public class TLcdXYPolygon extends TLcdXYPolypoint implements ILcd2DEditablePolygon, ILcdRing
ILcd2DEditablePolygon
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.
fBounds, fFocusPoint
CLOCKWISE, COUNTERCLOCKWISE, INVALID_ORIENTATION
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 |
---|
TLcdXYPolygon() |
TLcdXYPolygon(ILcd2DEditablePointList a2DEditablePointList) |
TLcdXYPolygon(TLcdXYPolygon aPolygon,
boolean aDeepCopy)
Makes a clone of the point list that represents the polygon if it implements
the interface
ILcdCloneable and aDeepCopy is true. |
Modifier and Type | Method and Description |
---|---|
protected void |
calculateOrientation() |
Object |
clone()
Creates and returns a copy of this object.
|
int |
computePointAndNextIndexSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT) |
void |
computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
Computes a point of the curve, defined by the given parameter.
|
boolean |
contains2D(double aX,
double aY)
Determines whether this
contains the given point. |
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.
|
int |
getOrientation()
Returns the orientation of this
ILcdPolygon :
ILcdPolygon.CLOCKWISE or ILcdPolygon.COUNTERCLOCKWISE . |
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.
|
void |
insert2DPoint(int aIndex,
double aX,
double aY)
Inserts a point at the given index into this
ILcd2DEditablePointList . |
void |
move2DPoint(int aIndex,
double aX,
double aY)
Moves the specified point of this
ILcd2DEditablePointList to the given point in the 2D space. |
void |
removePointAt(int aIndex)
Removes the point at the given index from this
ILcd2DEditablePointList . |
void |
set2DEditablePointList(ILcd2DEditablePointList a2DEditablePointList) |
void |
setOrientation(int aOrientation)
Sets the orientation of this
ILcd2DEditablePolygon . |
void |
translate2DPoint(int aIndex,
double aDeltaX,
double aDeltaY)
Translates the specified point of this
ILcd2DEditablePointList from its current position
over the given translation vector in the 2D space. |
calculateBounds, calculateFocusPoint
clearCache, equals, get2DEditablePointList, getBounds, getCachedObject, getFocusPoint, getPoint, getPointCount, getPointSFCT, getX, getY, getZ, hashCode, insertIntoCache, invalidateBounds, invalidateObject, move2D, removeCachedObject, setFocusPoint, toString, translate2D
contains3D, move2D
contains2D, contains3D, fromDomainObject
finalize, getClass, notify, notifyAll, wait, wait, wait
move2D, move2D, translate2D
append2DPoint, translate2D
getPoint, getPointCount, getPointSFCT, getX, getY, getZ
contains2D, contains3D, contains3D, getFocusPoint
getBounds
clearCache, getCachedObject, insertIntoCache, removeCachedObject
public TLcdXYPolygon()
public TLcdXYPolygon(ILcd2DEditablePointList a2DEditablePointList)
public TLcdXYPolygon(TLcdXYPolygon aPolygon, boolean aDeepCopy)
ILcdCloneable
and aDeepCopy
is true.
#see com.luciad.util.ILcdCloneableprotected void calculateOrientation()
public final int getOrientation()
ILcdPolygon
ILcdPolygon
:
ILcdPolygon.CLOCKWISE
or ILcdPolygon.COUNTERCLOCKWISE
.getOrientation
in interface ILcdPolygon
ILcdPolygon
:
ILcdPolygon.CLOCKWISE
or ILcdPolygon.COUNTERCLOCKWISE
.
This method should not return INVALID_ORIENTATION
, which is only to be used for resetting the orientation
so that it can be recalculated.public final void setOrientation(int aOrientation)
ILcd2DEditablePolygon
ILcd2DEditablePolygon
.setOrientation
in interface ILcd2DEditablePolygon
aOrientation
- ILcd2DEditablePolygon.CLOCKWISE
,
ILcd2DEditablePolygon.COUNTERCLOCKWISE
or ILcd2DEditablePolygon.INVALID_ORIENTATION
.public boolean contains2D(double aX, double aY)
contains the given point. This method uses
an even-odd insideness rule (also known as an alternating rule).contains2D
in interface ILcdShape
contains2D
in class ALcd2DEditablePolypoint
aX
- the X coordinate of the point to be tested.aY
- the Y coordinate of the point to be tested.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 int computePointAndNextIndexSFCT(double aParam, ILcd3DEditablePoint aPointSFCT)
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]public void set2DEditablePointList(ILcd2DEditablePointList a2DEditablePointList)
set2DEditablePointList
in class ALcd2DEditablePolypoint
public void move2DPoint(int aIndex, double aX, double aY)
ILcd2DEditablePointList
ILcd2DEditablePointList
to the given point in the 2D space. Only the first
two dimensions of the ILcdShape
are considered.
The third dimension is left unchanged.move2DPoint
in interface ILcd2DEditablePointList
move2DPoint
in class ALcd2DEditablePolypoint
aIndex
- a valid index in the list of points.aX
- the x coordinate of the point.aY
- the y coordinate of the point.public void translate2DPoint(int aIndex, double aDeltaX, double aDeltaY)
ILcd2DEditablePointList
ILcd2DEditablePointList
from its current position
over the given translation vector in the 2D space. Only the first two
dimensions of the points are considered. The third dimension is left unchanged.translate2DPoint
in interface ILcd2DEditablePointList
translate2DPoint
in class ALcd2DEditablePolypoint
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.public void insert2DPoint(int aIndex, double aX, double aY)
ILcd2DEditablePointList
ILcd2DEditablePointList
.insert2DPoint
in interface ILcd2DEditablePointList
insert2DPoint
in class ALcd2DEditablePolypoint
aIndex
- a valid new index in the list of points.aX
- the x coordinate of the new point.aY
- the y coordinate of the new point.public void removePointAt(int aIndex)
ILcd2DEditablePointList
ILcd2DEditablePointList
.removePointAt
in interface ILcd2DEditablePointList
removePointAt
in class ALcd2DEditablePolypoint
aIndex
- a valid index in the list of ILcdPoint
objects.public Object clone()
clone
in interface ILcdCloneable
clone
in class TLcdXYPolypoint
Object.clone()