First preset

[Amandio C]

My first attempt in presets. Electrowater - using blur code from Geiss.

[Amandio C]

.

[Cope]

Nice effect Milkdrop has a bit of a learning curve since the shaders were added, so if you have any questions ask away.

And welcome to the boards, looking forward to seeing more

[Amandio C]

Thank you Cope, I will. Nice effect your remix. Would it be possible to simulate raindrops? Just a few, say 1,2 per sec.

[Flexi]

[Cope]

I've given that some thought before but I haven't figured it out yet. Maybe flexi or martin could look into it

heh... speak of the devil

[Amandio C]

Raindrops simulated with a shape.

[Amandio C]

Here is the file.

[Flexi]

spam protection.
write some more posts and then you will be able to post links

Amandio C - Electrowater - rainy (Geiss blur code).milk

[Amandio C]

2 new presets, with use of Flexi's code.
http://www.amandioc.com/subwebs/Three_Citrus.zip

[Flexi]

Originally posted by Amandio C
2 new presets, with use of Flexi's code.
http://www.amandioc.com/subwebs/Three_Citrus.zip

[Amandio C]

3 new presets

[Amandio C]

here is the file.

[Flexi]

nice presets again. they bring some fresh accents

[Amandio C]

Thank you Flexi. You are doing wonderful work here.

[Nitorami]

Yeah, it's time to give some credits to Flexi. He's truely the heart and soul of this forum

[Amandio C]

Remix of "small life".

[Stahlregen]

Great use of shapes.

I also like that you have some really unique visuals there. Keep up the good work!

[Nitorami]

Yes, charming idea of how to use shapes. Very nice, these easter eggs. I took the liberty to polish a few of them up a bit

@Amandio: I am not sure what you had in mind with this code

rot=.00999*rot+.6+.55*sin(.05*time);

It looks like you intended to use rot from the previous frame, which is normally a useful idea to smooth variables but be warned it does not work with milkdrop internal vars such as rot, which are not remembered from one frame to the next, therefore rot = 0.0099*rot does nothing (if not something undefined) You must always create an own persistent var first, e.g.

rot_ = 0.99 * rot_ + (1-.99) * step;

rot_ would then follow the input variable "step" slowly, and can THEN be assigned to rot:

rot = rot_;

Took me a while to discover traps as these

[Amandio C]

I really appreciated the kind comments and most helpful tips.
Now I have a question for the experts.
I'm attaching a sample of some images I've been working on. They are produced with Gimp, using a simple script called "roto-translate". Roto-translate generates a chosen number of layers of an image, applying a chosen angle of rotation and/or pixels of translation in x and y.
To create these images, the original image (left) is set to "difference" mode, and therefore all layers generated by roto-translate are also in this mode. After the rotation/translation the image is flattened to black or white.
Would it be possible to obtain to emulate the difference layers in MD?

Amandio

[Amandio C]

Carefully polished indeed. One could almost eat them.

[Amandio C]

1 new preset, 1 remix.

[Stahlregen]

Originally posted by Amandio C
I'm attaching a sample of some images I've been working on. They are produced with Gimp, using a simple script called "roto-translate". Roto-translate generates a chosen number of layers of an image, applying a chosen angle of rotation and/or pixels of translation in x and y.

Well, I thought about this for a while and this is what I've come up with - it's iterative and eats quite a lot of shader instructions, though. Also, it gets distorted by aspect ratio.

I've put full comments into the comp shader that should walk you through the steps. Also see Cope's excellent Pixel shader guide for more info on shaders.

[Flexi]

I'm glad you like my elastic thread code.
The first version was optimized for 60fps and it needed a while to accelerate.
I changed it from time to time, but recently i came up with one version which works quite good with lower framerates too and i threw out some unnecessary variables.

remix this one

[Amandio C]

Thanks a lot for the feedback.
Indeed I enjoy your work Flexi. Probably the most ancient music visualization is dance, and surely it invokes that.
As this pc has no compatible videocard, I will check the presets later. I forgot to mention the formula Gimp uses to obtain difference layers, it's quite simple:
result layer = abs(top layer-bottom layer)
I suppose these are color values.

Amandio

[Amandio C]

Stahlregen the code is brilliant, congratulations. It overcame my best expectations.
A magic dancing preset, Flexi. I remixed instead again elastic study, hope you like it.

[Flexi]

well, the old code behaves somewhat strange i think.
the new one has a much more direct feedback.

...that nasty old 4bit color look is funny
makes me think of TurboPascal and Windows3.1 times

[ot]
my first own PC was a 486 with 33MHz and giant 32MB Ram

*lol* i just remember playing Commander Keen 4 on a 286 where i also made my first programming experiences with Logo, man... that's long ago...

edit: see this one - http://www.youtube.com/watch?v=nisFUjnO87g
...and now imagine looking back on Milkdrop in 20 years...

[Amandio C]

Precious memories, no doubt. The first computer game I remember playing was Pong, in 1980 maybe. But I sense even better the evolution when I see an old text-only game.
The new elastic code is very good, I'll check the remix back home. Have a nice day.

EDIT
I'm willing to use the roto-translate code but with a Lighten-only layer mode instead. The formula is:
result layer = max(bottom layer,top layer)
Thank you.

[Stahlregen]

Just replace
ret = abs(ret-GetPixel(uv2));
in the shader with
ret = max(ret,GetPixel(uv2));

[Amandio C]

Thanks again.
A preset for newbies like myself.

[Amandio C]

2 presets.

[Amandio C]

3 new presets.
I have a question. In "seagull" I would like to set the wings movement to various speed. When multiplying the argument of sin(time) by a variable the result is not good though. Any suggestion? Thank you.

[Flexi]

in your case i would suggest a replacement of the time variable.

try something like this:

v = 1; //set velocity here
t = t + v/fps;

anyway, i couldn't resist - here's one remix

[Amandio C]

I will check the remix later when I get home. And your code, thanks for the tip.

[Flexi]

I've shifted the the per-vertex code to the warp shader for more accuracy - looks good

[Amandio C]

Creepy, it feels like we're trapped inside. Great.

[Flexi]

it's from the sewers of the future underneath the temple of Fractopia.

3 days ago a blind passenger hopped in our shopping basket at IKEA

we decided to keep it and we named it "Pi"

i guess the pi rat would feel pretty well in that location - but isn't this idea far away from creepy?

[Amandio C]

Maybe he would run to make it rotate faster, like a hamster.
A new preset, with a bird again.
On this time of year seagulls haunt the mall where I take lunch to look for leftovers on the esplanade. A few months ago I left the table for a few seconds and one flew by and took my steak!

[Amandio C]

2 fresh ones. "Bossa" means in portuguese hump or wave.

[Flexi]

http://www.youtube.com/watch?v=gg5_mlQOsUQ

we have seagulls too.
they are so naughty, they fly by and grab the fish from tourists bread rolls.