Re: [Flashcoders] Re: Biased Random Particle Distribution
No web site is configured at this address. Yeah, my wife lost the credit card and had to get it replaced, and I forgot to update the host. :-P It should be back up tomorrow afternoon. ryanm ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
No web site is configured at this address. Ron Wheeler wrote: Have a look at http://www.horsefish.net/ElementalFX/ if you want to see some neat flash by one of the regulars here. Ron Dwayne Neckles wrote: My god are you guys seriously talking about Flash here. I mean this is so advanced. I feel like I gotta be a math whiz and a flash whiz ( an unexpected combination ) to get all of this. god bless you guys, meanwhile Ill be lurking figuring out how exactly "biased random particle distribution" can be applied to flash.. ill send an fla if i get it figured out goodness, Dwayne Original Message Follows From: "clark slater" <[EMAIL PROTECTED]> Reply-To: Flashcoders mailing list To: "Flashcoders mailing list" Subject: Re: [Flashcoders] Re: Biased Random Particle Distribution Date: Sat, 27 May 2006 11:58:57 -0700 Thanks Ron, I'm working on a dynamic portfolio component for a client and I've been given static designs that I have to match. The beginning of the portfolio has a couple hundred *tiny* icons that appear spread across the stage in a non overlapping random pattern. Thing is, it's not a normal distribution - with many more of the icons appearing to the upper left (origin) of the stage...then spreading out in a random but decreasingly dense pattern across the stage. So it turned out that using the squared random value worked really well in this particular case. I was kind of surprised how well it works actually. That link's a wonderful resource for these kind of things, thanks a million. Clark On 5/27/06, Ron Wheeler <[EMAIL PROTECTED]> wrote: I was surprised that the squaring gave you any kind of banding since it should be a smooth bias. I think that the log transformation will give you less of a bias toward one side but I have not pulled out all my old stats and calculus books to check this out. It would seem that a normal distribution(cut in half and shifted) or a Poisson might be what you are looking for. What is the physical phenomenon are you trying to model? http://mathworld.wolfram.com/topics/ContinuousDistributions.html has more distributions that I ever knew existed. It has a picture and formula for each one. Ron ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
Have a look at http://www.horsefish.net/ElementalFX/ if you want to see some neat flash by one of the regulars here. Ron Dwayne Neckles wrote: My god are you guys seriously talking about Flash here. I mean this is so advanced. I feel like I gotta be a math whiz and a flash whiz ( an unexpected combination ) to get all of this. god bless you guys, meanwhile Ill be lurking figuring out how exactly "biased random particle distribution" can be applied to flash.. ill send an fla if i get it figured out goodness, Dwayne Original Message Follows From: "clark slater" <[EMAIL PROTECTED]> Reply-To: Flashcoders mailing list To: "Flashcoders mailing list" Subject: Re: [Flashcoders] Re: Biased Random Particle Distribution Date: Sat, 27 May 2006 11:58:57 -0700 Thanks Ron, I'm working on a dynamic portfolio component for a client and I've been given static designs that I have to match. The beginning of the portfolio has a couple hundred *tiny* icons that appear spread across the stage in a non overlapping random pattern. Thing is, it's not a normal distribution - with many more of the icons appearing to the upper left (origin) of the stage...then spreading out in a random but decreasingly dense pattern across the stage. So it turned out that using the squared random value worked really well in this particular case. I was kind of surprised how well it works actually. That link's a wonderful resource for these kind of things, thanks a million. Clark On 5/27/06, Ron Wheeler <[EMAIL PROTECTED]> wrote: I was surprised that the squaring gave you any kind of banding since it should be a smooth bias. I think that the log transformation will give you less of a bias toward one side but I have not pulled out all my old stats and calculus books to check this out. It would seem that a normal distribution(cut in half and shifted) or a Poisson might be what you are looking for. What is the physical phenomenon are you trying to model? http://mathworld.wolfram.com/topics/ContinuousDistributions.html has more distributions that I ever knew existed. It has a picture and formula for each one. Ron ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
