Maya nParticle only calculates friction/stickness between particles and rigid bodies, not friction is encountered between particles. My guess is the algorithm complexity is too high. Anyway there is two relative easy ways to fake the effect, according to my searching.
想要用一个一包糖粒堆在物体（对又是它..）上的片段，发现Maya的nParticle只计算粒子和Rigid body的摩擦力不计算粒子和粒子间的摩擦力（想来是算法复杂度太高了），所以不管怎么搞最终都会摊成大烧饼，并且还会不停的抽搐.. 查了下大概有两个相对简单的方法
1. hold particles with a invisible rigid body. 2. Use RealFlow, which seems to have much more handy control over particles
I’m not happy with either. 1 is lame. 2 too much trouble, have to get hang of another environment. If I must do scripting, I choose to learn mel.
So the algorithm is:
It’s unlikely to mess with friction as I guessed above. I tried to modify per particle mass to let them stuck in the space. Yea that works but they tend to be headbutted by other particles and flying around.. for science. Later I googled out it’s possible to control force field per particle, with attribute named “Field name”_”option name”. That is to say adding attribute “gravityField1_magnitude” to nParticle2 will grant you control over per particle gravity from the field.
On creation:
[php]
global int $freezeCap=5; //be completely frozen after the cap rounds
global int $gravityPP=500;
global float $dragPP=100;
global float $accelerationTrigger=15; //the speed parameter to trigger ‘I’m free again!", which leads to free droping.
global int $n[100000]; //how many times have the particle been locked
global int $preVel[100000]; //velocity of last frame
global int $locked[100000];
nParticleShape4.dragField1_magnitude=0;
nParticleShape4.gravityField1_magnitude=$gravityPP;
global int $init=1;
if($init==1) {
int $i;
for($i=0;$i<100000;$i++) {
$n[$i]=0;
$locked[$i]=0;
}
$init=0;
}
[/php]
Before dynamics:
[php]
int $id=nParticleShape4.particleId;
float $vel=abs(nParticleShape4.velocity);
//print("nParticleShape2.velocity "+$nParticleShape2.velocity+"\n");
if($vel>$preVel[$id]+$accelerationTrigger) {
$n[$id]=0;
nParticleShape4.dragField1_magnitude=0; //If it’s free again, unlock and erase record
}
else {
$freezeFact=$n[$id]/$freezeCap; //progress bar of locking
if($freezeFact>1)
$freezeFact=1;
$n[$id]+=1;
nParticleShape4.dragField1_magnitude=$freezeFact*$dragPP; //increase drag force depending on locking level
nParticleShape4.gravityField1_magnitude=$gravityPP*(1-$freezeFact)*(1-$freezeFact); //parabola is better according to experiment
nParticleShape4.velocity=<<0,0,0>>;
}
$preVel[$id]=nParticleShape4.velocity;
[/php]
The script is not bad to me.. adjustable parameters are handy. Time efficiency is acceptable (as a former ACMer, I can confirm this is O(n), can’t be better). 20 million particles * 100 frames cost my i7 half an hour. Not perfect but enough for bragging.
1. 弄个透明的动画的rigid body来把粒子圈起来。 2. 用RealFlow，我只用RealFlow模拟水，但是显然那它对粒子的控制比Maya厉害得多。
两个方法我都不高兴，1太不屌爆，2太麻烦，要做很多熟悉另一个环境的工作，且要写脚本，所以不如来学下mel。下了本书叫Maya Python — for Games and Film，翻了一百页发现Python在Maya上基本是庞大的workflow中工程师为了其他人方便写的maya程序，并且也要有mel基础，不是我要的。
总之，思路是：
想要计算摩擦力显然是不现实的，说过了。我先通过改质量的途径让粒子满足条件时失去质量以停在原地不受重力影响，停是能停住但是会被别的particle撞飞.. 非常科学。后来查到可以使用 <力场名>_<属性名> 的方式控制Per Particle的行为，即，给nParticle2添加名为gravityField1_magnitude的attribute程序就会使用它来控制它受到重力场1的magnitude。然后通过DragField让particle稳定。我在注释里详细说。
粒子生成时脚本：
[php]
global int $freezeCap=5; //be completely frozen after the cap rounds
global int $gravityPP=500;
global float $dragPP=100;
global float $accelerationTrigger=15; //the speed parameter to trigger ‘I’m free again!", which leads to free droping.
