Class TLcdXYFloatPolyline
- All Implemented Interfaces:
ILcdBounded
,ILcdCurve
,ILcdPointList
,ILcdPolyline
,ILcdPolypoint
,ILcdShape
,ILcd2DEditablePointList
,ILcd2DEditablePolyline
,ILcd2DEditablePolypoint
,ILcd2DEditableShape
,ILcdCloneable
,Serializable
,Cloneable
- Direct Known Subclasses:
TLcdDGNFloatCurve2D
,TLcdDGNFloatLineString2D
,TLcdXYFloatPolylineCache
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.
- See Also:
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Field Summary
Fields inherited from interface com.luciad.shape.ILcdCurve
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
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Constructor Summary
ConstructorDescriptionTLcdXYFloatPolyline
(float[] aPoints, boolean aHasBounds, boolean aBoundsInitialized, boolean aClone) TLcdXYFloatPolyline
(TLcdXYFloatPolyline aXYFloatPolyline) -
Method Summary
Modifier and TypeMethodDescriptionclone()
Creates and returns a copy of this object, by delegating toObject.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 theTLcdXYPolyline
.protected ILcd2DEditableBounds
Creates an uninitializedILcd2DEditableBounds
object of a type compatible with the concrete implementation of this class.protected ILcd2DEditablePoint
Creates an uninitializedILcd2DEditablePoint
point of a type compatible with the concrete implementation of this class (geodesic/cartesian).Retrieves the end point of the curve.double
Returns the angle of the curve's tangent at the end point, in degrees counterclockwise from the direction at 3 o'clock.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
Returns the number of intersections between this curve and a line segment defined by the two specified points.Retrieves the start point of the curve.double
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.Methods inherited from class com.luciad.shape.shape2D.ALcd2DEditableFloatPolypoint
calculateBounds, calculateFocusPoint, equals, getBounds, getFocusPoint, getPoint, getPointCount, hashCode, insert2DPoint, invalidate, move2D, move2DPoint, removePointAt, translate2D, translate2DPoint
Methods inherited from class com.luciad.shape.shape2D.ALcd2DEditableShape
contains3D, move2D
Methods inherited from class com.luciad.shape.ALcdShape
contains2D, contains3D, fromDomainObject
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface com.luciad.shape.shape2D.ILcd2DEditablePointList
append2DPoint, insert2DPoint, move2DPoint, removePointAt, translate2D, translate2DPoint
Methods inherited from interface com.luciad.shape.shape2D.ILcd2DEditableShape
move2D, move2D, translate2D
Methods inherited from interface com.luciad.shape.ILcdBounded
getBounds
Methods inherited from interface com.luciad.shape.ILcdPointList
getPoint, getPointCount, getPointSFCT, getX, getY, getZ
Methods inherited from interface com.luciad.shape.ILcdShape
contains2D, contains3D, contains3D, getFocusPoint
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Constructor Details
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Method Details
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contains2D
public boolean contains2D(double aX, double aY) Checks if the point(aX,aY)
lies on one of the line segments of theTLcdXYPolyline
.- Specified by:
contains2D
in interfaceILcdShape
- Overrides:
contains2D
in classALcd2DEditableFloatPolypoint
- Parameters:
aX
- the x coordinate of the point.aY
- the y coordinate of the point.- Returns:
- the boolean result of the containment test.
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createPoint
Description copied from class:ALcd2DEditableFloatPolypoint
Creates an uninitializedILcd2DEditablePoint
point of a type compatible with the concrete implementation of this class (geodesic/cartesian). The created point will be updated and returned by theALcd2DEditableFloatPolypoint.getPoint(int)
andALcd2DEditableFloatPolypoint.getFocusPoint()
methods.- Specified by:
createPoint
in classALcd2DEditableFloatPolypoint
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createBounds
Description copied from class:ALcd2DEditableFloatPolypoint
Creates an uninitializedILcd2DEditableBounds
object of a type compatible with the concrete implementation of this class. This bounds object will be updated and returned by theALcd2DEditableFloatPolypoint.getBounds()
method.- Specified by:
createBounds
in classALcd2DEditableFloatPolypoint
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clone
Description copied from class:ALcdShape
Creates and returns a copy of this object, by delegating toObject.clone()
. Extensions should delegate to this implementation withsuper.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.- Specified by:
clone
in interfaceILcdCloneable
- Overrides:
clone
in classALcd2DEditableFloatPolypoint
- See Also:
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computePointSFCT
Description copied from interface:ILcdCurve
Computes a point of the curve, defined by the given parameter.- At parameter 0, the point is the same as
ILcdCurve.getStartPoint()
. - At parameter 1, the point is the same as
ILcdCurve.getEndPoint()
.