My god are you guys seriously talking about Flash here. I mean this is so advanced. I feel like I gotta be a math whiz and a flash whiz ( an unexpected combination ) to get all of this. god bless you guys, meanwhile Ill be lurking figuring out how exactly "biased random particle distribution" can be applied to flash.. ill send an fla if i get it figured out goodness, Dwayne Original Message Follows From: "clark slater" <[EMAIL PROTECTED]> Reply-To: Flashcoders mailing list To: "Flashcoders mailing list" Subject: Re: [Flashcoders] Re: Biased Random Particle Distribution Date: Sat, 27 May 2006 11:58:57 -0700 Thanks Ron, I'm working on a dynamic portfolio component for a client and I've been given static designs that I have to match. The beginning of the portfolio has a couple hundred *tiny* icons that appear spread across the stage in a non overlapping random pattern. Thing is, it's not a normal distribution - with many more of the icons appearing to the upper left (origin) of the stage...then spreading out in a random but decreasingly dense pattern across the stage. So it turned out that using the squared random value worked really well in this particular case. I was kind of surprised how well it works actually. That link's a wonderful resource for these kind of things, thanks a million. Clark On 5/27/06, Ron Wheeler <[EMAIL PROTECTED]> wrote: I was surprised that the squaring gave you any kind of banding since it should be a smooth bias. I think that the log transformation will give you less of a bias toward one side but I have not pulled out all my old stats and calculus books to check this out. It would seem that a normal distribution(cut in half and shifted) or a Poisson might be what you are looking for. What is the physical phenomenon are you trying to model? http://mathworld.wolfram.com/topics/ContinuousDistributions.html has more distributions that I ever knew existed. It has a picture and formula for each one. Ron ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
Thanks Ron, I'm working on a dynamic portfolio component for a client and I've been given static designs that I have to match. The beginning of the portfolio has a couple hundred *tiny* icons that appear spread across the stage in a non overlapping random pattern. Thing is, it's not a normal distribution - with many more of the icons appearing to the upper left (origin) of the stage...then spreading out in a random but decreasingly dense pattern across the stage. So it turned out that using the squared random value worked really well in this particular case. I was kind of surprised how well it works actually. That link's a wonderful resource for these kind of things, thanks a million. Clark On 5/27/06, Ron Wheeler <[EMAIL PROTECTED]> wrote: I was surprised that the squaring gave you any kind of banding since it should be a smooth bias. I think that the log transformation will give you less of a bias toward one side but I have not pulled out all my old stats and calculus books to check this out. It would seem that a normal distribution(cut in half and shifted) or a Poisson might be what you are looking for. What is the physical phenomenon are you trying to model? http://mathworld.wolfram.com/topics/ContinuousDistributions.html has more distributions that I ever knew existed. It has a picture and formula for each one. Ron ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
Thanks Weldon - yeah I was tempted by the ease of a large switch statement relying on probability ranges but one of my many resolutions for this year is to improve my elementary maths and solve problems like this like a grown up =80) Clark ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] Re: Biased Random Particle Distribution
Chi-Squared also looks interesting.
Ron
clark slater wrote:
Hi Ron,
Thanks for jumping into this thread amongst the tumbleweeds. Yes, I
suspect
something logarithmic could work but don't know where to start. I am
trying
to distribute 1000 particles randomly in a rectangular distribution area,
with a bias towards one side of the rectangle.
Clark
On 5/26/06, Ron Wheeler <[EMAIL PROTECTED]> wrote:
Would a formula based on logarithms give you what you want as well?
You were not very specific about what you wanted the distribution to
look like.
Ron
clark slater wrote:
> Here I go answering my own question.
>
> To make it more dense toward the origin, use {x,y} = {random[]^2,
> random[]^2}--squaring the independently generated numbers
> (random[]*random[]
> won't work). The result is a distribution with a sharp cusp at the
> origin--the probability is a maximum there, and has a discontinuous
> derivative. You can use higher powers for narrower (and sharper)
> distributions.
>
> Damn useful I say!
> ___
> Flashcoders@chattyfig.figleaf.com
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
>
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.com
>
>
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Re: [Flashcoders] Re: Biased Random Particle Distribution
I was surprised that the squaring gave you any kind of banding since it
should be a smooth bias.
I think that the log transformation will give you less of a bias toward
one side but I have not pulled out all my old stats and calculus books
to check this out.
It would seem that a normal distribution(cut in half and shifted) or a
Poisson might be what you are looking for.
What is the physical phenomenon are you trying to model?
http://mathworld.wolfram.com/topics/ContinuousDistributions.html has
more distributions that I ever knew existed.
It has a picture and formula for each one.
Ron
clark slater wrote:
Hi Ron,
Thanks for jumping into this thread amongst the tumbleweeds. Yes, I
suspect
something logarithmic could work but don't know where to start. I am
trying
to distribute 1000 particles randomly in a rectangular distribution area,
with a bias towards one side of the rectangle.
Clark
On 5/26/06, Ron Wheeler <[EMAIL PROTECTED]> wrote:
Would a formula based on logarithms give you what you want as well?
You were not very specific about what you wanted the distribution to
look like.
Ron
clark slater wrote:
> Here I go answering my own question.
