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                                    presents

                                     4 F X

                        Brought to you in 50 FPS by mcCoy

                          Release date   October 5, 2024
                         Release party   Deadline

                            Production   Demo (200 KB)

           Music (Schmoddermann [cut])   Virgill
                           Inspiration   MnemoTroN
                          Code and GFX   Depeche

               "The Ladd Company" data   Daniel Hansen
                                 ASCII   Shapechanger
                    Cruncher (Cranker)   Bifat/TEK
                    Music player (LSP)   Leonard/Oxygene

                                System   Amiga (PAL)
                  Minimum requirements   Motorola 68000 CPU
                                         Original chip set (OCS)
                                         512 KB RAM

________________________________________________________________________________

                        Some words and notes from Depeche
________________________________________________________________________________

At a cozy dinner with Zodiac (https://demozoo.org/sceners/18618) we talked about
careers unrelated to tech. I wanted to jokingly encourage him to become a
forester. There would certainly be nice B-trees and Lindenmayer systems in his
forest. With a smile he then said that there would certainly be a lot of bugs
too. This is how the idea for a demo called "Zodiac?ÇÖs Forest" came about. In the
end there was only a single tree and only a few or hopefully no bugs. So I
changed the name to 4FX.
________________________________________________________________________________

mcCoy's The Ladd Company logo intro (Blade Runner edition)

After Depeche's Mode Demo, 4FX again starts with a surprise for my friend mcCoy
(https://x.com/mibosshard). He's probably the biggest Blade Runner fan I know
and he'll be happy about this intro.

I took the graphic data of the tree from Daniel Hansen's Apple II HGR2 Grid
project. https://github.com/DanielHansen-IMD/apple-ii-hgr-grid

And I copied the animated image structure from the original opening sequence.
https://youtu.be/36Wc-E1HEls

During the intro some things are pre-calculated for the following effects.
________________________________________________________________________________

Effect 1: LMS (Lindenmayer system)

A simple rotating tree based on the "classic" axiom F[+F]F[-F][F] with red
"cosmic rain" flowing down from time to time.
https://gist.github.com/roger-wetzel/53a72d69dcaba124f74336e38e567250
________________________________________________________________________________

Effect 2: TXT (Text)

I've always wanted to create an effect that is reflected in all directions. Only
the top left quadrant is drawn/blitted with pre-calculated text blocks. With the
help of a small lookup table, the quadrant at the top right is mirrored byte for
byte. The lower part is a cheap mirroring of the upper two quadrants with
negative bitplane modulos.

For color cycling, 4 bitplanes with 15 filled rings are precalculated. I came up
with this idea while reading through Losso's blog post You're breaking my balls!
where the circle equation is mentioned.
https://heckmeck.de/blog/you-re-breaking-my-balls
________________________________________________________________________________

Effect 3: SRF

This effect imitates a jingle from Swiss television SRF zwei.
https://youtu.be/1Gz4LND7GIc
As with the LMS effect, some played instruments trigger the movements. I was
amazed at how few lines need to be drawn for this effect. Think about how you
would do it for a moment.
________________________________________________________________________________

Effect 4: MTN (MnemoTroN)

The idea for this great effect came from MnemoTroN
(https://demozoo.org/sceners/67808).

He programmed a PoC that showed the structure of a Spreadpoint lettering. That
looked great. With his permission (well, I had annoyed him for a long time) I
was then allowed to implement the effect for the Amiga.

I copied the timing for the "neon flickering" at the end from Warner Bros.
https://youtu.be/w_PwrnhbKO0
________________________________________________________________________________

Last but not least: The music

Virgill sent me the track Schmoddermann, which was later heard in Teo's
PT Weekender VIII (Atlantis Calling) DJ set. https://youtu.be/9oIWkqqej_s?t=2448
I liked it straight away and asked what would happen to the track. Virgill then
left the track to us. It's a perfect fit for 4FX. Thank you very much Virgill.
________________________________________________________________________________

Thanks to Dipswitch for pointing us to Shapechanger's colly with the
Spreadpoint ASCII we are using in this NFO file.
________________________________________________________________________________

                           Visit www.spreadpoint.net

                             WE ARE INTERGALACTIC
                                JOIN THE POWER
                                   (C) 2024

Archive:  /home/aminet/aminet_root/doc/demo/intro/spreadpoint-4fx.zip
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--------  ------  ------- ---- ---------- ----- --------  ----
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       0  Stored        0   0% 2024-10-05 13:41 00000000  spreadpoint-4fx/music/
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