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!Projector/!Help

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Archimedes World » AW-1996-11.adf » !Anim_Anim
Filename: !Projector/!Help
Read OK:
File size: 182A bytes
Load address: 0000
Exec address: 0000
File contents
 !Projector Version 1.18
 =======================
(FOR NOTES ON LATEST VERSION SEE END)

This projector is for playing Ace film format
films, produced with either:-
 Euclid+Mogul (3D)
 Paint+Splice (2D pixel based)
 Draw+Tween   (2D object based)
 Rephorm      (morphing & video effects)
 SnapHappy    (screen-grabbed films from other applications)


This is a Multidocument/Multiwindow version.
You can pop up a menu in the film window.
Most operations are obvious (try them!).

In Freeze mode you can single step the film
by using Select/Adjust on the window.

The New View option (under Misc) plays another
instance of the film, but uses the same copy in
memory, so is different from actually loading a
film twice.

Using an Obey file you can load a set of films, and
optionally set them to play immediately in a rolling
demo. The syntax is either:

[<Projector$Dir>] Film Film Film ... [-Cn] [-Fn] [-R[n]]

E.g:
Films.Humans Films.LitLogos Films.Chess -C2 -R

The -C and -F flags control the count for repeating
each film and the flyback count per frame respectively.

Or:
<Projector$Dir> -L {[-Cn -Fn] Film}...

E.g.
WimpSlot -min 800k
<Projector$Dir> -L -C1 -F8 Films.Chess -C2 -F2 Films.Flag

Note that the usual controls over each film are available.
Pressing S will skip to the next film irrespective of the
repeat count.

The -L flag forces the films to be loaded one at a time
rather than all in one go for the -R flag, and allows a
longer rolling demo from a Hard disk.

Please send examples of good films together with
permission (or not) for distribution to:
Ace Computing, 27 Victoria Road, CAMBRIDGE, CB4 3BW.

Details about Euclid, ArcLight, Mogul, Splice and
Tween can be also be obtained from the same address.

 Tony Cheal Jan-Feb 1990
 =======================

1.07 (Jul? 1990) The projector now intelligently
plays films in new modes which match the film's
mode in bits-per-pixel and aspect ratio.

1.08 (Aug 1990) New key - Ctrl-B in full screen
mode puts the keyboard into a mode which will
always single step the film forward one frame.
Another Ctrl-B will get it out of this mode.

Now includes a new EuclidX to play Lempel-Ziv
compressed films. Note that if a Euclid module
is already running which does not have Lempel-Ziv
decompression (i.e. prior to 2.12) then Lempel-Ziv
films will still cause errors.

1.09 (Sep 1990) Minor bug-fix for button clicks.

1.10 (Sep 1990) Supremecy bits now preserved in 4bpp modes. 

1.11 (Oct 1990) Pause at film starts during an
-L type Rolling demo can now be forced by using
using a new -W switch. The switch is cancelled
by a new repeat count, or another -W.

1.12 (Feb 1991) International version.

Made more (indeed completely?) resiliant to errors
in Redraw code, e.g. Unknown compression/expansion
technique.

-E flag to cause exit from a rolling demo. E.g.
<Projector$Dir> -L Films.Chess -C2 Films.LitLogos -E

1.13 (Mar 1991)

New "I" control when in full screen mode to turn
on Interlace when taking the film out of freeze mode.
The same control can be used to turn off the interlace
when freezing.

Fundamental bug in frame timing, which only showed
up on very fast machines (e.g. 540) has been fixed.

1.14 (May 1991)

Added new Delay function on IconBar menu. Sets the delay
for on-desktop playing.

1.15 (July 1991)

Single frame films are loaded Frozen.

1.16 (Oct 1991)

Corrected sprite allocation calculation (some big films wouldn't load).
Added 'Y' flag (on keyboard and for rolling demo) to set YoYo, and made
films yoyo off desktop if they were yoyo-ing on desktop. Still not
completely correct (see next para.)

Added count to Roll option on iconbar. Each film is repeated the relevant
number of times. If Yoyo-ing the count is the number of times the film
reaches the end. (So Roll 2 would give 2 forward/1 backward playing.)

A flag can be set inside the film itself to start yoyo-ing when the film is
loaded (bit 2 of byte 36), but this currently has to be set by steam. Its
action is inverted by using the -Y flag when loading films. The -Y flag stay
in force until a second -Y flag.

Added -D flag for rolling demos to stop people coming up to the stand and
stopping them! Commands in off screen mode have to have the shift key
pressed at the same time when this flag is set. (So Shift-Escape is needed
to stop the films.)

