Package org.eclipse.gef.geometry.planar

Class PolyBezier

java.lang.Object
org.eclipse.gef.geometry.planar.PolyBezier
All Implemented Interfaces:
Serializable, Cloneable, ICurve, IGeometry, IRotatable<PolyBezier>, IScalable<PolyBezier>, ITranslatable<PolyBezier>
public class PolyBezier extends Object implements ICurve, ITranslatable<PolyBezier>, IScalable<PolyBezier>, IRotatable<PolyBezier>
A PolyBezier is an ICurve which consists of one or more connected BezierCurves.
See Also:

  • Field Details

    • INTERPOLATION_CURVE_WIDTH_COEFFICIENT

      public static final double INTERPOLATION_CURVE_WIDTH_COEFFICIENT
      The default curve width coefficient used in interpolateCubic(...) methods.
      See Also:

  • Constructor Details

  • Method Details

    • interpolateCubic

      public static PolyBezier interpolateCubic(Angle startAngle, double startLength, Angle endAngle, double endLength, double curveWidthCoefficient, Point... wayPoints)

      Creates a PolyBezier consisting of continuous CubicCurve segments through the given Points.

      The start angle and start length constrain the curve. Way points are added to assure the curve starts off with a straight line of said length in the direction specified by said angle.

      The end angle and end length constrain the curve. Way points are added to assure the curve ends in a straight line of said length in the direction specified by said angle.

      Parameters:
      startAngle - start direction of the curve
      startLength - length of the straight start segment of the curve
      endAngle - end direction of the curve
      endLength - length of the straight end segment of the curve
      curveWidthCoefficient - value in the range ]0;+Inf[ that adjusts the width of the curve. A value smaller than 1 sharpens the curve and a value greater than 1 thickens the curve.
      wayPoints - The array of Points which lie on the resulting PolyBezier.
      Returns:
      PolyBezier consisting of continuous CubicCurve segments through the given Points

    • interpolateCubic

      public static PolyBezier interpolateCubic(double... coordinates)
      Creates a PolyBezier with continuous CubicCurve segments through the given Points.
      Parameters:
      coordinates - the coordinates of the points that are to be interpolated.
      Returns:
      PolyBezier with continuous CubicCurve segments through the points, specified via the given coordinates.
      See Also:

    • interpolateCubic

      public static PolyBezier interpolateCubic(double curveWidthCoefficient, Point... points)
      Creates a PolyBezier with continuous CubicCurve segments through the given Points.
      Parameters:
      curveWidthCoefficient - value in the range ]0;+Inf[ that adjusts the width of the curve. A value smaller than one sharpens the curve and a value greater than one thickens the curve.
      points - The array of Points which lie on the resulting PolyBezier.
      Returns:
      PolyBezier with continuous CubicCurve segments through the given Points.

    • interpolateCubic

      public static PolyBezier interpolateCubic(Point... points)
      Parameters:
      points - The array of Points which lie on the resulting PolyBezier.
      Returns:
      PolyBezier with continuous CubicCurve segments through the given Points.
      See Also:

    • contains

      public boolean contains(Point p)
      Description copied from interface: IGeometry
      Returns whether the given Point is contained within this IGeometry. This includes the case that the Point lies on the border of this IGeometry.
      Specified by:
      contains in interface IGeometry
      Parameters:
      p - The Point being tested for containment
      Returns:
      true if the Point is contained within this IGeometry, false otherwise.

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

    • getBounds

      public Rectangle getBounds()
      Description copied from interface: IGeometry
      Returns the smallest Rectangle fully enclosing this IGeometry.
      Specified by:
      getBounds in interface IGeometry
      Returns:
      A new Rectangle object that fully encloses this IGeometry

    • getCopy

      public PolyBezier getCopy()
      Description copied from interface: IGeometry
      Returns a new identical copy of this IGeometry.
      Specified by:
      getCopy in interface IGeometry
      Returns:
      a copy identical to this IGeometry

    • getIntersections

      public Point[] getIntersections(ICurve c)
      Description copied from interface: ICurve
      Returns the points of intersection between this ICurve and the given ICurve.
      Specified by:
      getIntersections in interface ICurve
      Parameters:
      c - The ICurve to compute intersection points with.
      Returns:
      The points of intersection.

