public class TLcdVerticalPerspective extends ALcdPerspective
The vertical perspective projection is an azimuthal projection with characteristics the origin of the projection and the point of perspective. The origin height is taken into account.
true
.
ILcdProjection projection =
new TLcdVerticalPerspective(40.0, -100.0, 0.0, 2.0);
The equations of the vertical perspective projection are taken from [Snyder1987].
The point of perspective has to be outside the earth ellipsoid.
So, its value should be outside the closed interval [-1.0,1.0].
fPropertyChangeDispatcher
EPSILON
Constructor and Description |
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TLcdVerticalPerspective()
Constructs a vertical perspective projection with the origin
at a point
(0.0, 0.0, 0.0) and the perspective
distance at 2.0. |
TLcdVerticalPerspective(double aLongitude,
double aLatitude,
double aHeight,
double aPerspectiveDistance)
Constructs a vertical perspective projection with the origin
at a point
(aLatitude, aLongitude, aHeight) . |
TLcdVerticalPerspective(ILcdPoint aOrigin,
double aPerspectiveDistance)
Constructs a vertical perspective projection with the origin at an
ILcdPoint aOrigin and a point of perspective at
a distance (divided by the semi-major axis) from the center of the earth. |
Modifier and Type | Method and Description |
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double[][] |
boundaryLats(double aLon)
Default implementation.
|
double[][] |
boundaryLons(double aLat)
Default implementation.
|
protected void |
calculateCachedValues()
Constants based on the longitude, latitude, height of the point of origin
of projection and the distance of the point of perspective don't have to be
recalculated every time a method is called.
|
Object |
clone()
Makes a deep clone of this
ILcdProjection . |
boolean |
inLonLatBounds(ILcdPoint aLLP)
Checks if an
ILcdPoint is inside the valid area of geodetic
coordinates of the projection. |
boolean |
inWorldBoundsOnSphere(ILcdPoint aXYPoint,
double aRadius)
Checks if a
ILcdPoint is inside the valid cartesian area of
the projection. |
boolean |
isAllInBounds()
If all geodetic coordinates (l ,j ) are projected (visible) by an
ILcdProjection
and all (x,y ) coordinates are bounded this is true . |
void |
lonlatheight2worldOnEllipsoidSFCT(ILcdPoint aLLHP,
ILcdEllipsoid aEllipsoid,
ILcd2DEditablePoint aWorldPoint)
Default implementation calls
lonlatheight2worldOnEllipsoidSFCT
with aEllipsoid.getAuxRadius() as sphere radius. |
void |
lonlatheight2worldOnSphereSFCT(ILcdPoint aLLHP,
double aRadius,
ILcd2DEditablePoint aWorldPoint)
Transforms an
ILcd2DEditablePoint on a sphere into the
cartesian coordinate system of the projection. |
String |
toString()
Returns the
String representation of the vertical perspective projection. |
void |
world2DEditableBoundsOnSphereSFCT(double aRadius,
ILcd2DEditableBounds aWorldBound)
The projection is bounded when the perspective distance is outside the
closed interval [-1,1].
|
void |
world2lonlatOnEllipsoidSFCT(ILcdPoint aXYPoint,
ILcdEllipsoid aEllipsoid,
ILcd2DEditablePoint aLLPSFCT)
Transforms a world point to a LonLatHeightPoint.
|
void |
world2lonlatOnSphereSFCT(ILcdPoint aXYPoint,
double aRadius,
ILcd2DEditablePoint aLLPSFCT)
Transforms an
ILcdPoint from the cartesian coordinate system
of the projection into an ILcd2DEditablePoint onto a sphere. |
equals, getOrigin, getOriginHeight, getOriginLat, getOriginLon, getPerspectiveDistance, hashCode, isContinuous, loadProperties, setOriginHeight, setOriginLat, setOriginLon, setPerspectiveDistance, writePropertiesSFCT
addPropertyChangeListener, firePropertyChangeEvent, inWorldBoundsOnEllipsoid, removePropertyChangeListener, world2DEditableBoundsOnEllipsoidSFCT
finalize, getClass, notify, notifyAll, wait, wait, wait
inWorldBoundsOnEllipsoid, world2DEditableBoundsOnEllipsoidSFCT
addPropertyChangeListener, removePropertyChangeListener
public TLcdVerticalPerspective()
(0.0, 0.0, 0.0)
and the perspective
distance at 2.0.public TLcdVerticalPerspective(double aLongitude, double aLatitude, double aHeight, double aPerspectiveDistance)
(aLatitude, aLongitude, aHeight)
.aLongitude
- longitude of the origin of the projection,
in decimal degrees.aLatitude
- latitude of the origin of the projection,
in decimal degrees.aHeight
- height of the origin point above the ellipsoid.aPerspectiveDistance
- distance of the point of perspective
from the center of the earth globe divided by the semi-major axis.public TLcdVerticalPerspective(ILcdPoint aOrigin, double aPerspectiveDistance)
ILcdPoint
aOrigin
and a point of perspective at
a distance (divided by the semi-major axis) from the center of the earth.aOrigin
- the point of origin for the projection (lon,lat,height).aPerspectiveDistance
- distance of the point of perspective
from the center of the earth globe divided by the semi-major axis.protected void calculateCachedValues()
ALcdPerspective
calculateCachedValues
in class ALcdPerspective
public boolean isAllInBounds()
ILcdProjection
ILcdProjection
and all (x,y ) coordinates are bounded this is true
.
