📚 mergi - Awesome Go Library for Images

Result	Terminal Code
	mergi -t TT -i https://raw.githubusercontent.com/ashleymcnamara/gophers/master/Facepalm_Gopher.png -r "131 131" -i https://raw.githubusercontent.com/ashleymcnamara/gophers/master/Facepalm_Picard_Gopher.png -r "131 131" -a "sprite 50"

:tada: Basic Overview

Image manipulation go library plus cross platform CLI tool.

⚡ Features

• 🛠 Merge
• ✂️ Crop
• 💣 Resize
• 🖃 Watermark
• 💖 Animate
• 🔥 Easing
• 🦎 Transition

🚀 Getting started

Install via go get

To install Mergi, use go get, or download the binary file from Releases page.

$ go get github.com/noelyahan/mergi

Usage:

 ╔╦╗╔═╗╦═╗╔═╗╦
 ║║║║╣ ╠╦╝║ ╦║
 ╩ ╩╚═╝╩╚═╚═╝╩
 let's go & make imaging fun
 http://mergi.io
 version 1.0.0

  -a string
    	Enter animation type=[sprite, slide] and the delay to get mergi gif animation ex: smooth 10
  -c value
    	Enter crop points and height and width ex: x y w h
  -f string
    	Enter true if you want to process the final output
  -i value
    	Enter images that want to merge ex: /path/img1 or url
  -o string
    	Enter image outputs file ex: out.png or out.jpg (default "out.png")
  -r value
    	Enter resize width and height of the output ex: 100 200
  -t string
    	Enter a merge template string ex: TBTBTB (default "T")
  -w value
    	Enter watermark image and points to place it, [-r w h] is optional  ex: /path/img -r w h x y

🛠 Merge

Image 1	Image 2	Result Image

Mergi Tool

Horizontal

mergi \
-t TT \
-i testdata/mergi_bg_1.png \
-i testdata/mergi_bg_2.png

Vertical

mergi \
-t TB \
-i testdata/mergi_bg_1.png \
-i testdata/mergi_bg_2.png

Mergi Library

image1, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_1.png"))
image2, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_2.png"))

horizontalImage, _ := mergi.Merge("TT", []image.Image{image1, image2})
mergi.Export(impexp.NewFileExporter(horizontalImage, "horizontal.png"))

verticalImage, _ := mergi.Merge("TB", []image.Image{image1, image2})
mergi.Export(impexp.NewFileExporter(verticalImage, "vertical.png"))

✂️ Crop

Image	Result Image

Mergi Tool

mergi \
-i testdata/mergi_bg_1.png \
-c "10 40 200 110"

Mergi Library

img, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_1.png"))
res, _ := mergi.Crop(img, image.Pt(10, 40), image.Pt(200, 110))
mergi.Export(impexp.NewFileExporter(res, "crop.png"))

💣 Resize

Image	Result Image

Mergi Tool

mergi \
-i testdata/mergi_bg_1.png \
-r "180 80"

Mergi Library

img, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_1.png"))
res, _ := mergi.Resize(img, uint(180), uint(80))
mergi.Export(impexp.NewFileExporter(res, "resize.png"))

🖃 Watermark

Image	Watermark Image	Result Image

Mergi Tool

mergi \
-i testdata/mergi_bg_1.png \
-w "testdata/mergi_logo_watermark_90x40.png 250 10"

Mergi Library

originalImage, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_1.png"))
watermarkImage, _ := mergi.Import(impexp.NewFileImporter("./testdata/glass-mergi_logo_watermark_90x40.jpg"))

res, _ := mergi.Watermark(watermarkImage, originalImage, image.Pt(250, 10))
mergi.Export(impexp.NewFileExporter(res, "watermark.png"))

💖 Animate

Image 1	Image 2	Result Animation

Mergi Tool

Sprite Animation

mergi \
-t "TT" \
-i testdata/mergi_bg_1.png \
-i testdata/mergi_bg_2.png \
-a "sprite 50"

Smooth Animation

mergi \
-t "TT" \
-i testdata/mergi_bg_1.png \
-i testdata/mergi_bg_2.png \
-a "smooth 5"

Mergi Library

image1, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_1.png"))
image2, _ := mergi.Import(impexp.NewFileImporter("./testdata/mergi_bg_2.png"))

gif, _ := mergi.Animate([]image.Image{image1, image2}, 50)
mergi.Export(impexp.NewAnimationExporter(gif, "out.gif"))

🔥 Easing

InBounce	InBack	InOutQuad	InSine
InCubic	InElastic	InOutExpo	Linear
InOutBounce	InCirc	InOutCubic	InOutQuart
InOutBack	InCubic	InOutCirc	InOutSine
InExpo	OutBounce	InQuint

Mergi Library

Note: Ease function can be applied with any function, in this example it's applied with Watermark function

// Load background and the square images
square, _ := mergi.Import(impexp.NewFileImporter("./testdata/square.jpg"))
bg, _ := mergi.Import(impexp.NewFileImporter("./testdata/white_bg.jpg"))

// Init images frames to add applied ease frames
frames := make([]image.Image, 0)

// Init the limts of the Ease
to := bg.Bounds().Max.X - square.Bounds().Max.X
posY := bg.Bounds().Max.Y/2 - square.Bounds().Max.Y/2
speed := 4

// Ease from 0 to width of background
for i := 0; i < to; i += speed {
  // Apply Easeing function InBounce
  posX := mergi.Ease(float64(i), 0, float64(to), mergi.InBounce)
  img, _ := mergi.Watermark(square, bg, image.Pt(int(posX), posY))
  frames = append(frames, img)
}

// For preview example, save as a gif
gif, _ := mergi.Animate(frames, 1)
mergi.Export(impexp.NewAnimationExporter(gif, "out.gif"))

🦎 Transition

SlideBar	Ink1	Ink2	Ink3
ScaleUpFastRect	ScaleDownFastRect	ScaleUpFastCircle	ScaleDownFastCircle

Learn more examples

💻 Contribute

• Clone the repository

$ go get github.com/noelyahan/mergi

• Run unit tests
• Fix bug
• Add new feature
• Push

🌠 Contributors

Noel 💻 📖 💬 👀 🤔 🎨

This project follows the all-contributors specification. Contributions of any kind are welcome!

🔵 License

This project is licensed under the MIT License - see the LICENSE.md file for details