By Casey Reas, Ben Fry, Lauren McCarthy
With p5.js, you could think about your whole internet browser as your canvas for sketching with code!
Learn programming the joys way--by sketching with interactive special effects! Getting begun with p5.js includes ideas that may be utilized to making video games, animations, and interfaces. p5.js is a brand new interpretation of Processing written in JavaScript that makes it effortless to engage with HTML5 gadgets, together with textual content, enter, video, webcam, and sound. Like its older sibling Processing, p5.js makes coding obtainable for artists, designers, educators, and beginners.
Written via the lead p5.js developer and the founders of Processing, this ebook presents an creation to the inventive probabilities of today's internet, utilizing JavaScript and HTML.
With Getting all started with p5.js, you'll:
• speedy research programming fundamentals, from variables to objects
• comprehend the basics of machine graphics
• Create interactive images with easy-to-follow projects
• discover ways to observe info visualization techniques
• seize and control webcam audio and video feeds within the browser
Read Online or Download Getting Started with P5.Js: Making Interactive Graphics in JavaScript and Processing PDF
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Additional resources for Getting Started with P5.Js: Making Interactive Graphics in JavaScript and Processing
Example text
With Firefox, from the top menu select Tools→Web Developer→Web Console. • Using Safari, you’ll need to enable the functionality before you can use it. ” Once you’ve done this, you’ll be able to select Develop→Show Error Console. • In Internet Explorer, open the F12 Developer Tools, then select the Console tool. You should now see a box appear at the bottom or side of your screen (Figure 2-1). If there is a typo or other error in your program, you may see some red text explaining what the error is.
The Reference programs are much shorter (usually four or five lines) and easier to follow than the examples on the Learn page. Note that these examples often omit setup() and draw() for simplicity, but the lines you see there are intended to be put inside one of these blocks in order to run. We recommend keeping the Reference open while you’re reading this book and while you’re programming. It can be navigated by topic or by using the search bar at the top of the page. The Reference was written with the beginner in mind; we hope that we’ve made it clear and understandable.
Run the code to reveal the colors: function setup() { createCanvas(480, 120); noStroke(); } function draw() { background(0, 26, 51); fill(255, 0, 0); ellipse(132, 82, 200, 200); fill(0, 255, 0); ellipse(228, -16, 200, 200); fill(0, 0, 255); ellipse(268, 118, 200, 200); } // // // // // // // Dark blue color Red color Red circle Green color Green circle Blue color Blue circle The colors in the example are referred to as RGB color, which is how computers define colors on the screen. The three numbers stand for the values of red, green, and blue, and they range from 0 to 255 the way that the gray values do.
