My cached animation is weird
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I'm using a Basic Emitter > Cloner > Rigid Body. When I preview the animation just by playing from the timeline, it all appears correct. But when I cache the object, from the Rigid Body tag (but I also tried from Particle Group) and at that point, after caching it all looks super weird. The balls move with glitches and are not smooth.
Can you please help?
https://drive.google.com/file/d/1gXekBc6zd0DNZNz_n27clkIaSFeVcj28/view?usp=sharing
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Hi shoot-laugh,
Perhaps you need to switch something off after caching, which overwrites or influences the movement. Example: Do you have an Attractor working? To not ask endlessly and waste your time, I like to explore a project file instead.
As you wrote, they do not move smooth, what I need is a project file. Leave the cache out, and anything that is not part of the problem, so the file is below 1MB. If larger, please use Google (WeTransfer, Dropbox, or Adobe and Apple cloud services are fine too, others I don't touch).
All the best
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Hello Dr.Sassi
here you can find the project file.
https://drive.google.com/file/d/1CTXSnvfQRP-QpBBvmkHRrmKQkkKznKrE/view?usp=sharing
And no, I have not attractors or other forces in the scene. I have checked whether there is some other element disturbin the sim, but I can't find any. I'm not the most expert in particles, so I may be missing something
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Hi shoot-laugh,
Thank you for the file.
The particles deliver only at the first frame a position, then the Rigid Body takes over. When I replace the particle source with a simple Spline that has nine vertices, things are stable. See file. My problem-solving strategy was to replace with each exploration one part. I even set the top and bottom of the "Collision Ball" into more polygons to see if the N-Gon creates problems. I will share two files as the changes might be otherwise a long list, often with no stable result. The two files, with different information flows, are both stable.
Observation
Yes, I have noticed that randomly, some clones disappear. However, that is not a reproducible situation, as each new cache is different.I have no answer for why the particles deliver a problem compared to the Spline I have used. I have set up the Particles with the same size, cached them first, then all at once, with random changes. Again, there should be zero influence from it, except that a particle disappears. I leave that to tech support to pinpoint.
The preview file is done with a low sample rate, hence the noise and flicker, but the spheres are stable.
Here are two files in one archive.
https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20260917_CV4_2026_drs_25_SIeb-MGeb.zip
Please note that reversing the "Collision Ball's" normals and setting the Regid gave me no problems.
The second file is the one with the Spline.I hope one or the other will work for you.
All the best
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Many thanks for your incredible response @Dr-Sassi
Sadly, I have to admit that I'm even more confused after the response, of course not because of your explanation skills, rather because of my poor understanding of the dynamic system in C4D.
Firstly, I am quite unsure what the spline does exactly and how the movement happens. In any case, the animation doesn't match my needs as I'm looking to recreate a more gacha ball kind of animation.
I also saw the other file with the emitter, which it would be much better for me and I would like to ask what you changed there as I can't see any difference in terms of settings, while having a better result. However, I am sure that my colleagues will require the animation to be moving a bit more, rather than a fast and dry motion. So I'm afraid I will anyway have to retouch that. Hence, how could I improve the situation?
I mean, what could I do to improve the scene? I have tried to change lots of settings, yet the situation remains the same
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Thank you for the question, shoot-lough,
The particles were used in the Cloner. They produced nine clones. As with all Clones who are used with a Ridgid Body, they follow what the Dynamic creates in terms of motion. Otherwise, the results of the Dynamic wouldn't be a dynamic one. Like keeping the cake and eating it, one has to decide. As long as the Force>Position/Rotation is on 0% in the Rigid Body settings, the Clones follow what their Dynamic will create. The idea of intersecting objects violates a natural idea of spheres, for example, given that Colliding is part of the dynamics. Here, the Spheres jump away from each other as the initial position of the Particles is too small. The whole motion in your scene is NOT based on particles at all. The particles, again, provide only a starting position and provide the amount. The problem you mentioned in the first post above is a result of some information not being available at one point. Why that is, I can't find out, and it is a problem for Tech Support. Your setup surely didn't lead to that.
So, problem solving by excluding parts, meaning replacing them. One by One. I was lucky to start with the particles, and used the points of a spline (set to nine) as a starting source for the Cloner. The Spline was used as it provides a configuration that is not a default Cloner 9Linear, Radial, etc).
The movement of the Sphere needs some forces to work on the Sphere; otherwise, they settle like real spheres in a bowl. The first question here is to ask, what motion do you want to have? It is an Art Direction process here, whereby the term is often seen as creating an aesthetic, but that is secondary; the primary idea of Art Direction is to direct the audience's impression and hopefully emotions seeing it, while leaving the open-minded with a feeling. When this is clear, the setup of movement is done. Since they would settle in, what is the expression, what is the message? Without that, it is just creating perhaps a wow effect with no real impact.
Let me know what the result needs to be, and then I will try to find suggestions.
About feeling knowledge gaps. In my research about learning over the years, it has become clear, we all have them. But how to know what one doesn't know? Of course, there is constant learning and hoping that one day something new will be in the beginner trainer. Focusing on tips and tricks learning (or MicroLearning as more Buzz Word Jockeys call it) has a huge potential to increase the amount of such gaps even more. My impression is that here is one reason for the Impostersyndrome. Since we talk about Adult training (vs K-12), we don't define what to learn; we can only offer content.
However, the idea of closing gaps can be stated with Mind Mapping apps.My main tech is typically watching and reading anything, even on a beginner level, as mastering one part of the app doesn't magically elevate the other parts to master level, and even if we get there, the next update might take things away. Most ask for new features, but it is also important to know them and get them integrated in all options to stay creative and in the "Zone or Flow", to name a favorable state to create in. How easy it is to keep up is a clear quality indicator of any company.
Cheers
