Class TracePlanePanel

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----Plane
                           |
                           +----TracePlanePanel

public class TracePlanePanel

extends Plane

Author:

Jonathan A. Poritz

backgroundgraphics

The Graphics object for drawing the background image of the decomposed trace plane.

backgroundimage

An image into which to store the decomposition of the current window on the trace plane.

CX

The abstract x-coordinate of the left side of the trace plane display.

CY

The abstract y-coordinate of the upper edge of the trace plane display.

decomposed

Tells whether the trace plane has been decomposed since last window change.

domaincolors

Array of colors for the pixels of the trace plane when it has been decomposed.

inputpanel

A reference to the containing inputpanel.

prev

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in abstract coordinates.

previ

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in pixel coordinates.

SX

The width, in abstract units, of the trace plane display.

SY

The height, in abstract units, of the trace plane display.

X

The width, in pixels, of the trace plane display.

Y

The height, in pixels, of the trace plane display.

TracePlanePanel(InputPanel)

Constructor for TracePlanePanels.

decompose()

Computes a decomposition of the visible portion of the trace plane by the combinatorial type of the corresponding fundamental domain, building a color image from the decompostion which can then be used as the background of the trace plane display; then redraws the trace plane.

paint(Graphics)

Paint the TracePlanePanel, either painting the simple plane or the background image of the decomposition, then putting a point at the currently selected trace and writing all the tickmarks.

zoom(double)

Scales the size of the visible window onto the trace plane.

 public InputPanel inputpanel

A reference to the containing inputpanel.

See Also:

inputpanel

 protected double prev[]

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in abstract coordinates.

 protected int previ[]

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in pixel coordinates.

 public boolean decomposed

Tells whether the trace plane has been decomposed since last window change.

 public Color domaincolors[][]

Array of colors for the pixels of the trace plane when it has been decomposed.

 public static final double CX

The abstract x-coordinate of the left side of the trace plane display.

 public static final double CY

The abstract y-coordinate of the upper edge of the trace plane display.

 public static final double SX

The width, in abstract units, of the trace plane display.

 public static final double SY

The height, in abstract units, of the trace plane display.

 public static final int X

The width, in pixels, of the trace plane display. Good defaults are:

200

for small screens,

300

for large screens (then use 875x450 in HTML), and

500

for screen-grabbing huge images (then use 1000x650 in HTML)

 public static final int Y

The height, in pixels, of the trace plane display. Good defaults are:

200

for small screens,

300

for large screens (then use 875x450 in HTML), and

500

for screen-grabbing huge images (then use 1000x650 in HTML)

 public Image backgroundimage

An image into which to store the decomposition of the current window on the trace plane.

 public Graphics backgroundgraphics

The Graphics object for drawing the background image of the decomposed trace plane.

 public TracePlanePanel(InputPanel nptpnl)

Constructor for TracePlanePanels.

Parameters:

nptpnl - the ambient inputpanel

 public void paint(Graphics g)

Paint the TracePlanePanel, either painting the simple plane or the background image of the decomposition, then putting a point at the currently selected trace and writing all the tickmarks.

Parameters:

g - the Graphics object upon which to paint the TracePlanePanel

Overrides:

paint in class Plane

 public void zoom(double factor)

Scales the size of the visible window onto the trace plane.

Parameters:

factor - the scaling factor, can be any positive number

 public void decompose()

Computes a decomposition of the visible portion of the trace plane by the combinatorial type of the corresponding fundamental domain, building a color image from the decompostion which can then be used as the background of the trace plane display; then redraws the trace plane.