TITLE: Stephenson's Rocket
NAME: Karl Manning
COUNTRY: England
EMAIL: karl@pemail.net
WEBPAGE: http://www.yi.com/home/ManningKarl/index.htm
TOPIC: Great Engineering Achievements
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: rocket.jpg
RENDERER USED: 
    POVRAY 3.02 for Windows95

TOOLS USED: 


PaintShop Pro v4.12 to create gifs for hills
Trees.inc v3.0 By Sonya Roberts


RENDER TIME: 
    47mins 34secs

HARDWARE USED: 
    Pentium 133 64Mb memory

IMAGE DESCRIPTION: 


In 1829, George Stephenson competed in, and won, the Rainhill Trails to provide
the first passenger steam locomotive service. Of the other 2 entrants, the
first blew up, and the other buckled the track because of its weight !
Stephenson's Rocket completed the course and saw service for several years with
a top speed of 25mph.


DESCRIPTION OF HOW THIS IMAGE WAS CREATED: 


The whole image was created from various (low res) pictures of models of the
Rocket or paintings of it. However all of these pictures were different ! The
image shown here is a composite of the most common features and colourings

Rocket:

Main body / trailer wood. To get a painted effect, I used a wood pattern as a
normal, and scaled it in the x direction to give a longer grain.

The wheels were done using various unions/differences. 

The water barrel had a "plank" created by differencing a large cylinder with a
box. This was then rotated in a while loop. The wooden texture on it was
rotated by a different amount in the opposite direction. This was to make each
plank look more like a separate plank, instead of applying the texture to the
whole object which made it look like the barrel was carved from a single lump
of wood.


Background:
Trees and bushes were created using Trees.inc from Sonya Roberts.
The "grassy" effect on the hills was done by adding 200niform noise to the gif
file in PaintShop Pro. This was then used as a height_field without smoothing.
The stones under the track were done in a similar way, but using 2oise.
Sky - Y gradient, LightBlue to NavyBlue, with some bozo'd clouds.

There is a single overhead "sun" light, with another white shadowless light near
the camera to provide a brighter sunny day type of lighting.


Karl Manning
karl@pemail.net
7/2/98