RMagick 2.0.0: How to use RMagick
Basic concepts Let's look at the RMagick equivalent of "Hello, world". This program reads an image file named "Cheetah.jpg" and displays1 it on your monitor 1. require 'RMagick' 2. include Magick 3. 4. cat = ImageList.new("Cheetah.jpg") 5. cat.display 6. exit MS Windows users note: The display method does not work on native MS Windows. You must use an external viewer to view the images you create.
RMagickã§ãƒžã‚¹ã‚¯ã—ãŸéƒ¨åˆ†ã‚’白黒ã«ã™ã‚‹
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第27回　RMagickを用ã„ãŸç”»åƒå‡¦ç†ï¼šã‚¢ãƒ‹ãƒ¡GIF | gihyo.jp
ã¯ã˜ã‚ã« å‰å›žã¯RMagickを用ã„ã¦ç”»åƒã®ãƒªã‚µã‚¤ã‚ºã®ä»•æ–¹ã‚’紹介ã—ã¾ã—ãŸã€‚今回ã¯ã€RMagickã§ã®ã‚¢ãƒ‹ãƒ¡GIFã®å–り扱ã„ã«ã¤ã„ã¦èª¬æ˜Žã—ã¦ã„ãã¾ã™ã€‚ ãªãŠã€ç´¹ä»‹ã™ã‚‹ã™ã¹ã¦ã®ã‚µãƒ³ãƒ—ルコードã¯ã€äº‹å‰ã«ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã‚’実行ã—ã¦ã„ã‚‹å‰æã§è¨˜è¿°ã—ã¦ã„ã¾ã™ã€‚ã¾ãŸã€ç ´å£Šãƒ¡ã‚½ãƒƒãƒ‰ã¨éžç ´å£Šãƒ¡ã‚½ãƒƒãƒ‰ã®ä¸¡æ–¹ãŒã‚るメソッドã«ã¤ã„ã¦ã¯ã€ã‚µãƒ³ãƒ—ルコードã§ã¯ç‰¹æ®µã®ç†ç”±ãŒãªã„é™ã‚Šç ´å£Šãƒ¡ã‚½ãƒƒãƒ‰ã‚’利用ã—ã¦ã„ã¾ã™ã€‚ require 'rubygems' require 'rmagick' height = 160 width = 160 scale = 0.5 サンプル画åƒã¯ä»¥ä¸‹ã‚’用ã„ã¾ã™ã€‚ 図1　original.gif ※ã“ã®ç”»åƒã¯ã€Œãƒãƒ リクスリã€ã§é…布ã•ã‚Œã¦ã„ã‚‹ã‚‚ã®ã‚’使用ã•ã›ã¦ã„ãŸã ãã¾ã—ãŸã€‚ アニメGIFファイルã®èªã¿è¾¼ã¿ RMagickã§ã‚¢ãƒ‹ãƒ¡GIFファイルã®èªã¿è¾¼ã¿ã‚’è¡Œã†å ´åˆã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ã«ImageList.new
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Installing RMagick on OS X using MacPorts
Revised 16Nov2007 This page describes a method for installing RMagick, ImageMagick, and the delegate libraries used by ImageMagick. I developed this procedure using a clean install of OS X 10.5 (Leopard) on a PowerPC PowerBook G4, but the procedure should be the same for Tiger and Intel Macs. You will need to have your OS X installation disk, a connection to the Internet, and at least an hour of f
RMagickã®ä½¿ã„æ–¹ã®ãƒ¡ãƒ¢
RMagickã®ä½¿ã„æ–¹ã®ãƒ¡ãƒ¢ ライブラリã®ãƒãƒ¼ãƒ‰ require 'RMagick' ファイルã®èªã¿è¾¼ã¿ img = Magick::ImageList.new(path) ç”»åƒã®ã‚µã‚¤ã‚º img.columns #=> 横幅 img.rows #=> 高㕠画åƒã®ã‚µã‚¤ã‚ºã‚’変更ã™ã‚‹ width = 100 #横幅 height = 80 #高㕠image.resize(width, height) 縦横比を固定ã—ã¦ç”»åƒã®ã‚µã‚¤ã‚ºã‚’変更ã™ã‚‹ width = 100 height = (img.rows.to_f * width.to_f / img.columns.to_f).to_i img.resize(width, height) ç”»åƒã‚’ä¿å˜ã™ã‚‹ img.write('/path/to/file') ç”»åƒã‚’回転ã™ã‚‹ amount = 90 #角度(時計回り) new_img = img.
RMagick
Thumbnails are just the start! Check out the RMagick portfolio. The first page shows some basic transformations. Page 2 demonstrates special effects. Page 3 illustrates the drawing API. There are two versions of RMagick, RMagick 1 and RMagick 2. Most people will want to install RMagick 2. This version works with Ruby 1.8.2 and later (including Ruby 1.9) and ImageMagick 6.3.0 and later. All new enh
Render Great-looking Collages with Ruby and RMagick
Posted by Corban Brook Wed, 18 Oct 2006 19:46:32 GMT edit Yesterday I was glancing Douglas Bowman’s Photo gallery and a fun idea came to me. Inspired by using photo slides on a light table, Douglas employs a unified theme and feel across his gallery. Kindly he released the theme free for use and is available for download on his website. Douglas is an incredible graphic artist and prepares lovel
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ImageScience
Resizing Animated Gif's with RMagick
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