org.eclipse.gef.geometry.planar

Class Polygon

java.lang.Object

org.eclipse.gef.geometry.planar.Polygon

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, IGeometry, IRotatable<Polygon>, IScalable<Polygon>, IShape, ITranslatable<Polygon>

public class Polygon
extends java.lang.Object
implements IShape

Represents the geometric shape of a convex polygon. Note that while all manipulations (e.g. within shrink, expand) within this class are based on double precision, all comparisons (e.g. within contains, intersects, equals, etc.) are based on a limited precision (with an accuracy defined within PrecisionUtils) to compensate for rounding effects.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Polygon(double... coordinates) Constructs a new Polygon from a even-numbered sequence of coordinates.
Polygon(Point... points) Constructs a new Polygon from the given sequence of Point s.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Overridden with public visibility as recommended within Cloneable .
boolean	contains(double x, double y) Checks whether the point that is represented by its x- and y-coordinates is contained within this Polygon.
boolean	contains(IGeometry g) Tests whether the given IGeometry is fully contained by this IShape.
boolean	contains(Line line) Checks whether the given Line is fully contained within this Polygon.
boolean	contains(Point p) Returns whether the given Point is contained within this IGeometry.
boolean	contains(Polygon p) Checks whether the given Polygon is fully contained within this Polygon.
boolean	contains(Polyline p) Tests if the given Polyline p is contained in this Polygon.
boolean	contains(Rectangle r) Checks whether the given Rectangle is fully contained within this Polygon.
boolean	equals(java.lang.Object o)
boolean	equals(Point[] points) Checks whether this Polygon and the one that is indirectly given via the given array of points are regarded to be equal.
double	getArea() Computes the area of this Polygon.
Rectangle	getBounds() Returns the smallest Rectangle fully enclosing this IGeometry.
Point	getCentroid() Computes the centroid of this AbstractPointListBasedGeometry.
double[]	getCoordinates() Returns a double array which represents the sequence of coordinates of the Points that make up this AbstractPointListBasedGeometry.
Polygon	getCopy() Returns a copy of this Polygon, which is made up by the same points.
Polyline	getOutline() Returns an ICurve representing the outline of this IShape .
Line[]	getOutlineSegments() Returns a sequence of Lines, representing the segments that are obtained by linking each two successive point of this Polygon (including the last and the first one).
Point[]	getPoints() Returns a copy of the Points that make up this AbstractPointListBasedGeometry.
T	getRotatedCCW(Angle alpha) Rotates the calling object by specified Angle counter-clock-wise (CCW) around its center Point.
T	getRotatedCCW(Angle angle, double cx, double cy) Rotates the calling object by the specified Angle counter-clock-wise (CCW) around the specified center Point (cx, cy).
T	getRotatedCCW(Angle alpha, Point center) Rotates the calling object by the specified Angle counter-clock-wise (CCW) around the specified center Point.
T	getRotatedCW(Angle alpha) Rotates the calling object by specified Angle clock-wise (CW) around its center Point.
T	getRotatedCW(Angle angle, double cx, double cy) Rotates the calling object by the specified Angle clock-wise (CW) around the specified center Point (cx, cy).
T	getRotatedCW(Angle alpha, Point center) Rotates the calling object by the specified Angle clock-wise (CW) around the specified center Point.
T	getScaled(double factor) Scales a copy of the calling object by the given factor relative to its center Point.
T	getScaled(double factorX, double factorY) Scales a copy of the calling object by the given factors relative to its center Point.
T	getScaled(double factor, double cx, double cy) Scales a copy of the calling object by the given factor relative to the given center Point (cx, cy).
T	getScaled(double fx, double fy, double cx, double cy) Scales a copy of the calling object by the given factors relative to the given center Point (cx, cy).
T	getScaled(double factorX, double factorY, Point center) Scales a copy of the calling object by the given factors relative to the given center Point.
T	getScaled(double factor, Point center) Scales a copy of the calling object by the given factor relative to the given center Point.
double	getSignedArea() Computes the signed area of this Polygon.
Polygon	getTransformed(AffineTransform t) Default implementation returning a transformed Path representation of this IGeometry.
T	getTranslated(double dx, double dy) Translates a copy of this object by the given values in x and y direction.
T	getTranslated(Point pt) Translates a copy of this object by the given Point.
Polygon[]	getTriangulation() Naive, recursive ear-clipping algorithm to triangulate this simple, planar Polygon.
int	hashCode()
T	rotateCCW(Angle alpha) Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around its centroid (see getCentroid()).
T	rotateCCW(Angle alpha, double cx, double cy) Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around the Point specified by the passed-in x and y coordinates.
T	rotateCCW(Angle alpha, Point center) Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around the given Point.
T	rotateCW(Angle alpha) Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around its centroid (see getCentroid()).
T	rotateCW(Angle alpha, double cx, double cy) Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around the Point specified by the passed-in x and y coordinates.
T	rotateCW(Angle alpha, Point center) Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around the given Point.
T	scale(double factor) Scales the calling object by the given factor relative to its center Point.
T	scale(double fx, double fy) Scales the calling object by the given factors relative to the given center Point.
T	scale(double factor, double cx, double cy) Scales the calling object by the given factor relative to the given center Point (cx, cy).
T	scale(double fx, double fy, double cx, double cy) Scales the calling object by the given factors relative to the given center Point (cx, cy).
T	scale(double fx, double fy, Point center) Scales the calling object by the given factors relative to the given center Point.
T	scale(double factor, Point center) Scales the calling object by the given factor relative to the given center Point.
Path	toPath() Converts this IGeometry into a Path representation.
java.lang.String	toString()
boolean	touches(IGeometry g) Returns true if the input IGeometry touches this IGeometry, i.e. there is at least one common point.
T	translate(double dx, double dy) Translates the object by the given values in x and y direction.
T	translate(Point p) Translates the object by the given Point.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.gef.geometry.planar.IGeometry

