Module imp2d

Package de.grogra.imp2d

Class Visitor2D

java.lang.Object

java.util.AbstractCollection

java.util.AbstractList

de.grogra.xl.util.ObjectList

de.grogra.imp2d.Visitor2D

All Implemented Interfaces:

Visitor, ObjectConsumer, VoidToObjectGenerator, Serializable, Cloneable, Iterable, Collection, List, RandomAccess, SequencedCollection

Direct Known Subclasses:

PickRayVisitor, PickToolVisitor

public abstract class Visitor2D
extends ObjectList
implements Visitor

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected int	layer
protected GraphState	state
protected Matrix3d	transformation

Fields inherited from class de.grogra.xl.util.ObjectList

elements, size, useEquals

Fields inherited from class java.util.AbstractList

modCount

Fields inherited from interface de.grogra.graph.Visitor

STOP

Constructor Summary

Constructors

Constructor	Description
Visitor2D()

Method Summary

Modifier and Type	Method	Description
GraphState	getGraphState()	Returns the graph state within which the visitor is operating.
protected void	init(GraphState gs, EdgePattern pattern, Matrix3d t)
protected final Matrix3d	popTransformation(Matrix3d t)
protected final void	pushTransformation(Matrix3d t)
Object	visitEnter(Path path, boolean node)	Informs this visitor about a node or edge in the graph.
protected Object	visitEnter(Object object, boolean asNode, Path path)
protected abstract void	visitImpl(Object object, boolean asNode, Path path)
Object	visitInstanceEnter()	Informs this visitor about the beginning of an instantiation.
boolean	visitInstanceLeave(Object o)	Informs this visitor that an instantiation has been processed completely.
boolean	visitLeave(Object o, Path path, boolean node)	Informs this visitor that a node or an edge has been processed completely.

Methods inherited from class de.grogra.xl.util.ObjectList

add, add, addAll, addAll, addAll, addIfNotContained, addInOrder, addInOrder, arraycopy, clear, clear, clone, consume, contains, ensureCapacity, equals, evaluateObject, get, hashCode, indexOf, isEmpty, lastIndexOf, peek, pop, push, push, push, remove, remove, removeAt, set, setSize, size, toArray, toArray, trimToSize, values

Methods inherited from class java.util.AbstractList

addAll, iterator, listIterator, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addFirst, addLast, containsAll, getFirst, getLast, removeAll, removeFirst, removeLast, replaceAll, retainAll, reversed, sort, spliterator

Field Details

state

protected GraphState state

transformation

protected Matrix3d transformation

layer

protected int layer

Constructor Details

Visitor2D

public Visitor2D()

Method Details

init

protected void init(GraphState gs,
 EdgePattern pattern,
 Matrix3d t)

getGraphState

public GraphState getGraphState()

Description copied from interface: Visitor

Returns the graph state within which the visitor is operating.

Specified by:

getGraphState in interface Visitor

Returns:

graph state of visitor

pushTransformation

protected final void pushTransformation(Matrix3d t)

popTransformation

protected final Matrix3d popTransformation(Matrix3d t)

visitEnter

public Object visitEnter(Path path,
 boolean node)

Description copied from interface: Visitor

Informs this visitor about a node or edge in the graph. path contains the path from the root up to and including the node or, in case an edge is visited, the edge and its terminal node. Later on, Visitor.visitLeave(java.lang.Object, de.grogra.graph.Path, boolean) will be invoked with the returned value of this invocation, path and node as arguments. If this method returns Visitor.STOP, the corresponding visitLeave-method will be invoked immediately after this method, i.e., the visitor does not dive more deeply in the hierarchy. Otherwise, if a node is visited and there are instantiations associated with or edges connected with it (regardless of their direction), their corresponding visitor methods will be invoked inbetween. Likewise, if an edge is visited, its indicent terminal node will be visited next.

Specified by:

visitEnter in interface Visitor

Parameters:

path - current path

node - do we enter a node or an edge?

Returns:

value to pass to visitLeave, may be Visitor.STOP

visitEnter

protected Object visitEnter(Object object,
 boolean asNode,
 Path path)

visitImpl

protected abstract void visitImpl(Object object,
 boolean asNode,
 Path path)

visitLeave

public boolean visitLeave(Object o,
 Path path,
 boolean node)

Description copied from interface: Visitor

Informs this visitor that a node or an edge has been processed completely. The value o is the return value of the corresponding invocation of Visitor.visitEnter(de.grogra.graph.Path, boolean). In case of a node and if this invocation returns false, no further edges of the current level of hierarchy will be passed to this visitor, i.e., the visitLeave methods for the enclosing edge and node will be invoked immediately. Likewise, in case of an edge and a return value false, no further instantiations or edges of the current level of hierarchy will be passed to this visitor, i.e., the visitLeave method for the enclosing node will be invoked immediately.

Specified by:

visitLeave in interface Visitor

Parameters:

o - returned value of visitEnter

path - current path to node

node - do we leave a node or an edge?

Returns:

true iff processing of current level shall be continued

visitInstanceEnter

public Object visitInstanceEnter()

Description copied from interface: Visitor

Informs this visitor about the beginning of an instantiation. This method invokation is nested immediately within visitEnter/visitLeave of a node. Later on, Visitor.visitInstanceLeave(Object) will be invoked with the returned value of this invocation as argument. If this method returns Visitor.STOP, the visitInstanceLeave-method will be invoked immediately after this method, i.e., the visitor does not dive into the instantiation. Otherwise, the instantiation is performed, starting with an edge.

Specified by:

visitInstanceEnter in interface Visitor

Returns:

value to pass to visitInstanceLeave, may be Visitor.STOP

visitInstanceLeave

public boolean visitInstanceLeave(Object o)

Description copied from interface: Visitor

Informs this visitor that an instantiation has been processed completely. The value o is the return value of the corresponding invocation of Visitor.visitInstanceEnter(). If this invocation returns false, no further instantiations or edges of the current level of hierarchy will be passed to this visitor, i.e., the visitLeave method for the enclosing node will be invoked immediately.

Specified by:

visitInstanceLeave in interface Visitor

Parameters:

o - returned value of visitInstanceEnter

Returns:

true iff processing of current level shall be continued