# abstract InterpolationMethod(Null<Int>)

#### package openfl.display

####

Available on all platforms

The InterpolationMethod class provides values for the `interpolationMethod` parameter in the `Graphics.beginGradientFill()` and `Graphics.lineGradientStyle()` methods. This parameter determines the RGB space to use when rendering the gradient.

### Variables

###

`inline read onlyLINEAR_RGB:InterpolationMethod = 0`

Specifies that the RGB interpolation method should be used. This means that the gradient is rendered with exponential sRGB(standard RGB) space. The sRGB space is a W3C-endorsed standard that defines a non-linear conversion between red, green, and blue component values and the actual intensity of the visible component color.

For example, consider a simple linear gradient between two colors(with the `spreadMethod` parameter set to `SpreadMethod.REFLECT`). The different interpolation methods affect the appearance as follows:

###

`inline read onlyRGB:InterpolationMethod = 1`

Specifies that the RGB interpolation method should be used. This means that the gradient is rendered with exponential sRGB(standard RGB) space. The sRGB space is a W3C-endorsed standard that defines a non-linear conversion between red, green, and blue component values and the actual intensity of the visible component color.

For example, consider a simple linear gradient between two colors(with the `spreadMethod` parameter set to `SpreadMethod.REFLECT`). The different interpolation methods affect the appearance as follows: