public class TLcdLonLatPolygon extends TLcdLonLatPolypoint implements ILcd2DEditablePolygon, ILcdRing
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).
fBounds, fFocusPointCLOCKWISE, COUNTERCLOCKWISE, INVALID_ORIENTATIONINTERPOLATION_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| Constructor and Description |
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TLcdLonLatPolygon()
Creates an empty polygon on a default (WGS 84) ellipsoid.
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TLcdLonLatPolygon(ILcd2DEditablePointList a2DEditablePointList)
Creates a polygon using the given point list.
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TLcdLonLatPolygon(ILcd2DEditablePointList a2DEditablePointList,
ILcdEllipsoid aEllipsoid)
Creates a polygon using the given point list.
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TLcdLonLatPolygon(TLcdLonLatPolygon aLonLatPolygon,
boolean aDeepCopy)
Creates a polygon based on another polygon.
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| Modifier and Type | Method and Description |
|---|---|
protected void |
calculateBounds()
Computes the bounds of the polypoint.
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Object |
clone()
Creates and returns a copy of this object.
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void |
computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
Computes a point of the curve, defined by the given parameter.
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boolean |
contains2D(double aLon,
double aLat)
Checks whether this
ILcdShape contains the given point in
the 2D space. |
boolean |
contains2D(ILcdPoint aPoint)
The implementation of the method is based on a spherical approximation.
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ILcdEllipsoid |
getEllipsoid()
Get the ellipsoid used for this polygon.
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ILcdPoint |
getEndPoint()
Retrieves the end point of the curve.
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double |
getEndTangent2D()
Returns the angle of the curve's tangent at the end point,
in degrees counterclockwise from the direction at 3 o'clock.
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String |
getInterpolation()
Returns the interpolation method used by this curve.
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double |
getLength2D(double aParam1,
double aParam2)
Returns the length between two points of the curve,
defined by the given parameters.
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int |
getLineSegmentIntersectionCount(ILcdPoint aP1,
ILcdPoint aP2)
Returns the number of intersections between this curve and a line segment
defined by the two specified points.
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int |
getOrientation()
Returns the orientation of this
ILcdPolygon:
ILcdPolygon.CLOCKWISE or ILcdPolygon.COUNTERCLOCKWISE. |
ILcdPoint |
getStartPoint()
Retrieves the start point of the curve.
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double |
getStartTangent2D()
Returns the angle of the curve's tangent at the start point,
in degrees counterclockwise from the direction at 3 o'clock.
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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.
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void |
insert2DPoint(int aIndex,
double aX,
double aY)
Inserts a point at the given index into this
ILcd2DEditablePointList. |
void |
move2DPoint(int aIndex,
double aX,
double aY)
Moves the specified point of this
ILcd2DEditablePointList to the given point in the 2D space. |
void |
removePointAt(int aIndex)
Removes the point at the given index from this
ILcd2DEditablePointList. |
void |
set2DEditablePointList(ILcd2DEditablePointList a2DEditablePointList) |
void |
setEllipsoid(ILcdEllipsoid aEllipsoid)
Set the ellipsoid used for this polygon.
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void |
setOrientation(int aOrientation)
Sets the orientation of this
ILcd2DEditablePolygon. |
void |
translate2DPoint(int aIndex,
double aDeltaX,
double aDeltaY)
Translates the specified point of this
ILcd2DEditablePointList from its current position
over the given translation vector in the 2D space. |
calculateFocusPointclearCache, equals, get2DEditablePointList, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, getPointSFCT, getX, getY, getZ, hashCode, insertIntoCache, invalidateBounds, invalidateObject, move2D, removeCachedObject, setFocusPoint, toString, translate2Dcontains3D, move2Dcontains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, wait, wait, waitmove2D, move2D, translate2Dappend2DPoint, translate2DgetPoint, getPointCount, getPointSFCT, getX, getY, getZcontains3D, contains3D, getFocusPointgetBoundsclearCache, getCachedObject, insertIntoCache, removeCachedObjectpublic TLcdLonLatPolygon()
public TLcdLonLatPolygon(ILcd2DEditablePointList a2DEditablePointList)
TLcdLonLatPointsa2DEditablePointList - A point list containing lon-lat points.public TLcdLonLatPolygon(ILcd2DEditablePointList a2DEditablePointList, ILcdEllipsoid aEllipsoid)
TLcdLonLatPointsa2DEditablePointList - A point list containing lon-lat points.aEllipsoid - the ellipsoid on which to define the polygonpublic TLcdLonLatPolygon(TLcdLonLatPolygon aLonLatPolygon, boolean aDeepCopy)
aDeepCopy is true, and the given polygon has a cloneable pointlist
(see ILcdCloneable, for example TLcd2DEditablePointList), the underlying
points will be cloned.
aLonLatPolygon - The polygon to copyaDeepCopy - whether to make a copy of the points, if possiblepublic ILcdEllipsoid getEllipsoid()
public void setEllipsoid(ILcdEllipsoid aEllipsoid)
aEllipsoid - the new ellipsoidpublic int getOrientation()
ILcdPolygonILcdPolygon:
ILcdPolygon.CLOCKWISE or ILcdPolygon.COUNTERCLOCKWISE.getOrientation in interface ILcdPolygonILcdPolygon:
ILcdPolygon.CLOCKWISE or ILcdPolygon.COUNTERCLOCKWISE.
