EMAIL: karl@pemail.net
NAME: Karl Manning
TOPIC:Great Engineering Achievements
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
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
TITLE: Stephenson's Rocket
COUNTRY: England
WEBPAGE: http://www.yi.com/home/ManningKarl/index.htm
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 20% uniform 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 2% noise.
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