home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Graphics Plus
/
Graphics Plus.iso
/
msdos
/
raytrace
/
pov
/
gen
/
form04a
/
docs
/
whatsnew.txt
< prev
Wrap
Text File
|
1994-03-11
|
11KB
|
327 lines
This file has 3 sections:
Whatsnew text description of whats new
Future where I intend to go
History my comments as I worked on form
========================================================================
WHATSNEW
========
New options
4.00
-mutate
displays some mutations in a grid.
-mutate=3
mutation factor to use to start with.
-layout=2 to 5
number of mutations to display at a time (4 to 25)
-VGA16
uses 16 colour VGA modes 640x480 and 800x600. Useful if you don't
have enough VIDEO memory, or only a laptop.
the -spin flag automatically sets the screen pause off.
3.00a
New option -gif87 use gif87 format for saving as gif.
Version 4.00
------------
I have added mutations! Try them. They're not exactly complete
but they are interesting. I'm open to suggestions. See the
mutations.doc for more information. WARNING: don't mutate anything
with a screen_scale factor.
I have fixed a terrible bug, stacks of ellipses didn't work in POV
correctly! Thanks go to the two people who reported this to me.
Version 3.00
------------
APOLOGY
I apologise to all of you who've been waiting for this release,
and expecting it to do much more. I've been trying to do DXF
format output and getting nowhere fast (or should that be
slowly). I couldn't even begin to tell you how hard it is to get
any sensible free documentation of INSERTS and POLYLINES!
Offers anyone?
GENERAL
memory fragmentation has been improved, you should be able to
save a GIF under tighter memory limitiations now.
LEGAL.DOC, I don't know if this is needed, but you never know.
THE LANGUAGE
there have been some minor additions to the language
CONES There is now a cone primitive. specifiy base width, height.
SPACERS There is a new invisible object called "spacer", you give
it a size and it acts as if it were there, but nothing is
ever output.
BRACKETS. You can often use brackets to "bind" transforms to their
respective objects. Don't expect too much as this I've not
really tested this yet. Tell me if it's not working as you
expected tho'.
SCALE The version you get may implement SCALE in a different
way. Sorry, but the old way was not simple enough.
COPYRIGHT A line can now contain the copyright keyword. This line
will be displayed on the screen.
SCREEN OPTIONS
The screen display is now of higher quality.
-dos, -ems, -xms, -disk
It is now possible to use disk space for the ZBUFFER. so you
don't need any extended memory.(-disk)
I have implemented a simple conventional memory file cache which
has helps but it's still pretty slow, you may want to load an
external cache as well.
WARNING: no disk space checking is performed!!!! (smacked wrists :-)
-skeleton_preview
-skel Display a preview of the skeleton. This is pre alpha as yet.
-aspSave[-|+filename|=filename]
saves final zbuffer to filename (default "temp.asp"). Format of
the file is: int x, int y, followed by x*y integers of depth. Depth
goes from -30000 to +30000. This option was created for playing
with an autostereo program (aka SIRDS). Tell me if you can find
a use for this sort of data.
-save
Now saves the FORM script away as a GIF comment. This will thus
preserve any copyright message, and is in keeping with my policy
of stashing the script away wherever possible.
-res=WidthxHeight
Selects the next biggest screen mode.
if you need it you need it!
I use it for 160x120 MPEG animations
-update_ini
if you use this flag any command line options after it will
be written back to your sstools.ini file.
WARNING this has not been well tested so use with caution
POV options
-bounding_boxes-
You can now turn off bounding boxes to let pov do it's own thing.
POV is usually more efficient a bounding boxes than FORM.
-bound_torus
You can individually turn bounding boxes around toroids on or
off. I don't know if POV adds bounding boxes around toroids, so I put
this in.
-pov_declare_all_prims
To simplify changing the primitives after outputting to POV there
is now an option to declare each unique primitive at the top of the
form file.
VIVID output (for John Beale)
This is Primitive but functional. Two options,
Option 1 outputs unnested data much like POV, generates HUGE
files (especially if you use toroids or ellipses).
CAN have simple textures if you output like this.
Option 2 outputs nested data. Data is held in (almost
randomly) numbered .vo, and included in the original
temp.v file. VIVID (or at least the version I'm
using) then expands these to a HUGE (again) XYZZY.v
file. You'll have to maintain a separate directory
for each vivid output generated I'm afraid.
CAN'T have textures in this mode!
===========================================================================
FUTURE
------
(in no particular order, except the first two)
Bug fixing, I need to add brackets (these might or might not work)
I need to improve error checking
MUTATIONS - for an explanation see TODD & LATHAM, this is a
priority option!
