public class TLcdAltitudeMatrixViewFactory extends Object
Creates ILcdAltitudeMatrixView
objects representing a shape discretization with an
altitude value for each discretized point.
Constructor and Description 

TLcdAltitudeMatrixViewFactory()
Constructs a new altitude matrix view factory.

Modifier and Type  Method and Description 

void 
addStatusListener(ILcdStatusListener aStatusListener)
Starts notifying a listener with the progress of the visibility calculations.

ILcdAltitudeMatrixView 
createAreaAltitudeMatrixView(ILcdShape aShape,
ILcdGeoReference aShapeReference,
ILcdAltitudeProvider aAltitudeProvider,
double aStepSize,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified shape that can be used to
compute a visibility. 
ILcdAltitudeMatrixView 
createAreaAltitudeMatrixView(ILcdShape aShape,
ILcdGeoReference aShapeReference,
ILcdAltitudeProvider aAltitudeProvider,
ILcdRaster aRaster,
ILcdGeoReference aRasterReference,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified shape that can be used to
compute a visibility. 
ILcdAltitudeMatrixView 
createInterpolatedPathAltitudeMatrixView(ILcdPolyline aPolyline,
ILcdGeoReference aPolylineReference,
double aStepSize,
TLcdLineType aLineType,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified polyline that can be used to
compute a visibility. 
ILcdAltitudeMatrixView 
createPathAltitudeMatrixView(ILcdCurve aCurve,
ILcdGeoReference aCurveReference,
double aStepSize,
TLcdCoverageAltitudeMode aAltitudeMode,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified curve using the height values of the points of the curve. 
ILcdAltitudeMatrixView 
createPathAltitudeMatrixView(ILcdCurve aCurve,
ILcdGeoReference aCurveReference,
ILcdAltitudeProvider aAltitudeProvider,
double aStepSize,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified curve that can be used to
compute a visibility. 
ILcdAltitudeMatrixView 
createPathAltitudeMatrixView(ILcdPolyline aPolyline,
ILcdGeoReference aPolylineReference,
ILcdAltitudeProvider aAltitudeProvider,
double aStepSize,
TLcdLineType aLineType,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified polyline that can be used to
compute a visibility. 
ILcdAltitudeMatrixView 
createPointAltitudeMatrixView(ILcdPoint aPoint,
ILcdGeoReference aPointReference,
double aPointAltitude,
TLcdCoverageAltitudeMode aPointAltitudeMode,
TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor,
ILcdGeoReference aAltitudeMatrixViewReference)
Creates an
ILcdAltitudeMatrixView for the specified point that can be used to
compute a visibility. 
void 
removeStatusListener(ILcdStatusListener aStatusListener)
Terminates notifying a listener of the progress of the visibility calculations.

