Phaser API Documentation

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Namespace: Alpha
Phaser.GameObjects.Components.Alpha

Members

<private> _alpha: number
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Description:

Private internal value. Holds the global alpha value.

Type:
number
Default: 1
Since: 3.0.0
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<private> _alphaBL: number
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Description:

Private internal value. Holds the bottom-left alpha value.

Type:
number
Default: 1
Since: 3.0.0
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<private> _alphaBR: number
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Description:

Private internal value. Holds the bottom-right alpha value.

Type:
number
Default: 1
Since: 3.0.0
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<private> _alphaTL: number
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Description:

Private internal value. Holds the top-left alpha value.

Type:
number
Default: 1
Since: 3.0.0
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<private> _alphaTR: number
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Description:

Private internal value. Holds the top-right alpha value.

Type:
number
Default: 1
Since: 3.0.0
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alpha: number
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Description:

The alpha value of the Game Object.

This is a global value, impacting the entire Game Object, not just a region of it.

Type:
number
Since: 3.0.0
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Only webGL alphaBottomLeft: number
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Description:

The alpha value starting from the bottom-left of the Game Object. This value is interpolated from the corner to the center of the Game Object.

Type:
number
Since: 3.0.0
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Only webGL alphaBottomRight: number
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Description:

The alpha value starting from the bottom-right of the Game Object. This value is interpolated from the corner to the center of the Game Object.

Type:
number
Since: 3.0.0
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Only webGL alphaTopLeft: number
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Description:

The alpha value starting from the top-left of the Game Object. This value is interpolated from the corner to the center of the Game Object.

Type:
number
Since: 3.0.0
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Only webGL alphaTopRight: number
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Description:

The alpha value starting from the top-right of the Game Object. This value is interpolated from the corner to the center of the Game Object.

Type:
number
Since: 3.0.0
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Methods

clearAlpha()
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Description:

Clears all alpha values associated with this Game Object.

Immediately sets the alpha levels back to 1 (fully opaque).

Returns:
Description:

This Game Object instance.

Examples:
Since: 3.0.0
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setAlpha([topLeft], [topRight], [bottomLeft], [bottomRight])
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Description:

Set the Alpha level of this Game Object. The alpha controls the opacity of the Game Object as it renders. Alpha values are provided as a float between 0, fully transparent, and 1, fully opaque.

If your game is running under WebGL you can optionally specify four different alpha values, each of which correspond to the four corners of the Game Object. Under Canvas only the topLeft value given is used.

Parameters:

name type arguments Default description
topLeft number <optional> 1

The alpha value used for the top-left of the Game Object. If this is the only value given it's applied across the whole Game Object.

topRight number <optional>

The alpha value used for the top-right of the Game Object. WebGL only.

bottomLeft number <optional>

The alpha value used for the bottom-left of the Game Object. WebGL only.

bottomRight number <optional>

The alpha value used for the bottom-right of the Game Object. WebGL only.

Returns:
Description:

This Game Object instance.

Examples:
Since: 3.0.0
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