aspect_ratio

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Image aspect ratio calculation utility

aspect_ratio 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# aspect_ratio

[![License MIT](https://img.shields.io/badge/license-MIT-brightgreen.svg)](https://github.com/envato/aspect_ratio/blob/main/LICENSE)
[![Gem Version](https://img.shields.io/gem/v/aspect_ratio.svg?maxAge=2592000)](https://rubygems.org/gems/aspect_ratio)
[![Gem Downloads](https://img.shields.io/gem/dt/aspect_ratio.svg?maxAge=2592000)](https://rubygems.org/gems/aspect_ratio)
[![Build Status](https://github.com/envato/aspect_ratio/workflows/tests/badge.svg?branch=main)](https://github.com/envato/aspect_ratio/actions?query=branch%3Amain+workflow%3Atests)

Image aspect ratio utilities.

The Ruby port of [node-aspectratio](https://www.npmjs.com/package/aspectratio) npm module.

## Install

Install globally

```
gem install aspect_ratio
```

OR

Install locally with Bundler

Please include

```
gem 'aspect_ratio'
```

in your `Gemfile` then `bundle install`

## Test

```
ruby test/aspect_ratio_test.rb
```

## API

### crop(**integer** `width`, **integer** `height`, **string** `ratio`)

Apply a fixed aspect `ratio` crop without distoring the image aspect ratio.

* **integer** `width` - original image width
* **integer** `height` - original image height
* **string** `ratio` - new image ratio

> The `ratio` must be on the following format: `x`:`y` where `x` and `y` are
> integers. The order of `x` and `z` does not matter and `3:4` will be treated
> as `4:3`.

> By default #crop() will match the orientation of the original image unless a
> forced orientation is given on the follwing format: `x`:`y`!`z` where `z` is
> the orientation (`v` for vertical, or `h` for horizontal).

#### Return

This will return an `Array` of four values:

1. **integer** `x` - top lef x coordinate
2. **integer** `y` - top lef y coordinate
3. **integer** `width` - new image width
4. **integer** `height` - new image height

#### Example

```ruby
require 'aspect_ratio'
AspectRatio.crop(2048, 768, '4:3');
// [512, 768, 1024, 768]
```

![Crop with fixed ratio](https://raw.githubusercontent.com/envato/aspect_ratio/main/aspect.png)

### resize(**integer** `x`, **integer** `y`, **integer** `maxX`, **integer** `maxY`, **boolean** `enlarge`)

Get resized height and width of an image while perserving the aspect ratio of
the image.

* **integer** `x` - original image width
* **integer** `y` - original image height
* **integer** `maxX` - max image width
* **integer** `maxY` - max image height
* **boolean** `enlarge` - enlarge when original is smaller than the max - default true

### Return

Returns an `Array` of the resized `x` and `y` values:

* **integer** `x` - resized image width
* **integer** `y` - resized image height

#### Example

```ruby
require 'aspect_ratio'
AspectRatio.resize(2048, 768, 640, 640);
// [640, 240]
```

## [MIT License](./LICENSE)

aspect_ratio

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