public TLcdAltitudeMatrixViewFactory()
public void addStatusListener(ILcdStatusListener aStatusListener)
aStatusListener
 will be notified of progress of the visibility calculations.removeStatusListener(ILcdStatusListener)
public void removeStatusListener(ILcdStatusListener aStatusListener)
aStatusListener
 will no longer be notified of progress of the visibility calculations.addStatusListener(ILcdStatusListener)
public ILcdAltitudeMatrixView createPointAltitudeMatrixView(ILcdPoint aPoint, ILcdGeoReference aPointReference, double aPointAltitude, TLcdCoverageAltitudeMode aPointAltitudeMode, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException
Creates an ILcdAltitudeMatrixView
for the specified point that can be used to
compute a visibility. The method returns a 1x1 matrix containing the specified altitude
value. If the ABOVE_OBJECT
altitude mode is
used, the specified altitude is transformed, using the points Z coordinate, to a value
above ellipsoid. This value is then set as matrix value.
The specified altitude mode also defines the altitude mode of the resulting matrix view.
If the altitude mode ABOVE_OBJECT
is used, the altitude mode of the resulting
matrix will be ABOVE_GEOID
.
Note that, if the point cannot be transformed to the specified matrix view reference,
an TLcdOutOfBoundsException
will be thrown.
aPoint
 The point to create the matrix view for.aPointReference
 The reference in which the point is defined.aPointAltitude
 The altitude value for the given point.aPointAltitudeMode
 Indicates how the altitude should be interpreted.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.TLcdOutOfBoundsException
 if the point transformation fails.public ILcdAltitudeMatrixView createPathAltitudeMatrixView(ILcdPolyline aPolyline, ILcdGeoReference aPolylineReference, ILcdAltitudeProvider aAltitudeProvider, double aStepSize, TLcdLineType aLineType, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException
Creates an ILcdAltitudeMatrixView
for the specified polyline that can be used to
compute a visibility. The specified step size defines the distance (in meters) between
consecutive generated points on the polyline. The method returns a 1xN matrix filled with
values retrieved from the specified altitude provider. The altitude mode of the resulting
matrix view is defined by the altitude mode of the specified altitude provider.
This method will discretize the polyline in the polyline reference. Each discretized point
is converted to the matrix view reference to be used as associated point coordinate. For
each converted point, the altitude provider is called to find the altitude value needed to
initialize the altitude matrix view. Note that, if a point transformation fails, the method
throws an TLcdOutOfBoundsException
.
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread can be
interrupted before the matrix is created. In this case, null
shall be returned.
The line type
defines how a polyline needs to be discretized. Due to
the fact that the discretization of the polyline is done in the polyline reference, the
line type strongly depends on the reference of the polyline. The following combinations are
supported:
line reference  line type  

ILcdGeodeticReference  +  GEODETIC 
ILcdGeodeticReference  +  RHUMBLINE 
ILcdGridReference  +  CARTESIAN 
IllegalArgumentException
will be
thrown. Note that a NullPointerException
is thrown when the line type is
null
.
The following image gives a visual explanation of this altitude matrix view. The gray dots are the polyline points, the green dots the generated points on the polyline. The matrix view will contain an altitude value for the green and gray dots.
aPolyline
 The polyline to create the matrix view for.aPolylineReference
 The reference in which the polyline is defined.aAltitudeProvider
 The altitude provider for the given polyline.aStepSize
 The step size used while scanning the polyline.aLineType
 Indicates how to interpolate the polyline.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.IllegalArgumentException
 if the line type and the polyline reference do not match.NullPointerException
 if the line type is null
.TLcdOutOfBoundsException
 if a point transformation fails.public ILcdAltitudeMatrixView createPathAltitudeMatrixView(ILcdCurve aCurve, ILcdGeoReference aCurveReference, ILcdAltitudeProvider aAltitudeProvider, double aStepSize, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException
Creates an ILcdAltitudeMatrixView
for the specified curve that can be used to
compute a visibility. The specified step size defines the distance (in meters) between
consecutive generated points on the curve. The method returns a 1xN matrix filled with
