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com.vistech.shapes
Class Line

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

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

public class Line
extends Shapes
implements Drawable

Represents a interactively drawable line.

Version:: 1.0 29 July 2001
Author:: Larry Rodrigues
See Also:: Serialized Form

Field Summary

protected double slope


protected int tol


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

Line()


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

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

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 init(int x, int y)
          Initializes the Line 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

tol

protected int tol

slope

protected double slope

Constructor Detail

Line

public Line()

Method Detail

init

public void init(int x,
                 int y)

Initializes the Line parameters. The arguments provide the starting position of the Line.

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:: x - the x coordinate of the current position.; y - the y coordinate of the current poistion.

drawInteractive

public void drawInteractive(java.awt.Graphics2D g)

Draws an Line interactively on a Graphics context g. This API does not check whether the Line 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 an Line on a Graphics context g. This API does not check whether the Box overflows the borders of the component.

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

erase

public void erase(java.awt.Graphics2D g)

Description copied from interface: Drawable

Erase the shape.

Specified by:: erase in interface Drawable

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

Parameters:: g - the graphcs context on which the shape was drawn.

contains

public boolean contains(java.awt.Graphics2D g,
                        int x,
                        int y)

Description copied from class: Shapes

Vhecks whether the specified point contained in the shape.

Overrides:: contains in class Shapes

Following copied from class: com.vistech.shapes.Shapes

Parameters:: g - the graphics context on which the shape was drawn.; x - the coordinate of the point that is being checked for containment.; y - the coordinate of the point that is being checked for containment.

drawSmallRects

public void drawSmallRects(java.awt.Graphics2D g)