    • getOverlaps

      public ICurve[] getOverlaps(ICurve c)
      Description copied from interface: ICurve
      Returns the curve segments at which this ICurve and the given ICurve overlap.
      Specified by:
      getOverlaps in interface ICurve
      Parameters:
      c - The curve to compute overlaps with.
      Returns:
      The segments where both curves overlap.

    • getP1

      public Point getP1()
      Description copied from interface: ICurve
      Returns a Point representing the start point of this ICurve.
      Specified by:
      getP1 in interface ICurve
      Returns:
      a new Point with the coordinates of the ICurve's start point.

    • getP2

      public Point getP2()
      Description copied from interface: ICurve
      Returns a Point representing the end point of this ICurve .
      Specified by:
      getP2 in interface ICurve
      Returns:
      a new Point with the coordinates of the ICurve's end point.

    • getProjection

      public Point getProjection(Point reference)
      Description copied from interface: ICurve
      Returns a projection of the given reference Point onto this ICurve, i.e. a Point on this ICurve that is closest to the given reference Point. Note, that
      Specified by:
      getProjection in interface ICurve
      Parameters:
      reference - The reference Point for which to return the projection.
      Returns:
      The projection of the given reference Point onto this ICurve.

    • getRotatedCCW

      public PolyBezier getRotatedCCW(Angle angle)
      Description copied from interface: IRotatable
      Rotates the calling object by specified Angle counter-clock-wise (CCW) around its center Point. Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      Returns:
      an IGeometry representing the result of the rotation

    • getRotatedCCW

      public PolyBezier getRotatedCCW(Angle angle, double cx, double cy)
      Description copied from interface: IRotatable
      Rotates the calling object by the specified Angle counter-clock-wise (CCW) around the specified center Point (cx, cy). Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      cx - x-coordinate of the relative Point for the rotation
      cy - y-coordinate of the relative Point for the rotation
      Returns:
      an IGeometry representing the result of the rotation

    • getRotatedCCW

      public PolyBezier getRotatedCCW(Angle angle, Point center)
      Description copied from interface: IRotatable
      Rotates the calling object by the specified Angle counter-clock-wise (CCW) around the specified center Point. Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      center - relative Point for the rotation
      Returns:
      an IGeometry representing the result of the rotation

    • getRotatedCW

      public PolyBezier getRotatedCW(Angle angle)
      Description copied from interface: IRotatable
      Rotates the calling object by specified Angle clock-wise (CW) around its center Point. Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      Returns:
      an IGeometry representing the result of the rotation

    • getRotatedCW

      public PolyBezier getRotatedCW(Angle angle, double cx, double cy)
      Description copied from interface: IRotatable
      Rotates the calling object by the specified Angle clock-wise (CW) around the specified center Point (cx, cy). Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      cx - x-coordinate of the relative Point for the rotation
      cy - y-coordinate of the relative Point for the rotation
      Returns:
      an IGeometry representing the result of the rotation

    • getRotatedCW

      public PolyBezier getRotatedCW(Angle angle, Point center)
      Description copied from interface: IRotatable
      Rotates the calling object by the specified Angle clock-wise (CW) around the specified center Point. Does not necessarily return an object of the same type.
      Specified by:
      getRotatedCW in interface IRotatable<PolyBezier>
      Parameters:
      angle - rotation Angle
      center - relative Point for the rotation
      Returns:
      an IGeometry representing the result of the rotation

    • getScaled

      public PolyBezier getScaled(double factor)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factor relative to its center Point.
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      Returns:
      the new, scaled object

    • getScaled

      public PolyBezier getScaled(double fx, double fy)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factors relative to its center Point.
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      Returns:
      the new, scaled object

    • getScaled

      public PolyBezier getScaled(double factor, double cx, double cy)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factor relative to the given center Point (cx, cy).
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      cx - x-coordinate of the relative Point for the scaling
      cy - y-coordinate of the relative Point for the scaling
      Returns:
      the new, scaled object

