Class LightnessExtensions

Defines extensions that allow the alteration of the lightness component of an Image using Mutate/Clone.

Inheritance
Object
LightnessExtensions
Inherited Members
Namespace: SixLabors.ImageSharp.Processing
Assembly: SixLabors.ImageSharp.dll
Syntax
public static class LightnessExtensions

Methods

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Lightness(IImageProcessingContext, Single)

Alters the lightness component of the image.

Declaration
public static IImageProcessingContext Lightness(this IImageProcessingContext source, float amount)
Parameters
Type Name Description
IImageProcessingContext source

The image this method extends.
Single amount

The proportion of the conversion. Must be greater than or equal to 0.
Returns
Type Description
IImageProcessingContext

The IImageProcessingContext to allow chaining of operations.
Remarks

A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged. Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing lighter results.

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Lightness(IImageProcessingContext, Single, Rectangle)

Alters the lightness component of the image.

Declaration
public static IImageProcessingContext Lightness(this IImageProcessingContext source, float amount, Rectangle rectangle)
Parameters
Type Name Description
IImageProcessingContext source

The image this method extends.
Single amount

The proportion of the conversion. Must be greater than or equal to 0.
Rectangle rectangle

The Rectangle structure that specifies the portion of the image object to alter.
Returns
Type Description
IImageProcessingContext

The IImageProcessingContext to allow chaining of operations.
Remarks

A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged. Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing lighter results.