Cauliflower is nothing but cabbage with a college
education - Mark Twain

Concept 2.1 : Antialiasing - Introduction
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Idea:
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To your left you should see a simple red wireframe cube.  
If you had not noticed it before, it should be clear now, 
that in most of our OpenGL pictures that had lines, 
especially nearly horizontal or nearly vertical, the 
lines appeared jagged.  

These jaggedness is because the line is approximated 
by a series of pixels that must lie on the pixel grid.  
Removing this jaggedness is called antialiasing.

When performing antialiasing, OpenGL calculates a 
coverage value for each fragment based on the 
fraction pixel square on the screen that it would
cover.  In RGBA mode, OpenGL multiplies the 
fragments coverage value by its alpha value.  

The glHint() command
====================
Antialiasing costs speed!.  the glHint() command is used 
to exercise some control over the trade-off between 
image quality and speed.
glHint(GLenum target, GLenum hint)
controls certain aspects of OpenGL behavior.  The
target parameter indicates which behavior is to 
be controlled.  The hint parameter can be set to:

GL_FASTEST - to indicate the most efficient option
             be chosen
GL_NICEST - to indicate the highest quality option

GL_DONT_CARE - to indicate no preference.

Possible target values and their meanings are 
provided in the table below.

--------------------------------------------------------
Parameter			Meaning
--------------------------------------------------------

GL_POINT_SMOOTH_HINT		Specify the desired
GL_LINE_SMOOTH_HINT     	sampling quality of 
GL_POLYGON_SMOOTH_HINT		points, lines or 
				polygons during any
				antialiasing operations.


GL_FOG_HINT			Specifies whether fog
				calculaitons are done 
				per pixel (GL_NICEST)
				or per vertex (GL_FASTEST)

GL_PERSPECTIVE_CORRECTION_HINT  Specifies the desired 
				quality of color and 
				texture-coordinate
				interpolation
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