Graphic Design

Graphs, charts, and maps often use color to help the user tell data points apart. For instance, a line graph comparing processor benchmarks might show the Motorola processor in red, the Intel processor in blue, the Sun processor in green, and so on. For small, fixed data sets (about 10

Question: It isn’t clear to me how to do ‘smart’ painting. For example, ifI want to paint only a portion of something, what should I do?There are paint/repaint methods that take arguments such as x,y, etc. Who orwhat calls these methods? Are they provided just as convenient placesfor overrides? Am