This method should not return INVALID_ORIENTATION, which is only to be used for resetting the orientation
so that it can be recalculated.public final void setOrientation(int aOrientation)
ILcd2DEditablePolygon.
Note: modifying the geometry of this polygon or modifying the ellipsoid
setEllipsoid(com.luciad.geodesy.ILcdEllipsoid) will clear the
orientation.
setOrientation in interface ILcd2DEditablePolygonaOrientation - ILcd2DEditablePolygon.CLOCKWISE,
ILcd2DEditablePolygon.COUNTERCLOCKWISE or ILcd2DEditablePolygon.INVALID_ORIENTATION.public void set2DEditablePointList(ILcd2DEditablePointList a2DEditablePointList)
set2DEditablePointList in class ALcd2DEditablePolypointpublic void move2DPoint(int aIndex,
double aX,
double aY)
ILcd2DEditablePointListILcd2DEditablePointList to the given point in the 2D space. Only the first
two dimensions of the ILcdShape are considered.
The third dimension is left unchanged.move2DPoint in interface ILcd2DEditablePointListmove2DPoint in class ALcd2DEditablePolypointaIndex - a valid index in the list of points.aX - the x coordinate of the point.aY - the y coordinate of the point.public void translate2DPoint(int aIndex,
double aDeltaX,
double aDeltaY)
ILcd2DEditablePointListILcd2DEditablePointList 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.translate2DPoint in interface ILcd2DEditablePointListtranslate2DPoint in class ALcd2DEditablePolypointaDeltaX - the x coordinate of the translation vector.aDeltaY - the y coordinate of the translation vector.public void insert2DPoint(int aIndex,
double aX,
double aY)
ILcd2DEditablePointListILcd2DEditablePointList.insert2DPoint in interface ILcd2DEditablePointListinsert2DPoint in class ALcd2DEditablePolypointaIndex - 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.public void removePointAt(int aIndex)
ILcd2DEditablePointListILcd2DEditablePointList.removePointAt in interface ILcd2DEditablePointListremovePointAt in class ALcd2DEditablePolypointaIndex - a valid index in the list of ILcdPoint objects.protected void calculateBounds()
ALcd2DEditablePolypointfBounds.calculateBounds in class TLcdLonLatPolypointpublic void computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
ILcdCurveILcdCurve.getStartPoint().ILcdCurve.getEndPoint().computePointSFCT in interface ILcdCurveaParam - a value of the closed interval [0,1]aPointSFCT - the point to store the computed curve point inpublic ILcdPoint getEndPoint()
ILcdCurve
This is equivalent to computePointSFCT(1).
getEndPoint in interface ILcdCurvepublic double getEndTangent2D()
ILcdCurveThe tangent orientation is from the end point, away from the curve before it.
This is the same as getTangent2D(1).
getEndTangent2D in interface ILcdCurvepublic String getInterpolation()
ILcdCurve
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.
getInterpolation in interface ILcdCurvepublic double getLength2D(double aParam1,
double aParam2)
ILcdCurveaParam1 == aParam2, the length is 0.aParam1 == 0 and aParam2 == 1, the length is the whole length of the curve.aParam1 > aParam2, the length is (aParam1 to 1) + (0 to aParam2).getLength2D in interface ILcdCurveaParam1 - a value of the closed interval [0,1]aParam2 - a value of the closed interval [0,1]public int getLineSegmentIntersectionCount(ILcdPoint aP1, ILcdPoint aP2)
ILcdCurveThis 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.
getLineSegmentIntersectionCount in interface ILcdCurveaP1 - the first point of the line segmentaP2 - the second point of the line segmentpublic ILcdPoint getStartPoint()
ILcdCurve
This is equivalent to computePointSFCT(0).
getStartPoint in interface ILcdCurvepublic double getStartTangent2D()
ILcdCurveThe tangent orientation is from the start point towards the rest of the shape.
This is the same as getTangent2D(0).
getStartTangent2D in interface ILcdCurvepublic double getTangent2D(double aParam)
ILcdCurve
The tangent orientation is from the point at parameter aParam towards the rest of the shape.
ILcdCurve.getStartTangent2D().ILcdCurve.getEndTangent2D().getTangent2D in interface ILcdCurveaParam - a value of the closed interval [0,1]public boolean contains2D(ILcdPoint aPoint)
ILcdPoint 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)
contains2D in interface ILcdShapecontains2D in class ALcdShapeaPoint - the point to test.ILcdShape.contains2D(double, double)public boolean contains2D(double aLon,
double aLat)
ILcdShapeILcdShape contains the given point in
the 2D space. Only the first two dimensions of the ILcdShape
are considered.contains2D in interface ILcdShapecontains2D in class ALcd2DEditablePolypointaLon - the x coordinate of the point.aLat - the y coordinate of the point.public Object clone()
clone in interface ILcdCloneableclone in class TLcdLonLatPolypointObject.clone()