values retrieved from the specified altitude provider. The altitude mode of the resulting
matrix view is defined by the altitude mode of the specified altitude provider.
This method will discretize the curve in the reference of the curve. Each discretized point
is converted to the matrix view reference to be used as associated point coordinate. For
each converted point, the altitude provider is called to find the altitude value needed to
initialize the altitude matrix view. Note that, if a point transformation fails, the method
throws an TLcdOutOfBoundsException
.
If the specified curve implements ILcdCompositeCurve
, a composite altitude matrix
view is created combining an altitude matrix view for each curve in the composite curve.
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread can be
interrupted before the matrix is created. In this case, null
shall be returned.
aCurve
 The curve to create the matrix view for.aCurveReference
 The reference in which the curve is defined.aAltitudeProvider
 The altitude provider for the given curve.aStepSize
 The step size used while scanning the curve.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.TLcdOutOfBoundsException
 if a point transformation fails.public final ILcdAltitudeMatrixView createPathAltitudeMatrixView(ILcdCurve aCurve, ILcdGeoReference aCurveReference, double aStepSize, TLcdCoverageAltitudeMode aAltitudeMode, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException
Creates an ILcdAltitudeMatrixView
for the specified curve using the height values of the points of the curve.
This matrix view can be used to compute a visibility. The specified step size defines the distance (in meters) between
consecutive generated points on the curve. The method returns a 1xN matrix filled with
values retrieved where the height is retrieved from the curve. The altitude mode of the resulting
matrix view is defined by the altitude mode of the specified altitude provider.
This method will discretize the curve in the reference of the curve. Each discretized point
is converted to the matrix view reference to be used as associated point coordinate.
Note that, if a point transformation fails, the method throws an TLcdOutOfBoundsException
.
If the specified curve implements ILcdCompositeCurve
, a composite altitude matrix
view is created combining an altitude matrix view for each curve in the composite curve.
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread can be
interrupted before the matrix is created. In this case, null
shall be returned.
aCurve
 The curve to create the matrix view for.aCurveReference
 The reference in which the curve is defined.aStepSize
 The step size used while scanning the curve.aAltitudeMode
 The altitude mode defining how the zvalues of the curve points must be interpretedaAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.TLcdOutOfBoundsException
 if a point transformation fails.public ILcdAltitudeMatrixView createInterpolatedPathAltitudeMatrixView(ILcdPolyline aPolyline, ILcdGeoReference aPolylineReference, double aStepSize, TLcdLineType aLineType, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException
Creates an ILcdAltitudeMatrixView
for the specified polyline that can be used to
compute a visibility. The specified step size defines the distance (in meters) between
consecutive generated points on the polyline. The method returns a 1xN matrix filled with
values along the interpolated path between the polyline points. The altitude mode of the
resulting matrix view is TLcdCoverageAltitudeMode.ABOVE_GEOID
.
This method will discretize the polyline in the polyline reference. Each discretized point
is converted to the matrix view reference to be used as associated point coordinate. For
each discretized point on the polyline segment defined by point A and point B, the altitude
value is calculated as the interpolated value between the Z coordinates of point A and point
B. The value is interpreted as above ellipsoid. This means that the Zcoordinates of the
points are assumed to be defined as above ellipsoid. The altitude value is used to initialize
the altitude matrix view. Note that, if a point transformation fails, the method throws an
TLcdOutOfBoundsException
.
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread can be
interrupted before the matrix is created. In this case, null
shall be returned.
The line type
defines how a polyline needs to be discretized. Due to
the fact that the discretization of the polyline is done in the polyline reference, the
line type strongly depends on the reference of the polyline. The following combinations are
supported:
line reference  line type  

