Adobe® Flex® 4 Language Reference
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mx.charts.chartClasses 
RenderData 
Packagemx.charts.chartClasses
Classpublic class RenderData
InheritanceRenderData Inheritance Object
Subclasses AreaSeriesRenderData, BarSeriesRenderData, BubbleSeriesRenderData, ColumnSeriesRenderData, HLOCSeriesRenderData, LineSeriesRenderData, PieSeriesRenderData, PlotSeriesRenderData

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

RenderData structures are used by chart elements to store all of the relevant values and data needed to fully render the chart. Storing these values in a separate structure lets chart elements decouple their rendering from their assigned properties and data as necessary. This ability is used by the chart effects: effects such as SeriesInterpolate substitute temporary values calculated from previous and future renderData structures. Effects such as SeriesSlide and SeriesZoom substitute temporary RenderData structures with values calculated to render the effect correctly.



Public Properties
 PropertyDefined By
  bounds : Rectangle
The bounds of all of the items a series displays on screen, relative to the series's coordinate system.
RenderData
  cache : Array
The list of ChartItems representing the items in the series's dataProvider.
RenderData
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  elementBounds : Array
An Array of rectangles describing the bounds of the series's ChartItems, relative to the series's coordinate system.
RenderData
  filteredCache : Array
The list of ChartItems representing the items in the series's dataProvider that remain after filtering.
RenderData
  length : uint
[read-only] The number of items represented in this render data.
RenderData
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
  visibleRegion : Rectangle
The rectangle describing the possible coordinate range that a series can display on screen.
RenderData
Public Methods
 MethodDefined By
  
RenderData(cache:Array = null, filteredCache:Array = null)
Constructor.
RenderData
  
Creates a copy of the render data.
RenderData
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
Property Detail

bounds

property
public var bounds:Rectangle

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The bounds of all of the items a series displays on screen, relative to the series's coordinate system. This value is used by the various effects during rendering. A series fills in this value when the effect calls the getElementBounds() method. A series does not need to fill in this field unless specifically requested.

cache

property 
public var cache:Array

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The list of ChartItems representing the items in the series's dataProvider.

elementBounds

property 
public var elementBounds:Array

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

An Array of rectangles describing the bounds of the series's ChartItems, relative to the series's coordinate system. Effects use this Array to generate the effect rendering. An effect calls the getElementBounds() method, which causes the series to fill in this value. A series does not need to fill in this field unless specifically requested. Effects modify this Array to relect current positions of the items during the effect duration. If this value is filled in on the series's renderData, the series renders itself based on these rectangles rather than from the series's data.

filteredCache

property 
public var filteredCache:Array

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The list of ChartItems representing the items in the series's dataProvider that remain after filtering.

length

property 
length:uint  [read-only]

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The number of items represented in this render data.



Implementation
    public function get length():uint

visibleRegion

property 
public var visibleRegion:Rectangle

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The rectangle describing the possible coordinate range that a series can display on screen. This value is used by the various effects during rendering. An effect calls the getElementBounds() method to fill in this value. A series does not need to fill in this field unless specifically requested. If left null, effects assume the visible region of an element is the bounding box of the element itself (0, 0, width, height), expressed relative to the element.

Constructor Detail

RenderData

()Constructor
public function RenderData(cache:Array = null, filteredCache:Array = null)

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Constructor.

Parameters
cache:Array (default = null) — The list of ChartItems representing the items in the series's dataProvider.
 
filteredCache:Array (default = null) — The list of ChartItems representing the items in the series's dataProvider that remain after filtering.
Method Detail

clone

()method
public function clone():RenderData

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Creates a copy of the render data. In the new copy, properties that point to other objects continue to point to the same objects as the original.

If you subclass this class, you must override this method.

Returns
RenderData — The new copy of the RenderData object.