getBounds, touches

Constructor Detail

Polygon

public Polygon(double... coordinates)

Constructs a new Polygon from a even-numbered sequence of coordinates.

Parameters:

coordinates - an alternating, even-numbered sequence of x and y coordinates, representing the Points from which the Polygon is to be created

See Also:

Polygon(Point...)

Polygon

public Polygon(Point... points)

Constructs a new Polygon from the given sequence of Point s. The Polygon that is created will be automatically closed, i.e. it will not only contain a segment between succeeding points of the sequence but as well back from the last to the first point.

Parameters:

points - a sequence of points, from which the Polygon is to be created.

Method Detail

contains

public boolean contains(double x,
                        double y)

Checks whether the point that is represented by its x- and y-coordinates is contained within this Polygon.

Parameters:

x - the x-coordinate of the point to test

y - the y-coordinate of the point to test

Returns:

true if the point represented by its coordinates if contained within this Polygon, false otherwise

contains

public boolean contains(IGeometry g)

Description copied from interface: IShape

Tests whether the given IGeometry is fully contained by this IShape.

Specified by:

contains in interface IShape

Parameters:

g - The IGeometry to test for containment

Returns:

true if the given IGeometry is fully contained by this IShape, false otherwise.

contains

public boolean contains(Line line)

Checks whether the given Line is fully contained within this Polygon.

Parameters:

line - The Line to test for containment

Returns:

true if the given Line is fully contained, false otherwise

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.

See Also:

IGeometry.contains(Point)

contains

public boolean contains(Polygon p)

Checks whether the given Polygon is fully contained within this Polygon.

Parameters:

p - The Polygon to test for containment

Returns:

true if the given Polygon is fully contained, false otherwise.

contains

public boolean contains(Polyline p)

Tests if the given Polyline p is contained in this Polygon.

Parameters:

p - The Polyline to test for containment.

Returns:

true if it is contained, false otherwise

contains

public boolean contains(Rectangle r)

Checks whether the given Rectangle is fully contained within this Polygon.

