TITLE: 25-02 NAME: DUVERGER Patrick COUNTRY: France EMAIL: patrick.duverger@sophia.cnet.fr WEBPAGE: http://www.rez-gif.supelec.fr/home_pages/kfra/home.html TOPIC: Physics & Math COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT. JPGFILE: 25-02.jpg ZIPFILE: 25-02.zip RENDERER USED: POVRAY 3 TOOLS USED: none RENDER TIME: 3h 17 mn 47 s HARDWARE USED: Pentium 120 IMAGE DESCRIPTION: The idea of the scene comes from a picture made by Escher which is called 'another word'. 1st topic : Gravity. There are three different axis of gravity in the same scene. 2nd topic : Hilbert curve. There is an Hilbert curve which is hung between the two colums. This curve is interesting because it is a curve which fills a surface. And its particularity comes from an amazing property : if you draw a vertical line exactly in the middle of the Hilbert curve, your line will cut only one segment of the curve; if you make the same with an horizontal line in the middle of the curve, your line will cut two segments of the Hilbert curve; if you draw a vertical line at the 1/4 or at the 3/4 of the curve, your line will cut three segments; and so on ... 3rd topic : the node situated at the left of the man. 4th topic : the moebius which has only one side. DESCRIPTION OF HOW THIS IMAGE WAS CREATED: The Hilbert curve was generated by a genetical algorithm within the pov script. The biggest problem encountered was to avoid the usage of arrays which are not available in POV 3, that's why I used the include mecanism. For each new day of generation of the fractal, I need a new included file, that's why there are as many files as the depth of the curve. All this technic is available in the POV script situated in the Zip package. No additional tool was used.