1. Vector & Raster Graphics in Processing
February 28 and March 1, 2017

2. There are 2 forms of graphical display devices and data structures
Raster graphics paint picture elements (pixels).
A raster display literally paints pixels. Most modern displays are raster.
Data structure is a 2D matrix of pixels, e.g., JPEG or PNG files.
In Processing a raster data structure type is PImage.
Vector graphics draw strokes (not pixels).
An oscilloscope or laser projector is a vector display. There are vector terminals.
Data structure is a mathematical description of strokes & optionally fill.
SVG (Silicon Vector Graphics) is a vector file format.
In Processing two vector data structure types are PShape and PFont.
When you render a vector description on a raster device, it becomes pixels.