ILcdGeodeticReference  +  GEODETIC 
ILcdGeodeticReference  +  RHUMBLINE 
ILcdGridReference  +  CARTESIAN 
IllegalArgumentException
will be
thrown. Note that a NullPointerException
is thrown when the line type is
null
.
The following image gives a visual explanation of this altitude matrix view. The gray dots are the polyline points, the green dots the generated points on the polyline. The matrix view will contain an altitude value for the green and gray dots.
aPolyline
 The polyline to create the matrix view for.aPolylineReference
 The reference in which the polyline is defined.aStepSize
 The step size used while scanning the polyline.aLineType
 Indicates how to interpolate the polyline.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.IllegalArgumentException
 if the line type and the polyline reference do not match.NullPointerException
 if the line type is null
.TLcdOutOfBoundsException
 if a point transformation fails.public ILcdAltitudeMatrixView createAreaAltitudeMatrixView(ILcdShape aShape, ILcdGeoReference aShapeReference, ILcdAltitudeProvider aAltitudeProvider, double aStepSize, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException, TLcdNoBoundsException
Creates an ILcdAltitudeMatrixView
for the specified shape that can be used to
compute a visibility. The specified step size defines the distance (in meters) between
consecutive generated points inside the shape bounds. The method returns a NxM matrix
filled with values retrieved from the specified altitude provider. The altitude mode
of the resulting matrix view is defined by the altitude mode of the specified altitude
provider.
This method will convert the shape bounds to the matrix view reference. If this fails,
an TLcdNoBoundsException
is thrown. The converted bounds are discretized
in the matrix view reference. Each discretized point is used as associated point and
is converted back to the shape reference to check if it is contained by the shape or
not. If this transformation fails, an TLcdOutOfBoundsException
is thrown.
For discretized points inside the shape, the altitude provider is called to find the
altitude value needed to initialize the altitude matrix view. For points outside the
shape, the matrix view altitude descriptor is used to find the special altitude value
corresponding to the interpretation TLcdAltitudeInterpretation.OUTSIDE_SHAPE
.
Note that, because a line shape (for example a polyline) does not have an area, there will not be enough discretization points to represent the line shape. Almost all points will lie outside the shape which makes the result in general useless. This method is therefor only usable for area shapes like polygons, arc bands, ...
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread cannot be
interrupted before the matrix is created.
The following image gives a visual explanation of this altitude matrix view. The green dots represent pixels inside the shape, the red dots are pixels outside the shape. The altitude provider is responsible for setting special values for points outside the shape.
aShape
 The shape to create the matrix view for.aShapeReference
 The reference in which the shape is defined.aAltitudeProvider
 The altitude provider for the given shape.aStepSize
 The step size used while scanning the shape.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.TLcdOutOfBoundsException
 if a point transformation fails.TLcdNoBoundsException
 if the bounds transformation fails.public ILcdAltitudeMatrixView createAreaAltitudeMatrixView(ILcdShape aShape, ILcdGeoReference aShapeReference, ILcdAltitudeProvider aAltitudeProvider, ILcdRaster aRaster, ILcdGeoReference aRasterReference, TLcdAltitudeDescriptor aAltitudeMatrixViewDescriptor, ILcdGeoReference aAltitudeMatrixViewReference) throws TLcdOutOfBoundsException, TLcdNoBoundsException
Creates an ILcdAltitudeMatrixView
for the specified shape that can be used to
compute a visibility. The method returns a NxM matrix filled with values retrieved from
the specified altitude provider. The shape is discretized in a way that each pixel from
the raster corresponds to a pixel in the matrix view. Each matrix pixel corresponds to
the center of the raster pixel. The altitude mode of the resulting matrix view is defined
by the altitude mode of the specified altitude provider.
This method will convert the shape bounds to the matrix view reference. If this fails,
an TLcdNoBoundsException
is thrown. The converted bounds are discretized
in the matrix view reference. Each discretized point is used as associated point and
is converted back to the shape reference to check if it is contained by the shape or
not. If this transformation fails, an TLcdOutOfBoundsException
is thrown.
For discretized points inside the shape, the altitude provider is called to find the
altitude value needed to initialize the altitude matrix view. For points outside the
shape, the matrix view altitude descriptor is used to find the special altitude value
corresponding to the interpretation TLcdAltitudeInterpretation.OUTSIDE_SHAPE
.
Note that, because a line shape (for example a polyline) does not have an area, there will not be enough discretization points to represent the line shape. Almost all points will lie outside the shape which makes the result in general useless. This method is therefor only usable for area shapes like polygons, arc bands, ...
This implementation requires that both raster and matrix view references are equal. If
not, an IllegalArgumentException
will be thrown.
Note that, when the current thread is interrupted, the method will return the intermediate
result. Processed points are initialized with the altitude value from the altitude provider.
The other points are set to the unknown altitude value, corresponding to the interpretation
UNKNOWN_ELEVATION
. The thread cannot be
interrupted before the matrix is created.
The following image gives a visual explanation of this altitude matrix view. The green dots represent pixels inside the shape, the red dots are pixels outside the shape. The altitude provider is responsible for setting special values for points outside the shape.
aShape
 The shape to create the matrix view for.aShapeReference
 The reference in which the shape is defined.aAltitudeProvider
 The altitude provider for the given shape.aRaster
 The raster used to discretize the shape.aRasterReference
 The reference in which the raster is defined.aAltitudeMatrixViewDescriptor
 Indicating to which special values the altitude
interpretations should be mapped and vice versa.aAltitudeMatrixViewReference
 The reference in which the associated points of
the created matrix view are defined.IllegalArgumentException
 if the given raster and matrix view references are not equal.TLcdOutOfBoundsException
 if a point transformation fails.TLcdNoBoundsException
 if the bounds transformation fails.