Parameters:

r - the Rectangle to test for containment

Returns:

true if the given Rectangle is fully contained, false otherwise.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(Point[] points)

Checks whether this Polygon and the one that is indirectly given via the given array of points are regarded to be equal. The Polygons will be regarded equal, if they are characterized by the same segments. As a Polygon is always regarded to be closed, the list of points may not have to correspond in each index value, they may also be shifted by a certain offset. Moreover, the vertices of two equally Polygons may be reverted in order.

Parameters:

points - an array of Point characterizing a Polygon to be checked for equality

Returns:

true if the sequence of points that characterize this Polygon and the Polygon indirectly given via the array of points are regarded to form the same segments.

getArea

public double getArea()

Computes the area of this Polygon.

Returns:

the area of this Polygon

getCopy

public Polygon getCopy()

Returns a copy of this Polygon, which is made up by the same points.

Specified by:

getCopy in interface IGeometry

Returns:

a new Polygon with an identical set of points.

getOutline

public Polyline getOutline()

Description copied from interface: IShape

Returns an ICurve representing the outline of this IShape .

Specified by:

getOutline in interface IShape

Returns:

An ICurve representing this IShape's outline.

getOutlineSegments

public Line[] getOutlineSegments()

Returns a sequence of Lines, representing the segments that are obtained by linking each two successive point of this Polygon (including the last and the first one).

Specified by:

getOutlineSegments in interface IShape

Returns:

an array of Lines, representing the segments that make up this Polygon

getSignedArea

public double getSignedArea()

Computes the signed area of this Polygon. The sign of the area is negative for counter clockwise ordered vertices. It is positive for clockwise ordered vertices.

Returns:

the signed area of this Polygon

getTransformed

public Polygon 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

Specified by:

getTransformed in interface IShape

Parameters:

t - The AffineTransform to be applied

Returns:

a transformed Path representation of this IGeometry

See Also:

IGeometry.getTransformed(AffineTransform)

getTriangulation

public Polygon[] getTriangulation()

Naive, recursive ear-clipping algorithm to triangulate this simple, planar Polygon.

Returns:

triangulation Polygons (triangles)

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.

See Also:

IGeometry.toPath()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getBounds

public final 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

getCentroid

public Point getCentroid()

Computes the centroid of this AbstractPointListBasedGeometry. The centroid is the "center of gravity", i.e. assuming a Polygon is spanned by the Points of this AbstractPointListBasedGeometry and it is made of a material of constant density, then it is in a balanced state, if you put it on a pin that is placed exactly on its centroid.

Returns:

the center Point (or centroid) of this AbstractPointListBasedGeometry

getCoordinates

public final double[] getCoordinates()

Returns a double array which represents the sequence of coordinates of the Points that make up this AbstractPointListBasedGeometry.

Returns:

an array that alternately contains the x and y coordinates of this AbstractPointListBasedGeometry's points

getPoints

public final Point[] getPoints()

Returns a copy of the Points that make up this AbstractPointListBasedGeometry.

Returns:

an array of Points representing the Points that make up this AbstractPointListBasedGeometry

getRotatedCCW

public T getRotatedCCW(Angle alpha)

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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

alpha - rotation Angle

Returns:

an IGeometry representing the result of the rotation

getRotatedCCW

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T getRotatedCCW(Angle alpha,
                       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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

alpha - rotation Angle

center - relative Point for the rotation

Returns:

an IGeometry representing the result of the rotation

getRotatedCW

public T getRotatedCW(Angle alpha)

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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

alpha - rotation Angle

Returns:

an IGeometry representing the result of the rotation

getRotatedCW

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T getRotatedCW(Angle alpha,
                      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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

alpha - rotation Angle

center - relative Point for the rotation

Returns:

an IGeometry representing the result of the rotation

getScaled

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factor - scale-factor

Returns:

the new, scaled object

getScaled

public T getScaled(double factorX,
                   double factorY)

