Log into your account to keep track of your progress. You can work through the lessons without logging in but your progress will be lost when you refresh the page.
ビジュアルエフェクトが楽しい理由の 1 つは、現実には何も破壊せずに、さまざまなものを爆破できることです。 このレッスンでは、パーティクルの火花を使用して導火線に火を付け、カートゥーンの爆弾を爆発させます。 爆弾にはリジッドボディダイナミクス、火と煙には Pyro FX を使用します。このレッスンでは、さまざまなシェルフツールやネットワークノードを使用して、ダイナミックシミュレーションをセットアップする方法を学びます.
作成するショットを完全に理解するために、すべての要素をゼロから作成して、エフェクトをシミュレートします。 Houdini シーンのさまざまなコンテキストで、シミュレーションノードがどう機能するかを理解しやすくなるはずです。最後に、Karma レンダラを使用してショットをレンダリングします。
Research for this lesson by Michael Buckley
Houdini 19.5 用の Houdini Foundations のすべての章は PDF としてダウンロードすることも印刷書籍として購入することも可能です。この本は 224ページ、9章で構成され、Houdini への第一歩を踏み出すのに最適です。
このレッスンの各章の簡単な概要で、このチュートリアル集で学習するステップをご覧ください。
爆弾のジオメトリを作成するには、プリミティブの球から始め、上部を開口部に変更します。
これにはポリゴンの押し出しとベベルを使用して、最終形状に必要なジオメトリを定義します。
レッスンの後半で、この爆弾を砕きます。
導火線の作成は、爆弾の上部から伸びる Bezier カーブから始めます。地面にカーブをくねらせて、長い導火線を作成します。
カーブの方向を逆にして導火線のアニメーションの準備をしてから、Polywire ノードを追加して導火線に厚みを与えます。
導火線のアニメーションでは、Carve ノードを使用して、時間の経過とともにカーブの長さが変化するようにします。
導火線に丸いキャップを追加して、すすと火花を放出するのに使用します。カーブ上に接線をセットアップして、
キャップが適切に動くようにします。次に、NULL オブジェクトをいくつか追加して、パーティクルの放出に使用するキャップを簡単にエクスポートできるようにします。
このショットをさらに発展させていくうえで、最終ショットをフレーミングするカメラをセットアップしておくと便利です。
このカメラリグを構築するには、Null オブジェクトをカーブに拘束してから、Aim 拘束を使用してカメラを Null オブジェクトに向けます。
カメラが導火線の終端に追従するようになるため、パーティクルの放出を評価しやすくなります。
すすのトレイルを作成するには、キャップを使用してパーティクルトレイルを放出します。これらのポイントを適切に放出する方法と、
重力などのフォースを追加してパーティクルの動きを制御する方法を学びます。また、衝突をセットアップして、パーティクルが地面にぶつかったり、爆弾のサーフェスを滑り落ちるようにする方法も学びます。
火花を作成するには、すすのパーティクルオブジェクトをコピーして、火花を生成する新しいオブジェクトとなるように設定を変更します。
火花のパーティクルの方が寿命が短く、活発になるようにします。Spark Trail ノードを使用すると、希望通りのルックの火花をショットに追加することができます。このノードのパラメータを調整することで、目的のルックを実現します。
爆弾のジオメトリに必要なのは、リジッドボディダイナミクスシミュレーションです。ジオメトリを粉砕してから、アトリビュートを追加して爆発を作成します。その後、移動するパーツの速度を制御して、芸術的な観点でルックを調整します。シミュレーションの準備が整ったら、ジオメトリをキャッシュして、効率的に PyroFX の段階に進めるようにします。
爆弾の爆発には、火の玉が伴います。GPU で動作する Simple Fireball から始め、変更を加えてショットにふさわしいルックを作成します。
また、爆発する爆弾のパーツを組み込んで、PyroFX ボリュームを押したり、作用したり、さらに面白い見た目にすることもできます。
レンダリング向けにショットをセットアップするには、USD ファイルにジオメトリをエクスポートして、Solaris コンテキストで参照できる
ようにする必要があります。ジオメトリを直接インポートすることもできますが、USD としてキャッシュ化すると、シーケンスを固定して、 Solaris でライティングとレンダリングに集中できます。これらのオブジェクトの一部では、エクスポートする前に UV を追加して、テクスチャリングに備えます。
すべての USD ファイルを Solaris で参照して、オブジェクトレベルからカメラをインポートする方法を学びます。マテリアルをすべての要素に適用し、Karma を使用してレンダリングを開始して、結果を評価します。また、キーライトとレンダリング設定を準備して、ショットの最終ルックを探求します。
ショットを完成させるには、火の玉の USD ファイルを追加して、適切なマテリアルを割り当てる必要があります。次に、もう 1 つカメラをセットアップして爆発の広角ショットを作成したら、2 つのシーケンスをレンダリングして最終的なシーケンスに仕上げます。その後、 Mplay 画像ビューアを使用して結果をプレビューします。
CREATED BY
コメント
sdugaro 2 年, 10 ヶ月 前 |
Nice one! Thanks.