1.17 (Nov 1991)

Added a new key in Full screen mode. X will turn on a cursor (like the
counting cursor) which will report the coordinates of the top left of the
cursor itself. Note that the key which was used to initiate the cursor is
also used to switch it off.

1.18 (May 1992)

Alterations made to allow Iota/Ace new Film format to run (this format is
essentially an extended Ace Film).

1.19 (Jun 1992)

Small changes to set border colour on Iota films/speed up ColourTrans table
calls.

1.20 (Jul 1992)
Bugfix due to the changes in 1.19!

1.22 (May 1993)
Don't know what I did for 1.21!
New option for 'From file'. Next set of films will be slaved directly from
file, giving unlimited film length. File loading can be switched on/off
using the projector flag -O in a command line.

1.24 (Jan 1994)
Module fixes

1.25 (Aug 1994)
Auto Play from File if File is too big.

1.26 (Apr 1995)
Added support for Iota sound (in desktop only)
Allows empty films to be played.

1.27 (May 1995)
Added support for 16 and 32 bit films, and new Risc PC
style screen modes. There are some problems moving to
and from full screen display for films in 16 and 32 bit
modes, but in general things work ok. Be careful of films
created in 256 colours or less on a Risc PC that are bigger
than the usual RISC OS 3 screen mode for that many colours
(eg 256 colour films bigger than mode 28 - 640x480 pixels)
as these will cause projector to blow up quite spectacularly
if you go into full screen mode.

1.28 (June 1995)
Added support for new format films with 'load frozen' bit
and storage of workarea coordinates of capture area
when used with snaphappy (projector is only interested
in load frozen bit!).

1.29 (July 1995)
Fixed bug which caused unknown variable when first film loaded
was an AceFilm which was too big to fit in memory and so projector 
tried to play things from file.

