public class TLcdXYFloatPolyline extends ALcd2DEditableFloatPolypoint implements ILcd2DEditablePolyline, ILcdCurve
ILcd2DEditablePolyline in
the cartesian space.
It uses an array of floats instead of a TLcd2DEditablePointList
of ILcd2DEditablePoint objects. A single array of floats
stores the 2D coordinates. The points are stored as (x,y) pairs.
The boolean indicates whether the last 4 places in the array can be used
to store the bounds of the ILcd2DEditablePolyline.
This class is thread-safe for read-only access.
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| Constructor and Description |
|---|
TLcdXYFloatPolyline() |
TLcdXYFloatPolyline(float[] aPoints,
boolean aHasBounds,
boolean aBoundsInitialized,
boolean aClone) |
TLcdXYFloatPolyline(TLcdXYFloatPolyline aXYFloatPolyline) |
| Modifier and Type | Method and Description |
|---|---|
Object |
clone()
Creates and returns a copy of this object, by delegating to
Object.clone(). |
void |
computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
Computes a point of the curve, defined by the given parameter.
|
boolean |
contains2D(double aX,
double aY)
Checks if the point
(aX,aY) lies on one of the line segments
of the TLcdXYPolyline. |
protected ILcd2DEditableBounds |
createBounds()
Creates an uninitialized
ILcd2DEditableBounds object of a type compatible with the
concrete implementation of this class. |
protected ILcd2DEditablePoint |
createPoint()
Creates an uninitialized
ILcd2DEditablePoint point of a type compatible with the
concrete implementation of this class (geodesic/cartesian). |
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.
|
int |
getLineSegmentIntersectionCount(ILcdPoint aP1,
ILcdPoint aP2)
Returns the number of intersections between this curve and a line segment
defined by the two specified points.
|
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, calculateFocusPoint, equals, getBounds, getFocusPoint, getPoint, getPointCount, hashCode, insert2DPoint, invalidate, move2D, move2DPoint, removePointAt, translate2D, translate2DPointcontains3D, move2Dcontains2D, contains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, toString, wait, wait, waitmove2D, move2D, translate2Dcontains2D, contains3D, contains3D, getFocusPointgetBoundsappend2DPoint, insert2DPoint, move2DPoint, removePointAt, translate2D, translate2DPointgetPoint, getPointCount, getPointSFCT, getX, getY, getZpublic TLcdXYFloatPolyline()
public TLcdXYFloatPolyline(float[] aPoints,
boolean aHasBounds,
boolean aBoundsInitialized,
boolean aClone)
public TLcdXYFloatPolyline(TLcdXYFloatPolyline aXYFloatPolyline)
public boolean contains2D(double aX,
double aY)
(aX,aY) lies on one of the line segments
of the TLcdXYPolyline.contains2D in interface ILcdShapecontains2D in class ALcd2DEditableFloatPolypointaX - the x coordinate of the point.aY - the y coordinate of the point.protected ILcd2DEditablePoint createPoint()
ALcd2DEditableFloatPolypointILcd2DEditablePoint point of a type compatible with the
concrete implementation of this class (geodesic/cartesian). The created point will be
updated and returned by the ALcd2DEditableFloatPolypoint.getPoint(int) and ALcd2DEditableFloatPolypoint.getFocusPoint() methods.createPoint in class ALcd2DEditableFloatPolypointprotected ILcd2DEditableBounds createBounds()
ALcd2DEditableFloatPolypointILcd2DEditableBounds object of a type compatible with the
concrete implementation of this class. This bounds object will be updated and returned by the
ALcd2DEditableFloatPolypoint.getBounds() method.createBounds in class ALcd2DEditableFloatPolypointpublic Object clone()
ALcdShapeObject.clone(). Extensions should delegate to this implementation
with super.clone(), in order to create an object instance of
the right type, with all fields copied. They then should explicitly
clone any non-primitive fields for which a deeper clone is required.clone in interface ILcdCloneableclone in class ALcd2DEditableFloatPolypointObject.clone()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]