public class TLcdXYCircleBy3Points extends ALcd2DEditableShape implements ILcd2DEditableCircleBy3Points, ILcdCache
ILcd2DEditableCircleBy3Points
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.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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TLcdXYCircleBy3Points()
Default constructor, initializing all three points at (0,0).
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TLcdXYCircleBy3Points(double aStartX,
double aStartY,
double aIntermediateX,
double aIntermediateY,
double aEndX,
double aEndY)
Creates a new circle arc using the given point coordinates.
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TLcdXYCircleBy3Points(ILcdPoint aStartControlPoint,
ILcdPoint aIntermediateControlPoint,
ILcdPoint aEndControlPoint)
Creates a new circle using the given points.
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Modifier and Type | Method and Description |
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void |
clearCache()
Clears the cache.
|
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 whether this
ILcdShape contains the given point in
the 2D space. |
boolean |
equals(Object o)
An object is considered equal to this shape if it has the same class.
|
ILcdBounds |
getBounds()
Returns the
ILcdBounds by which the geometry of this ILcdBounded object
is bounded. |
Object |
getCachedObject(Object aKey)
Looks up and returns the cached Object corresponding to the given key.
|
ILcdPoint |
getCenter()
Returns the center of this
ILcdCircle . |
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.
|
ILcdPoint |
getFirstIntermediatePoint()
Returns the first intermediate point of this circle.
|
ILcdPoint |
getFocusPoint()
Returns the focus point of this
ILcdShape . |
String |
getInterpolation()
Returns the interpolation method used by this curve,
which is
ILcdCurve.INTERPOLATION_CIRCLE_BY_3POINTS . |
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.
|
double |
getRadius()
Returns the radius of this
ILcdCircle . |
ILcdPoint |
getSecondIntermediatePoint()
Returns the second intermediate point of this circle.
|
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.
|
int |
hashCode()
The hash code of this shape is the hash code of its class, in order to
be consistent with the
ALcdShape.equals(Object) method. |
void |
insertIntoCache(Object aKey,
Object aObject)
Inserts a cache Object corresponding to the given key Object.
|
void |
moveFirstIntermediatePoint2D(double aX,
double aY)
Moves the first intermediate point to the given point in the 2D space.
|
void |
moveSecondIntermediatePoint2D(double aX,
double aY)
Moves the second intermediate point to the given point in the 2D space.
|
void |
moveStartPoint2D(double aX,
double aY)
Moves the start point to the given point in the 2D space.
|
Object |
removeCachedObject(Object aKey)
Looks up and removes the cached Object corresponding to the given key.
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void |
translate2D(double aDeltaX,
double aDeltaY)
Translates this
ILcd2DEditableShape from its current position over the given translation
vector in the 2D space. |
void |
translateFirstIntermediatePoint2D(double aDeltaX,
double aDeltaY)
Translates the first intermediate point from its current position over the given translation
vector in the 2D space.
|
void |
translateSecondIntermediatePoint2D(double aDeltaX,
double aDeltaY)
Translates the second intermediate point from its current position over the given translation vector in
the 2D space.
|
void |
translateStartPoint2D(double aDeltaX,
double aDeltaY)
Translates the start point from its current position over the given translation vector
in the 2D space.
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contains3D, move2D, move2D
contains2D, contains3D, fromDomainObject
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
contains2D, contains3D, contains3D
public TLcdXYCircleBy3Points()
public TLcdXYCircleBy3Points(ILcdPoint aStartControlPoint, ILcdPoint aIntermediateControlPoint, ILcdPoint aEndControlPoint)
aStartControlPoint
- the start control point of the arcaIntermediateControlPoint
- the intermediate control point of the arcaEndControlPoint
- the end control point of the arcpublic TLcdXYCircleBy3Points(double aStartX, double aStartY, double aIntermediateX, double aIntermediateY, double aEndX, double aEndY)
aStartX
- X-coordinate of the arc's start control pointaStartY
- Y-coordinate of the arc's start control pointaIntermediateX
- X-coordinate of the arc's intermediate control pointaIntermediateY
- Y-coordinate of the arc's intermediate control pointaEndX
- X-coordinate of the arc's control end pointaEndY
- Y-coordinate of the arc's control end pointpublic ILcdPoint getFirstIntermediatePoint()
ILcdCircleBy3Points
getFirstIntermediatePoint
in interface ILcdCircleBy3Points
