Class TLcdLonLatPolygon
- All Implemented Interfaces:
ILcdBounded
,ILcdCurve
,ILcdPointList
,ILcdPointList2
,ILcdPolygon
,ILcdPolypoint
,ILcdRing
,ILcdShape
,ILcd2DEditablePointList
,ILcd2DEditablePolygon
,ILcd2DEditablePolypoint
,ILcd2DEditableShape
,ILcdCache
,ILcdCloneable
,ILcdInvalidateable
,Serializable
,Cloneable
- Direct Known Subclasses:
TLcdLonLatMPolygon
ILcd2DEditablePolygon
in the geodetic
space. In addition to the properties defined by ILcd2DEditablePolygon
, a
TLcdLonLatPolygon
has an ellipsoid on which it lives. All longitude/latitude coordinates are expressed in degrees.
This class is thread-safe for concurrent read-only access of its contents. For read-write access, external locking must be used. Such locking is typically done at the model level.
Note that the ILcd2DEditablePointList representing the actual geometry should provide geodetic points (TLcdLonLatPoint), not cartesian (TLcdXYPoint).
- See Also:
-
Field Summary
Fields inherited from class com.luciad.shape.shape2D.ALcd2DEditablePolypoint
fBounds, fFocusPoint
Fields inherited from interface com.luciad.shape.ILcdCurve
INTERPOLATION_CIRCLE_BY_3POINTS, INTERPOLATION_CIRCLE_BY_CENTERPOINT, INTERPOLATION_CIRCULARARC_BY_3POINTS, INTERPOLATION_CIRCULARARC_BY_BULGE, INTERPOLATION_CIRCULARARC_BY_CENTERPOINT, INTERPOLATION_ELLIPTICAL, INTERPOLATION_GEODESIC, INTERPOLATION_LINEAR, INTERPOLATION_MIXED, INTERPOLATION_RHUMB
Fields inherited from interface com.luciad.shape.ILcdPolygon
CLOCKWISE, COUNTERCLOCKWISE, INVALID_ORIENTATION
-
Constructor Summary
ConstructorDescriptionCreates an empty polygon on a default (WGS 84) ellipsoid.TLcdLonLatPolygon
(ILcd2DEditablePointList a2DEditablePointList) Creates a polygon using the given point list.TLcdLonLatPolygon
(ILcd2DEditablePointList a2DEditablePointList, ILcdEllipsoid aEllipsoid) Creates a polygon using the given point list.TLcdLonLatPolygon
(TLcdLonLatPolygon aLonLatPolygon, boolean aDeepCopy) Creates a polygon based on another polygon. -
Method Summary
Modifier and TypeMethodDescriptionprotected void
Computes the bounds of the polypoint.clone()
Creates and returns a copy of this object.void
computePointSFCT
(double aParam, ILcd3DEditablePoint aPointSFCT) Computes a point of the curve, defined by the given parameter.boolean
contains2D
(double aLon, double aLat) Checks whether thisILcdShape
contains the given point in the 2D space.boolean
contains2D
(ILcdPoint aPoint) The implementation of the method is based on a spherical approximation.Get the ellipsoid used for this polygon.Retrieves the end point of the curve.double
Returns the angle of the curve's tangent at the end point, in degrees counterclockwise from the direction at 3 o'clock.Returns the interpolation method used by this curve.double
getLength2D
(double aParam1, double aParam2) Returns the length between two points of the curve, defined by the given parameters.int
Returns the number of intersections between this curve and a line segment defined by the two specified points.int
Returns the orientation of thisILcdPolygon
:ILcdPolygon.CLOCKWISE
orILcdPolygon.COUNTERCLOCKWISE
.Retrieves the start point of the curve.double
Returns the angle of the curve's tangent at the start point, in degrees counterclockwise from the direction at 3 o'clock.double
getTangent2D
(double aParam) Returns the angle of the curve's tangent in the point defined by the given parameter, in degrees counterclockwise from the direction at 3 o'clock.void
insert2DPoint
(int aIndex, double aX, double aY) Inserts a point at the given index into thisILcd2DEditablePointList
.void
move2DPoint
(int aIndex, double aX, double aY) Moves the specified point of thisILcd2DEditablePointList
to the given point in the 2D space.void
removePointAt
