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Class pinball.log.ViewerCanvas 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----pinball.log.ViewerCanvas
public class ViewerCanvas
extends Canvas
Used to display the frame from the log file.

Variable Index

o frameBuffer
The image to draw to.
o graphicsContext
Where to draw to off screen.
o height
The y size of the canvas (image).
o model
The greyscale values for the painting of the image.
o myImage
The image from the camera.
o width
The x size of the canvas (image).

Constructor Index

o ViewerCanvas()
Used in the extended classed.
o ViewerCanvas(int, int)
Initalize with the size and create the color table.

Method Index

o getMinimumSize()
Method used in creating the canvas.
o getPreferredSize()
Method used in creating the canvas.
o makeImage()
Make the off screen image to draw to.
o paint(Graphics)
Draw the images.
o setFlippers(Point, Point)
Set the locations of the flippers.
o update(Graphics)
Called when the window is updated.
o updateFrame(CameraFrame, int, int)
Update the image's data.

Variables

o myImage 
 protected Image myImage
The image from the camera.

o model 
 protected ColorModel model
The greyscale values for the painting of the image.

o width 
 protected int width
The x size of the canvas (image).

o height 
 protected int height
The y size of the canvas (image).

o graphicsContext 
 protected Graphics graphicsContext
Where to draw to off screen.

o frameBuffer 
 protected Image frameBuffer
The image to draw to.

Constructors

o ViewerCanvas 
 public ViewerCanvas(int w,
                     int h)
Initalize with the size and create the color table.

Parameters:
w - width of the image.
h - height of the image.
o ViewerCanvas 
 public ViewerCanvas()
Used in the extended classed.

Methods

o makeImage 
 public void makeImage()
Make the off screen image to draw to.

o updateFrame 
 public void updateFrame(CameraFrame frame,
                         int x,
                         int y)
Update the image's data. Draw to the off screen image.

Parameters:
frame - the camera's frame.
x - the ball's x location.
y - the ball's y location.
o paint 
 public void paint(Graphics g)
Draw the images.

Overrides:
paint in class Canvas
o update 
 public void update(Graphics g)
Called when the window is updated.

Overrides:
update in class Component
o setFlippers 
 public void setFlippers(Point left,
                         Point right)
Set the locations of the flippers.

Parameters:
left - left flipper's location.
right - right flipper's location.
o getPreferredSize 
 public Dimension getPreferredSize()
Method used in creating the canvas. Sets up the size.

Overrides:
getPreferredSize in class Component
o getMinimumSize 
 public Dimension getMinimumSize()
Method used in creating the canvas. Sets up the size.

Overrides:
getMinimumSize in class Component 
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