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Amiga Plus 1996 #5
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Amiga Plus CD - 1996 - No. 5.iso
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grafik
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jacosub
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demo.js
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1996-04-15
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286 lines
# Demonstration script for JACOsub video titling software.
# You might want to print out a hard copy of this script, and refer to it
# while you play the script in Step Mode.
# This script demonstrates the flexibility of the JACOsub file format,
# going through nearly all of the features available. Don't be alarmed
# by the size; this script consists mostly of comments. The running time
# is less than 90 seconds.
# Now let's begin. All the directives and commands demonstrated in this
# script are shown in UPPERCASE the first time they are used, and in
# lowercase thereafter.
# First, let's set up some defaults. Time units default to SMPTE
# (1/30 second) units. We'll use 1/100 seconds because it's simpler to
# understand for now.
#TIMERES 100
# Note: All # commands may be specified by a single letter. For example,
# above we could have used #T instead of #TIMERES.
# Next, suppose this script consisted of subtitles played against a
# foreign film, and we noticed that the time events were drifting so that
# by the end of the script, the subtitles were occurring 2.2 seconds too
# soon. This means we need to stretch the script's total running time
# by 2.2 seconds to correct the drift. The #Ramp command does this. The
# number past the decimal point is time units (in 1/100 seconds as
# specified by the #T command above), not fractions of a second. The
# ramp correction may be positive or negative, and you can adjust it on
# the fly, while the script is playing.
#RAMP 2.20
# Set font 3 for using near the end of this script, where we demonstrate
# outlining and shadowing of mono-color fonts. JACOsub.font 18 is a
# mono-color mono-spaced font. (This font is the one normally used for
# displaying JACOsub's running clock.)
#FONT 3 JACOsub.font 18
# Let's change some default colors while we're at it....
#P1 0 14 14 (set "slow text" color 1 of primary palette to cyan)
#p3 d 0 0 1 (set color 3 of palette 1 to red, using hex notation)
# Now we will start with the list of timed lines. Each timed line has
# the format
# <start time> <stop time> <directive> <text>
# Let's load in a graphic file to serve as a backdrop for the first few
# titles, for the first 9 seconds. We use the RLB directive for this
# (meaning "aRgument directive, Load Background graphic").
0:00:00.00 0:00.09.00 RLB JACO.bbm 0 0 {0 0 centers logo on the screen}
# Now, show an introductory title centered on the screen for 4 seconds.
# This title demonstrates the newline escape character, or manual
# wordwrap. The new substrings created will also be word-wrapped
# automatically if they don't fit within the default width limits.
# You can also turn a title's wordwrapping off, with the W0 directive.
# Notice also that the concatenation escape code (the \ at the end of
# each line) is NOT the same as a newline in your text. The ending \
# character means, "assume that the next line continues where this line
# leaves off." It works even if you split a word into two pieces, as
# shown below with the word "capabilities."
# Concatenation ignores all space after the \ and all space before the
# first non-space character on the line following the \.
0:00:00.00 0:00:04.00 VM JACOsub\n\nThis script demonstrates \
some of the capa\
bilities of JACOsub.
# The next 3 lines demonstrate vertical positioning and overlapping time
# ranges. Notice how the times for each of the lines are set. All three
# lines are present on the screen only between times 6.00 and 6.50.
0:00:04.00 0:00:06.50 VT Text may be positioned at the top,
0:00:05.00 0:00:07.10 vm middle,
0:00:06.00 0:00:07.70 VB or bottom of the screen.
# The next title shows how you can insert comments inside the text.
# This is useful for making notes about translations and character names
# when subtitling foreign films. Here we also demonstrate how Italics
# (\I) and Normal (\N) escape codes can be embedded in the title text.
0:00:08.00 0:00:11.00 vm {this is a comment} (And, you just saw, {another \
comment} timing ranges for different lines of \
text \Iand\N graphics may overlap.)
# Here we demonstrate that graphics time ranges can overlap text time
# ranges.
0:00:9.00 0:00:12.60 rlb JACO.bbm 25 25 {place logo at lower right}
# Now we demonstrate left/right/center justification.
0:00:11.00 0:00:13.50 JL Within margin constraints\n\
that you set, text may be\nleft justified,
0:00:13.50 0:00:14.75 JC {the JC is redundant - it's the default}\
center\njustified,
0:00:14.75 0:00:16.00 JR and also\nright justified.
