Usually, when I'm on a project with a tight deadline, it's time-consuming to troubleshoot the problem.
Yes, Z-Depth was an extra step, but it was a fast solution since I could not find a fast and intuitive one to control alpha.
Actually, it was very useful for adjustments in post.
I also hope the State Node bugs are fixed soon.

BTW, while working on this project, I really missed the "bypass node" feature in the material node editor. Most node-based apps have this feature.
Having a "bypass node" or "pass-through" switch on nodes would be a great feature, and I requested it long time ago but still no sign that it could happen.
Can you have some influence on dev team regarding that

Thank you.

Hi Dr.Sassi,
Thank you for the suggested solution. This could work as a temp solution.
I managed to solve my problem by rendering the Z-depth pass and using it as additional alpha.

Hello,
I made a distance from the camera setup in RS material to control the object's opacity with respect to distance from the camera.
The setup is state node (raylength) connected to change range (controlling the depth) node and ramp node is at the end.
My setup works with color, but does not affect opacity, objects alpha is full white throughout depth.
The simplified scene is attached.

Distance_Opacity.c4d

What am I doing wrong?
Thank you.

Best regards,

ZG

Thank you, Dr. Sassi.
I had no time to investigate since there was a deadline to pre-render the scene, so I used C4D 2024 to render it as it was.
The rig was made 2-3 years ago by another person, so I had no idea how to fix it.
Anyway, I got the answers from the devs on how to fix it:

"We fixed that the "Rest Hold" does not work in <=2025.1.
It just does nothing and was always like 0.0.
With that fixed the rest hold actually holds and 0.5 is a lot.
Lowing that to 0.0 will give the old result that you previoulsy got with it being broken."

Hello,
I got to prerender (new logos/textures, etc.) some scenes I worked on earlier this year.
When rendering, I noticed that Spline Dynamics does not work in newer versions of C4D.
Here is the info screengrab of the last version os the scene that worked/rendered OK:

Luckily, I have the 2024 version installed and a simplified scene (I deleted all from the scene except one of the problematic characters), and here Spline Dynamics works OK.

Here is the simplified scene for inspection of the problem:

TENTICLES.c4d

Notice the teniticles movement, they are dynamic in 2024 and rigid in newer versions of C4D:

Here is the video preview of how character tentacles should move:

https://youtu.be/0gE5SDUVC34

Any idea how to make it work in newer versions of C4D?
Thank you.

Best regards,

ZG

Hello,
I'm trying to make some melting cheese with a volume builder/mesher (simplified scene attached), and I'm having an issue with texturing.
When applying some noise to the bump, of course, it does not stick to the surface since every frame is a different mesh with no UVs (you can see mp4 demo of the problem on the link below):

https://www.dropbox.com/scl/fi/sd12rdtbmsoylz7lapens/test_Sir.mp4?rlkey=0ugbt05tsuk9zu4llx4ze11tu&dl=0

Any idea how to approach this kind of problem?
I know there is some sort of reference space in the tri-planar node and RS obj tag, but I did not figure out how to use it.
Thank you.

SIR.c4d

Hello,
I'm wondering if there is a way to render an exact background solid color for scenes that for example use GOBO light to light the products and floor around those products.

It's somewhat easy if I use just the dome light, enter a solid color value in the camera background, and use a shadow cache on the floor.

Render with Dome light and shadow cacher
https://ibb.co/nN09QX18

When I use RS material on the floor it caches diffuse and defined color is different.
Render with GOBO light and RS material on the floor
https://ibb.co/dwg3fMqW

If I use shadow cacher on the floor I loose GOBO light on the floor.
Render with GOBO light and Shadow Cacher material on the floor
https://ibb.co/DP1bRD16

One way is to play with floor edges opacity, but wondering is there another way to get exact same defined color on the floor and background?
Thank you.

Link to example C4D Scene (for some reason can't upload scene or 720p images to this post):
https://www.dropbox.com/scl/fi/ylhzlsaj6b8i224njib20/solid_color_test.c4d?rlkey=y5v44ovbl6pch488gr087rte4&dl=0

Joke aside, thank you guys for putting so much effort, covering and helping in every aspect od C4D/RS.

All the best!

@Dr-Sassi said in [Help] Simulation Scene Settings & Point Density:

The Part "17" was never recorded.

Do you sleep peacefully Athanasios Pozantzis!?

Hello,
This lesson ends with "in the next video..." but there is no next video in this series.