com.bbn.openmap.proj
Class LLXYView

java.lang.Object
  |
  +--com.bbn.openmap.proj.Proj
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        +--com.bbn.openmap.proj.Cylindrical
              |
              +--com.bbn.openmap.proj.LLXY
                    |
                    +--com.bbn.openmap.proj.LLXYView

All Implemented Interfaces:

java.lang.Cloneable, EqualArc, Projection, java.io.Serializable

public class LLXYView

extends LLXY

Implements the LLXY projection.

See Also:

Serialized Form

Field Summary

protected int	dUSX
protected int	dUSY delta between U and S, X axis
static java.lang.String	LLXYViewName The LLXY name.
static int	LLXYViewType The LLXY type of projection.
protected int	sCtrX Screen Origin in pixels (center=0,0)
protected int	sCtrY Screen Origin in pixels (center=0,0)
protected LatLonPoint	uCtr User-Space Center in lat/lon
protected float	uCtrLat
protected float	uCtrLon
protected int	uCtrX User Origin in pixels 0,0 = lat/lon center
protected int	uCtrY

Fields inherited from class com.bbn.openmap.proj.LLXY

cLat, cLon, hy, LLXYName, LLXYType, ppd, wx

Fields inherited from class com.bbn.openmap.proj.Cylindrical

half_world, world

Fields inherited from class com.bbn.openmap.proj.Proj

ctrLat, ctrLon, DATELINE, height, maxscale, mercator, MIN_HEIGHT, MIN_WIDTH, minscale, NORTH_POLE, NUM_DEFAULT_CIRCLE_VERTS, NUM_DEFAULT_GREAT_SEGS, pixelsPerMeter, planetPixelCircumference, planetPixelRadius, planetRadius, projID, scale, scaled_radius, SOUTH_POLE, type, width, XSCALE_THRESHOLD, XTHRESHOLD

Constructor Summary

LLXYView(LatLonPoint center, float scale, int width, int height)
Construct a LLXY projection.

Method Summary

protected void	computeParameters() Called when some fundamental parameters change.
java.awt.Point	forward(float lat, float lon, java.awt.Point p) Forward projects a lat,lon coordinates.
java.awt.Point	forward(float lat, float lon, java.awt.Point p, boolean isRadian) Forward projects lat,lon into XY space and returns a Point.
java.awt.Point	forward(LatLonPoint pt, java.awt.Point p) Projects a point from Lat/Lon space to X/Y space.
LatLonPoint	inverse(int x, int y, LatLonPoint llp) Inverse project x,y coordinates into a LatLonPoint.
LatLonPoint	inverse(java.awt.Point pt, LatLonPoint llp) Inverse project a Point.
java.lang.String	toString() Return stringified description of this projection.

Methods inherited from class com.bbn.openmap.proj.LLXY

getName, getXPixConstant, getYPixConstant, isPlotable, normalize_latitude

Methods inherited from class com.bbn.openmap.proj.Cylindrical

_forwardPoly, drawBackground, drawBackground, forwardRaw, getLowerRight, getUpperLeft, pan

Methods inherited from class com.bbn.openmap.proj.Proj

clone, doPolyDispatch, equals, forward, forward, forwardArc, forwardArc, forwardArc, forwardCircle, forwardCircle, forwardCircle, forwardGreatPoly, forwardLine, forwardLine, forwardPoly, forwardPoly, forwardRaster, forwardRect, forwardRect, forwardRect, forwardRhumbPoly, getCenter, getHeight, getMaxScale, getMinScale, getPlanetPixelCircumference, getPlanetPixelRadius, getPlanetRadius, getPPM, getProjectionID, getProjectionType, getScale, getScale, getWidth, hashCode, inverse, inverse, isComplicatedLineType, isPlotable, makeClone, pan, panE, panE, panN, panN, panNE, panNE, panNW, panNW, panS, panS, panSE, panSE, panSW, panSW, panW, panW, setCenter, setCenter, setHeight, setMaxScale, setMinScale, setParms, setPlanetRadius, setPPM, setProjectionID, setScale, setWidth, wrap_longitude