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00000010  69 6f 6e 20 31 2e 31 38  0a 20 3d 3d 3d 3d 3d 3d  |ion 1.18. ======|
00000020  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
00000030  3d 0a 28 46 4f 52 20 4e  4f 54 45 53 20 4f 4e 20  |=.(FOR NOTES ON |
00000040  4c 41 54 45 53 54 20 56  45 52 53 49 4f 4e 20 53  |LATEST VERSION S|
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000000c0  70 6c 69 63 65 20 28 32  44 20 70 69 78 65 6c 20  |plice (2D pixel |
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000000f0  62 61 73 65 64 29 0a 20  52 65 70 68 6f 72 6d 20  |based). Rephorm |
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00000120  20 53 6e 61 70 48 61 70  70 79 20 20 20 20 28 73  | SnapHappy    (s|
00000130  63 72 65 65 6e 2d 67 72  61 62 62 65 64 20 66 69  |creen-grabbed fi|
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00000190  63 61 6e 20 70 6f 70 20  75 70 20 61 20 6d 65 6e  |can pop up a men|
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00000360  24 44 69 72 3e 5d 20 46  69 6c 6d 20 46 69 6c 6d  |$Dir>] Film Film|
00000370  20 46 69 6c 6d 20 2e 2e  2e 20 5b 2d 43 6e 5d 20  | Film ... [-Cn] |
00000380  5b 2d 46 6e 5d 20 5b 2d  52 5b 6e 5d 5d 0a 0a 45  |[-Fn] [-R[n]]..E|
00000390  2e 67 3a 0a 46 69 6c 6d  73 2e 48 75 6d 61 6e 73  |.g:.Films.Humans|
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000004b0  4e 6f 74 65 20 74 68 61  74 20 74 68 65 20 75 73  |Note that the us|
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000005a0  73 20 61 0a 6c 6f 6e 67  65 72 20 72 6f 6c 6c 69  |s a.longer rolli|
000005b0  6e 67 20 64 65 6d 6f 20  66 72 6f 6d 20 61 20 48  |ng demo from a H|
000005c0  61 72 64 20 64 69 73 6b  2e 0a 0a 50 6c 65 61 73  |ard disk...Pleas|
000005d0  65 20 73 65 6e 64 20 65  78 61 6d 70 6c 65 73 20  |e send examples |
000005e0  6f 66 20 67 6f 6f 64 20  66 69 6c 6d 73 20 74 6f  |of good films to|
000005f0  67 65 74 68 65 72 20 77  69 74 68 0a 70 65 72 6d  |gether with.perm|
00000600  69 73 73 69 6f 6e 20 28  6f 72 20 6e 6f 74 29 20  |ission (or not) |
00000610  66 6f 72 20 64 69 73 74  72 69 62 75 74 69 6f 6e  |for distribution|
00000620  20 74 6f 3a 0a 41 63 65  20 43 6f 6d 70 75 74 69  | to:.Ace Computi|
00000630  6e 67 2c 20 32 37 20 56  69 63 74 6f 72 69 61 20  |ng, 27 Victoria |
00000640  52 6f 61 64 2c 20 43 41  4d 42 52 49 44 47 45 2c  |Road, CAMBRIDGE,|
00000650  20 43 42 34 20 33 42 57  2e 0a 0a 44 65 74 61 69  | CB4 3BW...Detai|
00000660  6c 73 20 61 62 6f 75 74  20 45 75 63 6c 69 64 2c  |ls about Euclid,|
00000670  20 41 72 63 4c 69 67 68  74 2c 20 4d 6f 67 75 6c  | ArcLight, Mogul|
00000680  2c 20 53 70 6c 69 63 65  20 61 6e 64 0a 54 77 65  |, Splice and.Twe|
00000690  65 6e 20 63 61 6e 20 62  65 20 61 6c 73 6f 20 62  |en can be also b|
000006a0  65 20 6f 62 74 61 69 6e  65 64 20 66 72 6f 6d 20  |e obtained from |
000006b0  74 68 65 20 73 61 6d 65  20 61 64 64 72 65 73 73  |the same address|
000006c0  2e 0a 0a 20 54 6f 6e 79  20 43 68 65 61 6c 20 4a  |... Tony Cheal J|
000006d0  61 6e 2d 46 65 62 20 31  39 39 30 0a 20 3d 3d 3d  |an-Feb 1990. ===|
000006e0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
000006f0  3d 3d 3d 3d 0a 0a 31 2e  30 37 20 28 4a 75 6c 3f  |====..1.07 (Jul?|
00000700  20 31 39 39 30 29 20 54  68 65 20 70 72 6f 6a 65  | 1990) The proje|
00000710  63 74 6f 72 20 6e 6f 77  20 69 6e 74 65 6c 6c 69  |ctor now intelli|
00000720  67 65 6e 74 6c 79 0a 70  6c 61 79 73 20 66 69 6c  |gently.plays fil|
00000730  6d 73 20 69 6e 20 6e 65  77 20 6d 6f 64 65 73 20  |ms in new modes |
00000740  77 68 69 63 68 20 6d 61  74 63 68 20 74 68 65 20  |which match the |
00000750  66 69 6c 6d 27 73 0a 6d  6f 64 65 20 69 6e 20 62  |film's.mode in b|
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00000770  64 20 61 73 70 65 63 74  20 72 61 74 69 6f 2e 0a  |d aspect ratio..|
00000780  0a 31 2e 30 38 20 28 41  75 67 20 31 39 39 30 29  |.1.08 (Aug 1990)|