(int aIndex) Removes the point at the given index from thisILcd2DEditablePointList
.void
set2DEditablePointList
(ILcd2DEditablePointList a2DEditablePointList) void
setEllipsoid
(ILcdEllipsoid aEllipsoid) Set the ellipsoid used for this polygon.final void
setOrientation
(int aOrientation) Sets the orientation of thisILcd2DEditablePolygon
.void
translate2DPoint
(int aIndex, double aDeltaX, double aDeltaY) Translates the specified point of thisILcd2DEditablePointList
from its current position over the given translation vector in the 2D space.Methods inherited from class com.luciad.shape.shape2D.TLcdLonLatPolypoint
calculateFocusPoint
Methods inherited from class com.luciad.shape.shape2D.ALcd2DEditablePolypoint
clearCache, equals, get2DEditablePointList, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, getPointSFCT, getX, getY, getZ, hashCode, insertIntoCache, invalidateBounds, invalidateObject, move2D, removeCachedObject, setFocusPoint, toString, translate2D
Methods inherited from class com.luciad.shape.shape2D.ALcd2DEditableShape
contains3D, move2D
Methods inherited from class com.luciad.shape.ALcdShape
contains3D, fromDomainObject
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface com.luciad.shape.shape2D.ILcd2DEditablePointList
append2DPoint, translate2D
Methods inherited from interface com.luciad.shape.shape2D.ILcd2DEditableShape
move2D, move2D, translate2D
Methods inherited from interface com.luciad.shape.ILcdBounded
getBounds
Methods inherited from interface com.luciad.util.ILcdCache
clearCache, getCachedObject, insertIntoCache, removeCachedObject
Methods inherited from interface com.luciad.shape.ILcdPointList
getPoint, getPointCount, getPointSFCT, getX, getY, getZ
Methods inherited from interface com.luciad.shape.ILcdShape
contains3D, contains3D, getFocusPoint
-
Constructor Details
-
TLcdLonLatPolygon
public TLcdLonLatPolygon()Creates an empty polygon on a default (WGS 84) ellipsoid. -
TLcdLonLatPolygon
Creates a polygon using the given point list.- The point list and the points therein are not copied, and can be modified by this object
- The point list should contain
TLcdLonLatPoint
s
- Parameters:
a2DEditablePointList
- A point list containing lon-lat points.
-
TLcdLonLatPolygon
Creates a polygon using the given point list.- The point list and the points therein are not copied, and can be modified by this object
- The point list should contain
TLcdLonLatPoint
s
- Parameters:
a2DEditablePointList
- A point list containing lon-lat points.aEllipsoid
- the ellipsoid on which to define the polygon
-
TLcdLonLatPolygon
Creates a polygon based on another polygon.-
When
aDeepCopy
is true, and the given polygon has a cloneable pointlist (seeILcdCloneable
, for exampleTLcd2DEditablePointList
), the underlying points will be cloned. - Otherwise, the underlying pointlist is re-used by the new polygon, and updates affect both polygons.
- Parameters:
aLonLatPolygon
- The polygon to copyaDeepCopy
- whether to make a copy of the points, if possible
-
When
-
-
Method Details
-
getEllipsoid
Get the ellipsoid used for this polygon.- Returns:
- the ellipsoid using for this polygon
-
setEllipsoid
Set the ellipsoid used for this polygon.- Parameters:
aEllipsoid
- the new ellipsoid
-
getOrientation
public int getOrientation()Description copied from interface:ILcdPolygon
Returns the orientation of thisILcdPolygon
:ILcdPolygon.CLOCKWISE
orILcdPolygon.COUNTERCLOCKWISE
.- Specified by:
getOrientation
in interfaceILcdPolygon
- Returns:
- the orientation of this
ILcdPolygon
:ILcdPolygon.CLOCKWISE
orILcdPolygon.COUNTERCLOCKWISE
. This method should not returnINVALID_ORIENTATION
, which is only to be used for resetting the orientation so that it can be recalculated.
