public class TLcdXYPolyline extends TLcdXYPolypoint implements ILcd2DEditablePolyline, ILcdCurve
ILcd2DEditablePolyline in
the cartesian space.
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.
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 |
|---|
TLcdXYPolyline()
Default constructor.
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TLcdXYPolyline(ILcd2DEditablePointList a2DEditablePointList)
Constructs and initializes from the specified parameters.
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TLcdXYPolyline(TLcdXYPolyline aPolyline,
boolean aDeepCopy)
Makes a clone of the point list that represents the polyline if it implements
the interface
ILcdCloneable and aDeepCopy is true. |
| Modifier and Type | Method and Description |
|---|---|
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 aX,
double aY)
Checks if the point
(aX,aY) lies on one of the line segments
of the TLcdXYPolyline. |
ILcdPoint |
getEndPoint()
Retrieves the end point of the curve.
|
double |
getEndTangent2D()
Returns the angle of the curve's tangent at the end point,
in degrees counterclockwise from the direction at 3 o'clock.
|
String |
getInterpolation()
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.
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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.
|
double |
getStartTangent2D()
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.
|
calculateBounds, calculateFocusPointclearCache, equals, get2DEditablePointList, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, getPointSFCT, getX, getY, getZ, hashCode, insert2DPoint, insertIntoCache, invalidateBounds, invalidateObject, move2D, move2DPoint, removeCachedObject, removePointAt, set2DEditablePointList, setFocusPoint, toString, translate2D, translate2DPointcontains3D, move2Dcontains2D, contains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, wait, wait, waitmove2D, move2D, translate2Dcontains2D, contains3D, contains3D, getFocusPointgetBoundsappend2DPoint, insert2DPoint, move2DPoint, removePointAt, translate2D, translate2DPointgetPoint, getPointCount, getPointSFCT, getX, getY, getZclearCache, getCachedObject, insertIntoCache, removeCachedObjectpublic TLcdXYPolyline()
public TLcdXYPolyline(ILcd2DEditablePointList a2DEditablePointList)
a2DEditablePointList - the points to consider.public TLcdXYPolyline(TLcdXYPolyline aPolyline, boolean aDeepCopy)
ILcdCloneable and aDeepCopy is true.
#see com.luciad.util.ILcdCloneablepublic boolean contains2D(double aX,
double aY)
(aX,aY) lies on one of the line segments
of the TLcdXYPolyline.contains2D in interface ILcdShapecontains2D in class ALcd2DEditablePolypointaX - the x coordinate of the point.aY - the y coordinate of the point.public 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 Object clone()
clone in interface ILcdCloneableclone in class TLcdXYPolypointObject.clone()