func runPxl(cmd *Command, args []string) {
i := utils.ReadStdin()
triangle := pixelate.BOTH
if pxlLeft {
triangle = pixelate.LEFT
}
if pxlRight {
triangle = pixelate.RIGHT
}
if pxlRows > 0 && pxlCols > 0 {
pxlSize = utils.SizeForRowsAndCols(i, pxlRows, pxlCols)
} else if pxlRows > 0 {
pxlSize = utils.SizeForRows(i, pxlRows)
} else if pxlCols > 0 {
pxlSize = utils.SizeForCols(i, pxlCols)
}
if pxlAlias {
i = pixelate.AliasedPxl(i, pxlSize, triangle)
} else {
i = pixelate.Pxl(i, pxlSize, triangle)
}
utils.WriteStdout(i)
}
func runGreyscale(cmd *Command, args []string) {
i := utils.ReadStdin()
if greyscaleAverage {
i = greyscale.Average(i)
} else if greyscaleLightness {
i = greyscale.Lightness(i)
} else if greyscaleLuminosity {
i = greyscale.Luminosity(i)
} else if greyscaleMaximal {
i = greyscale.Maximal(i)
} else if greyscaleMinimal {
i = greyscale.Minimal(i)
} else if greyscaleRed {
i = greyscale.Red(i)
} else if greyscaleGreen {
i = greyscale.Green(i)
} else if greyscaleBlue {
i = greyscale.Blue(i)
} else {
i = greyscale.Photoshop(i)
}
utils.WriteStdout(i)
}
func runVxl(cmd *Command, args []string) {
i := utils.ReadStdin()
if vxlRows > 0 {
vxlHeight = utils.SizeForRows(i, vxlRows).H
}
i = pixelate.Vxl(i, vxlHeight, vxlFlip, vxlTop, vxlLeft, vxlRight)
utils.WriteStdout(i)
}
func runHxl(cmd *Command, args []string) {
i := utils.ReadStdin()
if hxlCols > 0 {
hxlWidth = utils.SizeForCols(i, hxlCols).W
}
i = pixelate.Hxl(i, hxlWidth)
utils.WriteStdout(i)
}
func runGamma(cmd *Command, args []string) {
i := utils.ReadStdin()
if gammaAuto {
i = gamma.Auto(i)
} else {
i = gamma.Adjust(i, gammaBy)
}
utils.WriteStdout(i)
}
func runSharpen(cmd *Command, args []string) {
i := utils.ReadStdin()
if sharpenUnsharp {
i = sharpen.UnsharpMask(i, sharpenRadius, sharpenSigma, sharpenAmount, sharpenThreshold)
} else {
i = sharpen.Sharpen(i, sharpenRadius, sharpenSigma)
}
utils.WriteStdout(i)
}
func runContrast(cmd *Command, args []string) {
i := utils.ReadStdin()
if contrastLinear {
i = contrast.Adjust(i, contrastRatio)
} else {
i = contrast.Sigmoidal(i, contrastRatio, contrastSigmoidal)
}
utils.WriteStdout(i)
}
func runTint(cmd *Command, args []string) {
i := utils.ReadStdin()
tintColor := color.NRGBA{
uint8(tintWith.R),
uint8(tintWith.G),
uint8(tintWith.B),
uint8(tintWith.A),
}
i = tint.Tint(i, tintColor)
utils.WriteStdout(i)
}
func runShuffle(cmd *Command, args []string) {
i := utils.ReadStdin()
if shuffleVertical && !shuffleHorizontal {
i = shuffle.Vertically(i)
} else if shuffleHorizontal && !shuffleVertical {
i = shuffle.Horizontally(i)
} else {
i = shuffle.Shuffle(i)
}
utils.WriteStdout(i)
}
func runPixelate(cmd *Command, args []string) {
i := utils.ReadStdin()
if pixelateRows > 0 && pixelateCols > 0 {
pixelateSize = utils.SizeForRowsAndCols(i, pixelateRows, pixelateCols)
} else if pixelateRows > 0 {
pixelateSize = utils.SizeForRows(i, pixelateRows)
} else if pixelateCols > 0 {
pixelateSize = utils.SizeForCols(i, pixelateCols)
}
i = pixelate.Pixelate(i, pixelateSize)
utils.WriteStdout(i)
}
func runChannel(cmd *Command, args []string) {
i := utils.ReadStdin()
var adj utils.Adjuster
if utils.FlagVisited("by", cmd.Flag) {
adj = utils.Adder(channelBy)
} else {
adj = utils.Multiplier(channelRatio)
}
if !(channelRed || channelGreen || channelBlue || channelHue ||
