ABU 7-aug-2007 v 1.0 (obsolete)

ABU 9-aug-2007 v 1.1

- Updated links and screenshots.
- Coherent look&feel on various platforms ; Tested on WinXp, MacOs, Linux

ABU 19-feb-2012 v 1.2

- Fixed error in setLightVector - Now vector is normalized
- Changed formula for Specular Light:

Now a pure "Phong model is used" Previously the half-vector was used (as approximation of Reflection-Vector); Now a real Reflection Vector is used.

Based on work of G.Sookahet Simple raytracing, here is a more interactive program.

Shading now uses the "Blinn-Phong Shading Model" for handling specular reflection, too.

Note that the geometrical model has been simplified (this implies faster processing-time).

- The sphere is centered in {0,0,0}, with radius 1.
- The viewer and the light-source are at infinity (i.e. all light-rays and view-rays have a constant direction)

**Screenshots**

- MacOS

- WinXP

Download at https://sourceforge.net/projects/irrational-numbers/files/RayLab-1.2.zip/download

*DKF: Neat!*