Path: csiph.com!1.us.feeder.erje.net!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Ben Bacarisse Newsgroups: comp.programming Subject: Re: random points near central point Date: Sun, 23 Jul 2023 21:04:50 +0100 Organization: A noiseless patient Spider Lines: 69 Message-ID: <87tttul7h9.fsf@bsb.me.uk> References: <87tttzr9h0.fsf@bsb.me.uk> <874jlyqsi1.fsf@bsb.me.uk> <2c181aeb-49e4-45b8-8be1-fc1189878e3en@googlegroups.com> <0c4b6149-511e-432c-a5b7-c7c88a865006n@googlegroups.com> <70c10615-2473-4f66-ab1c-c632aa33fa5cn@googlegroups.com> <87fs5en385.fsf@bsb.me.uk> <87a5vmn1qp.fsf@bsb.me.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: dont-email.me; posting-host="46eee68be2a45be2a6fdd3ba499a7b10"; logging-data="370627"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+QoeS8IQTW15dFyQk6g+vptLVHZR2Lz/A=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Cancel-Lock: sha1:YvAT2cjwKbYKHauFYaQ/O33s/iA= sha1:fwtVUSl4JlJduWsE1Fd6x+FZxeY= X-BSB-Auth: 1.fe7bc6da169ee56d7552.20230723210450BST.87tttul7h9.fsf@bsb.me.uk Xref: csiph.com comp.programming:16568 Richard Harnden writes: > On 23/07/2023 15:25, Ben Bacarisse wrote: >> Ben Bacarisse writes: >> >>> fir writes: >>> >>>> sobota, 22 lipca 2023 o 21:24:23 UTC+2 Ed Prochak napisał(a): >>>>> On Friday, July 21, 2023 at 8:55:36 AM UTC-4, fir wrote: >>>>> [] >>>>>> no i dont want to put an asteroid in 'cylinder' from radius r1 to r2 >>>>>> i want to set most of them in circle r1 and rest in cylinder from r1 to r2 >>>>>> such way it would look naturally such as a n group of astronomical things >>>>>> or pieces of things when you shatter them on the floor - most density in >>>>>> the centre till r1 less near r2 and none outside r2 >>>>>> >>>>> I suggest you define your expected distribution first. >>>>> You might begin by defining the distribution you really want. >>>>> case 1: Is it constant density from 0 to r1 and then linear decline of density from r` to r2? >>>>> case 2: is is a natural distribution of "astronomical things"? >>>>> (clearly not like case 1, consider the solar system, including the asteroid belt) >>>>> case 3: is it a random scattering as "when you shatter them on the floor" >>>>> (clearly not like case 1 or 2. This is a gaussian distribution.) >>>>> case 4: SOMETHING ELSE??? >>>>> >>>>> State your desire clearly and we may be able to help you. Without a clear goal, >>>>> you'll be debugging potential solutions forever. >>>>> >>>>> Ed >>>> >>>> i dont care to much exactly i need to set a pack of 200 asteroids >>>> around some point to look good (but this should be not to much density >>>> in centre, ilke 10 asteroid cover the same piece of screen, thety may >>>> cover partially, but not like stack in 10 in one place)...also i want >>>> to use this function to set other things like in random group (but not >>>> like brush in pain, its more like more density in centre (where centre >>>> is not point but circle) and gradually less from r1 to r2 >>> >>> A bit like these: >>> >>> http://bsb.me.uk/tmp/r1.png >>> http://bsb.me.uk/tmp/r2.png >>> >>>> i think its not hard to understand what i want >>> >>> It's hard to understand what you write. I am sure what you want is >>> quite simple. This is not about C so I'm going to crosspost to >>> comp.programming and set followups. I won't post about it here again. >> You posted again in comp.lang.c and not here. Oh well... >> In case you choose to follow the proper etiquette, here's three other >> images that maybe match waht you want. It's really hary to tell. >> http://bsb.me.uk/tmp/r3.png >> http://bsb.me.uk/tmp/r4.png >> http://bsb.me.uk/tmp/r5.png >> > > Who knows what Fir wants? He seems determined to not explain. > > If he wants an asteriod belf, then r1 and r2 look good to me. > > If he wants a recently exploded moon/planet, the r4 and r5 look good. r3, > too, not so much. I can't make it out at all. But he also insists on posting in comp.lang.c where I think most people don't reply and don't intend to any more. Also he says he does not need any help, so that's easy! -- Ben.