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.bbn.openmap.proj.Projection

forward, forward, forwardArc, forwardCircle, forwardLine, forwardPoly, forwardRaster, forwardRaw, forwardRect, getCenter, getHeight, getLowerRight, getMaxScale, getMinScale, getProjectionID, getProjectionType, getScale, getScale, getUpperLeft, getWidth, inverse, inverse, isPlotable, makeClone, pan, pan

Field Detail

LLXYViewName

public static final transient java.lang.String LLXYViewName

The LLXY name.

See Also:

Constant Field Values

LLXYViewType

public static final transient int LLXYViewType

The LLXY type of projection.

See Also:

Constant Field Values

uCtr

protected LatLonPoint uCtr

User-Space Center in lat/lon

uCtrLat

protected float uCtrLat

uCtrLon

protected float uCtrLon

sCtrX

protected int sCtrX

Screen Origin in pixels (center=0,0)

sCtrY

protected int sCtrY

Screen Origin in pixels (center=0,0)

uCtrX

protected int uCtrX

User Origin in pixels 0,0 = lat/lon center

uCtrY

protected int uCtrY

dUSX

protected int dUSX

dUSY

protected int dUSY

delta between U and S, X axis

Constructor Detail

LLXYView

public LLXYView(LatLonPoint center,
                float scale,
                int width,
                int height)

Construct a LLXY projection.

Parameters:

center - LatLonPoint center of projection

scale - float scale of projection

width - width of screen

height - height of screen

Method Detail

toString

public java.lang.String toString()

Return stringified description of this projection.

Overrides:

toString in class LLXY

Returns:

String

See Also:

Projection.getProjectionID()

computeParameters

protected void computeParameters()

Called when some fundamental parameters change.

Each projection will decide how to respond to this change. For instance, they may need to recalculate "constant" paramters used in the forward() and inverse() calls.

Overrides:

computeParameters in class LLXY

forward

public java.awt.Point forward(LatLonPoint pt,
                              java.awt.Point p)

Projects a point from Lat/Lon space to X/Y space.

Specified by:

forward in interface Projection

Overrides:

forward in class LLXY

Parameters:

pt - LatLonPoint

p - Point retval

Returns:

Point p

forward

public java.awt.Point forward(float lat,
                              float lon,
                              java.awt.Point p)

Forward projects a lat,lon coordinates.

Specified by:

forward in interface Projection

Overrides:

forward in class LLXY

Parameters:

lat - raw latitude in decimal degrees

lon - raw longitude in decimal degrees

p - Resulting XY Point

Returns:

Point p

forward

public java.awt.Point forward(float lat,
                              float lon,
                              java.awt.Point p,
                              boolean isRadian)

Forward projects lat,lon into XY space and returns a Point.

Specified by:

forward in interface Projection

Overrides:

forward in class LLXY

Parameters:

lat - float latitude in radians

lon - float longitude in radians

p - Resulting XY Point

isRadian - bogus argument indicating that lat,lon arguments are in radians

Returns:

Point p

inverse

public LatLonPoint inverse(java.awt.Point pt,
                           LatLonPoint llp)

Inverse project a Point.

Specified by:

inverse in interface Projection

Overrides:

inverse in class LLXY

Parameters:

pt - x,y Point

llp - resulting LatLonPoint

Returns:

LatLonPoint llp

inverse

public LatLonPoint inverse(int x,
                           int y,
                           LatLonPoint llp)

Inverse project x,y coordinates into a LatLonPoint.

Specified by:

inverse in interface Projection

Overrides:

inverse in class LLXY

Parameters:

x - integer x coordinate

y - integer y coordinate

llp - LatLonPoint

Returns:

LatLonPoint llp

See Also:

Proj.inverse(Point)