public class TLcdXYCircle extends ALcd2DEditableShape implements ILcd2DEditableCircle, ILcdRing, ILcdCache
ILcd2DEditableCircle in
the cartesian space.
It implements ILcdCache, thus providing a cache
to store expensive calculations, e.g. for painters,
to store model-world transformations. The cache is cleared whenever the shape is modified.
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 |
|---|
TLcdXYCircle()
Creates a new
TLcdXYCircle, with its center at (0, 0) and
radius 0. |
TLcdXYCircle(double aRadius)
Creates a new
TLcdXYCircle at (0, 0), with the specified radius. |
TLcdXYCircle(double aX,
double aY,
double aRadius)
Creates a new
TLcdXYCircle with the specified parameters. |
TLcdXYCircle(ILcd2DEditableCircle aCircle)
Creates a new
TLcdXYCircle, initialized to match the values of
the specified circle. |
TLcdXYCircle(ILcd2DEditablePoint aCenter)
Creates a new
TLcdXYCircle at the specified point, with radius 0. |
TLcdXYCircle(ILcd2DEditablePoint aCenter,
double aRadius)
Creates a new
TLcdXYCirclee with the specified parameters. |
| Modifier and Type | Method and Description |
|---|---|
void |
calculateBounds() |
void |
clearCache()
Clears the cache.
|
Object |
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.
|
boolean |
contains2D(double aX,
double aY)
Checks whether this
ILcdShape contains the given point in
the 2D space. |
boolean |
equals(Object aObject)
Returns whether the given object has the same class, coordinates, and
radius.
|
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 |
getFocusPoint()
Returns the focus point of this
ILcdShape. |
String |
getInterpolation()
Returns the interpolation method used by this curve,
which is
ILcdCurve.INTERPOLATION_CIRCLE_BY_CENTERPOINT. |
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 |
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.
|
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.
|
protected void |
invalidateBounds() |
void |
move2D(double aX,
double aY)
Translates this shape so that its focus point ends up at the specified
position.
|
Object |
removeCachedObject(Object aKey)
Looks up and removes the cached Object corresponding to the given key.
|
void |
setRadius(double aRadius)
Sets the radius of this
TLcdLonLatCircle to aRadius. |
String |
toString() |
void |
translate2D(double aX,
double aY)
Translates this
ILcd2DEditableShape from its current position over the given translation
vector in the 2D space. |
contains3D, move2Dcontains2D, contains3D, fromDomainObjectfinalize, getClass, notify, notifyAll, wait, wait, waitmove2Dcontains2D, contains3D, contains3Dpublic TLcdXYCircle()
TLcdXYCircle, with its center at (0, 0) and
radius 0.public TLcdXYCircle(ILcd2DEditableCircle aCircle)
TLcdXYCircle, initialized to match the values of
the specified circle.aCircle - the circle from which to copy initial values.IllegalArgumentException - if the radius is less than 0.public TLcdXYCircle(ILcd2DEditablePoint aCenter, double aRadius)
TLcdXYCirclee with the specified parameters.aCenter - the center point.aRadius - the radius of the circle.IllegalArgumentException - if the radius is less than 0.public TLcdXYCircle(double aX,
double aY,
double aRadius)
TLcdXYCircle with the specified parameters.aX - the x coordinate of the center.aY - the y coordinate of the center.aRadius - the radius of the circle.IllegalArgumentException - if the radius is less than 0.public TLcdXYCircle(double aRadius)
TLcdXYCircle at (0, 0), with the specified radius.aRadius - the radius of the circle.public TLcdXYCircle(ILcd2DEditablePoint aCenter)
TLcdXYCircle at the specified point, with radius 0.aCenter - the center of the circle.public final ILcdPoint getCenter()
ILcdCircleILcdCircle.getCenter in interface ILcdCircleILcdCircle.public final double getRadius()
ILcdCircleILcdCircle.getRadius in interface ILcdCircleILcdCircle.public void setRadius(double aRadius)
TLcdLonLatCircle to aRadius.setRadius in interface ILcd2DEditableCircleaRadius - the new radius expressed in meters. The radius has to be positive (greater than or equal to 0).IllegalArgumentException - if the radius is less than 0.public ILcdPoint getFocusPoint()
ILcdShapeILcdShape.getFocusPoint in interface ILcdShapeILcdShape.public ILcdBounds getBounds()
ILcdBoundedILcdBounds 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 ILcdBoundedILcdBounds by which the geometry of this ILcdBounded object
is bounded.protected void invalidateBounds()
public void calculateBounds()
public boolean contains2D(double aX,
double aY)
ILcdShapeILcdShape contains the given point in
the 2D space. Only the first two dimensions of the ILcdShape
are considered.contains2D in interface ILcdShapeaX - the x coordinate of the point.aY - the y coordinate of the point.public void move2D(double aX,
double aY)
ALcd2DEditableShapemove2D in interface ILcd2DEditableShapemove2D in class ALcd2DEditableShapeaX - the x coordinate of the point.aY - the y coordinate of the point.public void translate2D(double aX,
double aY)
ILcd2DEditableShapeILcd2DEditableShape 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 ILcd2DEditableShapeaX - the x coordinate of the translation vector.aY - the y coordinate of the translation vector.public ILcdPoint getStartPoint()
ILcdCurve
This is equivalent to computePointSFCT(0).
getStartPoint in interface ILcdCurvepublic ILcdPoint getEndPoint()
ILcdCurve
This is equivalent to computePointSFCT(1).
getEndPoint in interface ILcdCurvepublic double getStartTangent2D()
ILcdCurveThe tangent orientation is from the start point towards the rest of the shape.
This is the same as getTangent2D(0).
getStartTangent2D in interface ILcdCurvepublic double getEndTangent2D()
ILcdCurveThe tangent orientation is from the end point, away from the curve before it.
This is the same as getTangent2D(1).
getEndTangent2D in interface ILcdCurvepublic 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 ILcdCurveaParam - a value of the closed interval [0,1]public double getLength2D(double aParam1,
double aParam2)
ILcdCurveaParam1 == 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 ILcdCurveaParam1 - a value of the closed interval [0,1]aParam2 - a value of the closed interval [0,1]public String getInterpolation()
ILcdCurve.INTERPOLATION_CIRCLE_BY_CENTERPOINT.getInterpolation in interface ILcdCurveINTERPOLATION_CIRCLE_BY_CENTERPOINT.public void computePointSFCT(double aParam,
ILcd3DEditablePoint aPointSFCT)
ILcdCurveILcdCurve.getStartPoint().ILcdCurve.getEndPoint().computePointSFCT in interface ILcdCurveaParam - a value of the closed interval [0,1]aPointSFCT - the point to store the computed curve point inpublic void insertIntoCache(Object aKey, Object aObject)
ILcdCacheinsertIntoCache in interface ILcdCacheaKey - 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)
ILcdCachegetCachedObject in interface ILcdCacheaKey - the key Object that was used for storing the cache Object.public Object removeCachedObject(Object aKey)
ILcdCacheremoveCachedObject in interface ILcdCacheaKey - the key Object that was used for storing the cache Object.public void clearCache()
ILcdCacheclearCache in interface ILcdCachepublic Object clone()
clone in interface ILcdCloneableclone in class ALcdShapeObject.clone()public boolean equals(Object aObject)
public int hashCode()
ALcdShapeALcdShape.equals(Object) method.
Extensions should refine this implementation, based on their properties.public int getLineSegmentIntersectionCount(ILcdPoint aP1, ILcdPoint aP2)
ILcdCurveThis 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 ILcdCurveaP1 - the first point of the line segmentaP2 - the second point of the line segment