: Class Curve

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com.vistech.shapes
Class Curve

java.lang.Object
  |
  +--com.vistech.shapes.Shapes
        |
        +--com.vistech.shapes.Curve

All Implemented Interfaces:: java.lang.Cloneable, Drawable, java.io.Serializable

public class Curve
extends Shapes
implements Drawable

Represents an interactively drawable curve.

Version:: 1.0 24 July 1999
Author:: Larry Rodrigues
See Also:: Serialized Form

Field Summary

protected java.util.Vector allPoints


protected boolean filled


protected int pointsCount


protected int[] prevxp


protected int[] prevyp


protected int[] xp
          xp the x coordinates of the Box corners

protected int[] yp
          yp the y coordinates of the Box corners

Fields inherited from class com.vistech.shapes.Shapes

basicStroke, cur, drawingColor, fillColor, fillOn, font, path, shapeCount, smallRectsOn, st

Fields inherited from interface com.vistech.shapes.Drawable

ANNOTEXT, ARROW, BOX, CUBIC_CURVE, CURVE, DOUBLE_HEADED_ARROW, ELLIPSE, LINE, NONE, POLYGON

Constructor Summary

Curve()


Method Summary

boolean contains(java.awt.Graphics2D g, int x, int y)
          Vhecks whether the specified point contained in the shape.

void draw(java.awt.Graphics2D g)
          Draws the shape again

void drawCurve(java.awt.Graphics2D g, int[] x, int[] y)


void drawInteractive(java.awt.Graphics2D g)
          Draws interactively on a Graphics context g.

void drawPermanent(java.awt.Graphics2D g)
          Draws on a Graphics context g.

protected void drawSegment(java.awt.Graphics2D g)
          Draws a segment of the curve.

void drawSmallRects(java.awt.Graphics2D g)
          Draws small rectangle at the shape corners to indicate that the shape is active.

void erase(java.awt.Graphics2D g)
          Erase the shape.

void fill(java.awt.Graphics2D g, java.awt.Color color)
          Fills with a given color.

void fillPolygon(java.awt.Graphics2D g, int[] x, int[] y)


void init(int x, int y)
          Initializes the Box parameters.

void move(java.awt.Graphics2D g, int diffx, int diffy)
          Moves the shape by a specified displacement.

void setCurrentPosition(java.awt.Point cp)
          Sets the current position.

Methods inherited from class com.vistech.shapes.Shapes

contains, copy, getCurrentPosition, getDrawingColor, getFillColor, getFillOn, getFont, getGeneralPath, getShapeCount, getSmallRectsOn, getStartPosition, getStroke, setDrawingColor, setFillColor, setFillOn, setFont, setGeneralPath, setShapeCount, setSmallRectsOn, setStartPosition, setStroke

Methods inherited from class java.lang.Object

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

Field Detail

xp

protected int[] xp

xp the x coordinates of the Box corners

prevxp

protected int[] prevxp

yp

protected int[] yp

yp the y coordinates of the Box corners

prevyp

protected int[] prevyp

filled

protected boolean filled

pointsCount

protected int pointsCount

allPoints

protected java.util.Vector allPoints

Constructor Detail

Curve

public Curve()

Method Detail

init

public void init(int x,
                 int y)

Initializes the Box parameters. The arguments provide the starting point of the box which may be the upper left hand corner(ULHC) or bottom righthand corner coordinates(BRHC) of the Box.

Specified by:: init in interface Drawable
Overrides:: init in class Shapes

Parameters:: x - the x coordinate of the starting position.; y - the y coordinate of the starting poistion.

setCurrentPosition

public void setCurrentPosition(java.awt.Point cp)

Sets the current position.

Specified by:: setCurrentPosition in interface Drawable
Overrides:: setCurrentPosition in class Shapes

Parameters:: cp - Coordinate of the current position.

drawInteractive

public void drawInteractive(java.awt.Graphics2D g)

Draws interactively on a Graphics context g. This API does not check whether the Box overflows the borders of the component. This method uses the XOR paint mode. It erases the previously drawn shape and draws a new shape in its place.

Specified by:: drawInteractive in interface Drawable

Parameters:: g - the graphics object on which the shape is to be drawn.

drawPermanent

public void drawPermanent(java.awt.Graphics2D g)

Draws on a Graphics context g.

Parameters:: g - the graphics object on which the shape is to be drawn.

drawSegment

protected void drawSegment(java.awt.Graphics2D g)

Draws a segment of the curve.

Parameters:: g - the graphics object over which the shape is drawn.

draw

public void draw(java.awt.Graphics2D g)

Draws the shape again

Specified by:: draw in interface Drawable

Parameters:: g - the graphics object over which the shape is drawn.

move

public void move(java.awt.Graphics2D g,
                 int diffx,
                 int diffy)

Description copied from interface: Drawable

Moves the shape by a specified displacement.

Specified by:: move in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:: x - the displacement.; y - the displacement.

erase

public void erase(java.awt.Graphics2D g)