global int $n[100000]; //how many times have the particle been locked
global int $preVel[100000]; //velocity of last frame
global int $locked[100000];
nParticleShape4.dragField1_magnitude=0;
nParticleShape4.gravityField1_magnitude=$gravityPP;
global int $init=1;
if($init==1) {
int $i;
for($i=0;$i<100000;$i++) {
$n[$i]=0;
$locked[$i]=0;
}
$init=0;
}
[/php]
动态前的脚本：
[php]
int $id=nParticleShape4.particleId;
float $vel=abs(nParticleShape4.velocity);
//print("nParticleShape2.velocity "+$nParticleShape2.velocity+"\n");
if($vel>$preVel[$id]+$accelerationTrigger) {
$n[$id]=0;
nParticleShape4.dragField1_magnitude=0; //If it’s free again, unlock and erase record
}
else {
$freezeFact=$n[$id]/$freezeCap; //progress bar of locking
if($freezeFact>1)
$freezeFact=1;
$n[$id]+=1;
nParticleShape4.dragField1_magnitude=$freezeFact*$dragPP; //increase drag force depending on locking level
nParticleShape4.gravityField1_magnitude=$gravityPP*(1-$freezeFact)*(1-$freezeFact); //parabola is better according to experiment
nParticleShape4.velocity=<<0,0,0>>;
}
$preVel[$id]=nParticleShape4.velocity;
[/php]
个人感觉这个还不错，有很多参数可以控制，效率也还行（前ACMer表示这个就是O(n)..不能再低了），200万粒子100帧i7跑半个小时。显然不完美，蒙人没问题。
Thank you, I have recently been looking for information approximately this topic for ages and yours is the best I have discovered so far.
However, what in regards to the conclusion? Are you certain about the supply?
Thе upcoming new physical аrea at OMT promises immersive math experiences,sparking lifelong love fⲟr tһe subject
ɑnd inspiration fоr test success.
Open уour child’s cοmplete capacity in mathematics ԝith OMT Math
Tuition’ѕ expert-led classes, tailored to Singapore’ѕ MOE
curriculum foｒ primary, secondary, andd JC students.
Ƭһe holistic Singapore Math technique, ѡhich constructs multilayered analytical abilities, highlights
ѡhy math tuition іs essential fօr mastering tһe curriculum and preparing fоr future careers.
Math tuition in primary school school bridges gaps іn classroom
learning, guaranteeing trainees comprehend complicated
subjects ѕuch aѕ geometry and data analysis Ьefore the PSLE.
Individuyalized math tuition іn secondary school
addresses individual learning gaps in topics ⅼike calculus
аnd statistics, stopping tһem fгom impeding O Level success.
Junior college tuition ρrovides access tⲟ
additional resources lіke worksheets and video clip explanations, enhancing Ꭺ Level syllabus insurance coverage.
OMT’ѕ exclusive curriculum improves MOE requirements tһrough an alternative
technique tһat nurtures botһ scholastic abilities аnd
an enthusiasm for mathematics.
OMT’ѕ on the internet tuition іѕ kiasu-proof leh, offering үou that additional edge tο outmatch in O-Level math examinations.
Math tuition bridges spaces іn classroom learning,
guaranteeing trainees master complicated
concepts vital fοr leading examination performance іn Singapore’s rigorous MOE syllabus.
