Class TLcdXYLine
- All Implemented Interfaces:
ILcdBounded
,ILcdCurve
,ILcdPointList
,ILcdPolyline
,ILcdShape
,ILcd2DEditablePointList
,ILcd2DEditablePolyline
,ILcd2DEditableShape
,ILcdCache
,ILcdCloneable
,Serializable
,Cloneable
- Direct Known Subclasses:
TLcdDGNDimension
,TLcdDGNLine2D
,TLcdDWGLine
ILcd2DEditablePolyline
that always has two points, 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.
- See Also:
-
Field Summary
Fields inherited from class com.luciad.shape.shape2D.ALcd2DEditableLine
fBounds, fFocusPoint, fPoint1, fPoint2
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
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionprotected void
This method should compute the bounds of the polypoint.clone()
Creates and returns a copy of this object.void
computePointSFCT
(double aParam, ILcd3DEditablePoint aPointSFCT) Computes a point of the curve, defined by the given parameter.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.ALcd2DEditableLine
calculateFocusPoint, clearCache, contains2D, equals, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, hashCode, insert2DPoint, insertIntoCache, invalidateBounds, move2D, move2DPoint, removeCachedObject, removePointAt, setFocusPoint, toString, 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, 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.util.ILcdCache
clearCache, getCachedObject, insertIntoCache, removeCachedObject
Methods inherited from interface com.luciad.shape.ILcdPointList
getPoint, getPointCount, getPointSFCT, getX, getY, getZ
Methods inherited from interface com.luciad.shape.ILcdShape
contains2D, contains2D, contains3D, contains3D, getFocusPoint
-
Constructor Details
-
TLcdXYLine
-
-
Method Details
-
calculateBounds
protected void calculateBounds()Description copied from class:ALcd2DEditableLine
This method should compute the bounds of the polypoint. The resultingILcd2DEditableBounds
should be stored infBounds
.- Specified by:
calculateBounds
in classALcd2DEditableLine
-
clone
Creates and returns a copy of this object. The two editable points of the line are cloned. The cache, the bounds and the focus point are not copied or cloned at all, but recalculated when needed.- Specified by:
clone
in interfaceILcdCloneable
- Overrides:
clone
in classALcd2DEditableLine
- See Also:
-
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
-
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
-
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
-
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.
-
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
-
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
-
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
-
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
-
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
-