January 2004
Intermediate to advanced
464 pages
9h 59m
English
Content preview from C++ GUI Programming with Qt 3Become 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 8. 2D and 3D Graphics
In this chapter, we will explore Qt’s graphics capabilities. The cornerstone of Qt’s 2D drawing engine is QPainter, which can be used to draw on a widget on the screen, on an off-screen pixmap, or on a physical printer. Qt also includes a QCanvas class that provides a higher-level way of doing graphics, using an item-based approach that can efficiently handle thousands and thousands of items of various shapes. Many predefined items are provided, and it is easy to create custom canvas items.
An alternative to QPainter and QCanvas is to use the OpenGL library. OpenGL is a standard library for drawing 3D graphics, but it can also be used for drawing ...
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