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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factorX - x-scale-factor

factorY - y-scale-factor

Returns:

the new, scaled object

getScaled

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T getScaled(double factorX,
                   double factorY,
                   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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factorX - x-scale-factor

factorY - y-scale-factor

center - relative Point for the scaling

Returns:

the new, scaled object

getScaled

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factor - scale-factor

center - relative Point for the scaling

Returns:

the new, scaled object

getTranslated

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

dx - x-translation

dy - y-translation

Returns:

a new, translated object

getTranslated

public T getTranslated(Point pt)

Description copied from interface: ITranslatable

Translates a copy of this object by the given Point.

Specified by:

getTranslated in interface ITranslatable<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

pt - translation Point

Returns:

a new, translated object

rotateCCW

public T rotateCCW(Angle alpha)

Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around its centroid (see getCentroid()).

Parameters:

alpha - the rotation Angle

Returns:

this for convenience

See Also:

rotateCCW(Angle, Point)

rotateCCW

public T rotateCCW(Angle alpha,
                   double cx,
                   double cy)

Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around the Point specified by the passed-in x and y coordinates.

Parameters:

alpha - the rotation Angle

cx - the x coordinate of the Point to rotate around

cy - the y coordinate of the Point to rotate around

Returns:

this for convenience

See Also:

rotateCCW(Angle, Point)

rotateCCW

public T rotateCCW(Angle alpha,
                   Point center)

Rotates this AbstractPointListBasedGeometry counter-clockwise (CCW) by the given Angle around the given Point. The rotation is done by

1. translating this AbstractPointListBasedGeometry by the negated Point center
2. rotating each Point of this AbstractPointListBasedGeometry counter-clockwise by the given Angle
3. translating this AbstractPointListBasedGeometry back by the Point center

Parameters:

alpha - the rotation Angle

center - the Point to rotate around

Returns:

this for convenience

rotateCW

public T rotateCW(Angle alpha)

Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around its centroid (see getCentroid()).

Parameters:

alpha - the rotation Angle

Returns:

this for convenience

See Also:

rotateCW(Angle, Point)

rotateCW

public T rotateCW(Angle alpha,
                  double cx,
                  double cy)

Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around the Point specified by the passed-in x and y coordinates.

Parameters:

alpha - the rotation Angle

cx - the x coordinate of the Point to rotate around

cy - the y coordinate of the Point to rotate around

Returns:

this for convenience

See Also:

rotateCW(Angle, Point)

rotateCW

public T rotateCW(Angle alpha,
                  Point center)

Rotates this AbstractPointListBasedGeometry clockwise (CW) by the given Angle around the given Point. The rotation is done by

1. translating this AbstractPointListBasedGeometry by the negated Point center
2. rotating each Point of this AbstractPointListBasedGeometry clockwise by the given Angle
3. translating this AbstractPointListBasedGeometry back by the Point center

Parameters:

alpha - the rotation Angle

center - the Point to rotate around

Returns:

this for convenience

scale

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factor - scale-factor

Returns:

this for convenience

scale

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

fx - x-scale-factor

fy - y-scale-factor

Returns:

this for convenience

scale

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

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 T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

fx - x-scale-factor

fy - y-scale-factor

center - relative Point for the scaling

Returns:

this for convenience

scale

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

factor - scale-factor

center - relative Point for the scaling

Returns:

this for convenience

translate

public T 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<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

dx - x-translation

dy - y-translation

Returns:

this for convenience

translate

public T translate(Point p)

Description copied from interface: ITranslatable

Translates the object by the given Point.

Specified by:

translate in interface ITranslatable<T extends org.eclipse.gef.geometry.planar.AbstractPointListBasedGeometry<?>>

Parameters:

p - translation Point

Returns:

this for convenience

clone

public java.lang.Object clone()

Overridden with public visibility as recommended within Cloneable .

Overrides:

clone in class java.lang.Object

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object

See Also:

Object.hashCode()

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.