manifold.base
Class Traversal

java.lang.Object
  |
  +--manifold.base.Traversal

Direct Known Subclasses:

FTraversal

public abstract class Traversal

extends java.lang.Object

Copyright (c) 2000 Rutgers, The State University of New Jersey

Since:

disciple %Version%

Version:

%Version%, %Time%

Field Summary

static int	DRAW Specifies draw traversal.
protected java.lang.Object	graphics_
int	operation_
static int	OTHER Specifies traversal for other purposes.
static int	PICK_ALL Specifies pick traversal resulting in pick of all items which intersects with the specified pick shape.
static int	PICK_ALL_SORTED Specifies pick traversal resulting in pick of all items which intersects with the specified pick shape.
static int	PICK_ANY Specifies pick traversal resulting in pick of one item which intersects with the specified pick shape.
static int	PICK_TOP Specifies pick traversal resulting in pick of the top item which intersects with the specified pick shape.
protected java.lang.Object	pickPoint_
protected java.util.Stack	stack_
protected java.lang.Object	transform_

Constructor Summary

Traversal(int operation)

Traversal(Traversal t)

Method Summary

Traversal	getFirstPicked() Returns the traversal containing the first glyph which was hit in a pick traversal of the scenegraph.
java.lang.Object	getGraphics()
Traversal	getLastPicked() Returns the traversal containing the last glyph which was hit in a pick traversal of the scenegraph.
java.lang.Object	getPickPoint()
java.lang.Object	getTransform()
void	hit() Mark current glyph as a hit in a pick traversal of the scenegraph.
void	setGraphics(java.lang.Object graphics)
void	setPickPoint(java.lang.Object pickPoint)
abstract void	traverseChild(Glyph g) Traverses to the specified Glyph.
void	visit() This method must be overridden by subclasses which do other traversals than draw and pick (i.e. using GlyphViewTraversal2D.OTHER as operation).

Methods inherited from class java.lang.Object

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

Field Detail

DRAW

public static final int DRAW

Specifies draw traversal.

See Also:

Constant Field Values

PICK_ANY

public static final int PICK_ANY

Specifies pick traversal resulting in pick of one item which intersects with the specified pick shape.

See Also:

Constant Field Values

PICK_TOP

public static final int PICK_TOP

Specifies pick traversal resulting in pick of the top item which intersects with the specified pick shape.

See Also:

Constant Field Values

PICK_ALL

public static final int PICK_ALL

Specifies pick traversal resulting in pick of all items which intersects with the specified pick shape.

See Also:

Constant Field Values

PICK_ALL_SORTED

public static final int PICK_ALL_SORTED

Specifies pick traversal resulting in pick of all items which intersects with the specified pick shape. The result is sorted with the topmost item first.

See Also:

Constant Field Values

OTHER

public static final int OTHER

Specifies traversal for other purposes.

See Also:

Constant Field Values

operation_

public int operation_

stack_

protected java.util.Stack stack_

transform_

protected java.lang.Object transform_

graphics_

protected java.lang.Object graphics_

pickPoint_

protected java.lang.Object pickPoint_

Constructor Detail

Traversal

public Traversal(int operation)

Traversal

public Traversal(Traversal t)

Method Detail

traverseChild

public abstract void traverseChild(Glyph g)

Traverses to the specified Glyph.

Parameters:

g - the Glyph to traverse to.

hit

public void hit()

Mark current glyph as a hit in a pick traversal of the scenegraph. NOTE: This method is not implemented in this class, it needs to be implemented by a pick traversal subclass.

getPickPoint

public java.lang.Object getPickPoint()

setPickPoint

public void setPickPoint(java.lang.Object pickPoint)

getLastPicked

public Traversal getLastPicked()

Returns the traversal containing the last glyph which was hit in a pick traversal of the scenegraph. NOTE: This method is not implemented in this class, it needs to be implemented by a pick traversal subclass.

getFirstPicked

public Traversal getFirstPicked()

Returns the traversal containing the first glyph which was hit in a pick traversal of the scenegraph. NOTE: This method is not implemented in this class, it needs to be implemented by a pick traversal subclass.

visit

public void visit()

This method must be overridden by subclasses which do other traversals than draw and pick (i.e. using GlyphViewTraversal2D.OTHER as operation).

getTransform

public java.lang.Object getTransform()

getGraphics

public java.lang.Object getGraphics()

setGraphics

public void setGraphics(java.lang.Object graphics)