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このレッスンでは、ワイングラスを粉砕、時間を遅らせ、大きなスプラッシュを保持します。このエフェクトには、グラス破砕の RBD シミュレーションとワインの流体シミュレーションの両方が含まれます。 ここではダイナミクスネットワークを設定し、シミュレーションを出力する方法を学習します。 VFX ショットには、様々な種類のダイナミクスソルバを組み合わせることが多く、Houdini のダイナミクスネットワークは、これら様々なソルバを統合し、結果を達成できるように設計されています。

また、リタイムノードを使用して、最も爆発的な瞬間にシミュレーションの速度を落としから、逆再生して開始点に戻ります。 次に、シミュレーションを Solaris/LOPs に移し、ライトとカメラを設定してから、Karma レンダラによってショットをレンダリングします。

このレッスンへのリサーチは Michael Buckley によって行われました。



Robert Magee is a Senior Product Marketing Manager at SideFX who has been working with Houdini for over 15 years. He has created lots of learning material and demos designed to help artists understand how going procedural with Houdini can benefit their work.

More from Robert Magee


  • Manuel Kotulla 3 ヶ月 前  | 

    Straight to the point and helpfull, thank you!

  • SerjKirchano 2 ヶ月, 3 週間 前  | 

    awesome course, thanks!

  • johnchen 2 ヶ月, 3 週間 前  | 

    Hi Robert, thank you for recording,
    could you reupload the project files? they are empty.

  • rmagee 2 ヶ月, 3 週間 前  | 

    The only file is in the TEX folder - otherwise you will build the project from scratch

  • WalkBoat 2 ヶ月, 3 週間 前  | 

    Hi!Thanks for the tutorial. I have a question.
    Is the scene unit in meters? So the glass is about six meters high? Does it need to be made in real actual size, and does size and proportion matter?

  • rmagee 2 ヶ月, 3 週間 前  | 

    Yes it would be more accurate if built to scale. Since this effect is designed to be a bit exaggerated, we could tweak parameters to get the look we wanted without worrying about scale.

  • sICFX 2 ヶ月, 3 週間 前  | 

    Hey loved it, made it, check out my version

    • sICFX 2 ヶ月, 3 週間 前  | 

      No links eh sidefx? check this out, dribbble-DOT-com-SLASH-shots-SLASH-15118866

  • JordiFernandez 2 ヶ月, 2 週間 前  | 

    Hi Robert,

    I enjoyed very much the tutorial, thanks so much, ideal for a newbie as me.

    What I don't get is the bullet in the render, I redid the tutorial from scratch but I don't find the issue. I thought could be a problem with the position information being in the geo node so I tried with a transform node but the same result. It's frustrating as the result of the render is fantastic but the bullet missing is hurting me as I can't see what I'm doing wrong.

    Thanks and kind regards,

  • rmagee 2 ヶ月, 2 週間 前  | 

    The bullet must have been there for the sim - did you set up the retime node properly on it? It should only be visible for a few frames then it is out of frame then based on the lesson we remove the return of the bullet in the retime node so it is a one way trip for the bullet - if you want the bullet to come back then don't delete the end keyframes.

  • JordiFernandez 2 ヶ月, 2 週間 前  | 

    Thanks Robert,

    Yes, the retime is correct. In the solaris stage I can see the bullet on the floor for the 5 first frames and then it disappears, it should be visible on frame 6 at Y5 just an instant but it's not there. And it's there in the Houdini sim.

    In case you are so kind and I'm not enjoying you I can enclose the hip for your check?

    Thanks so much!

  • JordiFernandez 2 ヶ月, 2 週間 前  | 

    In fact in the example of sCIFX you can see the bullet also is not correct

  • VnhHiu 2 ヶ月, 1 週間 前  | 

    Sir, can you reupload the project files as they're all empty? btw thank you so much for the knowledge.

    • VnhHiu 2 ヶ月, 1 週間 前  | 

      sorry for the inconvenience. I've just found a file...

  • jfcdr41695 2 ヶ月, 1 週間 前  | 

    where are the project files..can someone guide me??

  • rmagee 2 ヶ月, 1 週間 前  | 

    There is a project files button near the top - there is only one file in the tex directory which you use for tracing - the other directories just comprise a typical project directory structure - you will learn how to "set" this directory as the project directory in the lesson.

  • jfcdr41695 2 ヶ月, 1 週間 前  | 

    Im sorry Robert... I am not able to find the button..Please help me

  • jfcdr41695 2 ヶ月, 1 週間 前  | 

    Ive got them Robert.. Thank you!

  • rmagee 2 ヶ月, 1 週間 前  | 

    Glad you found them.

  • Ferdose01 2 ヶ月 前  | 

    Thank's Robert. awesome tutorial.
    I'd like to ask something. Is there a way to modify the collision that comes from the RBD into the Flip solver? I can't find the way to call the RBDs inside a sopsolver to add a peak so the liquid doesn't drip throw the cracks.

    Thanks Again

  • thatjmax 1 ヶ月, 1 週間 前  | 

    Has anyone else had issues where the bullet seems to collide with something before it actually reaches the glass?

    • thatjmax 1 ヶ月, 1 週間 前  | 

      I think I got it resolved. A reddit member had me lower the substeps on the RBD solver within AutoDopNetwork and it looks like it's working now.

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