All ILcdProjection
objects have bounded (x,y )
coordinates because the projection is cut off if necessary.true
if all LonLatPoints are within the bounds of
the projection, false
otherwise.public void lonlatheight2worldOnSphereSFCT(ILcdPoint aLLHP, double aRadius, ILcd2DEditablePoint aWorldPoint) throws TLcdOutOfBoundsException
ILcdProjection
ILcd2DEditablePoint
on a sphere into the
cartesian coordinate system of the projection.aLLHP
- point to be projected.aRadius
- radius of the sphere (meters).aWorldPoint
- projected point as side effect.TLcdOutOfBoundsException
- If the
ILcdPoint
aLLHP
is not within the valid area
of the projection (visible area), then this exception is thrown.public void lonlatheight2worldOnEllipsoidSFCT(ILcdPoint aLLHP, ILcdEllipsoid aEllipsoid, ILcd2DEditablePoint aWorldPoint) throws TLcdOutOfBoundsException
ALcdProjection
lonlatheight2worldOnEllipsoidSFCT
with aEllipsoid.getAuxRadius()
as sphere radius.lonlatheight2worldOnEllipsoidSFCT
in interface ILcdProjection
lonlatheight2worldOnEllipsoidSFCT
in class ALcdProjection
aLLHP
- point to be projected.aEllipsoid
- ellipsoid on which the point is defined.aWorldPoint
- projected point as side effect.TLcdOutOfBoundsException
- If the
ILcdPoint
aLLHP
is not within the valid area
of the projection (visible area), then this exception is thrown.public void world2lonlatOnSphereSFCT(ILcdPoint aXYPoint, double aRadius, ILcd2DEditablePoint aLLPSFCT) throws TLcdOutOfBoundsException
ILcdProjection
ILcdPoint
from the cartesian coordinate system
of the projection into an ILcd2DEditablePoint
onto a sphere.aXYPoint
- projected point for which the corresponding geodetic point is sought.aRadius
- radius of the sphere (meters).aLLPSFCT
- resulting geodetic coordinate as side effect.TLcdOutOfBoundsException
- If the
ILcdPoint
aXYPoint
is not within the valid
area of the projection (visible area), then this exception is thrown.public void world2lonlatOnEllipsoidSFCT(ILcdPoint aXYPoint, ILcdEllipsoid aEllipsoid, ILcd2DEditablePoint aLLPSFCT) throws TLcdOutOfBoundsException
aLLPSFCT
.world2lonlatOnEllipsoidSFCT
in interface ILcdProjection
world2lonlatOnEllipsoidSFCT
in class ALcdProjection
aXYPoint
- projected point for which the corresponding geodetic point is sought.aEllipsoid
- ellipsoid on which the geodetic coordinate is defined.aLLPSFCT
- resulting geodetic coordinate as side effect.TLcdOutOfBoundsException
- If the
ILcdPoint
aXYPoint
is not within the valid
area of the projection (visible area), then this exception is thrown.public boolean inLonLatBounds(ILcdPoint aLLP)
ILcdProjection
ILcdPoint
is inside the valid area of geodetic
coordinates of the projection. The valid area is determined by the
LonLatPoints that are visible and for which the corresponding cartesian
coordinate is within the boundaries.aLLP
- ILcdPoint
to be checked upon.true
if valid, false
if invalid.public double[][] boundaryLons(double aLat)
ALcdProjection
boundaryLons
in interface ILcdProjection
boundaryLons
in class ALcdProjection
aLat
- latitude in decimal degrees and -90.0 <= aLat
<= 90.0.public double[][] boundaryLats(double aLon)
ALcdProjection
boundaryLats
in interface ILcdProjection
boundaryLats
in class ALcdProjection
aLon
- longitude in decimal degrees -180.0 <= lon <= 180.0 .public void world2DEditableBoundsOnSphereSFCT(double aRadius, ILcd2DEditableBounds aWorldBound)
aRadius
- radius of the sphere.aWorldBound
- the bounds of the projection in world coordinates as side effect.public boolean inWorldBoundsOnSphere(ILcdPoint aXYPoint, double aRadius)
ILcdProjection
ILcdPoint
is inside the valid cartesian area of
the projection. The valid cartesian area is determined naturally by the
projection bounds or by an artificial introduced boundary limit because
some cartesian points are at infinity. The shape of the valid cartesian
area is in many cases rectangular or circular although it might be more
complex.aXYPoint
- point to be checked upon.aRadius
- radius of the sphere.true
if valid, false
if invalid.public String toString()
String
representation of the vertical perspective projection.toString
in interface ILcdProjection
toString
in class Object
String
representation of the vertical perspective projection.public Object clone()
ILcdProjection
ILcdProjection
.clone
in interface ILcdProjection
clone
in class ALcdPerspective
ILcdProjection
.