Improved xms Zbuffer caching (not gonna do this, EMS is good enough)
add ems Zbuffer caching (done)
add disk Zbuffer caching (done)
add memory screen images for those that don't have SVGA cards
(and for text only machines to run overnight)
Perspective. (well why not!)
A graphical interface, very much vapourware at the moment.
different language syntax - I'm not happy with the current
language implementation, if anyone has any ideas
for a better syntax let me know.
Portability to gnu cc compiler (for the hell of it)
Portability to other platforms (will happen after gnu cc port)
more output formats. (some other raytracers, polyray etc.)
Textures I am particulary open to suggestions regarding implementing
textures in POV.
If I can do textures I may add truecolour facilities.
possible new forms ribcage, fern?, and tree?
DXF output, I''m looking into this, and this is the reason this
release doesn't apear to have much in it!
===========================================================================
HISTORY
-------
Known Problems : seems to lock up if saving gif to another directory
skeleton preview is the pits! (and that's being polite)
Untested : Backets
cones in VIVID
Lightly tested : SCALE
14/2/94
What am I doing here on valentines day when my girl is at home!
fixed inumerable memory overrun bugs.
11/2/94
added heap checking, loadsd of overruns detected and memory
leaks galore. AT least I can now track the little bug***s down.
Mutations: Wow! I've seen a mutation with my own two eyes!
The prototype at least proves the idea works.
7/2/94
split the tokeniser from the parser, looking good,
mutations look feasible at this stage!
aspect ratio on the GIFS now set to 0 , XTG v3.0 didn't like an
aspect of 1!
added gif87 flag, doesn't save gif comments.
3/2/94
Defaults are now setup internally in a centralised location, allowing
me to document them.
1/2/94
fixed stupid bug when selecting screen mode, the higher the res the worse
the mode selected! Glad I didn't release this last night!
Scale now seems to work at last. Phew!
26/1/94
tidying up for release
sstools environment variable added
really does look for sstools.ini on your path
looks for sstools.ini in the same dir as form.exe
10/1/94
fixed boxes failing in display=2 mode
display=1 mode is back, th'o not complete
7/1/94
added disk cache and disk zbuffer
added -xms and -disk flags
added cache_lines variable
4/1/94
added -skeleton flag, does a bare bones preview.
input is now saved as a gif comment.
gif is now 89a to allow comments
20/12/93
added -res=WidthxHeight, approx 5% slowdown required to allow this!
looks OK otherwise
-update_ini to update the FORM section with command line parameters
note: only updates options specified
13/12/93
Cones in POV are now correct
No longer testing POV V1.0 support
a new flag -pov_declare_all_prims outputs declares even for primitives
pov output is SLIGHTLY less eager to put object { } around primitives
bugs fixed
10/12/93
most command line aguments are case insensitive
(like they always should have been)
cones added for screen output (still need improving)
-aspsave to save zbuffer to .asp file for later autostereo display
9/12/93
Tried vivid texturing, seems to work ok. It was a very simple test tho'
cached data for polygonal representation of primitives now freed after
use. BIG improvement in memory fragmentation!
8/12/93
savebackgroundaswhite now works for GIF as well!
VIVID output now has textures and two options (nested and unnested)
2/12/93
added vivid output, triangular patches and all
this should have laid some groundwork for dxf output
also noticed, if you do sphere, ellipse; end; then
they are slightly different shades! The sphere is brighter!
30/11/93
integer rendering speed improved a bit, now only about 5% slower,
I think it's worth it for the quality improvement.
29/11/93
integer rendering improved at last, I just can't seem to improve
it any more! I'm shelving it for a while, since it's a lot better
than it was. GIT.FRM still screws up at res2 tho.
24/11/93
bounding_boxes flag added
bound_torus flag added
profile error messages actually give the profile flag and value now!
prototype brackets added
23/11/93
new object added, spacer - creates a null object
spheres of -ve radius are not output to POV (since it chokes)
Copyright now displayed when encountered in a file.
Updated the docs a bit.
22/11/93
tried to get the integer stuff displaying at better quality
dubious success I'm afraid, just can't seem to get it working!
untested: rescale so maxx or maxy is 1, separately from Z depth
inter frame pause display accounts for time taken for ifp delay,
making the prediction that much more accurate.
19/11/93
zbuffer is freed before attempting to save, providing better memory overhead
the moredata buffer in encoder is checked for NULL!
the x and y are scaled by 16 before being passed onto scan conversion
resulting in better float rendering, and with rounding slightly better
integer rendering
the bresenham shift factor uped to 13 from 10 giving near perfect float
rendering