-
setOrientation
public final void setOrientation(int aOrientation) Sets the orientation of thisILcd2DEditablePolygon
.Note: modifying the geometry of this polygon or modifying the ellipsoid
setEllipsoid(com.luciad.geodesy.ILcdEllipsoid)
will clear the orientation.- Specified by:
setOrientation
in interfaceILcd2DEditablePolygon
- Parameters:
aOrientation
-ILcd2DEditablePolygon.CLOCKWISE
,ILcd2DEditablePolygon.COUNTERCLOCKWISE
orILcd2DEditablePolygon.INVALID_ORIENTATION
.
-
set2DEditablePointList
- Overrides:
set2DEditablePointList
in classALcd2DEditablePolypoint
-
move2DPoint
public void move2DPoint(int aIndex, double aX, double aY) Description copied from interface:ILcd2DEditablePointList
Moves the specified point of thisILcd2DEditablePointList
to the given point in the 2D space. Only the first two dimensions of theILcdShape
are considered. The third dimension is left unchanged.- Specified by:
move2DPoint
in interfaceILcd2DEditablePointList
- Overrides:
move2DPoint
in classALcd2DEditablePolypoint
- Parameters:
aIndex
- a valid index in the list of points.aX
- the x coordinate of the point.aY
- the y coordinate of the point.
-
translate2DPoint
public void translate2DPoint(int aIndex, double aDeltaX, double aDeltaY) Description copied from interface:ILcd2DEditablePointList
Translates the specified point of thisILcd2DEditablePointList
from its current position over the given translation vector in the 2D space. Only the first two dimensions of the points are considered. The third dimension is left unchanged.- Specified by:
translate2DPoint
in interfaceILcd2DEditablePointList
- Overrides:
translate2DPoint
in classALcd2DEditablePolypoint
- Parameters:
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.
-
insert2DPoint
public void insert2DPoint(int aIndex, double aX, double aY) Description copied from interface:ILcd2DEditablePointList
Inserts a point at the given index into thisILcd2DEditablePointList
.- Specified by:
insert2DPoint
in interfaceILcd2DEditablePointList
- Overrides:
insert2DPoint
in classALcd2DEditablePolypoint
- Parameters:
aIndex
- a valid new index in the list of points.aX
- the x coordinate of the new point.aY
- the y coordinate of the new point.
-
removePointAt
public void removePointAt(int aIndex) Description copied from interface:ILcd2DEditablePointList
Removes the point at the given index from thisILcd2DEditablePointList
.- Specified by:
removePointAt
in interfaceILcd2DEditablePointList
- Overrides:
removePointAt
in classALcd2DEditablePolypoint
- Parameters:
aIndex
- a valid index in the list ofILcdPoint
objects.
-
calculateBounds
protected void calculateBounds()Description copied from class:ALcd2DEditablePolypoint
Computes the bounds of the polypoint. The resulting bounds are stored infBounds
.- Overrides:
calculateBounds
in classTLcdLonLatPolypoint
-
computePointSFCT
Description copied from interface:ILcdCurve
Computes a point of the curve, defined by the given parameter.- At parameter 0, the point is the same as
ILcdCurve.getStartPoint()
. - At parameter 1, the point is the same as
ILcdCurve.getEndPoint()
.
- Specified by:
computePointSFCT
in interfaceILcdCurve
- Parameters:
aParam
- a value of the closed interval [0,1]aPointSFCT
- the point to store the computed curve point in
- At parameter 0, the point is the same as
-
getEndPoint
Description copied from interface:ILcdCurve
Retrieves the end point of the curve.This is equivalent to
computePointSFCT(1)
.- Specified by:
getEndPoint
in interfaceILcdCurve
- Returns:
- the end point of the curve
-
getEndTangent2D
public double getEndTangent2D()Description copied from interface:ILcdCurve
Returns the angle of the curve's tangent at the end point, in degrees counterclockwise from the direction at 3 o'clock.The tangent orientation is from the end point, away from the curve before it.
This is the same as
getTangent2D(1)
.- Specified by:
getEndTangent2D
in interfaceILcdCurve
- Returns:
- the curve's angle in the end point
-
getInterpolation
Description copied from interface:ILcdCurve
Returns the interpolation method used by this curve.A set of predefined constants are defined in this interface, which are used by the default
ILcdCurve
implementations provided by LuciadLightspeed.Custom implementations can define their own constants, and use them to interpret the interpolation of the curve.
