public class TLcdXYZFloatPolyline extends ALcd3DEditableFloatPolypoint implements ILcd3DEditablePolyline, ILcdCurve
ILcd3DEditablePolyline in
the cartesian space with a reduced memory footprint.
It uses an array of floats instead of a TLcd3DEditablePointList
of ILcd3DEditablePoint objects. A single array of floats
stores the 3D coordinates. The points are stored as (x,y,z) triplets.
The array can also contain the bounds of the polyline in the last 6 places. Whether or not this is the case is controlled by a boolean passed at construction time. These bounds are then stored as (x,y,z)(width,height,depth).
This class is thread-hostile, even for read-only access, since point instances are being reused from an internal pool.
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 |
|---|
TLcdXYZFloatPolyline()
Constructs an empty polyline, containing zero points.
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TLcdXYZFloatPolyline(float[] aCoordinates,
boolean aHasBounds,
boolean aBoundsInitialized,
boolean aClone)
Constructs an XYZ polyline with the points as given in the array.
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TLcdXYZFloatPolyline(TLcdXYZFloatPolyline aXYZFloatPolyline)
Clones the array of the polyline passed and interprets the its values alike (containing bounds or not).
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| 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 the 2D projection of one of the line segments
of the TLcdXYZPolyline. |
boolean |
contains3D(double aX,
double aY,
double aZ)
Checks if the point
(aX,aY,aZ) lies on one of the line segments
of the TLcdXYZPolyline. |
protected ILcd3DEditableBounds |
createBounds()
Creates an uninitialized
ILcd3DEditableBounds object of a type compatible with the
concrete implementation of this class. |
protected ILcd3DEditablePoint |
createPoint()
Creates an uninitialized
ILcd3DEditablePoint 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.
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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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calculateBounds, calculateFocusPoint, equals, getBounds, getFocusPoint, getPoint, getPointCount, hashCode, insert2DPoint, insert3DPoint, invalidate, move2D, move2DPoint, move3D, move3DPoint, removePointAt, translate2D, translate2DPoint, translate3D, translate3DPointmove3Dmove2Dcontains2D, contains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, toString, wait, wait, waitmove3D, move3D, translate3Dmove2D, move2D, translate2Dcontains2D, contains3D, getFocusPointgetBoundsinsert3DPoint, move3DPoint, removePointAt, translate3D, translate3DPointappend2DPoint, insert2DPoint, move2DPoint, translate2D, translate2DPointgetPoint, getPointCount, getPointSFCT, getX, getY, getZpublic TLcdXYZFloatPolyline()
public TLcdXYZFloatPolyline(float[] aCoordinates,
boolean aHasBounds,
boolean aBoundsInitialized,
boolean aClone)
aCoordinates - an array containing the coordinates of the points and possibly the bounds of the polyline.aHasBounds - whether to reserve the last 6 entries of the array for the bounds of the polyline or not.aBoundsInitialized - whether the last 6 entries of the array passed represent the calculated values of the
bounds of the polyline or not. This is only of importance when aHasBounds is true.aClone - whether the array containing the coordinates (and possibly the bounds) should be cloned.public TLcdXYZFloatPolyline(TLcdXYZFloatPolyline aXYZFloatPolyline)
aXYZFloatPolyline - the polyline to assume all values from.public boolean contains2D(double aX,
double aY)
(aX,aY) lies on the 2D projection of one of the line segments
of the TLcdXYZPolyline.contains2D in interface ILcdShapecontains2D in class ALcd3DEditableFloatPolypointaX - the x coordinate of the point.aY - the y coordinate of the point.public boolean contains3D(double aX,
double aY,
double aZ)
(aX,aY,aZ) lies on one of the line segments
of the TLcdXYZPolyline.contains3D in interface ILcdShapecontains3D in class ALcd3DEditableFloatPolypointaX - the x coordinate of the point.aY - the y coordinate of the point.aZ - the z coordinate of the point.true if the bounds of this shape contain the point in the 3D space
and the shape itself contains the point in the 2D space, false otherwise.public 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 ALcd3DEditableFloatPolypointObject.clone()protected ILcd3DEditablePoint createPoint()
ALcd3DEditableFloatPolypointILcd3DEditablePoint point of a type compatible with the
concrete implementation of this class (geodesic/cartesian). The created point will be updated
and returned by the ALcd3DEditableFloatPolypoint.getPoint(int) and ALcd3DEditableFloatPolypoint.getFocusPoint() methods.createPoint in class ALcd3DEditableFloatPolypointprotected ILcd3DEditableBounds createBounds()
ALcd3DEditableFloatPolypointILcd3DEditableBounds object of a type compatible with the
concrete implementation of this class. This bounds object will be updated and returned by the
ALcd3DEditableFloatPolypoint.getBounds() method.createBounds in class ALcd3DEditableFloatPolypointpublic 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]