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package color
import "github.com/lucasb-eyer/go-colorful"
type RGB struct {
Red float64 `json:"red"`
Green float64 `json:"green"`
Blue float64 `json:"blue"`
}
func (rgb RGB) AtIntensity(intensity float64) RGB {
hue, sat, _ := colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}.Hsv()
hsv2 := colorful.Hsv(hue, sat, intensity)
return RGB{Red: hsv2.R, Green: hsv2.G, Blue: hsv2.B}
}
func (rgb RGB) Bytes() [3]uint8 {
return [3]uint8{
uint8(rgb.Red * 255.0),
uint8(rgb.Green * 255.0),
uint8(rgb.Blue * 255.0),
}
}
func (rgb RGB) ToHS() HueSat {
hue, sat, _ := colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}.Hsv()
return HueSat{Hue: hue, Sat: sat}
}
func (rgb RGB) ToXY() XY {
x, y, z := (colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}).Xyz()
return XY{
X: x / (x + y + z),
Y: y / (x + y + z),
}
}
func (rgb RGB) Normalize() (RGB, float64) {
hue, sat, value := colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}.Hsv()
hs := HueSat{Hue: hue, Sat: sat}
newRGB := hs.ToRGB()
return newRGB, value
}