Re: How to create a light source?

[Julien563]

The principle of simulation follows the "ray tracing". 
Steps are:
 - Defining a two-dimensional matrix M1 which represents the background
visible for the observer without intermediaries masses;
 - Masses of deviant placed at a certain distance from the observer;
 - From the observer, it is all the matrix cells (x, y)
thereby define the angles in x and y;
- Passing at the mass level, the angles are changed;
- The radius derivative arrives at the plane of the matrix M1 to
coordinates (x2, y2);
- Are plotted at (x, y) of the M2 matrix that records what
which is actually reached by the radius of the pixel matrix M1 (x2, y2);

 and so on for all x, y coordinates of the starting template.

See here, for much informations :
http://www.epm6604b.be/lentille/lentille_theorie.html





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