Sounds interesting. Could you perhaps make this movie available to the group or at least email me a copy?
Thanks in advance. Regards, Doyle ___________________________________________________ At 04:20 AM 6/17/98 , Daniel Roth wrote: > >> There are free raytracing packages available that allow you to >> describe a 3-dimensional object and render an image of it with >> light sources placed at will. Has anybody used these to simulate >> sundials? Seems like it should work. > >Yes, I tried it with POVRAY. I defined a stone and a long cylinder as the >shadow caster in this ray tracing software. The necessary POV-files were >generated by a program calculating suns azimuth and elevation to put the >light source in the correct direction. The small movie I generated shows >the figure 8 line "painted" by the shadow through one year for the same >mean time each day. I think this is of great educational interest but so >far I had no time to make more movies (including the numbers, lines and so >on on a sundial). > >- Daniel Roth > |___/._____/______________________|\________________________________\ | //\. / Doyle J. Groves | \ "Computers are useless. They \ | // \. / [EMAIL PROTECTED] ||\\ can only give you answers." \ |//____\. / || \\ _ _ \ | 317.509.9308 / 317.877.0278 fax ||__\\ --Pablo Picasso o.o \ |_________._____/_________________|_____\_________________________o______\