PolyMarvels 2 年, 10 ヶ月 前 |
Robert, great series as always, thank you.
SerjKirchano 2 年, 9 ヶ月 前 |
Thanks! Clarifies a lot of details indeed
bharath453 2 年, 8 ヶ月 前 |
Hi, i need some help, if i click polybevel in houdini, it shows fatal error and get crash. What is the solution for this problem
jjin10688 1 年, 11 ヶ月 前 |
It might be because your pc doesn't use high detail if it is not a high-end PC.
spyco59 2 年, 7 ヶ月 前 |
Thanks Robert! Really appreciate having a PDF file to follow along! :)
luoyuepo 2 年, 6 ヶ月 前 |
And there is something wrong with the PDF file.
On the Page 21, paragraph 2. The expression should be
“ Set the Prune parameter to
$F >200. After the expoding_bomb node, add another Prune LOP.
Set the Prune parameter to $F <199."
I did just just like the PDF said,and the bomb became invisible all along in the timeline.
Hope you can fix this soon.And thank you for all the nice tutorials!
zengyuanelsie1 2 年 前 |
I had the same problem and solved it with this:
prune>primitive pattern>input last modified primitives
JoeRan 2 年 前 |
i had the same problem! thank you!
AbhishekDhiman 1 年, 9 ヶ月 前 |
input last modified primitives
thank you
HArrCorr 1 年, 5 ヶ月 前 |
thx, had the same problem,
dimitridev 2 年, 5 ヶ月 前 |
thank you, great lesson!
khyathikkrishna1223 2 年, 5 ヶ月 前 |
it was a very good one, learned a lot. thanks
dhuiting 2 年, 1 ヶ月 前 |
Hi! I noticed the orient along curve works while we are on the construction plane (from 0-142) but at frame 143 when the cap starts rising up toward the bomb, it gets slightly off from the poly wire. It's close but not exactly on. Why is this?
JoeRan 2 年 前 |
Unfortunately I'm stuck in the last step (number 11 - Render pyro fx)
Despite having 40 GB of RAM on the PC, the computer does not hold up!
Crash at the exact moment I enter the pyro effect usd.
jjin10688 1 年, 11 ヶ月 前 |
simple fire ball is not working help
rmagee 1 年, 11 ヶ月 前 |
Did you change the start frame to 200 and the Frame Range to 200-240? - Part 8 steps 1 and 2
Dohesh 1 年, 10 ヶ月 前 |
my file is exporting in usdnc how can i save in USD
shung1021 1 年, 10 ヶ月 前 |
when you try to bring in the USD in the reference node, there should be a drop down menu on the lower right hand corner that says "*.usd, *usda.... etc.," change that to just "*" and you should be able to see your USDNC files
Dohesh 1 年, 10 ヶ月 前 |
i also tried this method and its showing usdnc files but there is 1 error and the error is
"Unable to find layer file: 1/Houdini/Destructtion"
AbhishekDhiman 1 年, 9 ヶ月 前 |
Thank you
shung1021 1 年, 10 ヶ月 前 |
i assume the NC in USDNC simply means Non Commercial
shung1021 1 年, 10 ヶ月 前 |
Thank you so much for this tutorial Robert! This tutorial helped me so much in getting started in Houdini!
