EMAIL:  baldwin@arlut.utexas.edu
NAME:  G. Jason Glover
****note:  I am in the process of moving and do not have an e-mail address right now.  
	The address above is a friend who is keeping an eye on things untill I get on-line.
TOPIC:  Time
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
RENDERER USED:  Povwin3.0 latest beta
TOOLS USED:  Paint Shop Pro 3.0, CorelDraw 4.0, Fractint
RENDER TIME:  10.5 hrs
HARDWARE USED:  486 DX2-66 with 8 meg ram
IMAGE DESCRIPTION:  According to Physists, space and time are so closely linked that they are
both referred to as "spacetime".  This image tries to show that relationship.

DESCRIPTION OF HOW THIS IMAGE WAS CREATED:

	
	This scene was a lot of trouble.  The most difficult part was rendering the earth.  
I took a very dark blue 8000 mile diameter sphere with bumps and some specular highlight and 
wrapped a bitmap of the earth's land around it.  I got the land from some corelDraw clip-art.
I also used a texture form coreldraw.  Then I covered it with 8002 mile diameter light blue
transparent sphere with diffuse 1 to give some hazyness to the land and water.  I then 
covered this with a transparent cloud texture borrowed from the clouds.inc file.  This 
allows the clouds to cast shadows on the earth's surface.  The whole thing was then covered by
a linear light blue dust halo to simulate an atmosphere.  
	The stars are just an image map created by using the starfield function from fractint.
I gave them a luminous texture so they are self illuminating and not affected by shadows.
I used paint shop pro to fine tune the starfild.  The stars that showed through the earth's halo
were distorted and gave a very ugly result.  Therefore I tried to drop a black halo behind
the earth to diminish the stars that showed through the earth's halo.  however, Povray can not
calculate two overlapping halos.  So I rendered the black halo on a white background which gave
me a black disk which fadded to white.  When used as an image map with filter all 1 added,
you get a black disk which fades to clear.  I dropped this image map (block.gif) behind
the earth to block out the stars that showed through the atmosphere.
	I started to render the scene and realized that povary can not calculate the earth's
halo when looking through the hourglass.  So I had to make two separate renderings.  The earth.pov
file is the rendering to create a tga file with the earth and stars.  This is then used as
a background image map in spcetim.pov.  The earth.tga is given a luminous texture that prevents
shadows from being cast on it.  It also keeps the stars lit up.  Each is a true renduring, but 
treating them sepeartely allows the atmosphere to show through the glass in the hourglass.
	Also to note, the earth, sun, and distance are all to scale which give accurate shadows.
I used the units as miles.  The stone textures are from the old stones.inc file and as usual, I
created all of the objects using CSG.  I was very pleased with the effect of the radiosity and 
used a background {Gray25} statement to simulate the ambient light comming in from stars and 
planets.  It is just enough ambient light to give good shadows.  I did no use anti-aliasing on 
earth.pov rendering because I used it on spcetim.pov.  Using it twice diminished my stars.
The image map used for the clock face was created using coreldraw and paint shop.  The sundial
is simply a black and white height fild created in coreldraw and paint shop.  When the image 
was finially completed, I used Paint Shop Pro to convert to a <250k JPEG.  If nothing else,
this image qualifies for the time category because it took so darn long to get right!

Jason