# Here we show what you can do with margin settings. The first line
# sets the right margin to 33% of the screen (left margin is at 1%), and
# the second line sets the left margin at 40% of the screen (right
# margin is at 99%). We also demonstrate two fonts on the same screen,
# and full justification using the JF:L directive.
0:00:15.60 0:00:22.00 vtHR33 It's possible, for example, to set margins \
so that text is confined to the left 1/3 of the screen.
0:00:17.50 0:00:22.00 vbHL40F1JF:L And you can place other text elsewhere \
(with a different font, if desired) by setting different \
margins for it. As you can see here, the left and right edges \
of a text block can be aligned automatically, also.
# Now we demonstrate different text styles and colors. Notice here we
# use the VL directive to position the text on different lines. The
# position of the "line number" after the VL depends on font height.
0:00:22.30 0:00:27.80 VL3 Text may appear in different styles\n(Normal, \
\BBold, \IItalic\N)
0:00:22.30 0:00:27.80 vl5 and different \C1colors
# Notice here the default text color has been
# changed to 1 and restored to 3 inside the text.
0:00:24.00 0:00:27.80 CF1vl7 all \C3mixed \C1\Itogether.
# On the same screen, demonstrate loading in a different color palette
# so that another color appears (color 3=red as defined in Palette 1).
0:00:25.00 0:00:27.80 CP1vl8 (even with different palettes.)
# Before this screen disappears, let's demonstrate the palette fade
# effect using a dummy blank titles. The next title will fade the
# current palette (1 from the previous title) to 0 in 60 video fields
# (about 1 second on NTSC displays).
0:00:25.50 0:00:27.80 EP0:60 {fade back to palette 0} ~
# Demonstrate the JF:U directive (Unconditional Full Justification)
# by displaying some examples of movie credits. The credits are
# written to be approximately the right length, and the JF:U directive
# does the rest of the work, adjusting the spaces so the left and
# right edges are flush with the current margins.
# Note also that the VM directive would normally center the block of
# credits on the screen, but here we use VM1 to shift the centered
# block down 1 line.
0:00:27.80 0:00:32.00 vtcf1 {description} ``Unconditional'' justification is useful for credits:
0:00:27.80 0:00:32.00 vm1f1JF:U {show credits in various styles}\
Clint Eastwood . . . . . . . Dirty Harry\n\
Michael J. Fox . . . . . . Clint Eastwood\n\n\
Madonna - - - - - - - - - - - Herself\n\
Eddie Murphy - - - - - - - - Axel Foley\n\n\
George Lucas -------------------- Director
# Here's a trick. We will rapidly cycle through some blank screens
# so that the current display will "catch up" to the background display
# buffer being generated. We use color 1 text here, which is slow.
# The title directive doesn't matter for these rapid blanks, so we
# will use the program default (D) here. The default typically
# positions a title at the bottom center of the display, using margins
# at the left and right edges (1% and 99%), auto-wordwrap, font 0,
# color 3, etc. You may change the default behavior with the #D or
# #D0 command.
0:00:32.00 0:00:32.02 D ~
0:00:32.02 0:00:32.04 d ~
0:00:32.04 0:00:32.06 d ~
0:00:32.06 0:00:32.08 d ~
# But before we show catching up to the generating buffer, just for
# fun, let's define directive D2 as CF1VM to use in the next line, for
# "Color Fontface 1, Vertical position Middle." We'll also name this
# default directive to middle_altcolor. This way, we can use either
# designation D2 or [middle_altcolor] in the title's directive string.
#D2 CF1VM middle_altcolor
0:00:32.10 0:00:36.00 [middle_altcolor] Here the display was \
intentionally ``caught up'' to the background generation, \
to show how slowly color 1 text is generated in the background.
# In the next title, lots of things happen at once. We demonstrate
# Three things: block justification with word justification, the vertical
# continuation directive, and background shading.
# The first title after this comment demonstrates the JB (Justify Block)
# directive. Text is left-justified, but it is not positioned flush with
# the left margin - the block of text is centered on the screen (JBC) but
# the first character of each line are flush left. In other words, the
# JL means "left justify" but JBC means "center the block of text."
# The next title demonstrates the VU directive to show how you can
# continue a long line of text underneath previous ones.
# Here we also demonstrates background shading -- a semi-transparent
# rectangle will appear behind the text, 8 pixels larger than the text
# all around, using the directive CS8.
0:00:36.30 0:00:45.00 [middle_altcolor]jlJBC \
You will see that sort of foreground generation if you use a lot of \
``slow'' color 1 text.\n\C3(Color 3 text is very fast.)
