Package etomica.math.geometry

Class Cube

java.lang.Object

etomica.math.geometry.Polytope

etomica.math.geometry.Polyhedron

etomica.math.geometry.Hexahedron

etomica.math.geometry.Cube

All Implemented Interfaces:

Shape

public class Cube
extends Hexahedron

A geometric cube.

See Also:

Serialized Form

Field Summary

Fields inherited from class etomica.math.geometry.Polyhedron

edges, faces

Fields inherited from class etomica.math.geometry.Polytope

D, embeddedSpace, hyperPlanes, position, vertices

Constructor Summary

Constructors

Constructor	Description
Cube(Space embeddedSpace)	Constructs a cube of unit size.
Cube(Space embeddedSpace, double size)	Constructs a cube with edge length having the given value.

Method Summary

Modifier and Type	Method	Description
boolean	contains(Vector v)	Returns true if the given vector lies inside (or on the surface of) this cell, false otherwise.
double	getEdgeLength()
double	getPerimeter()	Returns 12*edgeLength
double	getSurfaceArea()	Returns 6*edgeLength^2
double	getVolume()	Returns edgeLength^3.
void	setEdgeLength(double edgeLength)
void	updateVertices()	This method should be defined by the subclass to calculate the vertices in accordance with the internal representation of the polytope.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class etomica.math.geometry.Polyhedron

distanceTo, getEdges, getFaces

Methods inherited from class etomica.math.geometry.Polytope

applyTranslationRotation, D, getEmbeddedSpace, getPosition, getVertexCount, getVertices, setPosition, toString

Constructor Detail

Cube

public Cube(Space embeddedSpace)

Constructs a cube of unit size.

Cube

public Cube(Space embeddedSpace,
            double size)

Constructs a cube with edge length having the given value.

Parameters:

size - edge length of the cube

Method Detail

getVolume

public double getVolume()

Returns edgeLength^3.

Specified by:

getVolume in interface Shape

Specified by:

getVolume in class Polytope

getSurfaceArea

public double getSurfaceArea()

Returns 6*edgeLength^2

Overrides:

getSurfaceArea in class Polyhedron

getPerimeter

public double getPerimeter()

Returns 12*edgeLength

Overrides:

getPerimeter in class Polyhedron

contains

public boolean contains(Vector v)

Returns true if the given vector lies inside (or on the surface of) this cell, false otherwise.

Specified by:

contains in interface Shape

Specified by:

contains in class Polytope

getEdgeLength

public double getEdgeLength()

Returns:

Returns the size, which is the length the edge of the cube.

setEdgeLength

public void setEdgeLength(double edgeLength)

Parameters:

edgeLength - The size to set.

updateVertices

public void updateVertices()

Description copied from class: Polytope

This method should be defined by the subclass to calculate the vertices in accordance with the internal representation of the polytope. If the internal representation is kept by the vertices themselves, then this method need do nothing; if this method applies another internal representation to the vertices (for example, it might represent a square by keeping the edge length), it should then invoke applyTranslationRotation() before returning. Subclass methods allowing mutation of the internal representation should invoke updateVertices to ensure the vertices reflect the internal state. Vertices may be changed directly, but these changes will overridden by updateVertices if it is called afterwards.

Specified by:

updateVertices in class Polytope