jc.kumar.1002 1 年, 10 ヶ月 前 |
can you please help me with this?
i am not finding Attribute adjust vector
fantasio 1 年, 8 ヶ月 前 |
Hi, I got an error when selecting Simple Fracture for the bomb. The network nodes are created but there's an error saying:
"Error: Invalid source/obj/bomb_geo_fracture/rbdmaterialfracture/init_opencl"
Anybody has an idea what's happening?
Thanks a lot
fantasio 1 年, 8 ヶ月 前 |
I've change the Preferences of OpenCL Device from GPU to CPU and it seems to work.
taku5842 1 年, 7 ヶ月 前 |
Hi, I have a question.
In part 6, the spark effect is output in the opposite direction (traveling direction), is there a solution?
natrianvfx 1 年, 7 ヶ月 前 |
Great tutorial. I had a lot of fun following this videos. Fx destruction is really fun!
Protozoaire 1 年, 7 ヶ月 前 |
Where are the tutorial scenes please?
rmagee 1 年, 7 ヶ月 前 |
This lesson is designed to be built from scratch.
enzo.nhr 1 年, 6 ヶ月 前 |
My popnet create particules in the wrong direction, as if the particules were created inside the sphere, not outside, which cause the soot trail to go the opposite direction it supposed to be :(
Kucheryat 1 年, 5 ヶ月 前 |
you should try change scale-time in popnet node to about 0.20. that helped me
Crazy_Chintu 1 年, 2 ヶ月 前 |
thank you.
It helped.....
LukeP 1 年, 6 ヶ月 前 |
Overall comments about this book and this training. I think it's a good example of how things should not be written and examplifies problems with Houdini documentation. For me at least. I'm sure others' opinion will be different. That doesn't mean that it wasn't useful. You can still learn Houdini from it, but it's supposed to be a Foundations book, right? Meaning that the focus should be on explaining core concepts. Something that MOEEN SAYED does really really well. Lets take tutorials in this book. There's very little explaination. Do this, set this, type this, without explainations is not helpful. Neither is going from basic concepts to some advanced ones. Again, perfect example of what needs to change wrt to Houdini documentation.
rmagee 1 年, 6 ヶ月 前 |
Thanks for the feedback. The goal of this book/tutorial series was to help artists build muscle memory and learn how to accomplish day-to-day tasks as they get through their first few projects in Houdini - this will lead to questions that they can begin to explore using other learning materials. In fact, we commission Mooen to make tutorials for us to add that other layer. So in the case of this book, Foundation means getting comfortable with the software and touch as much of it as possible rather than diving into core concepts.
Kucheryat 1 年, 5 ヶ月 前 |
Hi, i need help on step 5. Problem started after adding attribute transfer. Particles are not going in direction of the fuse. All steps before are working correctly. What should i do?
Kucheryat 1 年, 5 ヶ月 前 |
oh, sorry, i found the problem
Peps 1 年, 3 ヶ月 前 |
hola buen dia, tengo un problema en la leccion 11
dice asi
576 fatal error Segmentacion faul crash log saved to
C /Users/Usuario/Appdata/ Local/ Temp /houdini_temp/crash.destruction_11a.usuario_576_log.txt
alguien podria ayudarme, gracias
dhruvthole2609 1 年, 2 ヶ月 前 |
Hi, I need help. When I used simple Fracture, the bomb just rolls over the ground instead of blasting.
Kaylinnb 4 ヶ月 前 |
I am having tthe same issue. Have you had any luck fixing it?
Kaylinnb 4 ヶ月 前 |
I've managed to fix it! In the rbdmaterialfracture node, under contraints, either delete the glue constraint name, or lower the primary strength
lowrid3r7 1 年, 2 ヶ月 前 |
Hi! I had the same problem. In the rbdmaterialfracture node delete the Glue from Glue Constraint Name.
