Package com.luciad.shape.shape2D

Class TLcdLonLatCircularArcByBulge

java.lang.Object
com.luciad.shape.ALcdShape
com.luciad.shape.shape2D.ALcd2DEditableShape
com.luciad.shape.shape2D.TLcdLonLatCircularArcByBulge
All Implemented Interfaces:
ILcdBounded, ILcdCircularArc, ILcdCircularArcByBulge, ILcdCurve, ILcdShape, ILcd2DEditableCircularArcByBulge, ILcd2DEditableShape, ILcdCache, ILcdCloneable, Serializable, Cloneable
public class TLcdLonLatCircularArcByBulge extends ALcd2DEditableShape implements ILcd2DEditableCircularArcByBulge, ILcdCache
This class provides an implementation of ILcd2DEditableCircularArcByBulge in the geodetic space. In addition to the properties defined by ILcd2DEditableCircularArcByBulge, a TLcdLonLatArcByBulge has an ellipsoid on which it lives.

All longitude/latitude coordinates are expressed in degrees.

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.

Since:
9.0
See Also:

  • Constructor Details

    • TLcdLonLatCircularArcByBulge

      public TLcdLonLatCircularArcByBulge()
      Default constructor, with the start and end point at (0,0) and a bulge factor of 0. After creation, an ellipsoid must be set using setEllipsoid(com.luciad.geodesy.ILcdEllipsoid) in order for the shape to be usable.

    • TLcdLonLatCircularArcByBulge

      public TLcdLonLatCircularArcByBulge(ILcdEllipsoid aEllipsoid)
      Default constructor, with the start and end point at (0,0) and a bulge factor of 0.
      Parameters:
      aEllipsoid - the ellipsoid on which this shape is defined.

    • TLcdLonLatCircularArcByBulge

      public TLcdLonLatCircularArcByBulge(ILcdPoint aStartPoint, ILcdPoint aEndPoint, double aBulgeFactor, ILcdEllipsoid aEllipsoid)
      Creates a new circular arc using the given points, bulge factor and ellipsis.
      Parameters:
      aStartPoint - the start point of the arc.
      aEndPoint - the end point of the arc.
      aBulgeFactor - the bulge factor of the arc.
      aEllipsoid - the ellipsoid on which this shape is defined.

    • TLcdLonLatCircularArcByBulge

      public TLcdLonLatCircularArcByBulge(double aStartX, double aStartY, double aEndX, double aEndY, double aBulge, ILcdEllipsoid aEllipsoid)
      Creates a new circular arc using the given point coordinates, bulge factor and ellipsis.
      Parameters:
      aStartX - the X-coordinate of the arc's start point.
      aStartY - the Y-coordinate of the arc's start point.
      aEndX - the X-coordinate of the arc's end point.
      aEndY - the Y-coordinate of the arc's end point.
      aBulge - the bulge factor of the arc.
      aEllipsoid - the ellipsoid on which this shape is defined.

  • Method Details

    • getCenter

      public ILcdPoint getCenter()
      Description copied from interface: ILcdCircularArc
      Returns the center of this ILcdCircularArc.
      Specified by:
      getCenter in interface ILcdCircularArc
      Returns:
      the center of this ILcdCircularArc.

    • getRadius

      public double getRadius()
      Description copied from interface: ILcdCircularArc
      Returns the radius of this ILcdCircularArc.
      Specified by:
      getRadius in interface ILcdCircularArc
      Returns:
      the radius of this ILcdCircularArc.

    • getStartAngle

      public double getStartAngle()
      Description copied from interface: ILcdCircularArc
      Returns the start angle of this ILcdCircularArc (in degrees). The angle is measured from 3 o'clock position, positive counter-clockwise.
      Specified by:
      getStartAngle in interface ILcdCircularArc
      Returns:
      the start angle of the arc (in degrees). The angle is measured from 3 o'clock position, positive counter-clockwise.

    • getArcAngle

      public double getArcAngle()
      Description copied from interface: ILcdCircularArc
      Returns the angle over which this ILcdCircularArc extends (in degrees). The angle is positive counter-clockwise.
      Specified by:
      getArcAngle in interface ILcdCircularArc
      Returns:
      the angle over which the arc extends (in degrees). The angle is positive counter-clockwise.