- Specified by:
computePointSFCT
in interfaceILcdCurve
- Parameters:
aParam
- a value of the closed interval [0,1]aPointSFCT
- the point to store the computed curve point in
- At parameter 0, the point is the same as
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getEndPoint
Description copied from interface:ILcdCurve
Retrieves the end point of the curve.This is equivalent to
computePointSFCT(1)
.- Specified by:
getEndPoint
in interfaceILcdCurve
- Returns:
- the end point of the curve
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getEndTangent2D
public double getEndTangent2D()Description copied from interface:ILcdCurve
Returns the angle of the curve's tangent at the end point, in degrees counterclockwise from the direction at 3 o'clock.The tangent orientation is from the end point, away from the curve before it.
This is the same as
getTangent2D(1)
.- Specified by:
getEndTangent2D
in interfaceILcdCurve
- Returns:
- the curve's angle in the end point
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getInterpolation
Description copied from interface:ILcdCurve
Returns the interpolation method used by this curve.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.
- Specified by:
getInterpolation
in interfaceILcdCurve
- Returns:
- the interpolation method used by this curve.
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getLength2D
public double getLength2D(double aParam1, double aParam2) Description copied from interface:ILcdCurve
Returns the length between two points of the curve, defined by the given parameters.- When
aParam1 == aParam2
, the length is 0. - When
aParam1 == 0 and aParam2 == 1
, the length is the whole length of the curve. - When
aParam1 > aParam2
, the length is (aParam1 to 1
) + (0 to aParam2
).
- Specified by:
getLength2D
in interfaceILcdCurve
- Parameters:
aParam1
- a value of the closed interval [0,1]aParam2
- a value of the closed interval [0,1]- Returns:
- the length of the curve.
- When
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getLineSegmentIntersectionCount
Description copied from interface:ILcdCurve
Returns the number of intersections between this curve and a line segment defined by the two specified points.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.
- Specified by:
getLineSegmentIntersectionCount
in interfaceILcdCurve
- Parameters:
aP1
- the first point of the line segmentaP2
- the second point of the line segment- Returns:
- the number of intersections between the curve and the line segment
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getStartPoint
Description copied from interface:ILcdCurve
Retrieves the start point of the curve.This is equivalent to
computePointSFCT(0)
.- Specified by:
getStartPoint
in interfaceILcdCurve
- Returns:
- the start point of the curve
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getStartTangent2D
public double getStartTangent2D()Description copied from interface:ILcdCurve
Returns the angle of the curve's tangent at the start point, in degrees counterclockwise from the direction at 3 o'clock.The tangent orientation is from the start point towards the rest of the shape.
This is the same as
getTangent2D(0)
.- Specified by:
getStartTangent2D
in interfaceILcdCurve
- Returns:
- the curve's angle in the start point
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getTangent2D
public double getTangent2D(double aParam) Description copied from interface:ILcdCurve
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.The tangent orientation is from the point at parameter
aParam
towards the rest of the shape.- The tangent at parameter 0 is the same as
ILcdCurve.getStartTangent2D()
. - The tangent at parameter 1 is the same as
ILcdCurve.getEndTangent2D()
.
- Specified by:
getTangent2D
in interfaceILcdCurve
- Parameters:
aParam
- a value of the closed interval [0,1]- Returns:
- the curve's angle in the point defined by the given parameter
- The tangent at parameter 0 is the same as
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