TITLE: 8 36
NAME: Matthew Milton
COUNTRY: UK
EMAIL: matthew_milton@hotmail.com
WEBPAGE: N/A
TOPIC: Absence
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: 836.jpg
RENDERER USED: 
    povray 3.6

TOOLS USED: 
    povray editor, wings

RENDER TIME: 
    41 hours 34 minutes 17 seconds

HARDWARE USED: 
    Pentium 2.8GHz (dual processor)


IMAGE DESCRIPTION: 

On the way home on a summers evening I looked up to check my watch against Big
Ben (I know it's the bell not the tower), but something wasn't quite right. 


DESCRIPTION OF HOW THIS IMAGE WAS CREATED: 

Wanted something with a recognisable outline in the clouds (the negative space
concept). The image was created with a mixture of wings and csg. I'd never used
wings before but it certainly speeded the creation of primitive objects on the
clocktower. Used various macros to duplicate the objects for instance the
following simple one to arrange the clockface elements.

#macro Clockface(Obj, innerRadius, number, offset)
    #local i=0;
    #local segment = 360/number;
    #while (i<number)
        object {Obj translate z*-innerRadius rotate offset rotate y*i*segment}
        #local i=i+1;
    #end
#end

All the detail is modelled, no image maps or anything used. The clouds are
isosurfaces of combined granite, bozo pigments added to a sphere then
subtracted functions for the missing bits of the tower. Lots of experimenting
to get the required effect with media (and long render times).

Finally I created another macro to place the pigeons in the scene at random
angles and random wing positions, the models are pretty basic but good enough
from the distance they are viewed.

Matt Milton.

