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Processing 2: Creative Programming Cookbook

Chapter 2. Drawing Text, Curves, and Shapes in 2D

In this chapter we will cover:

Drawing basic shapes
Working with colors
Working with images
Drawing text
Drawing curves
Calculating points on a curve
Drawing custom shapes
Manipulating SVG files
Offscreen drawing

Key benefits

Explore the Processing language with a broad range of practical recipes for computational art and graphics

Wide coverage of topics including interactive art, computer vision, visualization, drawing in 3D, and much more with Processing

Create interactive art installations and learn to export your artwork for print, screen, Internet, and mobile devices

Description

Processing is probably the best known creative coding environment that helps you bridge the gap between programming and art. It enables designers, artists, architects, students and many others to explore graphics programming and computational art in an easy way, thus helping you boost your creativity. "Processing 2: Creative Programming Cookbook" will guide you to explore and experience the open source Processing language and environment, helping you discover advanced features and exciting possibilities with this programming environment like never before. You'll learn the basics of 2D and 3D graphics programming, and then quickly move up to advanced topics such as audio and video visualization, computer vision, and much more with this comprehensive guide. Since its birth in 2001, Processing has grown a lot. What started out as a project by Ben Fry and Casey Reas has now become a widely used graphics programming language. Processing 2 has a lot of new and exciting features. This cookbook will guide you to explore the completely new and cool graphics engine and video library. Using the recipes in this cookbook, you will be able to build interactive art for desktop computers, Internet, and even Android devices! You don't even have to use a keyboard or mouse to interact with the art you make. The book's next-gen technologies will teach you how to design interactions with a webcam or a microphone! Isn't that amazing? "Processing 2: Creative Programming Cookbook" will guide you to explore the Processing language and environment using practical and useful recipes.

Who is this book for?

This book targets creative professionals, visual artists, designers, and students who have a starting knowledge of the Processing Development environment and who want to discover the next level of Processing. Anyone with a creative practice who wants to use computation in their design process. A basic understanding of programming is assumed. However, this book is also recommended to the non-artistic, looking to expand their graphics and artistic skills.

What you will learn

Draw expressive shapes and images in 2D and 3D and get inspiration for your creativity

Extend the possibilities with Processing using libraries that help you create interactive computational art

Play and control video files using some of the coolest recipes with unmatched techniques

Visualize music and even live audio

Build basic tools for audio visual performances

Interact with computers using a webcam

Create Processing sketches for the web using the new JavaScript mode

Create interactive applications for your Android devices

What do you get with Print?

Instant access to your digital eBook copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

Download this book in EPUB and PDF formats

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

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Mastering OpenCV with Practical Computer Vision Projects

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Processing 2: Creative Programming Cookbook

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Lon Dec 20, 2012

This is really a fantastic book. Each of the 90 or so recipes includes a description, sample code, and a walk-through of how it works. Many of the sketches are simpler than I would like but that simplicity also makes them easy to follow. Along with that, references are given for outside resources, which makes the examples a useful launching point. This is definitely a 5-star book for anyone learning processing and I'd give it 4 stars as a useful reference for those who are already fairly proficient.

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Luis Hernández Nov 18, 2014

Excellent!

Andrej May 02, 2014

Bei diesem Buch gibt es fast nichts zu meckern:ProFür einsteiger und leicht fortgeschritteneSuper verständlich erklärt.wenn man fragen (fragen heist fragen zum programmieren) hat antwortet die firma einen auch (Klasse)Kontra:Naja es ist ein buch und bei mir war es so das ich mir dieses buch gekauft habe damit ich weiß wie man videos in processing abspielen kann naja und bei einer neueren version in processing ging das nicht da eine datei geändert wurde. Daher musste ich 2 wochen auf eine lösung warten aber ich habe sie einfach bequem und kostenfrei bekommen einfach super.Bücher halten nun mal einen gewissen stand x fest. da processing öfters verändert wird kann man nicht ganz erwarten das alles reibunglos leuft.

M Pearson Dec 12, 2012

I loved the no-nonsense approach of this book.As more and more Processing books hit the market, each new book has to think carefully about its approach, attempting to provide something that isn't already out there. Vantomme's book has taken this into account, being aimed squarely at the more advanced/impatient Processing user. It implicitly acknowledges that there are already plenty of great beginners guides out there, and that the reader has probably already read a few of them, which allows this book to speed through the hand-holding stage and get onto the meatier topics.The cookbook approach, chunking the teaching into manageable recipes of no more than a few pages each, makes it very easy to dip in and out of. And this conciseness means it can cover a lot more topics, in much fewer pages. I don't think there are any other Processing books that cover 3D, Computer Vision, Audio Viz, Android development, and writing your own libraries quite as succinctly as this.Highly recommended.

