May 2012
Intermediate to advanced
752 pages
20h 24m
English
Content preview from Core HTML5 Canvas: Graphics, Animation, and Game DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Images and Video
HTML5 Canvas provides extensive support for images. You can draw all or part of an image, scaled or unscaled, anywhere inside a canvas, and you can access and manipulate the color and transparency of each pixel. And by combining image manipulation with other aspects of the Canvas API such as clipping regions and offscreen canvases, you can create stunning effects, such as animations and multiplayer games, data visualization, or particle physics simulations.
Figure 4.1 shows a magnifying glass that demonstrates some of what’s possible with Canvas image manipulation. As you drag the magnifying glass, the application scales the pixels underneath the magnifying glass, and draws them back into the canvas, clipped to the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.