jv.geom
Class PgElementEdge

java.lang.Object
  |
  +--jv.vecmath.P_Vector
        |
        +--jv.geom.PgElementEdge

All Implemented Interfaces:

java.io.Serializable

public class PgElementEdge

extends P_Vector

Edge of an element set with indices to both endpoints, adjacent elements, and local index of vertex in each element, whose neighbour refers to this edge.

There may be more than two elements joining an edge.

Version:

23.06.00, 2.00 revised (kp) Superclass changed to P_Vector to allow tagging.
02.04.00, 1.20 revised (kp) Allocate array of 2 during construction to avoid reallocation.
03.09.99, 1.10 revised (kp) Former inner class of PgElementSet converted to public class.
00.00.98, 1.00 created (kp)

Author:

Konrad Polthier

See Also:

Serialized Form

Field Summary

protected int[]	m_elemInd Element indices containing edge.
protected int[]	m_neighbourLocInd Local index of vertex in each element such that neighbour value of vertex references to the neighbouring element at this edge.
protected int	m_vertInd0 Edge endpoint with smallest vertex index.
protected int	m_vertInd1 Edge endpoint with largest vertex index.

Fields inherited from class jv.vecmath.P_Vector

BITS, m_bits, m_constraint, m_name, MASK, NUM_BITS

Constructor Summary

PgElementEdge(int v1, int v2)

Method Summary

void	addElement(int elemInd, int neighInd) Add index of another element and the local index of its vertex opposite to the edge.
int	getEdgeInd(int ind) Get index of first or second vertex of edge.
int	getElementInd(int ind) Get index of element at position 'ind'.
int[]	getElements() Get array with indices of adjacent elements.
int	getNeighbourLocInd(int ind) Get local index of neighbour vertex of element at position 'ind'.
int	getSize() Get currently available number of adjacent elements.
java.lang.String	toString() Create a multi-line string representation with detailed information about all instance variables.

Methods inherited from class jv.vecmath.P_Vector

clearTag, clone, clone, copy, getBits, getName, hasTag, setName, setTag

Methods inherited from class java.lang.Object

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

Field Detail

m_vertInd0

protected int m_vertInd0

Edge endpoint with smallest vertex index.

m_vertInd1

protected int m_vertInd1

Edge endpoint with largest vertex index.

m_elemInd

protected int[] m_elemInd

Element indices containing edge. There may be more than two elements joining an edge, but only two elements are allowed for manifold polyhedrons.

m_neighbourLocInd

protected int[] m_neighbourLocInd

Local index of vertex in each element such that neighbour value of vertex references to the neighbouring element at this edge. I.e. triang.m_neighbour[elemInd].m_data[m_neighbourLocInd] = index of adjacent element

Constructor Detail

PgElementEdge

public PgElementEdge(int v1,
                     int v2)

Method Detail

toString

public java.lang.String toString()

Create a multi-line string representation with detailed information about all instance variables.

Overrides:

toString in class P_Vector

getSize

public int getSize()

Get currently available number of adjacent elements.

addElement

public void addElement(int elemInd,
                       int neighInd)

Add index of another element and the local index of its vertex opposite to the edge.

getEdgeInd

public int getEdgeInd(int ind)

Get index of first or second vertex of edge.

Parameters:

ind - index of first (ind==0) or second (ind==1) vertex of edge

Returns:

index of edge vertex within [0,numVertices-1], where numVertices refers to an element set.

getElements

public int[] getElements()

Get array with indices of adjacent elements.

getElementInd

public int getElementInd(int ind)

Get index of element at position 'ind'.

getNeighbourLocInd

public int getNeighbourLocInd(int ind)

Get local index of neighbour vertex of element at position 'ind'.