Fernando_Criativo3d 11 ヶ月 前 |
Thank you!
planimation 1 年, 2 ヶ月 前 |
On Video 5) at 6:20 I put in the code $F >199 but my partials don't die after frame 199 anyone know what the issue is, cheers!
planimation 1 年, 2 ヶ月 前 |
Solve it! i forgot to click Enable in the V Expression
planimation 1 年, 2 ヶ月 前 |
anyone know why my sparks are going through the floor? video 06?
planimation 1 年, 2 ヶ月 前 |
ah found it, it's because I name my attrbadjustfloat1 to LIFE to life.
planimation 1 年, 1 ヶ月 前 |
currently on video 11, around 3:05 once a add the prune node i put $F>200 but it doesn't work, is this because i'm using a UK keyboard not sure how to fix this please help cheers!
planimation 1 年, 1 ヶ月 前 |
so i solve this by creating the node again
planimation 1 年, 1 ヶ月 前 |
I got a new problem, currently on the last video and I don't see the pyro render only the dust.... what do you think happen?
Arcelius 2 ヶ月, 1 週間 前 |
Hello! I found a solution to this! After trying lots of different things I found that using the "Combined_Pyro_Shaders" instead of the "Pyro_shader" makes the shader appear in the Karma viewport. I believe that the "Export Relative Path" might still be a neccessary option when selecting the material but please make sure to REASSIGN the combined pyro shader to the pryo fx inside the "assignmaterial" node under our material library. I hope this helps!
ktjk1 1 年, 1 ヶ月 前 |
I've been working my way through the Houdini basics course, but I'm stuck. When I finally render, the material library node is applying a pyro shader to the material VOP input field, but all other geomatry's materials disappear and I can't recover them. I've followed this process at least 10 times and studied the information, but I can't get it to work. Houdini is a good program, yes, but it's too unstable and finicky. It's a program that doesn't give me the same result even if I follow it exactly without missing a single moment. I don't think it's a good program in that sense. I need to find another good program.
Harry__243 1 年, 1 ヶ月 前 |
I´ve a question. Working on Part 10, my Prune Notes don´t work (both). Does anyone has an Idea? I killed my presets, using the default but the Problem is still there.
My Workaround, using the time-expression directly in the Primitive Count of the Reference Note works fine and delivers the expected results... but this doesn´t fix my prune issue. Does anyone has an idea (using Houdini 20.0.590 on Windows).
Harry__243 1 年, 1 ヶ月 前 |
I´ve found the issue... the prune note defaults have been changed. In Target Primitives under Primitive Pattern I had to choose `lopinputprims(' . ' , 0)`
m.colonnelli 1 年, 1 ヶ月 前 |
Fantastic tutorial. At the moment, I only have one problem that I don't know how to solve: when I switch to render view (Karma), all materials look good except for the "Soot" where the particles turn into very large spheres. Do you know how I can solve it?
carlosvega 1 年, 1 ヶ月 前 |
Hi, i have a problem, i'm in the part 7, and when apply the simple fracture and set up the fracture solver, delete the glue, and run the simulation, the bomb rolls instead of break, like all the pieces are glued. Can anyone know how to solve it?
MTU1500 11 ヶ月, 2 週間 前 |
I had the same problem. I solved it to put the strenght on 0 in Advanced ==> Glue ==> strength.
pulppixel 4 ヶ月, 2 週間 前 |
Thanks!!!!
Fernando_Criativo3d 11 ヶ月 前 |
Dont know why the the end my particles are going inside the bomb not outside the bomb.
Fernando_Criativo3d 11 ヶ月 前 |
I found a way to overcome this problem, in SPARKS, in attributadjustvector2 set the "preprocess" to Reverse Direction. Also set constant in Y to 0,75. Suits more for me.
