org.jdelaunay.delaunay.geometries

Class DPoint

java.lang.Object

org.jdelaunay.delaunay.geometries.Element

org.jdelaunay.delaunay.geometries.DPoint

All Implemented Interfaces:

Comparable<DPoint>

public class DPoint
extends Element
implements Comparable<DPoint>

The smallest geometric element of a mesh.

Author:

Adelin Piau, Jean-Yves Martin, Erwan Bocher

Field Summary

Fields inherited from class org.jdelaunay.delaunay.geometries.Element

WEIGHTED_PROPERTIES

Constructor Summary

Constructors

Constructor and Description
DPoint() Build a point at the origin
DPoint(com.vividsolutions.jts.geom.Coordinate coord) Build a point as a copy of jts Coordinates
DPoint(double x, double y, double z) Build a point at coordinates x, y, z with no type
DPoint(DPoint pt) Build a point as a copy of another point

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	closedTo(DPoint aPoint, double tolerence) Check if the point is closed to the current point, ie if the distance between this and aPoint is inferior to tolerence.
int	compareTo(DPoint p) Compare this and p in two dimensions.
int	compareTo2D(DPoint p) Compare this and p in two dimensions.
boolean	contains(com.vividsolutions.jts.geom.Coordinate c) Check if the coordinate is inside the element
boolean	contains(DPoint aPoint) Check if aPoint can be considered as equal to this.
void	displayObject(Graphics g, int decalageX, int decalageY, double minX, double minY, double scaleX, double scaleY) Display the point in a JPanel Must be used only when using package drawing
boolean	equals(Object p) We override the equals method, as two points can be said equal when their coordinate are exactly the same
boolean	equals2D(DPoint y) Check if this==y, considering only the first two coordinates.
BoundaryBox	getBoundingBox() Computed bounding box
com.vividsolutions.jts.geom.Coordinate	getCoordinate() return jts Coordinate
double	getX() Get X coordinate
double	getY() Get Y coordinate
double	getZ() Get Z coordinate
int	hashCode() Generate an hashcode based on the coordinates of the point.
protected void	setColor(Graphics g) Set the point color for the JFrame panel
void	setX(double x) Set X coordinate
void	setY(double y) Set Y coordinate
void	setZ(double z) Set Z coordinate
protected double	squareDistance(double x, double y) plane square distance to another point
protected double	squareDistance(double x, double y, double z) square distance to another point
double	squareDistance(DPoint aPoint) square distance to another point
protected double	squareDistance2D(double x, double y) plane square distance to another point
protected double	squareDistance2D(DPoint aPoint) plane square distance to another point
String	toString() Gives a string representation of this object.

Methods inherited from class org.jdelaunay.delaunay.geometries.Element

addProperty, getExternalGID, getGID, getHeight, getMaxWeight, getProperty, hasProperty, removeProperties, setExternalGID, setGID, setHeight, setProperty

Methods inherited from class java.lang.Object

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

Constructor Detail

DPoint

public DPoint()
       throws DelaunayError

Build a point at the origin

Throws:

DelaunayError - If x, y or z is not set.

DPoint

public DPoint(double x,
      double y,
      double z)
       throws DelaunayError

Build a point at coordinates x, y, z with no type

Parameters:

x -

y -

z -

Throws:

DelaunayError - If x, y or z is not set.

DPoint

public DPoint(DPoint pt)
       throws DelaunayError

Build a point as a copy of another point

Throws:

DelaunayError - DelaunayError

DPoint

public DPoint(com.vividsolutions.jts.geom.Coordinate coord)
       throws DelaunayError

Build a point as a copy of jts Coordinates

Throws:

DelaunayError - If x, y or z is not set.

Method Detail

getX

public final double getX()

Get X coordinate

Returns:

x

getY

public final double getY()

Get Y coordinate

Returns:

y

getZ

public final double getZ()

Get Z coordinate

Returns:

z

setX

public final void setX(double x)

Set X coordinate

Parameters:

x -

setY

public final void setY(double y)

Set Y coordinate

Parameters:

y -

setZ

public final void setZ(double z)

Set Z coordinate

Parameters:

z -

getCoordinate

public final com.vividsolutions.jts.geom.Coordinate getCoordinate()

return jts Coordinate

Returns:

A representation of this DPoint as a JTS Coordinate.

getBoundingBox

public final BoundaryBox getBoundingBox()

Description copied from class: Element

Computed bounding box

Specified by:

getBoundingBox in class Element

Returns:

The boundary box of this element.

contains

public final boolean contains(DPoint aPoint)

Check if aPoint can be considered as equal to this.

Specified by:

contains in class Element

Parameters:

aPoint -

Returns:

true if this and aPoint are equal.

contains

public final boolean contains(com.vividsolutions.jts.geom.Coordinate c)

Description copied from class: Element

Check if the coordinate is inside the element

Specified by:

contains in class Element

Returns:

bool

squareDistance2D

protected final double squareDistance2D(DPoint aPoint)

plane square distance to another point

Parameters:

aPoint -

Returns:

distance

squareDistance2D

protected final double squareDistance2D(double x,
                      double y)

plane square distance to another point

Parameters:

x -

y -

Returns:

distance

squareDistance

public final double squareDistance(DPoint aPoint)

square distance to another point

Parameters:

aPoint -

Returns:

distance

squareDistance

protected final double squareDistance(double x,
                    double y)

plane square distance to another point

Parameters:

x -

y -

Returns:

distance

squareDistance

protected final double squareDistance(double x,
                    double y,
                    double z)

square distance to another point

Parameters:

x -

y -

z -

Returns:

distance

closedTo

protected final boolean closedTo(DPoint aPoint,
               double tolerence)

Check if the point is closed to the current point, ie if the distance between this and aPoint is inferior to tolerence.

Parameters:

aPoint -

tolerence -

Returns:

closedTo

toString

public final String toString()

Gives a string representation of this object.

Overrides:

toString in class Object

Returns:

DPoint GID [x y z]

equals

public final boolean equals(Object p)

We override the equals method, as two points can be said equal when their coordinate are exactly the same

Overrides:

equals in class Object

Parameters:

p -

Returns:

true if this and p are equal, in three dimensions.

hashCode

public final int hashCode()

Generate an hashcode based on the coordinates of the point.

Overrides:

hashCode in class Object

Returns:

a hash

equals2D

public final boolean equals2D(DPoint y)

Check if this==y, considering only the first two coordinates.

Parameters:

y -

Returns:

true if this and y are equal in 2D.

compareTo2D

public final int compareTo2D(DPoint p)

Compare this and p in two dimensions.

Parameters:

p -

Returns:

-1 : if this.x < p.x || (this.x == p.x && this.y < p.y)
0 : if this.x == p.x && this.y == p.y
1 otherwise.

compareTo

public final int compareTo(DPoint p)

Compare this and p in two dimensions.

Specified by:

compareTo in interface Comparable<DPoint>

Parameters:

p -

Returns:

-1 : if this.x < p.x || (this.x == p.x && this.y < p.y)
0 : if this.x == p.x && this.y == p.y
1 otherwise.

setColor

protected final void setColor(Graphics g)

Set the point color for the JFrame panel

Parameters:

g -

displayObject

public final void displayObject(Graphics g,
                 int decalageX,
                 int decalageY,
                 double minX,
                 double minY,
                 double scaleX,
                 double scaleY)

Display the point in a JPanel Must be used only when using package drawing

Parameters:

g -

decalageX -

decalageY -