    • getScaled

      public PolyBezier getScaled(double fx, double fy, double cx, double cy)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factors relative to the given center Point (cx, cy).
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      cx - x-coordinate of the relative Point for the scaling
      cy - y-coordinate of the relative Point for the scaling
      Returns:
      the new, scaled object

    • getScaled

      public PolyBezier getScaled(double fx, double fy, Point center)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factors relative to the given center Point.
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      center - relative Point for the scaling
      Returns:
      the new, scaled object

    • getScaled

      public PolyBezier getScaled(double factor, Point center)
      Description copied from interface: IScalable
      Scales a copy of the calling object by the given factor relative to the given center Point.
      Specified by:
      getScaled in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      center - relative Point for the scaling
      Returns:
      the new, scaled object

    • getTransformed

      public PolyBezier getTransformed(AffineTransform t)
      Default implementation returning a transformed Path representation of this IGeometry. Subclasses may override this method to return a more specific representation.
      Specified by:
      getTransformed in interface IGeometry
      Parameters:
      t - The AffineTransform to be applied
      Returns:
      a transformed Path representation of this IGeometry

    • getTranslated

      public PolyBezier getTranslated(double dx, double dy)
      Description copied from interface: ITranslatable
      Translates a copy of this object by the given values in x and y direction.
      Specified by:
      getTranslated in interface ITranslatable<PolyBezier>
      Parameters:
      dx - x-translation
      dy - y-translation
      Returns:
      a new, translated object

    • getTranslated

      public PolyBezier getTranslated(Point d)
      Description copied from interface: ITranslatable
      Translates a copy of this object by the given Point.
      Specified by:
      getTranslated in interface ITranslatable<PolyBezier>
      Parameters:
      d - translation Point
      Returns:
      a new, translated object

    • getX1

      public double getX1()
      Description copied from interface: ICurve
      Returns the start Point's x coordinate.
      Specified by:
      getX1 in interface ICurve
      Returns:
      the start Point's x coordinate

    • getX2

      public double getX2()
      Description copied from interface: ICurve
      Returns the end Point's x coordinate.
      Specified by:
      getX2 in interface ICurve
      Returns:
      the end Point's x coordinate

    • getY1

      public double getY1()
      Description copied from interface: ICurve
      Returns the start Point's y coordinate.
      Specified by:
      getY1 in interface ICurve
      Returns:
      the start Point's y coordinate

    • getY2

      public double getY2()
      Description copied from interface: ICurve
      Returns the end Point's y coordinate.
      Specified by:
      getY2 in interface ICurve
      Returns:
      the end Point's y coordinate

    • intersects

      public boolean intersects(ICurve c)
      Description copied from interface: ICurve
      Tests if this ICurve and the given ICurve intersect, i.e. whether a final set of intersection points exists. Two curves intersect if they touch (see IGeometry.touches(IGeometry)) but do not overlap (see ICurve.overlaps(ICurve)).
      Specified by:
      intersects in interface ICurve
      Parameters:
      c - The ICurve to test for intersections.
      Returns:
      true if they intersect, false otherwise

    • overlaps

      public boolean overlaps(ICurve c)
      Description copied from interface: ICurve
      Tests if this ICurve and the given ICurve overlap, i.e. whether an infinite set of intersection points exists. Two curves overlap if they touch (see IGeometry.touches(IGeometry)) but not intersect (see ICurve.intersects(ICurve)).
      Specified by:
      overlaps in interface ICurve
      Parameters:
      c - The ICurve to test for overlap.
      Returns:
      true if they overlap, false otherwise

    • rotateCCW

      public PolyBezier rotateCCW(Angle angle)
      Directly rotates this PolyBezier counter-clock-wise around its center Point by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      Returns:
      this for convenience

    • rotateCCW

      public PolyBezier rotateCCW(Angle angle, double cx, double cy)
      Directly rotates this PolyBezier counter-clock-wise around the given point (specified by cx and cy) by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      cx - x-coordinate of the Point to rotate around
      cy - y-coordinate of the Point to rotate around
      Returns:
      this for convenience