RA Nov 30, 2012

At a GlanceJan Vantomme's Processing Cookbook bills itself as "Quick answers to common problems." In this regard, the author nicely succeeds in accomplishing that goal. The book is well organized, quite readable, and filled with many useful entry points for coders looking to jumpstart their projects. While it should not be the first book on Processing in your library (nor is it intended as such), it is a worthy addition for anyone wanting handy recipes that help serve up tasty procedural dishes.The AudienceThose who are new to both Processing and programming in general are probably advised to look elsewhere. However, it would be unfair to say that the book is beginner-hostile, as the first few chapters are a nice orientation in the Processing environment. Intermediate to advanced coders would probably have no difficulty using this as a suitable guide to getting started in the Processing language. Still, the main audience for this book is likely to be those who are already familiar with Processing, and can benefit from having a good set and a wide variety of starting points. This book would be at home in both the classroom and the individual bookshelf.The BookChapters progress gradually from beginning topics to more advanced ones. Each chapter follows a set structure and format which fosters a feeling of familiarity even for new topics. Readers move easily through a "Getting ready" section to the more detailed "How to do it..." section. Afterward, there is a review section "How it works...," and occasionally a "There's more..." or "See also" section for additional areas to explore. When encountering new material, it's nice to have these guideposts so the terrain never feels totally foreign.These are not in-depth tutorials. Like most recipe books, the idea is not to teach you how to cook, but to give you the ingredients and steps necessary to make something happen. You could choose to follow the instructions exactly, and get the same exact results, but the expectation is that you'll use these recipes to breeze through the tedium in order to focus on concocting your own special sauce.For my review, I used the digital version of the book. I installed a copy on my desktop setup (.pdf) and my iPad (eBook). While I generally prefer books in a physical format, programming and technical manuals can be unwieldy. With the digital version, I could easily switch between coding and reading on my desktop, and reading on the go with my tablet. In both environments, the layout is clear and legible, with the added benefit of being able to change document and content size as needed. The book design is easy on the eye, and avoids much of the ponderous density that plagues so many technical books.The CodeAll the code examples in the book are available for download. The book is written for Processing version 2.0, which as of this writing (late 2012) is still in beta. This means the examples are forward-looking, and should remain valid and useful for some time to come. The extra good news is that I tested the code in Processing 1.5.1, and found it to be mostly backward compatible as well. A very few sketches required slight modifications to run in the older version of Processing, but these tended to be obvious for the moderately experienced user. Exceptions to this were in the chapters on video, Android development, and writing libraries. For these, the user will need the more recent version of Processing.The code itself is generally easy to follow and nicely organized. Comments are minimal and unobtrusive, but present when you need them. There is nothing particularly flashy or clever -- the author seems much more interested in giving you a good set of workaday tools than showing off artsy syntax.The output as well is nothing fancy, just enough to make sure the sketch is working as intended, and not be completely without interest. Here again, there seems to be just the right balance in keeping you motivated while encouraging you to add your own creativity.CriticismsThere's not a lot to fault with this book. There are a few typos here and there, but these are not terribly distracting. Besides, there's a link in the preface for how and where to submit errata.Although the book generally flows nicely, the illustrations of the output come after the explanations. I found myself wanting to visually know ahead of time what the goal of a particular piece of code was. Of course, part of learning to program involves being able to look at code and visualize what is supposed to be happening, so in this regard the reader is being respected by not being spoon-fed.Sooner or later, everyone develops their own coding style and preference. I like variable names that are semantic even if they take longer to type and take up more space on the page. I have grown to dislike variable name choices that cause me to look around in other parts of the code to remind me what their meaning is supposed to be. In other words, the author's coding style is not an exact fit for my own, but of course there's nothing to keep me from editing any code I would use to conform to my own way of doing things.I also wish the downloaded code chapters were named as well as numbered, according to their chapter headings (sub-headings are, by the way). When needing to grab code quickly to start a new project, I'd rather not have dig randomly through the top level directory, or open the book just to find a pointer to what I already know I want. Again, I can easily rename these folders myself, but it would be nice not to have to.Am I being nit-picky? Yes, simply because the author and publisher left me no major targets to shoot at.ConclusionWhen I read a book on programming or any technical manual, I always have several questions in mind. Can I read it in a linear fashion? Can I easily find the part I need as a reference? Is the experience pleasurable, or at a minimum, painless? Is it well organized and non-intimidating to look at? Is the content useful? Am I learning something new, but still accessible? Does the author seem more interested in helping me than in showing off? Is this something I will want to pick up again and keep finding value?To all of these, I can answer "yes" for Processing 2: Creative Programming Cookbook. Much of the code will be helpful for current projects, and much of the rest served to help me know what to look forward to when I step up to Processing version 2.0. Several of the chapters covered areas that I have not yet spent much attention on... this book has definitely lowered the bar for entrance into these topics, while raising my enthusiasm the same time.Processing is a rapidly maturing technology, and we've arrived at the point where there are a number of good books on the subject. We are lucky to have the comprehensive reference books, the thorough-going text books, and the gorgeous gallery books. Now we also have a cookbook, exactly the sort of thing you want when you need more than the standard online reference, and less than the ponderous textbooks.Processing 2: Creative Programming Cookbook is not the only book on the subject you will want to own. But once you have it, I wouldn't be surprised if it's the one you wind up turning to first, and most often.

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