Karnov

20th August 2002 04:03 UTC

making a small 2-d ball
id like to make a small circle that follows a superscope's bottom position

here is my SS as is

Code:
-------------------------
init: n=1500
on beat:
per frame: t=t-0.05
per point: d=i+v*0.2; r=t+i*3.14159*4; x=v; y=-i*60
-------------------------

and id like a little circle that follows the bottom end of this "worm"

(if at all possible; please just offer "hints" or a "guide" to doing it; instead of the raw code; that is no fun y i dont learn anything

Karnov

20th August 2002 05:08 UTC

here is an example in avs form
(btw; i havent gotten permission to use the lame curve yet; but i hope unconed wont mind?? :( )

here; i want the middle SS (the one in the middle; the small one) to be a ball; but i cannot figure out how to do that without manipulating the x variable
if manipulate the x variable it will not follow the two lines!
i really need help here


ok; i am going to bed
i hope the AVS fairy instills an idea in either my or your head to solve the problem
thanks everyone

damn
there should be a sleepy smilie :)

UnConeD

20th August 2002 10:48 UTC

1) A Replace/Replace effect list does nothing. Move everything outside it.

2) The verticallish superscopes have 4000 points??? The code contains:
y=-i*60

And as 'i' ranges from 0 to 1, it means you're drawing points in the y range -60 to 0. The AVS window only goes from -1 to 1 in both x and y. So 98.3% of those 4000 points are invisible.

3) I don't mind you using the Lamé curves, but you should at least change the sound-response. I just whipped up a quick decaying radius based on volume... (m variable)

4) My code is not optimized. The 'a' and 'b' are used to control the shape theoretically, but practically you can just modify the end coordinates with a constant.

Karnov

20th August 2002 16:42 UTC

thanks for all the help; i appreciate it; although i am not sure how to optimize (i understand what you are saying; but i do not understand which constant to use)

(i use replace/replace to sort things (i am pretty anal retentive) and it makes it easy to just disable that effectlist if i only want to work on a particular portion of my AVS

UnConeD

20th August 2002 17:03 UTC

An alternative to effect lists for grouping effects (though not so handy) is using "misc/comment" to separate them.
You can also use AVS comments to label some components:

Any character with ASCII code >127 will mark the beginning of a comment. All comments end when a ';' is encountered (so comments can span multiple lines). E.g.

a=cos(b);
¤ This is a comment;
c=atan2(d,e);

To type a character with code xxx, hold down ALT and type the number "0xxx" out on the numerical keypad:

hold ALT - 0 - 1 - 6 - 4 - release alt

will give you '¤'. Two digit numbers only need one leading 0 too: ALT-065 is an 'A'.


Btw I think you misunderstood my "cache constant expressions" code.

Suppose 'angle' is a constant, and you're using its sin, you don't need to actuall enter the since of angle as a numerical value, but just calculate "sin(angle)" in AVS once.

For example instead of using acos(-1) for 'pi' in your scope-point code, just declare "pi=acos(-1)" once in the Init section.

Karnov

21st August 2002 02:09 UTC

ok; i think i understand what you are saying; for the most part anyways :)

however; i cannot figure out this:

how can i manipulate the sound-response of the lame curve? i cannot figure out how to manipulate the 'm' var w/out making the cirlce incomplete at all times

i am a totally n00b AVSer and i still cannot figure out how to draw a circle with one(1) superscope
i know it is possible
but i cant figure it out
not enough math classes
not enough mad logic skillz
and i feel so dumb not being able to draw a freaking circle; plz help

UnConeD

21st August 2002 04:09 UTC

You need to use one 'm' value and use that across all 8 superscopes. The curve is not drawn optimally though, it could easily be packed in one large scope.. like this:

init:

n=100;tpi=acos(-1)*2

m=getspec(0,0,0)*.15+m*.85;p=2/(m*3+.1)

r=i*tpi;x=cos(r);y=sin(r);
x=pow(abs(x),p)*sign(x)*.9;
y=pow(abs(y),p)*sign(y)*.9;

Karnov

21st August 2002 18:55 UTC

ok; that makes a lot more sense to me than 8 seperate superscopes

thank you; i hope this preset will eventually be cool


but; if you download it you will see that the small circle doesnt move

and therefore looks stupid

could u please tell me how to make it move along with the bottom of the 2 long superscopes

(im guessing i use the perframe and the 'v' variable; but i cannot figure it out)

(oh and unconed; thx for the kickass tutorial on superscopes and all the help you have been giving me)

(oh yeah;(i like paraensythsis:)) how do you like the name :))

Karnov

21st August 2002 19:21 UTC

here is the avs
here

Karnov

27th August 2002 03:53 UTC

man; ive been toying with this for almost a week

i can NOT get it to work;
the ball just wont bounce to the beat and still be a ball :(
it is very frustrating:mad: :mad: :mad:
i really need someone to help me out here

thank you a lot:up:

Jaheckelsafar

27th August 2002 04:19 UTC

Quick, dirty, and probably not right, but it it close?

Karnov

27th August 2002 22:10 UTC

THANK YOU!!

damn

i cant believe u can do that in only one SS

damn

damn

thank you and good job



thanks:up: :up: :up: :up: :) :) :) :up: :up: :up:

Jaheckelsafar

28th August 2002 05:16 UTC

Umm... no prob? :)

You understand how it works alright, or are you good with that?

Karnov

28th August 2002 22:17 UTC

thank you; it makes sense now; im surprised how easy it was

thank you