Package com.singularsys.jepexamples.applets

# Class ParametrisedCanvas

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPanel
com.singularsys.jepexamples.applets.AbstractCanvas
com.singularsys.jepexamples.applets.ParametrisedCanvas

All Implemented Interfaces:
  `ComponentListener`, `KeyListener`, `MouseListener`, `MouseMotionListener`, `MouseWheelListener`, `ImageObserver`, `MenuContainer`, `Serializable`, `EventListener`, `Accessible`

public class ParametrisedCanvas extends AbstractCanvas
This class plots parametrised curves specified by two Jep expressions.

See Also:
  - Serialized Form

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class javax.swing.JPanel

  `JPanel.AccessibleJPanel`

  ## Nested classes/interfaces inherited from class javax.swing.JComponent

  `JComponent.AccessibleJComponent`

  ## Nested classes/interfaces inherited from class java.awt.Container

  `Container.AccessibleAWTContainer`

  ## Nested classes/interfaces inherited from class java.awt.Component

  `Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected final Jep`
  `jep`
  Math parser
  `protected Variable`
  `t`
  "x" variable
  `protected Node`
  `xExpression`
  Expression to evaluate
  `protected Node`
  `yExpression`

  ### Fields inherited from class com.singularsys.jepexamples.applets.AbstractCanvas

  `axisColor, bgColor, cenX, cenY, defaultOffX, defaultOffY, defaultScaleX, defaultScaleY, dimensions, gridColor, labelColor, labelFont, lastpos, offX, offY, popup, scaleFont, scaleX, scaleY, showGrid, showScale, showTime, strategy`

  ### Fields inherited from class javax.swing.JComponent

  `listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

  ### Fields inherited from class java.awt.Component

  `accessibleContext, 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

  Constructors
  Constructor
  Description
  `ParametrisedCanvas(Jep jep, Variable t, double min, double max, int steps)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `dump()`
  Dump the coordinates on the standard output
  `protected long`
  `getNumPts()`
  The number of points which are calculated
  `Variable`
  `getT()`
  `double`
  `getTMax()`
  `double`
  `getTMin()`
  `int`
  `getTSteps()`
  `Node`
  `getXExpression()`
  `protected double`
  `getXValue(double tValue)`
  `Node`
  `getYExpression()`
  `protected double`
  `getYValue(double tValue)`
  `protected void`
  `paintCurve(Graphics g)`
  Paints the graph of the function.
  `void`
  `rescaled()`
  Called when scale or offset changed Default action is to call repaint
  `void`
  `setRange(double min, double max, int steps)`
  `void`
  `setT(Variable t)`
  `void`
  `setXExpression(Node xExpr)`
  `void`
  `setYExpression(Node yExpr)`

  ### Methods inherited from class com.singularsys.jepexamples.applets.AbstractCanvas

  `center, clipX, clipY, componentHidden, componentMoved, componentResized, componentShown, getOffX, getOffY, getPopup, getScaleX, getScaleY, keyPressed, keyReleased, keyTyped, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseReleased, mouseWheelMoved, paint, paintAxes, paintCanvas, paintGrid, paintScale, paintTime, paintWhite, reset, resetCanvas, resized, setOffset, setScale, shiftCanvas, update, xAbsolute, xRelative, yAbsolute, yRelative, zoomCanvas`

  ### Methods inherited from class javax.swing.JPanel

  `getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI`

  ### Methods inherited from class javax.swing.JComponent

  `addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction`

  ### Methods inherited from class java.awt.Container

  `add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree`

  ### Methods inherited from class java.awt.Component

  `action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Field Details

  - ### jep

    protected final Jep jep
    Math parser

  - ### xExpression

    protected Node xExpression
    Expression to evaluate

  - ### yExpression

    protected Node yExpression

  - ### t

    protected Variable t
    "x" variable

- ## Constructor Details

  - ### ParametrisedCanvas

    public ParametrisedCanvas(Jep jep, Variable t, double min, double max, int steps)
    Parameters:
      `jep` - The Jep instance
      `t` - A Variable object holding the parameter
      `min` - minimum value for parameter
      `max` - maximum value for parameter
      `steps` - number of line segments to draw

- ## Method Details

  - ### getT

    public Variable getT()

  - ### setT

    public void setT(Variable t)

  - ### getXExpression

    public Node getXExpression()

  - ### getYExpression

    public Node getYExpression()

  - ### setXExpression

    public void setXExpression(Node xExpr)

  - ### setYExpression

    public void setYExpression(Node yExpr)

  - ### getTMin

    public double getTMin()

  - ### getTMax

    public double getTMax()

  - ### getTSteps

    public int getTSteps()

  - ### setRange

    public void setRange(double min, double max, int steps)

  - ### getYValue

    protected double getYValue(double tValue)
    Returns:
      The value of the function at an x value of the parameter. NaN on errors

  - ### getXValue

    protected double getXValue(double tValue)

  - ### paintCurve

    protected void paintCurve(Graphics g)
    Paints the graph of the function. A null argument cause the values to be dumped to stdout.
    Specified by:
      `paintCurve` in class `AbstractCanvas`

  - ### rescaled

    public void rescaled()
    Description copied from class: `AbstractCanvas`
    Called when scale or offset changed Default action is to call repaint
    Overrides:
      `rescaled` in class `AbstractCanvas`

  - ### dump

    public void dump()
    Dump the coordinates on the standard output
    Specified by:
      `dump` in class `AbstractCanvas`

  - ### getNumPts

    protected long getNumPts()
    Description copied from class: `AbstractCanvas`
    The number of points which are calculated
    Specified by:
      `getNumPts` in class `AbstractCanvas`
    Returns:
      the number of points