jsim.util
Class QCurve

java.lang.Object
  java.awt.geom.QuadCurve2D
      java.awt.geom.QuadCurve2D.Double
          jsim.util.QCurve

All Implemented Interfaces:

java.awt.Shape, java.io.Serializable, java.lang.Cloneable

public class QCurve
extends java.awt.geom.QuadCurve2D.Double
implements java.io.Serializable

The QCurve class enhances the QuadCurve.Double class (from the java.awt.geom package) by allowing entities to move along such quadratic curves.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.QuadCurve2D

java.awt.geom.QuadCurve2D.Double, java.awt.geom.QuadCurve2D.Float

Field Summary

java.lang.String	alpha Scale parameter (e.g., mean)
java.lang.String	beta Shape parameter (e.g., variance)
java.lang.String	distribution Probability distribution
boolean	straight Flag indicating whether curve is actaully a straight line.
java.lang.String	stream Random number stream
protected static java.util.logging.Logger	trc Tracing Messages

Fields inherited from class java.awt.geom.QuadCurve2D.Double

ctrlx, ctrly, x1, x2, y1, y2

Constructor Summary

QCurve()
Construct an empty quad curve.

QCurve(double x1, double y1, double x2, double y2)
Construct a straight line (degenerate quad curve).

QCurve(double x1, double y1, double ctrlx, double ctrly, double x2, double y2)
Construct a quad curve.

Method Summary

java.awt.geom.Point2D.Double	getControl() Return the control point of the quad curve.
int	getEdgeIndex()
java.awt.geom.Point2D.Double	getFirst() Return the first/start point of the quad curve.
java.awt.geom.Point2D.Double	getLast() Return the last/end point of the quad curve.
java.lang.String	getOutCondition()
int	getOutCondType()
Node	getStartNode()
boolean	isSame(double x, double y, double xe, double ye, double step) Are (x, y) and (xe, ye) essentially the same?
java.awt.geom.Point2D.Double	next(java.awt.geom.Point2D.Double current, double step) Return the next point on the quad curve (step units beyond current).
boolean	onQCurve(java.awt.geom.Point2D.Double selected)
void	ReconstructQCurve(double x1, double y1, double ctrlx, double ctrly, double x2, double y2) ReConstruct a quad curve.
void	setEdgeIndex(int edgeIndex)
void	setFirst(java.awt.geom.Point2D.Float delta) Reset first point in curve.
void	setFirstFixed(java.awt.geom.Point2D.Float newPoint) Reset first point in curve to a fixed positon
void	setLast(java.awt.geom.Point2D.Float delta) Reset last point in curve.
void	setLastFixed(java.awt.geom.Point2D.Float newPoint) Reset last point in curve to a fixed position
void	setOutCondition(java.lang.String outCondition)
void	setOutCondType(int outCondType)
void	setStartNode(Node startNode)

Methods inherited from class java.awt.geom.QuadCurve2D.Double

getBounds2D, getCtrlPt, getCtrlX, getCtrlY, getP1, getP2, getX1, getX2, getY1, getY2, setCurve

Methods inherited from class java.awt.geom.QuadCurve2D

clone, contains, contains, contains, contains, getBounds, getFlatness, getFlatness, getFlatness, getFlatnessSq, getFlatnessSq, getFlatnessSq, getPathIterator, getPathIterator, intersects, intersects, setCurve, setCurve, setCurve, setCurve, solveQuadratic, solveQuadratic, subdivide, subdivide, subdivide

Methods inherited from class java.lang.Object

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

Field Detail

straight

public final boolean straight

Flag indicating whether curve is actaully a straight line.

distribution

public java.lang.String distribution

Probability distribution

alpha

public java.lang.String alpha

Scale parameter (e.g., mean)

beta

public java.lang.String beta

Shape parameter (e.g., variance)

stream

public java.lang.String stream

Random number stream

trc

protected static java.util.logging.Logger trc

Tracing Messages

Constructor Detail

QCurve

public QCurve()

Construct an empty quad curve.

QCurve

public QCurve(double x1,
              double y1,
              double x2,
              double y2)

Construct a straight line (degenerate quad curve).

Parameters:

x1 - x coordinate of start point

y1 - y coordinate of start point

x2 - x coordinate of end point

y2 - y coordinate of end point

QCurve

public QCurve(double x1,
              double y1,
              double ctrlx,
              double ctrly,
              double x2,
              double y2)

Construct a quad curve.

Parameters:

x1 - x coordinate of start point

y1 - y coordinate of start point

ctrlx - x coordinate of control point

ctrly - y coordinate of control point

x2 - x coordinate of end point

y2 - y coordinate of end point

Method Detail

ReconstructQCurve

public void ReconstructQCurve(double x1,
                              double y1,
                              double ctrlx,
                              double ctrly,
                              double x2,
                              double y2)

ReConstruct a quad curve.

Parameters:

x1 - x coordinate of start point

y1 - y coordinate of start point

ctrlx - x coordinate of control point

ctrly - y coordinate of control point

x2 - x coordinate of end point

y2 - y coordinate of end point

getFirst

public java.awt.geom.Point2D.Double getFirst()

Return the first/start point of the quad curve.

Returns:

Point2D.Double the first point

getControl

public java.awt.geom.Point2D.Double getControl()

Return the control point of the quad curve.

Returns:

Point2D.Double the control point

getLast

public java.awt.geom.Point2D.Double getLast()

Return the last/end point of the quad curve.

Returns:

Point2D.Double the last point

setFirst

public void setFirst(java.awt.geom.Point2D.Float delta)

Reset first point in curve.

Parameters:

delta - translation vector

setFirstFixed

public void setFirstFixed(java.awt.geom.Point2D.Float newPoint)

Reset first point in curve to a fixed positon

Parameters:

newPoint - point

setLast

public void setLast(java.awt.geom.Point2D.Float delta)

Reset last point in curve.

Parameters:

delta - translation vector

setLastFixed

public void setLastFixed(java.awt.geom.Point2D.Float newPoint)

Reset last point in curve to a fixed position

Parameters:

newPoint - point

isSame

public boolean isSame(double x,
                      double y,
                      double xe,
                      double ye,
                      double step)

Are (x, y) and (xe, ye) essentially the same?

Returns:

boolean true if essentially the same point

next

public java.awt.geom.Point2D.Double next(java.awt.geom.Point2D.Double current,
                                         double step)

Return the next point on the quad curve (step units beyond current). Return null if past end point.

Parameters:

current - the current point

step - distance to next point

Returns:

Point2D.Double the next point

onQCurve

public boolean onQCurve(java.awt.geom.Point2D.Double selected)

getEdgeIndex

public int getEdgeIndex()

setEdgeIndex

public void setEdgeIndex(int edgeIndex)

getStartNode

public Node getStartNode()

setStartNode

public void setStartNode(Node startNode)

setOutCondition

public void setOutCondition(java.lang.String outCondition)

getOutCondition

public java.lang.String getOutCondition()

setOutCondType

public void setOutCondType(int outCondType)

getOutCondType

public int getOutCondType()