home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Virtual Reality Homebrewer's Handbook
/
vr.iso
/
claywork
/
format.txt
< prev
next >
Wrap
Text File
|
1996-03-19
|
2KB
|
60 lines
ClayWorks ShareWare '.3d' file format:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is a simple binary file format but please note: The floating point
values are Turbo Pascal real's. If this differs from your complier then
you may have to make a conversion to the numbers.
the first 3 words of the file are thus:
No_of_points (2 bytes)
No_of_joins (2 bytes)
No_of_Polygons (2 bytes)
The next block is the 'points' block which is an array of this record
Vector=
x,y,z:pascal real
end
with 'no of points' entries.
The second block is of this record
Join
from,to:word (2 bytes)
end
which is a reference to the points list with indexes starting from 0.
This has 'no of joins' entries.
The last block is the polygons list. The polygon structure is thus:
polygon=
number_of_sides:byte
point_references:array[0..3] of word (2 bytes each)
colour:byte
DoubleSided:boolean
end
At the moment 'number_of_sides' can not exceed a value of 4.
'point_references' refers to the point list in much the same way
as the joins do. Polygons are all closed, there will be changes to this
format.
This list has 'No_of_polygons' entries.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Future changes to this format are inevitable -I only give the format
away so that you can use the objects in your own programs.
This format will include a texture 'palette' to which references are made
by the polygons. The file will also include a Version header.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
For more info, mail me at:
csc023@cent1.lancs.ac.uk
(c) T.lewis 1995.