0:00:36.30 0:00:45.00 VUcf1CS8 \n\n\Plan your timings so the display won't catch up to the view being generated in the background.
# Demonstrate backgrounds that are opaque to the genlock, by specifying
# a background color. This will clear the whole screen to that color
# before any text is drawn on it, and before any IFF files are overlaid
# onto it.
0:00:45.00 0:00:51.00 CB1vm You can change the screen background color, too.\
\n\nThis is useful if you want to make an opaque screen when using a genlock.
# Now we demonstrate some of the transition effects. We will use
# the VU directive to stack the lines so that they are all treated
# as a single block having the VM directive of the first line.
0:00:51.00 0:01:00.00 EIO10vm {iris open} A variety of transition effects
0:00:51.80 0:01:00.00 EWLvu {wipe left} includes wipes in any direction
0:00:52.60 0:01:00.00 ED32vu {dissolve} pseudo-dissolves,
0:00:56.00 0:01:00.00 ERD4vu {medium roll down} and scrolling effects.
# Demonstrate the #Include command.
# The VH (vertical height) and CSL (background shade line) directives
# are demonstrated in the #included script.
#I 0:01:00.00 idemo # include another script, offset by 60 seconds
# Outlining and shadowing. The first and second lines show outlining
# a mono-color font. The third line demonstrates font shadow generation.
# The shadow extends to the southwest (lower left). The fourth line
# demonstrates both outlining and shadowing (to the southeast). We use
# font 3 for all these four lines (font 3 was set to JACOsub.font 18 in
# the beginning of this script).
0:01:08.00 0:01:15.00 FO2f3vm JACOsub can also generate outlines of any thickness around normal mono-colored fonts,
0:01:08.00 0:01:15.00 fo3f3vu as you can see here.
0:01:08.00 0:01:15.00 FSSW4f3vu \nAlso, dropshadows in any of 8 directions are possible,
0:01:08.00 0:01:15.00 fsSE3fo2f3vu \nand outlines and shadows may be combined.
# Demonstrate clock pausing. This is useful for creating
# a single script to handle multiple sides of a laserdisc.
# At the same time, we'll decorate the screen with some colored
# rectangles. We'll do the rectangles first, so the text will appear
# on top of them. The rectangles themselves overlap, so the order in
# which we specify them is also important.
0:01:15.00 0:01:16.00 cf1RDB 20 20 80 80 {big color 1 rectangle}
0:01:15.00 0:01:16.00 cf2rdb 25 25 75 75 {medium color 2 rectangle}
0:01:15.00 0:01:16.00 cf3rdb 30 30 70 70 {small color 3 rectangle}
0:01:15.00 0:01:16.00 cf0rdb 35 35 65 65 {smaller color 0 rectangle}
0:01:15.00 0:01:16.00 vm Right now the clock is paused (you can see this \
if you play the script using the clock display).\n
0:01:15.00 0:01:16.00 vuf1cf1 Press any key to continue playing, or ESC to abort.
#CLOCKPAUSE 0:01:15.00
# Show the last screen. We'll use the alternate frame-count format for
# the start and stop times. For this script, there are 100 counts per
# second. Normally this format would be used when the time resolution
# is 30 per second (which would have been the default if #T100 wasn't
# specified at the beginning of the script).
# The times below correspond to 0:01:16.00 and 0:01:21.00.
# One last vertical directive to demonstrate: VA. This is the opposite
# of VU. It causes a title to appear immediately Above the previous
# title. In the case below, the second title will appear above the
# first. The same effect can be achieved by reversing the order of the
# lines, and using VM for the first directive and VU for the second.
@0007600 @0008100 vm \n\nAt that time, you may press any key to return to the Editor.
@0007600 @0008100 VA OK, this script will be finished when the screen goes blank.
# You probably noticed that most of the lines above used the VM (Vertical
# Middle) directive. We could have made this the default, by specifying
# the global command #DVM near the beginning of the file. Then we
# wouldn't have had to specify VM on each line, but we would have had to
# specify VB (the former default) for those lines positioned at the bottom
# of the screen.
# One last note: If you encounter a problem in the way JACOsub behaves,
# see if you can duplicate the problem in this demo script, and send me
# a report (matulich_a@seaa.navsea.navy.mil). I use the demo script for
# debugging purposes, because it does nearly everything JACOsub can do.