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On 05/10/2010 11:33 AM, Thomas de Groot wrote:
> It is not described in the docs it seems... You can find the probability
> macro as the first one in rand.inc. I use it quite often to select between
> different plants for instance, or any selection of objects.
ha ... new one on me as well! since you've used it, perhaps you could
come up with a sentence or two and i'll add it to the wiki docs
i'll watch this thread or you can put it over here:
http://wiki.povray.org/content/Documentation_Talk:Reference_Section_7.3
jim
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"Jim Holsenback" <jho### [at] povray org> schreef in bericht
news:4be82250$1@news.povray.org...
> ha ... new one on me as well! since you've used it, perhaps you could
> come up with a sentence or two and i'll add it to the wiki docs
>
> i'll watch this thread or you can put it over here:
> http://wiki.povray.org/content/Documentation_Talk:Reference_Section_7.3
>
Well, you could maybe use something like this:
Prob(P, RS)
The probability macro returns true or false. P is the probability of
returning true (value between 0 and 1) RS is a random number stream.
Example code:
//start code
//If you want a 40% chance of red objects amongst blue ones
#local ObjProb = Prob(0.4, r);
object {
#if (ObjProb)
RedObj
#else
BlueObj
#end
.....
}
//end code
Thomas
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On 05/11/2010 05:28 AM, Thomas de Groot wrote:
> Well, you could maybe use something like this:
haha ... I think WE ALL deserve a RTFM on this one ;-)
It was already there:
http://wiki.povray.org/content/Documentation:Reference_Section_7.3#Discrete_Distributions
In the unix docs it's in section:
3.7.11.2.3 Discrete Distributions
Jim
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"Jim Holsenback" <jho### [at] povrayorg> schreef in bericht
news:4be91fcd$1@news.povray.org...
>
> haha ... I think WE ALL deserve a RTFM on this one ;-)
>
> It was already there:
>
http://wiki.povray.org/content/Documentation:Reference_Section_7.3#Discrete_Distributions
>
> In the unix docs it's in section:
> 3.7.11.2.3 Discrete Distributions
>
The thing is that in the unix docs, it does not appear in the Index.... so,
I assumed...
Thomas
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On 05/11/2010 11:39 AM, Thomas de Groot wrote:
> it does not appear in the Index....
it was missing this tag needed for it to appear in the index listing:
<!--<indexentry primary "Prob">--->
Jim
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