Αlso visit my web site alvin chong concept math tuition centre (http://www.bangbogo.com/bbs/board.php?bo_table=receive&wr_id=22816&wr_division=&wr_status=&wr_open=&wr_gu=)
Hallo, ich bin beim Stöbern hier gelandet und ich stelle fest, dass ich viel dazugelernt habe. Ich selbst richte seit einiger Zeit mein Haus und jeder Hinweis ist Gold wert. Liebe Grüße in die Runde.
Wertvoller Beitrag. Aus meiner Erfahrung die Farbwahl die Basis von allem ist. Ich empfehle, sich nicht zu hetzen.
โพสต์นี้ อ่านแล้วได้ความรู้เพิ่ม ค่ะ
ผม ได้อ่านบทความที่เกี่ยวข้องกับ ข้อมูลเพิ่มเติม
ซึ่งอยู่ที่ Blanca
ลองแวะไปดู
มีตัวอย่างประกอบชัดเจน
ขอบคุณที่แชร์ เนื้อหาดีๆ นี้
จะรอติดตามเนื้อหาใหม่ๆ ต่อไป
Thanks for this insightful article! I’ve been looking for natural ways to support my overall wellness and
this gave me some useful ideas. ProvaDent
is something I’ve been reading about lately. Appreciate the info.
https://eng-us-provadent.com/
Последние одесские новости https://dverikupe.od.ua и происшествия за сегодня: оперативная информация о событиях в Одессе и области, ДТП, происшествиях, работе городских служб, политике, экономике, обществе, погоде и других важных новостях дня.
Здорова, народ А на работу через пару часов Рассол уже не лезет Короче, нашел реально работающий способ — капельница от похмелья быстрый результат Поставили капельницу с солевым раствором В общем, вся инфа по ссылке — капельница от запоя цена [url=https://kapelnicza-ot-pokhmelya-voronezh-xqt.ru]капельница от запоя цена[/url] Капельница — это быстро и эффективно Перешлите тем кто в такой же ситуации
Good post! We will be linking to this particularly great content on our website.
Keep up the good writing. https://Goelancer.com/question/lexperience-unique-de-ensemble-repas-terrasse-5/
Następnie wróć do getmyfb.com i wklej link w polu tekstowym na stronie głównej.
При выборе качества сразу отображается
размер будущего файла.
This paragraph is really a pleasant one it assists new the web users, who
are wishing for blogging.
Здорово, народ Жесть после вчерашнего Рассол уже не лезет Короче, нашел реально работающий способ — капельница от похмелья клиника на дому Поставили капельницу с солевым раствором В общем, телефон и цены тут — капельница после запоя цена [url=https://kapelnicza-ot-pokhmelya-voronezh-mnb.ru]капельница после запоя цена[/url] Не мучайтесь рассолами Перешлите тем кто в такой же ситуации
Hello there! This article couldn’t be written any better!
Looking at this article reminds me of my previous roommate!
He always kept talking about this. I am going
to send this article to him. Fairly certain he will have a great read.
I appreciate you for sharing!
늘 마사지에 관심이 많았는데,
이 정보를 접하고 동해출장안마를 이용해
보기로 했어요.
막상 이용해 보니 정말 좋았어요.
동해힐링마사지가 이렇게 전문적인 줄
미처 몰랐어요.
앞으로도 애용할 것 같아요.
Thanks for this insightful article! I’ve been looking for natural
ways to support my overall wellness and this gave me some useful ideas.
SightCare is something I’ve been reading about lately.
Appreciate the info. https://us-eng-sightcare.com/
http://cnba-transportfluvial.fr/swf/blog/code_promo_1xbet_afrique_bonus_exclusif.html
Отличная статья про как подобрать переноску по размеру.
Советую ознакомиться. Благодарю за труд!
Good answer back in return of this issue
with solid arguments and telling all concerning that.
Thanks for this helpful article! I’ve been looking for natural
ways to support my overall wellness and this gave me some useful ideas.
Nerve Recover Max is something I’ve been reading about lately.
Appreciate the info. https://us-nerverecovermax.com/
Great post. I was checking continuously this blog and I’m impressed!
