Supplying Normals for an Icosahedron Tutorial - OpenGL Tutorials in Delphi

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 Supplying Normals for an Icosahedron (example 2.5 and 2.6) 01 November 2003
Description :

  Here we draw the same 20 sided sphere, but now we add normals to it.

A normal, in short, defines the direction a specific polygon or vertex is pointing. It is used often when working with Lighting.

We also use GL_LIGHTING for the first time.
Do not worry about this for the moment, it will be explained in a later chapter.

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Chapter 1-2     Chapter 3-4    Chapter 5-7      Chapter 8-13