Package com.j3d.engine.interact.selection

Class SelectionQuery

java.lang.Object

java.awt.geom.RectangularShape

java.awt.geom.Rectangle2D

java.awt.Rectangle

com.j3d.engine.interact.selection.SelectionQuery

All Implemented Interfaces:

Shape, Serializable, Cloneable

public class SelectionQuery
extends Rectangle

A SelectionQuery represents a selection made by the user. It is represented as a rectangle defined by two ScreenPoints (the corners). It can be used to check whether certain GObjects are within the selection.

Author:

Lehlogonolo Poole

See Also:

• SelectionType
• SelectionManager
• SelectionMouseOwner
• SelectionUI
• SelectionUtils
• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Rectangle2D

Rectangle2D.Double, Rectangle2D.Float

Field Summary

Fields

Modifier and Type	Field	Description
ScreenPoint[]	points
SelectionType	type

Fields inherited from class java.awt.Rectangle

height, width, x, y

Fields inherited from class java.awt.geom.Rectangle2D

OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP

Constructor Summary

Constructors

Constructor	Description
SelectionQuery(ScreenPoint i, ScreenPoint ii, SelectionType t)	Constructs a SelectionQuery object with the given screen points and selection type.

Method Summary

Modifier and Type	Method	Description
boolean	has(Segment line, boolean soft)
boolean	has(Triangle triangle, boolean soft)	Whether the Selection has the triangle.
boolean	has(Vector3 point)
boolean	has(GCurve curve, boolean soft)
boolean	has(GObject obj, boolean soft)	Whether the Selection has the given GObject.
boolean	intersectsWith(Segment line)
private boolean	onSegment(ScreenPoint a, ScreenPoint b, ScreenPoint c)
private int	orientation(ScreenPoint a, ScreenPoint b, ScreenPoint c)
private boolean	segmentsIntersect(ScreenPoint p1, ScreenPoint p2, ScreenPoint q1, ScreenPoint q2)

Methods inherited from class java.awt.Rectangle

add, add, add, contains, contains, contains, contains, createIntersection, createUnion, equals, getBounds, getBounds2D, getHeight, getLocation, getSize, getWidth, getX, getY, grow, inside, intersection, intersects, isEmpty, move, outcode, reshape, resize, setBounds, setBounds, setLocation, setLocation, setRect, setSize, setSize, toString, translate, union

Methods inherited from class java.awt.geom.Rectangle2D

add, add, add, contains, contains, getPathIterator, getPathIterator, hashCode, intersect, intersects, intersectsLine, intersectsLine, outcode, setFrame, setRect, union

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.awt.Shape

contains, contains, contains, contains, getPathIterator, getPathIterator, intersects, intersects

Field Details

type

public SelectionType type

points

public ScreenPoint[] points

Constructor Details

SelectionQuery

public SelectionQuery(ScreenPoint i,
 ScreenPoint ii,
 SelectionType t)

Constructs a SelectionQuery object with the given screen points and selection type.

Parameters:

i - The first screen point.

ii - The second screen point.

t - The type of selection.

Method Details

has

public boolean has(GObject obj,
 boolean soft)

Whether the Selection has the given GObject.

Parameters:

obj - The GObject to check.

soft - If false, we strictly check whether the GObject is fully contained within the selection. Otherwise, we check whether the selection does so much as intersect with the GObject.

has

public boolean has(GCurve curve,
 boolean soft)

has

public boolean has(Triangle triangle,
 boolean soft)

Whether the Selection has the triangle.

Parameters:

triangle - The triangle to check.

soft - If false, we strictly check whether the triangle is fully contained within the selection. Otherwise, we check whether the selection does so much as intersect with ay of the lines of the triangle.

Returns:

true if all the points are within the triangle

has

public boolean has(Segment line,
 boolean soft)

has

public boolean has(Vector3 point)

intersectsWith

public boolean intersectsWith(Segment line)

segmentsIntersect

private boolean segmentsIntersect(ScreenPoint p1,
 ScreenPoint p2,
 ScreenPoint q1,
 ScreenPoint q2)

orientation

private int orientation(ScreenPoint a,
 ScreenPoint b,
 ScreenPoint c)

onSegment

private boolean onSegment(ScreenPoint a,
 ScreenPoint b,
 ScreenPoint c)