grammarscope.jung2

Class EdgeOffsetFunctionsImpl<V extends HasIndex,E>

java.lang.Object

grammarscope.jung2.EdgeOffsetFunctionsImpl<V,E>

Type Parameters:

V - vertex type

E - edge type

All Implemented Interfaces:

EdgeOffsetFunctions<V,E>

public class EdgeOffsetFunctionsImpl<V extends HasIndex,E>
extends java.lang.Object
implements EdgeOffsetFunctions<V,E>

Edge offset functions. Offsets are here horizontal offsets applied to edge's x anchor point to node. This allows edges not to merge and improves visibility of edges' end points, notably arrows' tips.

Author:

Bernard Bou

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	EdgeOffsetFunctionsImpl.DestinationOffsetFunction Destination end offset function
class	EdgeOffsetFunctionsImpl.SourceOffsetFunction Destination end offset function

Nested classes/interfaces inherited from interface grammarscope.jung2.EdgeOffsetFunctions

EdgeOffsetFunctions.HasEdgeOffsetFunctions<V,E>

Field Summary

Fields

Modifier and Type	Field and Description
protected EdgeOffsetFunctionsImpl.DestinationOffsetFunction	destinationOffsetFunction Destination offset function
protected EdgeIndexFunctionImpl<V,E>	edgeIndexFunction Edge index function
protected java.util.Map<V,java.util.Map<E,java.lang.Integer>>	edgeOffsets (Vertex-Edge)-indexed edge anchor-point offsets
protected EdgeOffsetFunctionsImpl.SourceOffsetFunction	sourceOffsetFunction Source offset function

Constructor Summary

Constructors

Constructor and Description
EdgeOffsetFunctionsImpl(EdgeIndexFunctionImpl<V,E> edgeIndexFunction) Constructor

Method Summary

Modifier and Type	Method and Description
protected java.util.Map<V,java.util.Map<E,java.lang.Integer>>	allocate(edu.uci.ics.jung.graph.Graph<V,E> graph) Allocate node offset slots
EdgeOffsetFunction<V,E>	getDestOffsetFunction() Destination-end offset function
EdgeOffsetFunction<V,E>	getSourceOffsetFunction() Source-end offset function
protected void	init(edu.uci.ics.jung.graph.Graph<V,E> graph) Initialize
private boolean	isLeft(edu.uci.ics.jung.graph.Graph<V,E> graph, E edge, boolean incoming) Whether edge is left
private int	span(E edge, edu.uci.ics.jung.graph.Graph<V,E> graph)

Methods inherited from class java.lang.Object

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

Field Detail

edgeOffsets

protected java.util.Map<V extends HasIndex,java.util.Map<E,java.lang.Integer>> edgeOffsets

(Vertex-Edge)-indexed edge anchor-point offsets

sourceOffsetFunction

protected final EdgeOffsetFunctionsImpl.SourceOffsetFunction sourceOffsetFunction

Source offset function

destinationOffsetFunction

protected final EdgeOffsetFunctionsImpl.DestinationOffsetFunction destinationOffsetFunction

Destination offset function

edgeIndexFunction

protected final EdgeIndexFunctionImpl<V extends HasIndex,E> edgeIndexFunction

Edge index function

Constructor Detail

EdgeOffsetFunctionsImpl

public EdgeOffsetFunctionsImpl(EdgeIndexFunctionImpl<V,E> edgeIndexFunction)

Constructor

Parameters:

edgeIndexFunction - edge index function

Method Detail

init

protected void init(edu.uci.ics.jung.graph.Graph<V,E> graph)

Initialize

Parameters:

graph - graph

allocate

protected java.util.Map<V,java.util.Map<E,java.lang.Integer>> allocate(edu.uci.ics.jung.graph.Graph<V,E> graph)

Allocate node offset slots

Parameters:

graph - graph

Returns:

allocation scheme : node to (edge to slot number)

isLeft

private boolean isLeft(edu.uci.ics.jung.graph.Graph<V,E> graph,
                       E edge,
                       boolean incoming)

Whether edge is left

Parameters:

graph - graph

edge - edge

incoming - whether edge is incoming

Returns:

whether edge is left

span

private int span(E edge,
                 edu.uci.ics.jung.graph.Graph<V,E> graph)

getSourceOffsetFunction

public EdgeOffsetFunction<V,E> getSourceOffsetFunction()

Description copied from interface: EdgeOffsetFunctions

Source-end offset function

Specified by:

getSourceOffsetFunction in interface EdgeOffsetFunctions<V extends HasIndex,E>

Returns:

offset function for source end

getDestOffsetFunction

public EdgeOffsetFunction<V,E> getDestOffsetFunction()

Description copied from interface: EdgeOffsetFunctions

Destination-end offset function

Specified by:

getDestOffsetFunction in interface EdgeOffsetFunctions<V extends HasIndex,E>

Returns:

offset function for destination end