Class: FPSDisplay

FPSDisplay

new FPSDisplay()

Creates a new FPSDisplay object. Use this class to create a field at the top of the browser that displays the current frames per second and total number of elements in an optional passed array. Note: FPSDisplay will not function in browsers whose Date object does not support Date.now(). These include IE6, IE7, and IE8.
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Members

<private, static> _frameCount :number

Holds the total number of frames between seconds.
Type:
  • number
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<private, static> _time :number

The current time.
Type:
  • number
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<private, static> _timeLastFrame :number

The time at the last frame.
Type:
  • number
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<private, static> _timeLastSecond :number

The time the last second was sampled.
Type:
  • number
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<static> active :boolean

Set to false to stop requesting animation frames.
Type:
  • boolean
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<static> fps :number

Frames per second.
Type:
  • number
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<static> name :string

Name
Type:
  • string
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<static> totalItems :number

Total items.
Type:
  • number
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<private> el

A reference to the DOM element containing the display.
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Methods

<static> hide()

Hides FPSDisplay from DOM.
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<static> show()

Shows FPSDisplay from DOM.
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<static> update()

Initializes the FPSDisplay.
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<static> update(opt_totalItems)

If 1000ms have elapsed since the last evaluated second, fps is assigned the total number of frames rendered and its corresponding textNode is updated. The total number of elements is also updated.
Parameters:
Name Type Argument Description
opt_totalItems Number <optional>
 The total items in the system.
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