CINEVERSITY

Hi vincent.hardy,

Thank you very much. Your initial file had no animation of the spline itself. Hence, I suggested the simpler version with the Tracer (Cloner/Matrix).

Anyway, thank you very much for confirming, and the file. I had already reported it:
https://cineversity.forums.maxon.net/topic/1775/spline-warp-doesn-t-update-with-animation

I'm glad we have at least one way to get it working for you.

Thanks again!

Have a great weekend.

Hi philosophy-chemical,

Thank you for your reply. I'm grateful for your post's professionalism in expressing what needs attention and change.

I can instantly sympathize with this kind of frustration, which might sound like a rubber stamp sentence, but doing that for so long, I had my fair share of those.

Since this is a forum to find out something works or creative solution, perhaps workarounds:

I typically try not to solve something with questions but rather post files suggesting an option.

I'm limited here, as I can't reproduce this, so perhaps tell me, can you manually set a preview? Does it survive the save and open process?

Screenshot 2025-03-21 at 11.03.27 AM.jpg

That would be an alternative, not a solution (at least not in the long run).

Can you see a preview in this file?
CV4_2025_drs_25_FIpr_01.c4d

Thank you for your time

Have a great weekend

Hi Ken,

I'm glad to see you working on another project.

Those things can pull on you, so please let me wish you all the energy I can send to your new work. Please share whatever you like; I'd love to see it.

Based on your initial question, I have put some notes into a little PDF, which I would call a rough draft, and I will expand on it. I hope it can grow enough to become a chapter in a book.
Perhaps it might provide some ideas. This is the first time that I have shared anything like that here.

https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/Photorealism_in_3D_The_Lens_Between_Reality_and_Perception_draft_01.pdf.zip

There are surely some additional chapters needed. I will expand it more. Please note that it is a private little thing, not an official Maxon document. So, if needed, the critique goes in my direction; thank you.

My best wishes for your new project

Hi resort-sand,

Thanks for the reply, and the patience with this problem.

My best wishes

Hi Bart,

Thanks for sharing the reply.

Yes, that is why I asked for files. To see what the whole set is.
My typical workflow here is to recreate the question and answer from that, not from memory or with a long list of questions.

That is a similar problem that sRGB or REC 709 has; all values above 100% are tone-mapped to fit into 100%. A part of the 0-100% is squeezed to enable that.

Typically, why did my sRGB comment come up? Tone Mapping is not the only part; there is a Gamut Compression from ACEScg to sRGB. This means color values are moved. Both create a color shift. (The core reason why people have Logo Colors.)

When both are applied, the changes can be heavy.

Yes, the Open EXR, including the half-float part, should not be affected.

In the ACES documentation, the 32bit/float/channel is the format for any storage and external exchange in AP-0 (the largest colorspace). ACEScg came later and is a format that should be used only internally, but it might show limitations in some cases. Hence, I typically do not use it in my work. But yes, it is widely used, based on many applications that can use the AP-1 colorspace but not the AP-0. I created the graphic for the documentation to show that. Cinema projectors, if newer, can reproduce already REC 2020.
Gamut_ACES_etc .jpg
https://help.maxon.net/r3d/cinema/en-us/#html/Color+Management+-+OCIO+ACES.html
It shows clearly how many green tones, and a stripe between red and blue is excluded in AP-1.

The 16bit/float/channel has limitations, even without the implementation limitations in C4D currently (in dynamic and color) but typically can hold the stops of dynamic that practical cameras have. However, many data-based AOVs need 32bit/float/channel.

As a side note, ACEScg has no Color Space flag (insde the file) requirement based on ACES papers. The ACES itself in 32bit/float/channel has. If open an ACEScg, but sadly also ACES in some external apps, the Color space has to be set manually (not converted!) I wrote to Adobe about that for many years, but it has not been solved completely. However, the result can be different colors.

All the best

Thank you very much, Maxi.

My best wishes for your project!

Thanks for sharing, Dutchbird.

This is interesting,

I have tried all render settings, and the results are on average the same, or checked off – slower. But after a while of running tests, things become more equal again.