00000790  20 4e 65 77 20 6b 65 79  20 2d 20 43 74 72 6c 2d  | New key - Ctrl-|
000007a0  42 20 69 6e 20 66 75 6c  6c 20 73 63 72 65 65 6e  |B in full screen|
000007b0  0a 6d 6f 64 65 20 70 75  74 73 20 74 68 65 20 6b  |.mode puts the k|
000007c0  65 79 62 6f 61 72 64 20  69 6e 74 6f 20 61 20 6d  |eyboard into a m|
000007d0  6f 64 65 20 77 68 69 63  68 20 77 69 6c 6c 0a 61  |ode which will.a|
000007e0  6c 77 61 79 73 20 73 69  6e 67 6c 65 20 73 74 65  |lways single ste|
000007f0  70 20 74 68 65 20 66 69  6c 6d 20 66 6f 72 77 61  |p the film forwa|
00000800  72 64 20 6f 6e 65 20 66  72 61 6d 65 2e 0a 41 6e  |rd one frame..An|
00000810  6f 74 68 65 72 20 43 74  72 6c 2d 42 20 77 69 6c  |other Ctrl-B wil|
00000820  6c 20 67 65 74 20 69 74  20 6f 75 74 20 6f 66 20  |l get it out of |
00000830  74 68 69 73 20 6d 6f 64  65 2e 0a 0a 4e 6f 77 20  |this mode...Now |
00000840  69 6e 63 6c 75 64 65 73  20 61 20 6e 65 77 20 45  |includes a new E|
00000850  75 63 6c 69 64 58 20 74  6f 20 70 6c 61 79 20 4c  |uclidX to play L|
00000860  65 6d 70 65 6c 2d 5a 69  76 0a 63 6f 6d 70 72 65  |empel-Ziv.compre|
00000870  73 73 65 64 20 66 69 6c  6d 73 2e 20 4e 6f 74 65  |ssed films. Note|
00000880  20 74 68 61 74 20 69 66  20 61 20 45 75 63 6c 69  | that if a Eucli|
00000890  64 20 6d 6f 64 75 6c 65  0a 69 73 20 61 6c 72 65  |d module.is alre|
000008a0  61 64 79 20 72 75 6e 6e  69 6e 67 20 77 68 69 63  |ady running whic|
000008b0  68 20 64 6f 65 73 20 6e  6f 74 20 68 61 76 65 20  |h does not have |
000008c0  4c 65 6d 70 65 6c 2d 5a  69 76 0a 64 65 63 6f 6d  |Lempel-Ziv.decom|
000008d0  70 72 65 73 73 69 6f 6e  20 28 69 2e 65 2e 20 70  |pression (i.e. p|
000008e0  72 69 6f 72 20 74 6f 20  32 2e 31 32 29 20 74 68  |rior to 2.12) th|
000008f0  65 6e 20 4c 65 6d 70 65  6c 2d 5a 69 76 0a 66 69  |en Lempel-Ziv.fi|
00000900  6c 6d 73 20 77 69 6c 6c  20 73 74 69 6c 6c 20 63  |lms will still c|
00000910  61 75 73 65 20 65 72 72  6f 72 73 2e 0a 0a 31 2e  |ause errors...1.|
00000920  30 39 20 28 53 65 70 20  31 39 39 30 29 20 4d 69  |09 (Sep 1990) Mi|
00000930  6e 6f 72 20 62 75 67 2d  66 69 78 20 66 6f 72 20  |nor bug-fix for |
00000940  62 75 74 74 6f 6e 20 63  6c 69 63 6b 73 2e 0a 0a  |button clicks...|
00000950  31 2e 31 30 20 28 53 65  70 20 31 39 39 30 29 20  |1.10 (Sep 1990) |
00000960  53 75 70 72 65 6d 65 63  79 20 62 69 74 73 20 6e  |Supremecy bits n|
00000970  6f 77 20 70 72 65 73 65  72 76 65 64 20 69 6e 20  |ow preserved in |
00000980  34 62 70 70 20 6d 6f 64  65 73 2e 20 0a 0a 31 2e  |4bpp modes. ..1.|
00000990  31 31 20 28 4f 63 74 20  31 39 39 30 29 20 50 61  |11 (Oct 1990) Pa|
000009a0  75 73 65 20 61 74 20 66  69 6c 6d 20 73 74 61 72  |use at film star|
000009b0  74 73 20 64 75 72 69 6e  67 20 61 6e 0a 2d 4c 20  |ts during an.-L |
000009c0  74 79 70 65 20 52 6f 6c  6c 69 6e 67 20 64 65 6d  |type Rolling dem|
000009d0  6f 20 63 61 6e 20 6e 6f  77 20 62 65 20 66 6f 72  |o can now be for|
000009e0  63 65 64 20 62 79 20 75  73 69 6e 67 0a 75 73 69  |ced by using.usi|
000009f0  6e 67 20 61 20 6e 65 77  20 2d 57 20 73 77 69 74  |ng a new -W swit|
00000a00  63 68 2e 20 54 68 65 20  73 77 69 74 63 68 20 69  |ch. The switch i|
00000a10  73 20 63 61 6e 63 65 6c  6c 65 64 0a 62 79 20 61  |s cancelled.by a|
00000a20  20 6e 65 77 20 72 65 70  65 61 74 20 63 6f 75 6e  | new repeat coun|
00000a30  74 2c 20 6f 72 20 61 6e  6f 74 68 65 72 20 2d 57  |t, or another -W|
00000a40  2e 0a 0a 31 2e 31 32 20  28 46 65 62 20 31 39 39  |...1.12 (Feb 199|
00000a50  31 29 20 49 6e 74 65 72  6e 61 74 69 6f 6e 61 6c  |1) International|
00000a60  20 76 65 72 73 69 6f 6e  2e 0a 0a 4d 61 64 65 20  | version...Made |
00000a70  6d 6f 72 65 20 28 69 6e  64 65 65 64 20 63 6f 6d  |more (indeed com|
00000a80  70 6c 65 74 65 6c 79 3f  29 20 72 65 73 69 6c 69  |pletely?) resili|
00000a90  61 6e 74 20 74 6f 20 65  72 72 6f 72 73 0a 69 6e  |ant to errors.in|
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