One of HTML5’s most tantalizing features is the Canvas element. Taking
the form of a simple rectangular area within the page (similar to a
div), Canvas allows you to draw sophisticated
rendering user interface widgets and other imagery within the Mac operating
system and by the Safari browser. Apple released its patents relating to
Canvas under the World Wide Web Consortium’s (W3C) royalty-free licensing
terms. This means that Apple provides royalty-free licensing for Canvas when
it appears within the context of W3C HTML recommendations.
This chapter covers the basics of Canvas and uses it to implement various practical applications. A fully exhaustive coverage of the tag is beyond the scope of this book, but if this chapter whets your appetite, you may wish to consider the following titles to increase your knowledge:
Canvas is a low-level, immediate mode application programming interface (API):
Canvas drawing instructions are executed the moment they are called; unlike SVG, Canvas has no intermediate ...