## org.jfree.chart.plot.dial
Class DialPointer

    java.lang.Object
      org.jfree.chart.plot.dial.AbstractDialLayer
          org.jfree.chart.plot.dial.DialPointer

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, DialLayer, org.jfree.util.PublicCloneable

Direct Known Subclasses:
  DialPointer.Pin, DialPointer.Pointer

    public abstract class DialPointer

extends AbstractDialLayer
implements DialLayer, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A base class for the pointer in a `DialPlot`.

Since:
  1.0.7
See Also:
  Serialized Form

Nested Class Summary
`static class` `DialPointer.Pin` A dial pointer that draws a thin line (like a pin).
`static class` `DialPointer.Pointer` A dial pointer.

Constructor Summary
`protected` `DialPointer()` Creates a new `DialPointer` instance.
`protected` `DialPointer(int datasetIndex)` Creates a new pointer for the specified dataset.

Method Summary
`java.lang.Object` `clone()` Returns a clone of the pointer.
`boolean` `equals(java.lang.Object obj)` Checks this instance for equality with an arbitrary object.
`int` `getDatasetIndex()` Returns the dataset index that the pointer maps to.
`double` `getRadius()` Returns the radius of the pointer, as a percentage of the dial's framing rectangle.
`int` `hashCode()` Returns a hash code.
`boolean` `isClippedToWindow()` Returns `true` to indicate that this layer should be clipped within the dial window.
`void` `setDatasetIndex(int index)` Sets the dataset index for the pointer and sends a `DialLayerChangeEvent` to all registered listeners.
`void` `setRadius(double radius)` Sets the radius of the pointer and sends a `DialLayerChangeEvent` to all registered listeners.

Methods inherited from class org.jfree.chart.plot.dial.AbstractDialLayer
`addChangeListener, hasListener, isVisible, notifyListeners, removeChangeListener, setVisible`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.jfree.chart.plot.dial.DialLayer
`addChangeListener, draw, hasListener, isVisible, removeChangeListener`

Constructor Detail

### DialPointer

    protected DialPointer()

  Creates a new `DialPointer` instance.

### DialPointer

    protected DialPointer(int datasetIndex)

  Creates a new pointer for the specified dataset.

  Parameters:
    `datasetIndex` - the dataset index.

Method Detail

### getDatasetIndex

    public int getDatasetIndex()

  Returns the dataset index that the pointer maps to.

  Returns:
    The dataset index.
  See Also:
    `getDatasetIndex()`

### setDatasetIndex

    public void setDatasetIndex(int index)

  Sets the dataset index for the pointer and sends a `DialLayerChangeEvent` to all registered listeners.

  Parameters:
    `index` - the index.
  See Also:
    `getDatasetIndex()`

### getRadius

    public double getRadius()

  Returns the radius of the pointer, as a percentage of the dial's framing rectangle.

  Returns:
    The radius.
  See Also:
    `setRadius(double)`

### setRadius

    public void setRadius(double radius)

  Sets the radius of the pointer and sends a `DialLayerChangeEvent` to all registered listeners.

  Parameters:
    `radius` - the radius.
  See Also:
    `getRadius()`

### isClippedToWindow

    public boolean isClippedToWindow()

  Returns `true` to indicate that this layer should be clipped within the dial window.

  Specified by:
    `isClippedToWindow` in interface `DialLayer`
  Returns:
    `true`.

### equals

    public boolean equals(java.lang.Object obj)

  Checks this instance for equality with an arbitrary object.

  Overrides:
    `equals` in class `AbstractDialLayer`
  Parameters:
    `obj` - the object (`null` not permitted).
  Returns:
    A boolean.

### hashCode

    public int hashCode()

  Returns a hash code.

  Overrides:
    `hashCode` in class `AbstractDialLayer`
  Returns:
    A hash code.

### clone

    public java.lang.Object clone()
                           throws java.lang.CloneNotSupportedException

  Returns a clone of the pointer.

  Specified by:
    `clone` in interface `org.jfree.util.PublicCloneable`
  Overrides:
    `clone` in class `AbstractDialLayer`
  Returns:
    a clone.
  Throws:
    `java.lang.CloneNotSupportedException` - if one of the attributes cannot be cloned.