- Specified by:
getInterpolation
in interfaceILcdCurve
- Returns:
- the interpolation method used by this curve.
-
getLength2D
public double getLength2D(double aParam1, double aParam2) Description copied from interface:ILcdCurve
Returns the length between two points of the curve, defined by the given parameters.- When
aParam1 == aParam2
, the length is 0. - When
aParam1 == 0 and aParam2 == 1
, the length is the whole length of the curve. - When
aParam1 > aParam2
, the length is (aParam1 to 1
) + (0 to aParam2
).
- Specified by:
getLength2D
in interfaceILcdCurve
- Parameters:
aParam1
- a value of the closed interval [0,1]aParam2
- a value of the closed interval [0,1]- Returns:
- the length of the curve.
- When
-
getLineSegmentIntersectionCount
Description copied from interface:ILcdCurve
Returns the number of intersections between this curve and a line segment defined by the two specified points.This information can be used to perform containment calculations, if this curve is closed or if this curve is part of a composite closed curve. By determining the number of intersections between this curve and a line segment starting from a given point in a fixed direction, one can determine whether a point is located within the closed curve by using the even-odd rule.
- Specified by:
getLineSegmentIntersectionCount
in interfaceILcdCurve
- Parameters:
aP1
- the first point of the line segmentaP2
- the second point of the line segment- Returns:
- the number of intersections between the curve and the line segment
-
getStartPoint
Description copied from interface:ILcdCurve
Retrieves the start point of the curve.This is equivalent to
computePointSFCT(0)
.- Specified by:
getStartPoint
in interfaceILcdCurve
- Returns:
- the start point of the curve
-
getStartTangent2D
public double getStartTangent2D()Description copied from interface:ILcdCurve
Returns the angle of the curve's tangent at the start point, in degrees counterclockwise from the direction at 3 o'clock.The tangent orientation is from the start point towards the rest of the shape.
This is the same as
getTangent2D(0)
.- Specified by:
getStartTangent2D
in interfaceILcdCurve
- Returns:
- the curve's angle in the start point
-
getTangent2D
public double getTangent2D(double aParam) Description copied from interface:ILcdCurve
Returns the angle of the curve's tangent in the point defined by the given parameter, in degrees counterclockwise from the direction at 3 o'clock.The tangent orientation is from the point at parameter
aParam
towards the rest of the shape.- The tangent at parameter 0 is the same as
ILcdCurve.getStartTangent2D()
. - The tangent at parameter 1 is the same as
ILcdCurve.getEndTangent2D()
.
- Specified by:
getTangent2D
in interfaceILcdCurve
- Parameters:
aParam
- a value of the closed interval [0,1]- Returns:
- the curve's angle in the point defined by the given parameter
- The tangent at parameter 0 is the same as
-
contains2D
The implementation of the method is based on a spherical approximation. We define theILcdPoint
aPoint
to be inside if:-
aPoint
interacts with the polygon bounds -
aPoint
has an odd number of polygon edge intersections within a distance of 180 degrees in northern direction (azimuth zero degrees)
- Specified by:
contains2D
in interfaceILcdShape
- Overrides:
contains2D
in classALcdShape
- Parameters:
aPoint
- the point to test.- Returns:
- the boolean result of the containment test.
- See Also:
-
-
contains2D
public boolean contains2D(double aLon, double aLat) Description copied from interface:ILcdShape
Checks whether thisILcdShape
contains the given point in the 2D space. Only the first two dimensions of theILcdShape
are considered.- Specified by:
contains2D
in interfaceILcdShape
- Overrides:
contains2D
in classALcd2DEditablePolypoint
- Parameters:
aLon
- the x coordinate of the point.aLat
- the y coordinate of the point.- Returns:
- the boolean result of the containment test.
-
clone
Creates and returns a copy of this object. The contained editable points list is cloned. If cloning is not possible, a warning is sent to the log and a shallow copy is returned. The contained ellipsoid is copied without being cloned. The cache, the bounds and the focus point are not copied or cloned at all, but recalculated when needed.- Specified by:
clone
in interfaceILcdCloneable
- Overrides:
clone
in classTLcdLonLatPolypoint
- See Also:
-