    • getEllipsoid

      public ILcdEllipsoid getEllipsoid()
      Returns:
      the ellipsoid of this TLcdLonLatArcByBulge.

    • setEllipsoid

      public void setEllipsoid(ILcdEllipsoid aEllipsoid)
      Sets the ellipsoid of this TLcdLonLatArcByBulge.
      Parameters:
      aEllipsoid - the new ellipsoid.

    • getFocusPoint

      public ILcdPoint getFocusPoint()
      Description copied from interface: ILcdShape
      Returns the focus point of this ILcdShape.
      Specified by:
      getFocusPoint in interface ILcdShape
      Returns:
      the focus point of this ILcdShape.

    • contains2D

      public boolean contains2D(double aX, double aY)
      Description copied from interface: ILcdShape
      Checks whether this ILcdShape contains the given point in the 2D space. Only the first two dimensions of the ILcdShape are considered.
      Specified by:
      contains2D in interface ILcdShape
      Parameters:
      aX - the x coordinate of the point.
      aY - the y coordinate of the point.
      Returns:
      the boolean result of the containment test.

    • getBounds

      public ILcdBounds getBounds()
      Description copied from interface: ILcdBounded
      Returns the 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.

      Specified by:
      getBounds in interface ILcdBounded
      Returns:
      the ILcdBounds by which the geometry of this ILcdBounded object is bounded.

    • translate2D

      public void translate2D(double aDeltaX, double aDeltaY)
      Description copied from interface: ILcd2DEditableShape
      Translates this 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.
      Specified by:
      translate2D in interface ILcd2DEditableShape
      Parameters:
      aDeltaX - the x coordinate of the translation vector.
      aDeltaY - the y coordinate of the translation vector.

    • getBulge

      public double getBulge()
      Description copied from interface: ILcdCircularArcByBulge
      Returns the bulge factor of this arc. The bulge factor is the ratio of (1) the distance between the arc midpoint and the center of the arc's chord, and (2) half the length of the arc's chord. The sign of the bulge indicates whether the midpoint is on the left side (positive) or right side (negative) of the vector from start to end point. So a bulge factor with an absolute value of 1 means a half-circle, smaller than 1 means a less bulging arc and larger than 1 means an arc that bulges out in the start and end point.
      Specified by:
      getBulge in interface ILcdCircularArcByBulge
      Returns:
      the bulge factor of this arc.

    • setBulge

      public void setBulge(double aBulge)
      Description copied from interface: ILcd2DEditableCircularArcByBulge
      Sets the bulge factor to the given value.
      Specified by:
      setBulge in interface ILcd2DEditableCircularArcByBulge
      Parameters:
      aBulge - the bulge factor.
      See Also:

    • moveStartPoint2D

      public void moveStartPoint2D(double aX, double aY)
      Description copied from interface: ILcd2DEditableCircularArcByBulge
      Moves the start point to the given point in the 2D space. Only the first two dimensions of the ILcdShape are considered. The third dimension is left unchanged.
      Specified by:
      moveStartPoint2D in interface ILcd2DEditableCircularArcByBulge
      Parameters:
      aX - the x coordinate of the point.
      aY - the y coordinate of the point.

    • moveEndPoint2D

      public void moveEndPoint2D(double aX, double aY)
      Description copied from interface: ILcd2DEditableCircularArcByBulge
      Moves the end point to the given point in the 2D space. Only the first two dimensions of the ILcdShape are considered. The third dimension is left unchanged.
      Specified by:
      moveEndPoint2D in interface ILcd2DEditableCircularArcByBulge
      Parameters:
      aX - the x coordinate of the point.
      aY - the y coordinate of the point.

    • translateStartPoint2D

      public void translateStartPoint2D(double aDeltaX, double aDeltaY)
      Description copied from interface: ILcd2DEditableCircularArcByBulge
      Translates the start point 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.
      Specified by:
      translateStartPoint2D in interface ILcd2DEditableCircularArcByBulge
      Parameters:
      aDeltaX - the x coordinate of the translation vector.
      aDeltaY - the y coordinate of the translation vector.

    • translateEndPoint2D

      public void translateEndPoint2D(double aDeltaX, double aDeltaY)
      Description copied from interface: ILcd2DEditableCircularArcByBulge
      Translates the end point 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.
      Specified by:
      translateEndPoint2D in interface ILcd2DEditableCircularArcByBulge
      Parameters:
      aDeltaX - the x coordinate of the translation vector.
      aDeltaY - the y coordinate of the translation vector.

