Drawing basics
The screens of modern computers consist of a number of small squares, called pixels (picture elements). Each pixel can light in one color. You create pictures on the screen by changing the colors of the pixels.
Note
Graphics based on pixels is called raster graphics. Another kind of graphics is vector graphics, which is based on primitives such as lines and circles. Today, most computer screens are arrays of pixels and represent raster graphics. But images based on vector graphics (vector images) are still used in computer graphics (for details, see the Images basics section in Chapter 4, Images and Textures). Vector images are drawn on raster screens using the rasterization procedure.
The openFrameworks project can draw on the whole screen (when it is in fullscreen mode) or only in a window (when fullscreen mode is disabled). See how to set screen modes in the main.cpp and setup() sections in Chapter 1, openFrameworks Basics. For simplicity, we will call the area where openFrameworks...
