main
Class TheSky

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Window
              java.awt.Frame
                  main.TheSky

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

public class TheSky
extends java.awt.Frame

This frame shows the postions of candidates, the sun, and the moon on the sky graphically.

Here is what the controls are like:

Important features:

• [6] The "Redraw" button. Click if you change the epoc, HA/DEC range, date, or time to see the change.
• [7] The "Reload" button. Reloads the candidates from the database.
• [14] The "Default Range" button. Click to rest the range to the default values. Also seems to restore control when the Sky canvas goes non-responsive.
• [21] The "Now" button. Sets the date and time to the current values and redraws.
• [22] The "location" Choice. Choose which site you wish the Sky to reflect.
• [23] The "Time Zone" Choice. Used in conjunction with the date and time fields.

Helpful features:

• [0] Left clicking and dragging on the Sky will allow you to create a box to quickly zoom in. Execute the zoom by middle clicking (or alt + left mouse).
• [0,16,17] Right clicking and/or dragging will show a box representing the telescopes field-of-view with the central RA and DEC displayed at the top. The field size can be set throught the "field width" and "field height" TextFields.
• [2] The "HA --> RA" button will toggel the x-axis labels between hour angle and right ascention (NOTE: the "Min HA" and "Max HA" fields always represent hour angle.
• [0,18] If you zoom in on a standard star field, all of the standarts of that field will be shown. By right clicking, you can see where a good spot to point the telescope is in order to get several standards. Color and magnitude information about the standards in the field box can be obtained by clicking on "Show Field Info"
• [13] The "2x" button will zoom out to twice the current range.

Other features:

• [1] Set the "eqnx" field to the epoc of you choice. Valid values are floats like 2000.0 or 1999.5
• [3] The airmass lines can be toggled on/off with the "Air Mass Lines" button.
• [4] The sun and Moon can be toggled on/off with the Sun/Moon button.
• [5] The Standards button toggles the displaying of the Landolt standards on/off.
• [8] The "cancel" button closes the window (WhatsUp use only).
• [9,10,11,12] The Min/Max HA/DEC fields can be used to specify the range of the Sky (click "redraw" when set).
• [15] The "priority >=" field determines which candidates are displayed (click "redraw" if changed).
• [19,20] The date and time TextFields allow the user to specify what time to draw the sky for.

The information below pertains to the java sorce code for the applet only and is not vital for its use.

Additional Notes:

This page describes the TheSky applet.

Last Modified by:

Adarsh Uppula

Last Modified on:

12/21/2005

See Also:

Frame, Serialized Form

Since:

JDK 1.1

Nested Class Summary

class	TheSky.FieldInfo this frame shows more info about objects in the field of view box
class	TheSky.NameXY class that holds the name and x-y positon for a candidate/standard
class	TheSky.Sky the actual canvas that draws the sky

Field Summary

java.awt.Font	bfont
static java.text.DateFormat	dateDF
double	defaultMaxDEC
double	defaultMaxHA
double	defaultMinDEC
double	defaultMinHA
double	elev
TheSky.FieldInfo	fieldInfo
Sixty	lat
Sixty	longit
java.awt.Font	sfont
java.awt.Button	showFieldInfo
java.awt.TextField	teqnx
java.awt.TextField	tfieldHeight
java.awt.TextField	tfieldWidth
static java.text.DateFormat	timeDF
java.awt.TextField	tminOAP
static java.lang.String	url
static java.lang.String	url2
UserWait	uw
WhatData	wd

Fields inherited from class java.awt.Frame

CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

TheSky(WhatData wd2)

Method Summary

void	addCancelButton()
double	getMaxDEC() reads the maximum DEC from the TextField
double	getMaxHA() reads the maximum HA from the TextField
double	getMinDEC() reads the minimum DEC from the TextField
double	getMinHA() reads the minimum HA from the TextField
double	getTZOffset(java.util.TimeZone timeZone, JulianDate julDate) get the offset from UT in days for a timezone
static void	main(java.lang.String[] args)
static double	roundToSigFigs(double d, int sigFigs) rounds of a number to a given number of places
void	setNewLocation()

Methods inherited from class java.awt.Frame

addNotify, getAccessibleContext, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated

Methods inherited from class java.awt.Window

addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getInputContext, getListeners, getLocale, getMostRecentFocusOwner, getOwnedWindows, getOwner, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isShowing, pack, postEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, setAlwaysOnTop, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setLocationByPlatform, setLocationRelativeTo, show, toBack, toFront

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, update, validate

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, dispatchEvent, enable, enable, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.MenuContainer

getFont, postEvent

Field Detail

url

public static final java.lang.String url

See Also:

Constant Field Values

url2

public static final java.lang.String url2

See Also:

Constant Field Values

dateDF

public static java.text.DateFormat dateDF

timeDF

public static java.text.DateFormat timeDF

bfont

public java.awt.Font bfont

sfont

public java.awt.Font sfont

wd

public WhatData wd

lat

public Sixty lat

longit

public Sixty longit

elev

public double elev

tminOAP

public java.awt.TextField tminOAP

tfieldWidth

public java.awt.TextField tfieldWidth

tfieldHeight

public java.awt.TextField tfieldHeight

teqnx

public java.awt.TextField teqnx

showFieldInfo

public java.awt.Button showFieldInfo

fieldInfo

public TheSky.FieldInfo fieldInfo

uw

public UserWait uw

defaultMinHA

public double defaultMinHA

defaultMaxHA

public double defaultMaxHA

defaultMinDEC

public double defaultMinDEC

defaultMaxDEC

public double defaultMaxDEC

Constructor Detail

TheSky

public TheSky(WhatData wd2)

Method Detail

main

public static void main(java.lang.String[] args)

addCancelButton

public void addCancelButton()

setNewLocation

public void setNewLocation()

getTZOffset

public double getTZOffset(java.util.TimeZone timeZone,
                          JulianDate julDate)

get the offset from UT in days for a timezone

getMinHA

public double getMinHA()

reads the minimum HA from the TextField

getMaxHA

public double getMaxHA()

reads the maximum HA from the TextField

getMinDEC

public double getMinDEC()

reads the minimum DEC from the TextField

getMaxDEC

public double getMaxDEC()

reads the maximum DEC from the TextField

roundToSigFigs

public static double roundToSigFigs(double d,
                                    int sigFigs)

rounds of a number to a given number of places