    • getStartPoint

      public ILcdPoint getStartPoint()
      Description copied from interface: ILcdCurve
      Retrieves the start point of the curve.

      This is equivalent to computePointSFCT(0).

      Specified by:
      getStartPoint in interface ILcdCurve
      Returns:
      the start point of the curve

    • getEndPoint

      public ILcdPoint getEndPoint()
      Description copied from interface: ILcdCurve
      Retrieves the end point of the curve.

      This is equivalent to computePointSFCT(1).

      Specified by:
      getEndPoint in interface ILcdCurve
      Returns:
      the end 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 interface ILcdCurve
      Returns:
      the curve's angle in the start point

    • 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 interface ILcdCurve
      Returns:
      the curve's angle in the end 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.

      Specified by:
      getTangent2D in interface ILcdCurve
      Parameters:
      aParam - a value of the closed interval [0,1]
      Returns:
      the curve's angle in the point defined by the given parameter

    • 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 interface ILcdCurve
      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.

    • getInterpolation

      public String getInterpolation()
      Returns the interpolation method used by this curve, which is ILcdCurve.INTERPOLATION_CIRCULARARC_BY_BULGE.
      Specified by:
      getInterpolation in interface ILcdCircularArc
      Specified by:
      getInterpolation in interface ILcdCircularArcByBulge
      Specified by:
      getInterpolation in interface ILcdCurve
      Returns:
      the interpolation method used by this curve, which is INTERPOLATION_CIRCULARARC_BY_BULGE.

    • computePointSFCT

      public void computePointSFCT(double aParam, ILcd3DEditablePoint aPointSFCT)
      Description copied from interface: ILcdCurve
      Computes a point of the curve, defined by the given parameter.
      Specified by:
      computePointSFCT in interface ILcdCurve
      Parameters:
      aParam - a value of the closed interval [0,1]
      aPointSFCT - the point to store the computed curve point in

    • insertIntoCache

      public void insertIntoCache(Object aKey, Object aObject)
      Description copied from interface: ILcdCache
      Inserts a cache Object corresponding to the given key Object.
      Specified by:
      insertIntoCache in interface ILcdCache
      Parameters:
      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.

    • getCachedObject

      public Object getCachedObject(Object aKey)
      Description copied from interface: ILcdCache
      Looks up and returns the cached Object corresponding to the given key.
      Specified by:
      getCachedObject in interface ILcdCache
      Parameters:
      aKey - the key Object that was used for storing the cache Object.
      Returns:
      the cached Object, or null if there is no Object corresponding to the given key.

    • removeCachedObject

      public Object removeCachedObject(Object aKey)
      Description copied from interface: ILcdCache
      Looks up and removes the cached Object corresponding to the given key.
      Specified by:
      removeCachedObject in interface ILcdCache
      Parameters:
      aKey - the key Object that was used for storing the cache Object.
      Returns:
      the cached Object, or null if there was no Object corresponding to the given key.

    • clearCache

      public void clearCache()
      Description copied from interface: ILcdCache
      Clears the cache.
      Specified by:
      clearCache in interface ILcdCache

    • clone

      public Object clone()
      Description copied from class: ALcdShape
      Creates and returns a copy of this object, by delegating to 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.
      Specified by:
      clone in interface ILcdCloneable
      Overrides:
      clone in class ALcdShape
      See Also:

    • equals

      public boolean equals(Object o)
      Description copied from class: ALcdShape
      An object is considered equal to this shape if it has the same class. Extensions should refine this comparison, based on their properties.
      Overrides:
      equals in class ALcdShape

    • hashCode

      public int hashCode()
      Description copied from class: ALcdShape
      The hash code of this shape is the hash code of its class, in order to be consistent with the ALcdShape.equals(Object) method. Extensions should refine this implementation, based on their properties.
      Overrides:
      hashCode in class ALcdShape

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getLineSegmentIntersectionCount

      public int getLineSegmentIntersectionCount(ILcdPoint aP1, ILcdPoint aP2)
      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 interface ILcdCurve
      Parameters:
      aP1 - the first point of the line segment
      aP2 - the second point of the line segment
      Returns:
      the number of intersections between the curve and the line segment