>
> To make it more dense toward the origin, use {x,y} = {random[]^2,
> random[]^2}--squaring the independently generated numbers
> (random[]*random[]
> won't work). The result is a distribution with a sharp cusp at the
> origin--the probability is a maximum there, and has a discontinuous
> derivative. You can use higher powers for narrower (and sharper)
> distributions.
>
> Damn useful I say!
> ___
> Flashcoders@chattyfig.figleaf.com
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
>
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.com
>
>
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Re: [Flashcoders] Re: Biased Random Particle Distribution
from a practical standpoint, something like this should work, it's
difficult to be sure at 5:30 in the AM.
get a random number from 1 - 10
var ranNum:Number = random(10)+1;
now if ranNum is less than 4 pick a random position within x of the origin
if ranNum is 6-8 select a random point within x + delta x
If ranNum is 9 - 10 select a random point from the entire range.
By playing with the ranges I used here you will get more or less
intensity near the origin. If this is too coarse, make ranNum a bigger
range and add more regions.
You could set this up in one tidy finction, it's less interesting than
the math, but it should get the job done.
On 5/27/06, clark slater <[EMAIL PROTECTED]> wrote:
Hi Ron,
Thanks for jumping into this thread amongst the tumbleweeds. Yes, I suspect
something logarithmic could work but don't know where to start. I am trying
to distribute 1000 particles randomly in a rectangular distribution area,
with a bias towards one side of the rectangle.
Clark
On 5/26/06, Ron Wheeler <[EMAIL PROTECTED]> wrote:
>
> Would a formula based on logarithms give you what you want as well?
> You were not very specific about what you wanted the distribution to
> look like.
>
> Ron
> clark slater wrote:
> > Here I go answering my own question.
> >
> > To make it more dense toward the origin, use {x,y} = {random[]^2,
> > random[]^2}--squaring the independently generated numbers
> > (random[]*random[]
> > won't work). The result is a distribution with a sharp cusp at the
> > origin--the probability is a maximum there, and has a discontinuous
> > derivative. You can use higher powers for narrower (and sharper)
> > distributions.
> >
> > Damn useful I say!
> > ___
> > Flashcoders@chattyfig.figleaf.com
> > To change your subscription options or search the archive:
> > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
> >
> > Brought to you by Fig Leaf Software
> > Premier Authorized Adobe Consulting and Training
> > http://www.figleaf.com
> > http://training.figleaf.com
> >
> >
> ___
> Flashcoders@chattyfig.figleaf.com
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
>
> Brought to you by Fig Leaf Software
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--
Weldon MacDonald
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Re: [Flashcoders] Re: Biased Random Particle Distribution
Hi Ron,
Thanks for jumping into this thread amongst the tumbleweeds. Yes, I suspect
something logarithmic could work but don't know where to start. I am trying
to distribute 1000 particles randomly in a rectangular distribution area,
with a bias towards one side of the rectangle.
Clark
On 5/26/06, Ron Wheeler <[EMAIL PROTECTED]> wrote:
Would a formula based on logarithms give you what you want as well?
You were not very specific about what you wanted the distribution to
look like.
Ron
clark slater wrote:
> Here I go answering my own question.
>
> To make it more dense toward the origin, use {x,y} = {random[]^2,
> random[]^2}--squaring the independently generated numbers
> (random[]*random[]
> won't work). The result is a distribution with a sharp cusp at the
> origin--the probability is a maximum there, and has a discontinuous
> derivative. You can use higher powers for narrower (and sharper)
> distributions.
>
> Damn useful I say!
> ___
> Flashcoders@chattyfig.figleaf.com
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
>
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.com
>
>
___
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Re: [Flashcoders] Re: Biased Random Particle Distribution
Would a formula based on logarithms give you what you want as well?
You were not very specific about what you wanted the distribution to
look like.
Ron
clark slater wrote:
Here I go answering my own question.
To make it more dense toward the origin, use {x,y} = {random[]^2,
random[]^2}--squaring the independently generated numbers
(random[]*random[]
won't work). The result is a distribution with a sharp cusp at the
origin--the probability is a maximum there, and has a discontinuous
derivative. You can use higher powers for narrower (and sharper)
distributions.
Damn useful I say!
___
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[Flashcoders] Re: Biased Random Particle Distribution
Here I go answering my own question.
To make it more dense toward the origin, use {x,y} = {random[]^2,
random[]^2}--squaring the independently generated numbers (random[]*random[]
won't work). The result is a distribution with a sharp cusp at the
origin--the probability is a maximum there, and has a discontinuous
derivative. You can use higher powers for narrower (and sharper)
distributions.
Damn useful I say!
___
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http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
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