Since you get differnt results, it must be based on hard ware configurations.

Thanks for sharing.

Thank you for the reply, resort-sand,

Please let me know how it goes.

All the best

Hi left-fall,

The joints, as mentioned, were a sketch or draft, aka quick 'n' dirty. Yes, that would require more work to make something production-ready.
Yes, the part would need a joint, and IK has dynamics, but I get it: you need something fast.

So, let's try the simplest way, but it takes some steps.

First, a Mesh 'Cage" must be produced. This " cage " must be cached as the soft body.

Now, it can run the detailed object.
With some little support from another deformer, you can increase the visuals of the floor impact.

I left all the parts in the file. The Rose was under the Volume object, to produce the cage.
https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20250317_CV4_2025_drs_25_CArp_11.c4d.zip

All the best

Hi RemoGambacciani,

If you use my setup, then it is pretty much the same (keep length on or off), as I have set up the deformer in that way,

Below is a comparison: Green is mine, and Red is the file I got.

Screenshot 2025-03-17 at 11.18.39 AM.jpg

CV4_2025_drs_25_RSmb_02.c4d

In the Red Version, the line is stretched, resulting in the more pronounced step.

All the best

Hi smckenzie,

Typically this is done with a Mesh Deformer (some called it Cage Deformer). The low-resolution object provides a simplified result, which is then transferred (deformed) to a higher-resolution model.

Another way is shown here:
https://www.youtube.com/live/JvncJjTion8?feature=shared&t=1703

Optimizing the the shape of the colliding "geometry", might also help:
https://cineversity.forums.maxon.net/post/6788

Is this something that would work for you?

All the best

Hi Piotr,

That was two years ago; I wonder why you have to endure this even with the current version; it should be handled by now.
In any case, sorry for your problems. If the company doesn't update their tablet driver, I'm not sure what else to tell. Change the brand perhaps? I swapped out one company here, and since then I am at peace. (But I did not had the one from above)

Please check with tech support, if there is anything that is not based on the Tablet producer to create. Any problems in this way (tech/code-based) must be handled there. Thank you.

https://www.maxon.net/en/support-center

All the best

Hi Zeljko,

Images have a 500-height pixel limit.
I have changed the URL display in your post, as you had them hidden in the text. Please always paste URLs plainly and simply so everyone knows where they go when clicked. Thank you.

Is that the result you like to have?

Screenshot 2025-03-15 at 11.51.04 AM.jpg

Then, merge this file with your scene and turn off the object called Floor.
CV4_2025_drs_25_RSbd_01.c4d

All the best

Thanks for the feedback, Dutchbird.

As I write in a forum, I was detailed here, and the process might not be clear to everyone.

Have a great weekend.

Hi Jakob,

I would say that the Egg is close to the perfect shape of the Sphere and, even in the lowest setting, finds good coverage. Since this might be a point of debate, I would like to point to a case that shows how it works with visible changes.

https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20250315_CV4_2025_drs_25_SIch_01.c4d.zip

Screenshot 2025-03-15 at 10.41.24 AM.jpg

Now, the Documentation needs to be quoted to make the point:
"If set to 0, recessed indentations or recesses or holes will not be included in the collision calculation, but only a single "rubber skin" will be placed around the object…"

The Convex Hull is unlike a Tesselation algorithm that changes with the surface angle, like Adaptive in Spline interpolation.

For example, if you have a hole in the Egg, changes will appear.

https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20250315_CV4_2025_drs_25_SIch_11.c4d.zip

Screenshot 2025-03-15 at 11.27.47 AM.jpg

Have a great weekend

Hi cyrilrueg,

That is not a problem; it is expected and wanted behavior.

The pole defines the orientation of the virtual disc, like the dark green ones mentioned above in the manual.
This disc is the key to solving the IK. Otherwise, the joints would just randomly move around in space.

My suggestion to move it up and down was to learn its influence on the solved IK chain.
The Pole, as mentioned, needs to be placed properly to make things work in a stable way.

Cheers