blend

Documentation

Index

• func Darken(bg, fg color.Color) color.Color
• func Lighten(bg, fg color.Color) color.Color
• func Normal(bg, fg color.Color) color.Color
• func Subtract(bg, fg color.Color) color.Color
• type Blender
  • func Blend(blendingStrategy BlendingStrategy) Blender
• type BlendingStrategy

Functions

func Darken

func Darken(bg, fg color.Color) color.Color

Subtract return a blending between the two colors that uses the lower values of each channel of the two colors before applying a normal blend

func Lighten

func Lighten(bg, fg color.Color) color.Color

Subtract return a blending between the two colors that uses the higher values of each channel of the two colors before applying a normal blend

func Normal

func Normal(bg, fg color.Color) color.Color

Normal returns a blending between the two colors based on the alpha channel of the foreground color

func Subtract

func Subtract(bg, fg color.Color) color.Color

Subtract return a blending between the two colors that makes a difference between the two before applying a normal blend

Types

type Blender

type Blender func(image.Image, image.Image, image.Point, mask.Mask) image.Image

Blender is a function that receives 2 images, a background and a foreground one a position for the origin of the second and a mask to interpolate with

func Blend

func Blend(blendingStrategy BlendingStrategy) Blender

Blend returns a Blender function using the given BlendingStrategy

type BlendingStrategy

type BlendingStrategy func(color.Color, color.Color) color.Color

BlendingStrategy receives two colors and returns a blend between the two