Very useful information specially the last part 🙂 I care for such information much.
I was looking for this particular information for a very
long time. Thank you and good luck.
I was recommended this blog by my cousin. I’m not sure whether this post is written by
him as nobody else know such detailed about my difficulty.
You are wonderful! Thanks!
https://therockpit.net/wp-content/pages/melbet_free_promo_code_enter__.html
سلام و عرض ادب، من امروز در حال جستجو
در فضای وب با این وبسایت پیداش کردم و واقعا تحت تاثیر قرار گرفتم.
اطلاعاتش خیلی کامل بود و کمتر همچین وبسایتی پیدا کنم.
فکر کنم برای افراد مختلف ارزش دیدن داره.
اگه دنبال محتوای مفید هستن بد نیست برن ببینن.
در کل راضیکننده بود و احتمالا باز هم سر میزنم
در کل ماجرا
برای اونایی که میخوان وارد بشن
بازیهای شانسی
میخوان امتحان کنن
این وبسایت
فکر کنم بتونه
ارزش بررسی داشته باشه
یه نکته مهم اینه که
پلتفرمهایی مثل
پلتفرم enfeϳaronline
و
sibbet فعال
مطرح شدن
در پایان
خوب بود
و
باز هم
بازم میام
.
Alsso viѕit my blog post; بازی Touch Me چیست؟
Доброго дня, земляки. Близкий человек снова сорвался. Дети напуганы. Платная клиника — бешеные счета. Короче, реально крутые врачи — вывод из запоя на дому круглосуточно. К утру человек пришёл в норму. В общем, вся инфа и контакты по ссылке — вывод из запоя в спб [url=https://vyvod-iz-zapoya-na-domu-sankt-peterburg-qbf.ru]https://vyvod-iz-zapoya-na-domu-sankt-peterburg-qbf.ru[/url] Звоните прямо сейчас. Перешлите тем, кто в беде.
This is a very informative post about online casinos and betting
platforms. I especially liked how it explains the importance of
choosing a trusted site before signing up.
Many players often ask where they can find reliable
gaming platforms with fair odds and smooth payouts. From what I’ve seen,
checking platforms like vn22vip helps users compare features, bonuses, and overall experience.
Thanks for sharing these insights — they’re helpful for both beginners and experienced bettors.
Usually I don’t learn post on blogs, however I would like to say that this write-up
very compelled me to take a look at and do it! Your writing taste has been surprised me.
Thank you, quite great article.
Hi there, I believe your blog could possibly be having
web browser compatibility issues. Whenever I look at your blog in Safari, it looks fine but when opening in I.E., it’s got some overlapping
issues. I simply wanted to give you a quick heads up!
Besides that, excellent blog!
Thanks for one’s marvelous posting! I certainly enjoyed reading
it, you will be a great author.I will be sure to bookmark your
blog and will often come back in the future.
I want to encourage you continue your great work, have a nice afternoon!
my web site: KASACKS DAMEN
Доброго вечера Тошнит, трясёт, сил нет Поилки и таблетки не помогают Короче, единственное что реально спасает — капельница от похмелья клиника на дому Приехали через 30 минут В общем, жмите чтобы сохранить — сколько стоит прокапаться от алкоголя на дому [url=https://kapelnicza-ot-pokhmelya-voronezh-ges.ru]сколько стоит прокапаться от алкоголя на дому[/url] Капельница — это быстро и эффективно Перешлите тем кто в такой же ситуации
Thanks for this insightful article! I’ve been looking for natural ways to support my overall wellness and
this gave me some useful ideas. America Slim Again is something I’ve been reading about lately.
Appreciate the info. https://americaslimagain.com/
¡No lo puedo creer, hermano! Acá les escribe Derlis desde Fernando de la Mora.
Como un enfermo de las apuestas deportivas y fanático a
muerte de la Albirroja, siento que el corazón me va a reventar de tanta emoción.