channelSaturation || channelLightness || channelBrightness || channelAlpha) {
channelRed = true
channelGreen = true
channelBlue = true
}
if channelRed {
i = channel.Red(i, adj)
}
if channelGreen {
i = channel.Green(i, adj)
}
if channelBlue {
i = channel.Blue(i, adj)
}
if channelHue {
i = channel.Hue(i, adj)
}
if channelSaturation {
i = channel.Saturation(i, adj)
}
if channelLightness {
i = channel.Lightness(i, adj)
}
if channelBrightness {
i = channel.Brightness(i, adj)
}
if channelAlpha {
i = channel.Alpha(i, adj)
}
utils.WriteStdout(i)
}
func runBlur(cmd *Command, args []string) {
if _, ok := styleNames[blurStyle]; !ok {
utils.Warn("--style must be one of 'clamp', 'ignore' or 'wrap'")
os.Exit(2)
}
style, _ := styleNames[blurStyle]
i := utils.ReadStdin()
if blurBox {
i = blur.Box(i, blurRadius, style)
} else {
i = blur.Gaussian(i, blurRadius, blurGaussian, style)
}
utils.WriteStdout(i)
}
func runLevels(cmd *Command, args []string) {
i := utils.ReadStdin()
if !levelsRed && !levelsGreen && !levelsBlue {
levelsRed = true
levelsGreen = true
levelsBlue = true
}
if levelsRed {
i = runLevelsOnChannel(cmd, args, i, levels.RedChannel)
}
if levelsGreen {
i = runLevelsOnChannel(cmd, args, i, levels.GreenChannel)
}
if levelsBlue {
i = runLevelsOnChannel(cmd, args, i, levels.BlueChannel)
}
utils.WriteStdout(i)
}
func runBlend(cmd *Command, args []string) {
if blendModes {
printModes()
}
a := utils.ReadStdin()
path := args[0]
file, _ := os.Open(path)
defer file.Close()
b, _, _ := image.Decode(file)
var f (func(a, b image.Image) image.Image)
b = blend.Fade(b, blendOpacity)
if blendFit {
ab := a.Bounds()
bb := b.Bounds()
// Need to work this out better, see
// http://www.codinghorror.com/blog/2007/07/better-image-resizing.html
if bb.Dx() < ab.Dx() || bb.Dy() < ab.Dy() {
// b is going to get BIGGER
b = resize.Resize(uint(ab.Dx()), uint(ab.Dy()), b, resize.Bilinear)
} else {
// b is going to get SMALLER
b = resize.Resize(uint(ab.Dx()), uint(ab.Dy()), b, resize.Bicubic)
}
}
if blendNormal {
f = blend.Normal
} else if blendDissolve {
f = blend.Dissolve
} else if blendDarken {
f = blend.Darken
} else if blendMultiply {
f = blend.Multiply
} else if blendBurn {
f = blend.Burn
} else if blendLinearBurn {
f = blend.LinearBurn
} else if blendDarker {
f = blend.Darker
} else if blendLighten {
f = blend.Lighten
} else if blendScreen {
f = blend.Screen
} else if blendDodge {
f = blend.Dodge
} else if blendLinearDodge {
f = blend.LinearDodge
} else if blendLighter {
f = blend.Lighter
} else if blendOverlay {
f = blend.Overlay
} else if blendSoftLight {
f = blend.SoftLight
} else if blendHardLight {
f = blend.HardLight
} else if blendVividLight {
f = blend.VividLight
} else if blendLinearLight {
f = blend.LinearLight
} else if blendPinLight {
f = blend.PinLight
} else if blendHardMix {
f = blend.HardMix
} else if blendDifference {
f = blend.Difference
} else if blendExclusion {
f = blend.Exclusion
} else if blendAddition {
f = blend.Addition
} else if blendSubtraction {
f = blend.Subtraction
} else if blendHue {
f = blend.Hue
} else if blendSaturation {
f = blend.Saturation
} else if blendColor {
f = blend.Color
} else if blendLuminosity {
f = blend.Luminosity
} else {
f = blend.Normal
}
utils.WriteStdout(f(a, b))
}