public ILcdPoint getSecondIntermediatePoint()
ILcdCircleBy3Points
getSecondIntermediatePoint
in interface ILcdCircleBy3Points
public void moveStartPoint2D(double aX, double aY)
ILcd2DEditableCircleBy3Points
ILcdShape
are considered. The third dimension is left unchanged.moveStartPoint2D
in interface ILcd2DEditableCircleBy3Points
aX
- the x coordinate of the point.aY
- the y coordinate of the point.public void moveFirstIntermediatePoint2D(double aX, double aY)
ILcd2DEditableCircleBy3Points
ILcdShape
are considered. The third dimension is left
unchanged.moveFirstIntermediatePoint2D
in interface ILcd2DEditableCircleBy3Points
aX
- the x coordinate of the point.aY
- the y coordinate of the point.public void moveSecondIntermediatePoint2D(double aX, double aY)
ILcd2DEditableCircleBy3Points
ILcdShape
are considered. The third dimension is left unchanged.moveSecondIntermediatePoint2D
in interface ILcd2DEditableCircleBy3Points
aX
- the x coordinate of the point.aY
- the y coordinate of the point.public void translateStartPoint2D(double aDeltaX, double aDeltaY)
ILcd2DEditableCircleBy3Points
translateStartPoint2D
in interface ILcd2DEditableCircleBy3Points
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.public void translateFirstIntermediatePoint2D(double aDeltaX, double aDeltaY)
ILcd2DEditableCircleBy3Points
translateFirstIntermediatePoint2D
in interface ILcd2DEditableCircleBy3Points
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.public void translateSecondIntermediatePoint2D(double aDeltaX, double aDeltaY)
ILcd2DEditableCircleBy3Points
translateSecondIntermediatePoint2D
in interface ILcd2DEditableCircleBy3Points
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.public ILcdPoint getCenter()
ILcdCircle
ILcdCircle
.getCenter
in interface ILcdCircle
ILcdCircle
.public double getRadius()
ILcdCircle
ILcdCircle
.getRadius
in interface ILcdCircle
ILcdCircle
.public ILcdPoint getStartPoint()
ILcdCurve
This is equivalent to computePointSFCT(0)
.
getStartPoint
in interface ILcdCurve
public ILcdPoint getEndPoint()
ILcdCurve
This is equivalent to computePointSFCT(1)
.
getEndPoint
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 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 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 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 String getInterpolation()
ILcdCurve.INTERPOLATION_CIRCLE_BY_3POINTS
.getInterpolation
in interface ILcdCircleBy3Points
getInterpolation
in interface ILcdCurve
INTERPOLATION_CIRCLE_BY_3POINTS
.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 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 getFocusPoint()
ILcdShape
ILcdShape
.getFocusPoint
in interface ILcdShape
ILcdShape
.public boolean contains2D(double aX, double aY)
ILcdShape
ILcdShape
contains the given point in
the 2D space. Only the first two dimensions of the ILcdShape
are considered.contains2D
in interface ILcdShape
aX
- the x coordinate of the point.aY
- the y coordinate of the point.public void translate2D(double aDeltaX, double aDeltaY)
ILcd2DEditableShape
ILcd2DEditableShape
from its current position over the given translation
vector in the 2D space. Only the first two dimensions of the ILcdShape
are considered.
The third dimension is left unchanged.translate2D
in interface ILcd2DEditableShape
aDeltaX
- the x coordinate of the translation vector.aDeltaY
- the y coordinate of the translation vector.public ILcdBounds getBounds()
ILcdBounded
ILcdBounds
by which the geometry of this ILcdBounded
object
is bounded.
If the geometry does not allow retrieving valid bounds (for example a polyline with 0 points)
the return value is unspecified.
It is highly recommended to return an undefined
bounds.
You can create undefined bounds using the default constructors
of TLcdLonLatBounds
or TLcdXYBounds
.
getBounds
in interface ILcdBounded
ILcdBounds
by which the geometry of this ILcdBounded
object
is bounded.public void insertIntoCache(Object aKey, Object aObject)
ILcdCache
insertIntoCache
in interface ILcdCache
aKey
- the key Object that will be used to identify the Object.
The key must therefore be a unique identifier, typically the caller
itself: insertIntoCache(this, ...)
.aObject
- the Object to be cached.public Object getCachedObject(Object aKey)
ILcdCache
getCachedObject
in interface ILcdCache
aKey
- the key Object that was used for storing the cache Object.public Object removeCachedObject(Object aKey)
ILcdCache
removeCachedObject
in interface ILcdCache
aKey
- the key Object that was used for storing the cache Object.public void clearCache()
ILcdCache
clearCache
in interface ILcdCache
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 ALcdShape
Object.clone()
public boolean equals(Object o)
ALcdShape
public int hashCode()
ALcdShape
ALcdShape.equals(Object)
method.
Extensions should refine this implementation, based on their properties.