net.sourceforge.webcompmath.draw
Class Crosshair

java.lang.Object
  extended by java.awt.Component
      extended by net.sourceforge.webcompmath.draw.Drawable
          extended by net.sourceforge.webcompmath.draw.DrawGeometric
              extended by net.sourceforge.webcompmath.draw.Crosshair
All Implemented Interfaces:
java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, Computable
Direct Known Subclasses:
WCMCrossHairBean

public class Crosshair
extends DrawGeometric

A Crosshair is a small cross, 15 pixels wide and high, that is drawn in a CoordinateRect at a specified point. A Crosshair is a Computable object, so should be added to a Controller to be recomputed when the coordinates of the point change.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class java.awt.Component
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy
 
Field Summary
 
Fields inherited from class net.sourceforge.webcompmath.draw.DrawGeometric
a, ARROW_ABSOLUTE, ARROW_RELATIVE, b, c, color, CROSS, d, DASHED_STYLE, fillColor, h, HALF_LINE_ABSOLUTE, HALF_LINE_RELATIVE, INFINITE_LINE_ABSOLUTE, INFINITE_LINE_RELATIVE, LINE_ABSOLUTE, LINE_CENTERED, LINE_RELATIVE, lineStyle, lineWidth, OVAL_ABSOLUTE, OVAL_CENTERED, OVAL_RELATIVE, RECT_ABSOLUTE, RECT_CENTERED, RECT_RELATIVE, shape, SOLID_STYLE, v, x1, x2, y1, y2
 
Fields inherited from class net.sourceforge.webcompmath.draw.Drawable
canvas, coords
 
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
Crosshair(Value x, Function f)
          Create a cross that appears on the graph of the function y=f(x) at the point with coordinates (x,f(x)).
Crosshair(Value x, Value y)
          Create a cross that appears at the point with coordinates (x,y).
 
Method Summary
 
Methods inherited from class net.sourceforge.webcompmath.draw.DrawGeometric
compute, draw, getColor, getFillColor, getH, getLineStyle, getLineWidth, getShape, getV, getX1, getX2, getY1, getY2, setColor, setFillColor, setH, setLineStyle, setLineWidth, setPoints, setPoints, setShape, setV, setX1, setX2, setY1, setY2
 
Methods inherited from class net.sourceforge.webcompmath.draw.Drawable
getVisible, needsRedraw, setOwnerData, setVisible
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, update, validate
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Crosshair

public Crosshair(Value x,
                 Value y)
Create a cross that appears at the point with coordinates (x,y).

Parameters:
x - x coord of crosshair
y - y coord of crosshair

Crosshair

public Crosshair(Value x,
                 Function f)
Create a cross that appears on the graph of the function y=f(x) at the point with coordinates (x,f(x)). Function f should be a function of one variable.

Parameters:
x - x coord of crosshair
f - function to use to find the y coord of crosshair