Al empezar el campeonato, quería romper el televisor de la rabia al perder 4-1 contra Estados Unidos, una vergüenza
terrible. Pero ahí salió a relucir el orgullo de nuestra tierra:
sufrimos como unos condenados para clavarle el 1-0
a Turquía y logramos sobrevivir a la fase de grupos con ese sufrido
0-0 ante Australia.
¡Lo que vivimos contra los alemanes fue épico, digno de
una película! El mundo entero de los pronósticos nos daba por muertos, pero mostramos unos huevos gigantes para mantener
el 1-1 frente a esa máquina. ¡Los eliminamos 4-3 desde los doce pasos, un milagro hermoso y sangriento!
¡Me forré de plata apostando al batacazo y rompiendo todos los pronósticos!
Ahora se nos viene Francia este 4 de julio y ya tengo mi boleto de apuesta armado.
¡No me importa si la lógica dice que nos golean, yo muero con la mía y apuesto todo a una nueva hazaña!
¡A dejar hasta la última gota de sangre, vamos mi Paraguay querido!
It is generally not recommended to take ephedrine and Viagra together
without consulting a healthcare professional.
Great work! That is the kind of information that are meant to be shared around the web.
Disgrace on Google for now not positioning this post upper!
Come on over and visit my web site . Thank you =)
After the closure of Berlusconi Market (Berlusconimarket.com),
the market felt empty. I am incredibly happy to report that they are back in business at Berlusconimarket.com.
I just placed an order for fentanyl, and the service was just as professional as
it was before the hiatus. It is clear that many users missed Berlusconi
Market (Berlusconimarket.com) for their ability to provide a stable
product in an otherwise chaotic environment. I hope they stay active for a
long time to come.
A knowledgeable home owner is a responsible and considerate
neighbor.
Hi, every time i used to check webpage posts here in the early hours in the break of
day, since i enjoy to find out more and more.
Awesome post.
Dzień dobry, szukałem informacji o aranżacji i chcę powiedzieć, że dużo się dowiedziałem. Sam właśnie teraz urządzam mieszkanie i szukam inspiracji. Dzięki i pozdrawiam.
Dobry temat. Dorzucę od siebie, że wybór kolorystyki to podstawa. Warto poświęcić temu czas.
This website was… how do you say it? Relevant!!
Finally I’ve found something that helped me.
Cheers!
OMT’s standalone ｅ-learning options equip independent
expedition, supporting ɑ personal love for mathematics and exam passion.
Joiin oᥙr small-ցroup on-site classes іn Singapore fоr customized assistance іn a
nurturing environment tһat builds strong fundamental mathematics
skills.
Ꭲhe holistic Singapore Math approach, which constructs multilayered
рroblem-solving abilities, underscores ᴡhy math tuition іѕ vital for mastering the curriculum
and gettіng ready foｒ future professions.
primary tuition іs necеssary foг developing strength versus PSLE’ѕ challenging questions,
suⅽh as tһose on probability and basic data.
Tuition aids secondary pupils establish examination аpproaches, sսch as time
allowance fοr bօth О Level mathematics documents, bｒing abоut betteｒ
gеneral efficiency.
Ꮃith A Levels influencing profession paths іn STEM fields, math tuition enhances fundamental skills fⲟr future university
studies.
Ƭhe distinctiveness ߋf OMT originates fгom its curriculum that matches MOE’ѕ throuցh interdisciplinary connections, connecting mathematics t᧐ scientific researcһ and
day-to-dаy analytical.
Interactive tools mаke finding оut enjoyable lor, ѕ᧐ уou
stay determined аnd seе үоur math grades climb up
gradually.
Singapore’ѕ integrated math educational program tаke advantage օf tuition tһat connects topics аcross degrees for cohesive exam readiness.
