{"rowid": 145, "title": "The Neverending (Background Image) Story", "contents": "Everyone likes candy for Christmas, and there\u2019s none better than eye candy. Well, that, and just more of the stuff. Today we\u2019re going to combine both of those good points and look at how to create a beautiful background image that goes on and on\u2026 forever!\n\nOf course, each background image is different, so instead of agonising over each and every pixel, I\u2019m going to concentrate on five key steps that you can apply to any of your own repeating background images. In this example, we\u2019ll look at the Miami Beach background image used on the new FOWA site, which I\u2019m afraid is about as un-festive as you can get.\n\n1. Choose your image wisely\n\nI find there are three main criteria when judging photos you\u2019re considering for repetition manipulation (or \u2018repetulation\u2019, as I like to say)\u2026\n\n\n\tsimplicity (beware of complex patterns)\n\tangle and perspective (watch out for shadows and obvious vanishing points)\n\tconsistent elements (for easy cloning)\n\n\nYou might want to check out this annotated version of the image, where I\u2019ve highlighted elements of the photo that led me to choose it as the right one.\n\nThe original image purchased from iStockPhoto.\n\nThe Photoshopped version used on the FOWA site.\n\n2. The power of horizontal lines\n\nWith the image chosen and your cursor poised for some Photoshop magic, the most useful thing you can do is drag out the edge pixels from one side of the image to create a kind of rough colour \u2018template\u2019 on which to work over. It doesn\u2019t matter which side you choose, although you might find it beneficial to use the one with the simplest spread of colour and complex elements.\n\nClick and hold on the marquee tool in the toolbar and select the \u2018single column marquee tool\u2019, which will span the full height of your document but will only be one pixel wide. Make the selection right at the edge of your document, press ctrl-c / cmd-c to copy the selection you made, create a new layer, and hit ctrl-v / cmd-v to paste the selection onto your new layer. using free transform (ctrl-t / cmd-t), drag out your selection so that it becomes as wide as your entire canvas. \n\nA one-pixel-wide selection stretched out to the entire width of the canvas.\n\n3. Cloning\n\nIt goes without saying that the trusty clone tool is one of the most important in the process of creating a seamlessly repeating background image, but I think it\u2019s important to be fairly loose with it. Always clone on to a new layer so that you\u2019ve got the freedom to move it around, but above all else, use the eraser tool to tweak your cloned areas: let that handle the precision stuff and you won\u2019t have to worry about getting your clones right first time.\n\nIn the example below, you can see how I overcame the problem of the far-left tree shadow being chopped off by cloning the shadow from the tree on its right. \n\nThe edge of the shadow is cut off and needs to be \u2018made\u2019 from a pre-existing element.\n\nThe successful clone completes the missing shadow.\n\nThe two elements are obviously very similar but it doesn\u2019t look like a clone because the majority of the shape is \u2018genuine\u2019 and only a small part is a duplicate. Also, after cloning I transformed the duplicate, erased parts of it, used gradients, and \u2014 ooh, did someone mention gradients?\n\n4. Never underestimate a gradient\n\nFor this image, I used gradients in a similar way to a brush: covering large parts of the canvas with a colour that faded out to a desired point, before erasing certain parts for accuracy.\n\nSeveral of the gradients and brushes that make up the \u2018customised\u2019 part of the image, visible when the main photograph layer is hidden.\n\nThe full composite.\n\nGradients are also a bit of an easy fix: you can use a gradient on one side of the image, flip it horizontally, and then use it again on the opposite side to make a more seamless join.\n\nSpeaking of which\u2026\n\n5. Sewing the seams\n\nNo matter what kind of magic Photoshop dust you sprinkle over your image, there will still always be the area where the two edges meet: that scary \u2018loop\u2019 point. Fret ye not, however, for there\u2019s help at hand in the form of a nice little cheat. Even though the loop point might still be apparent, we can help hide it by doing something to throw viewers off the scent.