public class TLcdLonLatPolyline extends TLcdLonLatPolypoint implements ILcd2DEditablePolyline, ILcdCurve
ILcd2DEditablePolyline in the geodetic
space. In addition to the properties defined by ILcd2DEditablePolyline, a
TLcdLonLatPolyline 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, fFocusPointINTERPOLATION_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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TLcdLonLatPolyline()
Creates an empty polyline on a default (WGS 84) ellipsoid.
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TLcdLonLatPolyline(ILcd2DEditablePointList a2DEditablePointList)
Creates a polyline using the given point list.
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TLcdLonLatPolyline(ILcd2DEditablePointList a2DEditablePointList,
ILcdEllipsoid aEllipsoid)
Creates a polyline using the given point list.
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TLcdLonLatPolyline(ILcdEllipsoid aEllipsoid)
Creates an empty polyline on the given ellipsoid.
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TLcdLonLatPolyline(TLcdLonLatPolyline aLonLatPolyline,
boolean aDeepCopy)
Creates a polyline based on another polyline.
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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 x,
double y)
Checks whether this
ILcdShape contains the given point in
the 2D space. |
boolean |
contains2D(ILcdPoint aPoint)
Checks whether this
ALcdShape contains the given point in the
2D cartesian plane. |
boolean |
equals(Object aObject)
Returns whether the given object has the same class, the same focus point, the same
coordinates, and the same ellipsoid.
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ILcdEllipsoid |
getEllipsoid()
Get the ellipsoid used for this polyline.
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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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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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int |
hashCode()
The hash code of this shape is the hash code of its class, in order to
be consistent with the
ALcdShape.equals(Object) method. |
protected void |
invalidateBounds() |
void |
setEllipsoid(ILcdEllipsoid aEllipsoid)
Set the ellipsoid used for this polyline.
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calculateFocusPointclearCache, get2DEditablePointList, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, getPointSFCT, getX, getY, getZ, insert2DPoint, insertIntoCache, invalidateObject, move2D, move2DPoint, removeCachedObject, removePointAt, set2DEditablePointList, setFocusPoint, toString, translate2D, translate2DPointcontains3D, move2Dcontains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, wait, wait, waitmove2D, move2D, translate2Dcontains3D, contains3D, getFocusPointgetBoundsappend2DPoint, insert2DPoint, move2DPoint, removePointAt, translate2D, translate2DPointgetPoint, getPointCount, getPointSFCT, getX, getY, getZclearCache, getCachedObject, insertIntoCache, removeCachedObjectpublic TLcdLonLatPolyline()
public TLcdLonLatPolyline(ILcdEllipsoid aEllipsoid)
aEllipsoid - the ellipsoid on which to define the polylinepublic TLcdLonLatPolyline(ILcd2DEditablePointList a2DEditablePointList)
TLcdLonLatPointsa2DEditablePointList - A point list containing lon-lat points.public TLcdLonLatPolyline(ILcd2DEditablePointList a2DEditablePointList, ILcdEllipsoid aEllipsoid)
TLcdLonLatPointsa2DEditablePointList - A point list containing lon-lat points.aEllipsoid - the ellipsoid on which to define the polylinepublic TLcdLonLatPolyline(TLcdLonLatPolyline aLonLatPolyline, boolean aDeepCopy)
aDeepCopy is true, and the given polyline has a cloneable pointlist
(see ILcdCloneable, for example TLcd2DEditablePointList), the underlying
points will be cloned.
aLonLatPolyline - The polyline to copyaDeepCopy - whether to make a copy of the points, if possiblepublic ILcdEllipsoid getEllipsoid()
public void setEllipsoid(ILcdEllipsoid aEllipsoid)
aEllipsoid - the new ellipsoidprotected 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)
ALcdShapeALcdShape contains the given point in the
2D cartesian plane.contains2D in interface ILcdShapecontains2D in class ALcdShapeaPoint - the point to test.ILcdShape.contains2D(double, double)public boolean contains2D(double x,
double y)
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 ALcd2DEditablePolypointx - the x coordinate of the point.y - the y coordinate of the point.protected void invalidateBounds()
invalidateBounds in class ALcd2DEditablePolypointpublic Object clone()
clone in interface ILcdCloneableclone in class TLcdLonLatPolypointObject.clone()public boolean equals(Object aObject)
equals in class ALcd2DEditablePolypointpublic int hashCode()
ALcdShapeALcdShape.equals(Object) method.
Extensions should refine this implementation, based on their properties.hashCode in class ALcd2DEditablePolypoint