50 lines
1017 B
Go
50 lines
1017 B
Go
package main
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import (
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"image"
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"image/color"
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"math"
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)
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type imageSet interface {
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Set(x, y int, c color.Color)
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}
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func editImageInvert(img image.Image) image.Image {
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b := img.Bounds()
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imgSet := img.(imageSet)
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for y := b.Min.Y; y < b.Max.Y; y++ {
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for x := b.Min.X; x < b.Max.X; x++ {
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oldPixel := img.At(x, y)
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r, g, b, a := oldPixel.RGBA()
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r = 65535 - r
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g = 65535 - g
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b = 65535 - b
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pixel := color.RGBA{uint8(r), uint8(g), uint8(b), uint8(a)}
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imgSet.Set(x, y, pixel)
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}
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}
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return img
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}
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func editImageMonochrome(img image.Image) image.Image {
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b := img.Bounds()
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imgSet := img.(imageSet)
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for y := b.Min.Y; y < b.Max.Y; y++ {
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for x := b.Min.X; x < b.Max.X; x++ {
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oldPixel := img.At(x, y)
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r, g, b, a := oldPixel.RGBA()
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if r > math.MaxUint16/2 || g > math.MaxUint16/2 || b > math.MaxUint16/2 {
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r, g, b = 65535, 65535, 65535
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} else {
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r, g, b = 0, 0, 0
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}
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pixel := color.RGBA{uint8(r), uint8(g), uint8(b), uint8(a)}
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imgSet.Set(x, y, pixel)
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}
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}
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return img
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}
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