REAL RAY TRACER VERSION 2.0 JAN 3 1993
COPYRIGHT C. PROBERT
250 SPRINGDALE BLVD
TORONTO, ON
M4C1Z9
CANADA


THIS PROGRAM IS NOT TO BE SOLD FOR PROFIT

THIS PROGRAM IS SHAREWARE. IF YOU LIKE IT PLEASE SEND $5

CHANGES FROM PREVIOUS VERSION:
- faster
- more object types
- can enter exact coordinates
- can save configurations for producing page flipping animations



HOW TO USE MY PROGRAM (READ_ME.DOC)

ADD MENU

     The first screen you see shows a side view and top view of
an empty room with no walls, floor or ceiling. You will then 
proceed to add objects to the room positioning them in 3-D using
both the front and top view using the ADD menu.
     You can add a floor,ceiling and walls if you wish. The object
types which can be added are sphere,clyinder,hollow cylinder,cone
and cuboid.
     For each item added the colour can be selected by clicking
on the palette and the transparency/reflectivity adjusted by a 
slider. To make an object completely mirror-like it must have
colour black and maximum shiny. For complete transparency
use black and maximum c-thru.
     After all objects are added, up to 3 light sources can be
positioned.
     A floor can be tiled with the colour selected and black.     

DELETE MENU

     Any of the objects and lights already added can be deleted
from the scene.

EDIT MENU

     Any object in the scene can be edited for colour,reflectivity
and transparency by clicking/dragging the characteristic to be
changed.
     A different palette can be chosen - based on red,green or blue.

OPTIONS MENU

     The default is no ambient light which gives the most dramatic
pictures. Low or high ambient light can be added to the scene.
     Perspective can be deepened to give faster vanishing points.
     The viewpoint can be changed from straight-on to from an angle
above or/and an angle from either side.

START MENU
     GO starts creating the picture which may take several hours
to create. The more objects/lights/relective objects/ transparent
objects there are the longer it takes. The first process is a
sample of pixels to establish the exposure. After this the final
picture is made dot by dot. ESC will terminate the picture early.
Suggest you switch off the monitor and leave it running overnight

     XYZ allows you to change the x,y,z coordinates for each object 
and light in the picture. This is used when making composite objects
and you want the exact position, eg all in one vertical line.

     CEL allows you to save the picture configuration in a file and
identify any objects you might like to change when you load the file
later. This is useful for making page flipping animations where each
picture is a ray tracing but with objects slightly displaced. 
This allows you to 

     ANI allows you to load a configuration file previously saved
using CEL. You can change the position of the desired moving objects
to make a new picture for a page flipping animation.

FILE MENU

     You can VIEW the picture again, SAVE the picture as a DEGAS
PI1 file, or use NEW to erase the existing picture and create a
new scene. or QUIT to end the program.



