Basic-Image-Processing-with-GO/geometry.go at master · NaufalF121/Basic-Image-Processing-with-GO · GitHub

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package main

import (
	"image"
	"image/color"
	"image/png"
	"os"
)

func translasi() {
	file, err := os.Open("./Input/image2.png")
	if err != nil {
		panic(err.Error())
	}
	defer file.Close()

	img, err := png.Decode(file)
	if err != nil {
		panic(err.Error())
	}
	bounds := img.Bounds()
	width, height := bounds.Max.X, bounds.Max.Y
	shift := 100
	Image := image.NewRGBA64(image.Rect(0, 0, width, height))
	for x := 0; x < width; x++ {
		for y := 0; y < height; y++ {
			r, g, b, a := img.At(x, y).RGBA()
			Image.Set(x+shift, y, color.RGBA64{R: uint16(r), G: uint16(g), B: uint16(b), A: uint16(a)})
		}
	}
	outFile, err := os.Create("./Output/output.png")
	if err != nil {
		panic(err.Error())
	}
	defer outFile.Close()
	err = png.Encode(outFile, Image)
	if err != nil {
		panic(err.Error())
	}
}

func rotation() {
	file, err := os.Open("./Input/image.png")
	if err != nil {
		panic(err.Error())
	}
	defer file.Close()

	img, err := png.Decode(file)
	if err != nil {
		panic(err.Error())
	}
	bounds := img.Bounds()
	width, height := bounds.Max.X, bounds.Max.Y
	Image := image.NewRGBA64(image.Rect(0, 0, width, height))
	for x := 0; x < width; x++ {
		for y := 0; y < height; y++ {
			r, g, b, a := img.At(x, y).RGBA()
			Image.Set((width - x - 1), (height - y - 1), color.RGBA64{R: uint16(r), G: uint16(g), B: uint16(b), A: uint16(a)})
		}
	}
	outFile, err := os.Create("./Output/output.png")
	if err != nil {
		panic(err.Error())
	}
	defer outFile.Close()
	err = png.Encode(outFile, Image)
	if err != nil {
		panic(err.Error())
	}
}

func zoom_out() {
	file, err := os.Open("./Input/image.png")
	if err != nil {
		panic(err.Error())
	}
	defer file.Close()

	img, err := png.Decode(file)
	if err != nil {
		panic(err.Error())
	}
	bounds := img.Bounds()
	width, height := bounds.Max.X, bounds.Max.Y
	Image := image.NewRGBA64(image.Rect(0, 0, width/2, height/2))
	for x := 0; x < width; x += 2 {
		for y := 0; y < height; y += 2 {
			r, g, b, a := img.At(x, y).RGBA()
			Image.Set(x/2, y/2, color.RGBA64{R: uint16(r), G: uint16(g), B: uint16(b), A: uint16(a)})
		}
	}
	outFile, err := os.Create("./Output/output.png")
	if err != nil {
		panic(err.Error())
	}
	defer outFile.Close()
	err = png.Encode(outFile, Image)
	if err != nil {
		panic(err.Error())
	}
}
func flipping() {
	file, err := os.Open("./Input/image.png")
	if err != nil {
		panic(err.Error())
	}
	defer file.Close()

	img, err := png.Decode(file)
	if err != nil {
		panic(err.Error())
	}
	bounds := img.Bounds()
	width, height := bounds.Max.X, bounds.Max.Y
	Image := image.NewRGBA64(image.Rect(0, 0, width, height))
	for x := 0; x < width; x++ {
		for y := 0; y < height; y++ {
			r, g, b, a := img.At(x, y).RGBA()
			Image.Set(x, (height - y - 1), color.RGBA64{R: uint16(r), G: uint16(g), B: uint16(b), A: uint16(a)})
		}
	}
	outFile, err := os.Create("./Output/output.png")
	if err != nil {
		panic(err.Error())
	}
	defer outFile.Close()
	err = png.Encode(outFile, Image)
	if err != nil {
		panic(err.Error())
	}
}