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 |
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TLcdXYZFloatPolyline()
Constructs an empty polyline, containing zero points.
|
TLcdXYZFloatPolyline(float[] aCoordinates,
boolean aHasBounds,
boolean aBoundsInitialized,
boolean aClone)
Constructs an XYZ polyline with the points as given in the array.
|
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 |
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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.
|
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, insert3DPoint, invalidate, move2D, move2DPoint, move3D, move3DPoint, removePointAt, translate2D, translate2DPoint, translate3D, translate3DPoint
move3D
move2D
contains2D, contains3D, fromDomainObject
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
move3D, move3D, translate3D
move2D, move2D, translate2D
contains2D, contains3D, getFocusPoint
getBounds
insert3DPoint, move3DPoint, removePointAt, translate3D, translate3DPoint
append2DPoint, insert2DPoint, move2DPoint, translate2D, translate2DPoint
getPoint, getPointCount, getPointSFCT, getX, getY, getZ
public 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 ILcdShape
contains2D
in class ALcd3DEditableFloatPolypoint
aX
- 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 ILcdShape
contains3D
in class ALcd3DEditableFloatPolypoint
aX
- 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()
ALcdShape
Object.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 ILcdCloneable
clone
in class ALcd3DEditableFloatPolypoint
Object.clone()
protected ILcd3DEditablePoint createPoint()
ALcd3DEditableFloatPolypoint
ILcd3DEditablePoint
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 ALcd3DEditableFloatPolypoint
protected ILcd3DEditableBounds createBounds()
ALcd3DEditableFloatPolypoint
ILcd3DEditableBounds
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 ALcd3DEditableFloatPolypoint
public void computePointSFCT(double aParam, ILcd3DEditablePoint aPointSFCT)
ILcdCurve
ILcdCurve.getStartPoint()
.ILcdCurve.getEndPoint()
.computePointSFCT
in interface ILcdCurve
aParam
- 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 ILcdCurve
public double getEndTangent2D()
ILcdCurve
The tangent orientation is from the end point, away from the curve before it.
This is the same as getTangent2D(1)
.
getEndTangent2D
in interface ILcdCurve
public 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 ILcdCurve
public double getLength2D(double aParam1, double aParam2)
ILcdCurve
aParam1 == 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 ILcdCurve
aParam1
- a value of the closed interval [0,1]aParam2
- a value of the closed interval [0,1]public int getLineSegmentIntersectionCount(ILcdPoint aP1, ILcdPoint aP2)
ILcdCurve
This 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 ILcdCurve
aP1
- 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 ILcdCurve
public double getStartTangent2D()
ILcdCurve
The tangent orientation is from the start point towards the rest of the shape.
This is the same as getTangent2D(0)
.
getStartTangent2D
in interface ILcdCurve
public 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 ILcdCurve
aParam
- a value of the closed interval [0,1]