Class Circle

java.lang.Object
   |
   +----ObjBaseClass
           |
           +----Circle

public class Circle

extends ObjBaseClass

implements DrawObject, Cloneable

baseColors

cx

cy

height

obj_id

old_height

old_width

old_x1

old_y1

r

width

x1

y1

Circle(SketchArea)

constructor

Circle(SketchArea, int)

Constructor

assemble(int)

assembles the Circle object's parameters based on application-specific format before calling superclass's BaseClassAssemble for assembling this resulting packet with the RTP header.

clean(Graphics)

the real function to clean up the object on the whiteboard

clear(Graphics)

clear the object on the display

clone()

clones a circle object by making an exact copy of this circle object with values equal to the original values, except that the starting and ending points of the newly cloned circle are translated by a value of TRANSLATE_X and TRANSLATE_Y defined in the ObjBaseClass.java.

draw(int, int, int, int, int, int)

function called to draw object passed from network

erase(Graphics, boolean)

function to erase the object while selected

getObjID()

getType()

get type of the object

mouseDown(int, int)

member function to be called when mouse down action

mouseDrag(int, int)

puclic member function called when mouse drag

mouseUp(int, int)

public member function called when mouse up event

moveUP(Graphics, int, int)

mouse up event handler while moving the object

moving(Graphics, int, int)

move current object on the whetboard

paint(Graphics)

draw the object

processInData(byte[])

retrieves Circle object's parameters from the received packet and display the circle on the drawing canvas of the whiteboard.

send()

sends this circle object to the multicast network

setPenColor(Graphics, int)

specify the color of the object

  public int x1

  public int y1

  public int r

  public int cx

  public int cy

  public int old_x1

  public int old_y1

  public int width

  public int height

  public int old_width

  public int old_height

  public Color baseColors[]

  public int obj_id

  public Circle(SketchArea parent,
                int c)

Constructor

Parameters:

parent - referent to parent class SketchArea

c - color code

Returns:

none

  public Circle(SketchArea parent)

constructor

Parameters:

parent - reference to parent SketchArea

Returns:

none

  public Object clone()

clones a circle object by making an exact copy of this circle object with values equal to the original values, except that the starting and ending points of the newly cloned circle are translated by a value of TRANSLATE_X and TRANSLATE_Y defined in the ObjBaseClass.java.

Returns:

a cloned object.

Overrides:

clone in class Object

  public boolean mouseDown(int x,
                           int y)

member function to be called when mouse down action

Parameters:

x - x value

y - y value

Returns:

true

  public boolean mouseUp(int x,
                         int y)

public member function called when mouse up event

Parameters:

x - x value

y - y value

Returns:

true

  public void send()

sends this circle object to the multicast network

  public boolean mouseDrag(int x,
                           int y)

puclic member function called when mouse drag

Parameters:

x - x value

y - y value

Returns:

true

  public void moving(Graphics g,
                     int x,
                     int y)

move current object on the whetboard

Parameters:

g - graphics context

x - x value

y - y value

Returns:

void

  public void moveUP(Graphics g,
                     int x,
                     int y)

mouse up event handler while moving the object

Parameters:

g - graphics context

x - x value

y - y value

Returns:

void

  public void paint(Graphics g)

draw the object

Parameters:

g - graphics context

Returns:

void

  public void clear(Graphics g)

clear the object on the display

Parameters:

g - graphics context

Returns:

void

  public void clean(Graphics g)

the real function to clean up the object on the whiteboard

Parameters:

g - graphics context

Returns:

void

  public void erase(Graphics g,
                    boolean send_del_req)

function to erase the object while selected

Parameters:

g - graphics context

Returns:

void

  public void setPenColor(Graphics g,
                          int c)

specify the color of the object

Parameters:

g - graphics context

c - color code

Returns:

void

  public int getType()

get type of the object

Returns:

type

  public int getObjID()

  public void assemble(int ObjectType)

assembles the Circle object's parameters based on application-specific format before calling superclass's BaseClassAssemble for assembling this resulting packet with the RTP header. This function is called by mouseUp Event.

Returns:

void

  public void processInData(byte buf[])

retrieves Circle object's parameters from the received packet and display the circle on the drawing canvas of the whiteboard.

Parameters:

buf - buffer that holds parameters in the form of byte array.

Returns:

void

  public void draw(int xx1,
                   int yy1,
                   int xx2,
                   int yy2,
                   int col,
                   int obj_id_recvd)

function called to draw object passed from network

Parameters:

xx1 - start point

yy1 - start point

xx2 - end point

yy2 - end point

Returns:

void