\n\nThe seam is usually easy to spot because it\u2019s a blank area with not much detail or colour variation, so in order to disguise it, go against the rule: put something across it!\n\nThis isn\u2019t quite as challenging as it may sound, because if we intentionally make our own \u2018object\u2019 to span the join, we can accurately measure the exact halfway point where we need to split it across the two sides of the image. This is exactly what I did with the FOWA background image: I made some clouds!\n\nA sky with no clouds in an unhappy one.\n\nA simple soft white brush creates a cloud-like formation in the sky.\n\nAfter taking the cloud\u2019s opacity down to 20%, I used free transform to highlight the boundaries of the layer. I then moved it over to the right, so that the middle of the layer perfectly aligned with the right side of the canvas.\n\nFinally, I duplicated the layer and did the same in reverse: dragging the layer over to the left and making sure that the middle of the duplicate layer perfectly aligned with the left side of the canvas.\n\nAnd there you have it! Boom! Ta-da! Et Voila! To see the repeating background image in action, visit futureofwebapps.com on a large widescreen monitor or see a simulation of the effect.\n\nThanks for reading, folks. Have a great Christmas!", "year": "2007", "author": "Elliot Jay Stocks", "author_slug": "elliotjaystocks", "published": "2007-12-03T00:00:00+00:00", "url": "https://24ways.org/2007/the-neverending-background-image-story/", "topic": "code"}
{"rowid": 147, "title": "Christmas Is In The AIR", "contents": "That\u2019s right, Christmas is coming up fast and there\u2019s plenty of things to do. Get the tree and lights up, get the turkey, buy presents and who know what else. And what about Santa? He\u2019s got a list. I\u2019m pretty sure he\u2019s checking it twice.\n\nSure, we could use an existing list making web site or even a desktop widget. But we\u2019re geeks! What\u2019s the fun in that? Let\u2019s build our own to-do list application and do it with Adobe AIR!\n\nWhat\u2019s Adobe AIR?\n\nAdobe AIR, formerly codenamed Apollo, is a runtime environment that runs on both Windows and OSX (with Linux support to follow). This runtime environment lets you build desktop applications using Adobe technologies like Flash and Flex. Oh, and HTML. That\u2019s right, you web standards lovin\u2019 maniac. You can build desktop applications that can run cross-platform using the trio of technologies, HTML, CSS and JavaScript.\n\nIf you\u2019ve tried developing with AIR before, you\u2019ll need to get re-familiarized with the latest beta release as many things have changed since the last one (such as the API and restrictions within the sandbox.)\n\nTo get started\n\nTo get started in building an AIR application, you\u2019ll need two basic things:\n\n\n\tThe AIR runtime. The runtime is needed to run any AIR-based application.\n\tThe SDK. The software development kit gives you all the pieces to test your application. Unzip the SDK into any folder you wish.\n\n\nYou\u2019ll also want to get your hands on the JavaScript API documentation which you\u2019ll no doubt find yourself getting into before too long. (You can download it, too.)\n\nAlso of interest, some development environments have support for AIR built right in. Aptana doesn\u2019t have support for beta 3 yet but I suspect it\u2019ll be available shortly.\n\nWithin the SDK, there are two main tools that we\u2019ll use: one to test the application (ADL) and another to build a distributable package of our application (ADT). I\u2019ll get into this some more when we get to that stage of development.\n\nBuilding our To-do list application\n\nThe first step to building an application within AIR is to create an XML file that defines our default application settings. I call mine application.xml, mostly because Aptana does that by default when creating a new AIR project. It makes sense though and I\u2019ve stuck with it. Included in the templates folder of the SDK is an example XML file that you can use.\n\nThe first key part to this after specifying things like the application ID, version, and filename, is to specify what the default content should be within the content tags. Enter in the name of the HTML file you wish to load. Within this HTML file will be our application.\n\n
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