import (
	"image/color"
)

var (
	// Black is an opaque black uniform image.
	Black = NewUniform(color.Black)
	// White is an opaque white uniform image.
	White = NewUniform(color.White)
	// Transparent is a fully transparent uniform image.
	Transparent = NewUniform(color.Transparent)
	// Opaque is a fully opaque uniform image.
	Opaque = NewUniform(color.Opaque)
)

// Uniform is an infinite-sized [Image] of uniform color.

		NewCMYK(r),
		NewGray(r),
		NewGray16(r),
		NewNRGBA(r),
		NewNRGBA64(r),
		NewNYCbCrA(r, YCbCrSubsampleRatio444),
		NewPaletted(r, palette.Plan9),
		NewRGBA(r),
		NewRGBA64(r),
		NewUniform(color.RGBA64{}),
		NewYCbCr(r, YCbCrSubsampleRatio444),
		r,
	}
	for _, tc := range testCases {
		switch tc := tc.(type) {
		// Most of the concrete image types in the testCases implement the

	r1, g1, b1, a1 := c1.RGBA()
	return r0 == r1 && g0 == g1 && b0 == b1 && a0 == a1
}

func fillBlue(alpha int) image.Image {
	return image.NewUniform(color.RGBA{0, 0, uint8(alpha), uint8(alpha)})
}

func fillAlpha(alpha int) image.Image {
	return image.NewUniform(color.Alpha{uint8(alpha)})
}

func vgradGreen(alpha int) image.Image {
	m := image.NewRGBA(image.Rect(0, 0, 16, 16))
	for y := 0; y < 16; y++ {

		{"NewGray16", Func, 0},
		{"NewNRGBA", Func, 0},
		{"NewNRGBA64", Func, 0},
		{"NewNYCbCrA", Func, 6},
		{"NewPaletted", Func, 0},
		{"NewRGBA", Func, 0},
		{"NewRGBA64", Func, 0},
		{"NewUniform", Func, 0},
		{"NewYCbCr", Func, 0},
		{"Opaque", Var, 0},
		{"Paletted", Type, 0},
		{"Paletted.Palette", Field, 0},
		{"Paletted.Pix", Field, 0},
		{"Paletted.Rect", Field, 0},

pkg image, func NewNRGBA64(Rectangle) *NRGBA64
pkg image, func NewPaletted(Rectangle, color.Palette) *Paletted
pkg image, func NewRGBA(Rectangle) *RGBA
pkg image, func NewRGBA64(Rectangle) *RGBA64
pkg image, func NewUniform(color.Color) *Uniform
pkg image, func NewYCbCr(Rectangle, YCbCrSubsampleRatio) *YCbCr
pkg image, func Pt(int, int) Point
pkg image, func Rect(int, int, int, int) Rectangle