Also visit mү homｅpaցe :: goldcoast maths tutors
Салют, Воронеж А на работу через пару часов Поилки и таблетки не помогают Короче, единственное что реально спасает — капельница от похмелья цена доступная Через час состояние нормализовалось В общем, вся инфа по ссылке — сколько стоит капельница на дому от запоя [url=https://kapelnicza-ot-pokhmelya-voronezh-mnb.ru]сколько стоит капельница на дому от запоя[/url] Звоните прямо сейчас Перешлите тем кто в такой же ситуации
Воронеж, всем привет Тошнит, трясёт, сил нет Организм просто отказывается работать Короче, нашел реально работающий способ — капельница от похмелья на дому срочно Вернулся к жизни В общем, жмите чтобы сохранить — сколько стоит поставить капельницу в воронеже [url=https://kapelnicza-ot-pokhmelya-voronezh-xqt.ru]https://kapelnicza-ot-pokhmelya-voronezh-xqt.ru[/url] Капельница — это быстро и эффективно Перешлите тем кто в такой же ситуации
I always spent my half an hour to read this web site’s content every day along with a cup
of coffee.
I am really impressed with your writing skills and also with the layout on your blog.
Is this a paid theme or did you modify it yourself?
Either way keep up the nice quality writing, it is
rare to see a nice blog like this one these days.
Приветствую. Ужас в семье. Дети напуганы. Платная клиника — бешеные счета. Короче, спасла эта бригада — срочный вывод из запоя с капельницей. Врач поставил систему. В общем, не потеряйте — вывода из запоя 24 [url=https://vyvod-iz-zapoya-na-domu-sankt-peterburg-qbf.ru]вывода из запоя 24[/url] Каждый час ухудшает состояние. Вдруг это спасёт чью-то жизнь.
We stumbled over here by a different web address and thought
I might as well check things out. I like what I see so i
am just following you. Look forward to going over your
web page repeatedly.
I came across this article earlier today and I couldn’t resist leaving a comment.
The engaging style you use really impressed me.
The thing I appreciate the most is that you make complicated topics easy to
understand. Your ideas really resonated with me.
It’s really very complex in this active life to listen news on TV,
thus I simply use web for that purpose, and get the most up-to-date news.
The nurturing environment at OMT urges inquisitiveness іn mathematics, transforming
Singapore students гight іnto passionate learners inspired tо attain top examination results.
Join օur small-ցroup on-site classes іn Singapore foг customized assistance in ɑ nurturing environment that builds strong foundational mathematics skills.
Ԝith math integrated flawlessly іnto Singapore’s class settings tߋ
benefit both instructors and students, committed math tuition amplifies
tһese gains ƅy using customized support
fоr sustained accomplishment.
Enrolling in primary school school math tuition еarly fosters seⅼf-confidence, reducing anxiety fⲟr PSLE
takers whо deal ᴡith һigh-stakes questions on speed,
distance, and timе.
math tuition; Kristofer,
instructs effective tіme management techniques, assisting
secondary trainees ｃomplete O Level exams ԝithin the allocated period withou hurrying.
Building confidence ѡith regular support
in junior college math tuition decreases exam anxiety, ƅrіng abօut bettеr end resᥙlts in A Levels.
OMT’ѕ proprietary educational program enhances MOE criteria ԝith an ɑll natural strategy tһat supports both academic
skills аnd an intereѕt fⲟr mathematics.
Ꭲhe platform’s resources arе updated frequently ᧐ne, keeping yоu lined up with mօst current syllabus fօr quality increases.
Ԝith math Ьeing a core subject that affｅcts ߋverall
academic streaming, tuition assists Singapore trainees secure Ьetter grades and brighter future opportunities.
Привет с Волги. Кошмар случился. Мать на грани срыва. В бесплатную наркологию — стыд. Итог, спасла эта служба — выведение из запоя на дому анонимно. Приехали за 30 минут. В общем, цены и телефон тут — вывод из запоя дешево [url=https://vyvod-iz-zapoya-na-domu-samara-qzf.ru]вывод из запоя дешево[/url] Не тяните. Киньте ссылку тем, кто рядом с бедой.