func Hue(shift float32) Filter {
	p := normalizeHue(shift / 360)
	if p == 0 {
		return &copyimageFilter{}
	}

	return &colorFilter{
		fn: func(px pixel) pixel {
			h, s, l := convertRGBToHSL(px.r, px.g, px.b)
			h = normalizeHue(h + p)
			r, g, b := convertHSLToRGB(h, s, l)
			return pixel{r, g, b, px.a}
		},
	}
}
// Hue creates a filter that rotates the hue of an image.
// The shift parameter is the hue angle shift, typically in range (-180, 180).
// The shift = 0 gives the original image.
Hue creates a filter that rotates the hue of an image.
The shift parameter is the hue angle shift, typically in range (-180, 180).
The shift = 0 gives the original image.
// Hue creates a filter that rotates the hue of an image . // The shift parameter is the hue angle shift typically in range ( - 180 180 ) . // The shift = 0 gives the original image .
func Hue(shift float32) Filter {
	p := normalizeHue(shift / 360)
	if p == 0 {
		return &copyimageFilter{}
	}
	return &colorFilter{
		fn: func(px pixel) pixel {
			h, s, l := convertRGBToHSL(px.r, px.g, px.b)
			h = normalizeHue(h + p)
			r, g, b := convertHSLToRGB(h, s, l)
			return pixel{r, g, b, px.a}
		},
	}
}
func Hue ( shift float32 ) Filter { p := normalizeHue ( shift / 360 ) if p == 0 { return & copyimageFilter { } } return & colorFilter { fn : func ( px pixel ) pixel { h , s , l := convertRGBToHSL ( px . r , px . g , px . b ) h = normalizeHue ( h + p ) r , g , b := convertHSLToRGB ( h , s , l ) return pixel { r , g , b , px . a } } , } }
Hue creates a filter that rotates the hue of an image.
Hue creates a filter that rotates the hue of an image .