September 2002
Intermediate to advanced
1272 pages
31h 12m
English
Content preview from Cocoa® Programming
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Drawing Points and Rectangles
Cocoa does not provide any methods, objects, or functions specifically intended for drawing points. Cocoa provides the NSPoint structure, yet there is no means of rendering an NSPoint onscreen. The reason has to do with the graphics model employed by Cocoa and Quartz. Apple describes the graphics model as being the same model as PDF and PostScript. This implies that all drawing should be considered to be both device and resolution independent. As a result, drawing a point is meaningless. In this graphics model, the term point is used to refer to a very precise, infinitely small point in the mathematical sense. If such a point was marked with ink, it still wouldn’t be seen because it is infinitely small.
When drawing ...
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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.