ArmTM 2 週間, 2 日 前 |
thanks bro it helped me
hiroyasuo 10 ヶ月, 3 週間 前 |
I'm trying to create the rbd explosion, but instead of shattering, my bomb geometry is just rolling? Any ideas as to why? I've following the instructions to a T
sheepplays 10 ヶ月, 2 週間 前 |
By Fireball isn't interacting with the bomb fracture. and I noticed there is no longer the "No Promotion" selection on detail attributes
sheepplays 10 ヶ月, 2 週間 前 |
Nevermind found out my peak somehow uncoupled from attribute adjust vector.
Fernando_Criativo3d 10 ヶ月, 2 週間 前 |
Hi I'm stuck whem I'm going to merge the references.....dont know why when I merge the fuse it is bellow the zero Y axe....in the obj level is correct it is only happeninh when I merge the reference. thank you
rjorr04 7 ヶ月 前 |
If you check the fuse on an object level in build, you probably had the y and z parameters adjusted. So what I did was copy those parameters, and then put them into a transform node under the reference node in solaris.
MouseClicker 9 ヶ月 前 |
thanks for this great tutorial! One small good thing to add would be a short explanation why exactly each check box is being enabled to understand what it is doing.
prashanthprabudev 9 ヶ月 前 |
hi while creating a soot trail, particles not following along the curve i mean that cap what we create at the end of the fuse that cap is aligned along the curve so when i play all the cap is emitting those particles in its respective direction. how to solve this.
1. do we want that cap all over the curve or just one cap is suppose to follow that curve.
2. if the several cap along the curve is correct then how to stop all the cap emitting the particle at once
prashanthprabudev 9 ヶ月 前 |
got it found out the mistake i had missed making target point zero, now its working fine!!!!
parakhpushp30 6 ヶ月, 4 週間 前 |
trying to follow the lesson and set up Solaris but getting this error need help
Error
Unable to find layer file: D:/Houdini
parakhpushp30 6 ヶ月, 4 週間 前 |
trying to follow the lesson and set up Solaris but getting this error need help
Error
Unable to find layer file: D:/Houdini
even though i have set to correct path as when switch to geo its all there i can the elements but when switched to Solaris i did same but mine showed this error and no geo is displayed
mbellino 4 ヶ月, 1 週間 前 |
There is an error in Video 7 when you are supposed to save the exploding bomb into a cache file. You need to un-tick "Time Dependent Cache" on the fracture_io tab. If you don't do that the cache will save a single file for each frame.
mbellino 4 ヶ月, 1 週間 前 |
Actually not. Saving the with "Time Dependent Cache" not selected creates a file that is too small. In the video the cache file is 17.22 MB while the file I produced is only 399 KB so something is wrong.
mbellino 4 ヶ月, 1 週間 前 |
After re-performing the process, it worked fine.
addis_tad 3 ヶ月, 4 週間 前 |
in video 10 after exporting all the .usd when i import the fuse the postion was different from the object level it lowers itself how to fix this . Help please
Pydracor 2 ヶ月, 3 週間 前 |
had this, too. Issue was that I had an offset in "Transform" on obj-level of the fuse_geo-node. Instead reset these values to 0 and go inside the fuse_geo-node. Put there a second transform-node with the offset you had before on the upper level. Export again the .usd of the fuse.
beedz.studio 2 ヶ月, 2 週間 前 |
can i do this on the non-commercial version?
rmagee 2 ヶ月, 2 週間 前 |
Yes
KingGristy 1 ヶ月 前 |
Hi, I'm using apprenttice. Do I still use USD or a different format?
rmagee 1 ヶ月 前 |
Apprentice uses .usdnc
KingGristy 1 ヶ月 前 |
Thanks man, hugely respect you replying! How would I change this? Because my marble project failed to render and export and I think this could the reason.
rmagee 1 ヶ月 前 |
I can't really say without more details - can you wrap up your project directory and post it to the forum in the learning section. Message me and I will take a look.
Robert
Character_animator 2 週間, 5 日 前 |
Hello, Robert! Thanks for the amazing tutorials.
I have completed this lesson, too, and I am very glad that it was with your lesson that I started as a beginner.
Please log in to leave a comment.