    • rotateCCW

      public PolyBezier rotateCCW(Angle angle, Point center)
      Directly rotates this PolyBezier counter-clock-wise around the given Point by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      center - Point to rotate around
      Returns:
      this for convenience

    • rotateCW

      public PolyBezier rotateCW(Angle angle)
      Directly rotates this PolyBezier clock-wise around its center Point by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      Returns:
      this for convenience

    • rotateCW

      public PolyBezier rotateCW(Angle angle, double cx, double cy)
      Directly rotates this PolyBezier clock-wise around the given point (specified by cx and cy) by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      cx - x-coordinate of the Point to rotate around
      cy - y-coordinate of the Point to rotate around
      Returns:
      this for convenience

    • rotateCW

      public PolyBezier rotateCW(Angle angle, Point center)
      Directly rotates this PolyBezier clock-wise around the given Point by the given Angle. Direct adaptation means, that this PolyBezier is modified in-place.
      Parameters:
      angle - rotation Angle
      center - Point to rotate around
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double factor)
      Description copied from interface: IScalable
      Scales the calling object by the given factor relative to its center Point.
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double fx, double fy)
      Description copied from interface: IScalable
      Scales the calling object by the given factors relative to the given center Point.
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double factor, double cx, double cy)
      Description copied from interface: IScalable
      Scales the calling object by the given factor relative to the given center Point (cx, cy).
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      cx - x-coordinate of the relative Point for the scaling
      cy - y-coordinate of the relative Point for the scaling
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double fx, double fy, double cx, double cy)
      Description copied from interface: IScalable
      Scales the calling object by the given factors relative to the given center Point (cx, cy).
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      cx - x-coordinate of the relative Point for the scaling
      cy - y-coordinate of the relative Point for the scaling
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double fx, double fy, Point center)
      Description copied from interface: IScalable
      Scales the calling object by the given factors relative to the given center Point.
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      fx - x-scale-factor
      fy - y-scale-factor
      center - relative Point for the scaling
      Returns:
      this for convenience

    • scale

      public PolyBezier scale(double factor, Point center)
      Description copied from interface: IScalable
      Scales the calling object by the given factor relative to the given center Point.
      Specified by:
      scale in interface IScalable<PolyBezier>
      Parameters:
      factor - scale-factor
      center - relative Point for the scaling
      Returns:
      this for convenience

    • toBezier

      public BezierCurve[] toBezier()
      Description copied from interface: ICurve
      Computes a list of BezierCurves that approximate the ICurve. For example, a Line or a BezierCurve in general could return a list with the curve itself as its only element. But an Ellipse or an Arc may return a list of consecutive BezierCurves which approximate the ICurve.
      Specified by:
      toBezier in interface ICurve
      Returns:
      a list of BezierCurves that approximate the ICurve

    • toPath

      public Path toPath()
      Description copied from interface: IGeometry
      Converts this IGeometry into a Path representation.
      Specified by:
      toPath in interface IGeometry
      Returns:
      A new Path representation for this IGeometry.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • translate

      public PolyBezier translate(double dx, double dy)
      Description copied from interface: ITranslatable
      Translates the object by the given values in x and y direction.
      Specified by:
      translate in interface ITranslatable<PolyBezier>
      Parameters:
      dx - x-translation
      dy - y-translation
      Returns:
      this for convenience

    • translate

      public PolyBezier translate(Point d)
      Description copied from interface: ITranslatable
      Translates the object by the given Point.
      Specified by:
      translate in interface ITranslatable<PolyBezier>
      Parameters:
      d - translation Point
      Returns:
      this for convenience

    • clone

      public Object clone()
      Overridden with public visibility as recommended within Cloneable .
      Overrides:
      clone in class Object

    • hashCode

      public final int hashCode()
      Overrides:
      hashCode in class Object
      See Also:

    • touches

      public boolean touches(IGeometry g)
      Description copied from interface: IGeometry
      Returns true if the input IGeometry touches this IGeometry, i.e. there is at least one common point.
      Specified by:
      touches in interface IGeometry
      Parameters:
      g - The IGeometry for the intersection test
      Returns:
      true if the input IGeometry and this IGeometry have at least one common point.