Article Stats				Skill Level 5 Expert - 10 5 Beginner - 1
Author:	Corey Nakamura
Date:	6/1/2007
Category:	Algorithms
User Ratings: Total Ratings: 0	Innovative Complete Helpful	0/10 0/10 0/10

My project dealt with calculating mathematical equations and graphing them onto 
the screen.  GDI methods, such as LineTo and SetPixel use pixel coordinates for 
the drawing.  I needed a way to easily convert between the pixel and Cartesian 
coordinate systems.

Windows API provides different mapping modes and one of them allows you to set 
your own style.  The width, height, and the origin of the window’s units may be 
specified.  However, the scaling is limited to integers, and graphs usually 
require decimals with many digits of precision.