelToLatLngImpl
in class AbstractProjection