Stupid Code Question

JayPro · Post by **JayPro** » Tue Mar 14, 2006 10:03 pm

When you have a rnd() equation like:

A0= "1 +rnd(1)"

is that the same as if using the number with there being no rand factoring at all?

If so, then why not just use "1"?

chkman · Post by **chkman** » Wed Mar 15, 2006 12:23 pm

No way the same! A0 could be anything from 1 to 2. Rnd(1) by itself should return anything between 0 and 1 which is added to the constant 1.

A0="2+rnd(2)", for example, could return anything from 2 to 4. Etc...

JayPro · Post by **JayPro** » Wed Mar 15, 2006 1:21 pm

Thanks

So basically the rnd construct is kinda like multiplying:

I.E. 1+rnd(1) can be any integer from 1 to 2.

:. (therefore)

2 + rnd(5) can be anything from 2 to 10.

That said, I have a coupla further questions:

1. What does adding something like flor, sgn or sqrt do to the factorization (I know that sqr(rnd) increases randomness exponentially by whatever factor is reflected in the integers used) ?

2. How would changing the operator from + to * affect things? Would it be like using sqr(rnd) with plus?

Thanks.

chkman · Post by **chkman** » Wed Mar 15, 2006 4:52 pm

No, 2 + rnd(5) would give a result between 2 and 7. Rnd(5) by itself would give 0-5.

1. Flor would return an integer somewhere in the range of the rnd, i.e. flor(rnd(5)) would return 0, 1, 2, 3, and 4. I'm not sure about 5 because rnd(5) might only goto 4.999999 or something. I could test it later....
Sgn just returns 0 or 1 I think, have to look it up. Sqrt would give the square root of whatever rnd returns. Sqr(rnd(5)) would square a number 0 to 5 resulting in 0 to 25. Could just use rnd(25) instead.

2. 2 * rnd(5) would return 0 thru 10. 2 + 2 * rnd(5) would return a number 2 thru 12, same as 2 + rnd(10).

Does that help?

JayPro · Post by **JayPro** » Wed Mar 15, 2006 7:44 pm

Yes it did. Thanks.

I was gonna puke back a few examples of my own to make sure that I've got it understood. But a closer look at your examples make it clear.

So, then, you can use, I guess even exp(rnd) too, assuming you're daring enough to take randomization of your config to stellar heights.

chkman · Post by **chkman** » Wed Mar 15, 2006 8:01 pm

For sgn (use sign, since sgn is deprecated) you would get a 1 for any number 0 or above. So using sign with rnd would be a waste unless you had the possibility of it going negative like sign(rnd(10) - 5). Result would be 0 if rnd(10) returned less than 5, 1 if 5 or greater.

Flor(rnd(1)) does, in fact, return a 1 cccasionally. My evidence is:

R="flor(rnd(1))*i"
G="flor(rnd(1))*i"
B="flor(rnd(1))*i"
Vers=300

Save as a colormap, if you wait awhile there will occasionally be some color meaning flor(rnd(1)) does sometimes return an integer of 1.

But if you want a colormap worth watching check this out:

CCal ="4 + rnd(4)"
R="rnd(1)*i"
G="rnd(1)*i"
B="rnd(1)*i"
Vers=300

Yessireedy, one of my best !!!

P.S. You're welcome (I had started the post when you posted).

chkman · Post by **chkman** » Sun Apr 02, 2006 9:21 pm

JayPro,

Got some new configs? I'd be happy to post them on my website and include them in my crazy scripts....

JayPro · Post by **JayPro** » Sun Apr 02, 2006 10:32 pm

Matter Of Fact:

I've been config-engineering like a madman recently, hence my not being so much a talking presence on this board lately as a busy behind-the scenes Mod/spambuster (Now if *that* were a paying job...LMAO).

Anyhow, sometime early this week, I'll shoot a file of my latest brainchildren to both you and Andy for him to include in the Extras archives at his leisure (Every time I'd swear up and down for the past month and a half that I'd do just that, a new "engineering" binge would take hold; hence this excuse).

Teaser: Some of the flowfields IMD(irt)HO just may be my best ones yet. And a few of the Particle/WaveShapes aren't altogether plain either..............

chkman · Post by **chkman** » Mon Apr 03, 2006 7:09 pm

Cool, I look forward to it. I'll have 'em posted way before Andy gets around to it!!!!

Rovastar · Post by **Rovastar** » Tue Apr 04, 2006 5:11 am

Always good to see new stuff from you JP.

JayPro · Post by **JayPro** » Tue Apr 04, 2006 1:55 pm

I'm actually gonna spend some time today crossing my fingers and see if 3.5's gonna work for me.

Once that's done, I'll start bundling my new effects and sending them to all germaine parties.

In any even, the intended recipients should have everything *at the latest* by late tonite/early maÃ±ana.

chkman · Post by **chkman** » Tue Apr 04, 2006 8:37 pm

Thanks, JayPro I got your email and wrote back to ya. Could you please resend that in ZIP format? I did find a PC program to unzip the sitz file but it will cost me $25 and I am broke right now.

Working on some colormaps.....

JayPro · Post by **JayPro** » Tue Apr 04, 2006 8:44 pm

Did you check your mailbox? I resent it as per your request in a zip file about a half hour ago.

chkman · Post by **chkman** » Tue Apr 04, 2006 9:18 pm

Thanks, I just love those spam filters, it let your 1st email thru and "protected" me from your 2nd one.

Very nice. Great new flowfields.

Some of your waves are actually particles. I'll have to sort thru them. Still hope to post 'em tonite....

JayPro · Post by **JayPro** » Tue Apr 04, 2006 10:30 pm

You can, you know, simply change the status of the Particle by adding "Morphable = 4" to the Meta line.

I just figured that the ones I assigned the "1-3-3" rating would be abit intensive on the transition side.

EDIT: You've got mail explaining the aforementioned in greater detail.