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Redshift Camera map projection onto clones with Redshift Color User Data problem,
Posted: 26 May 2022 10:08 AM   [ Ignore ]  
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Joined  2022-01-25

Hello I have included a Dropbox link to the C4D file in question.

https://www.dropbox.com/scl/fo/690zubmquj083p7bif9wn/h?dl=0&rlkey=7glrsi0w9avbfntpvqa5a3xvb

I have been trying to project a logo onto clones, I have have the initial setup in the file.

The Cassettes has materials assigned to selections. I can’t figure out how to project with the RS Camera map onto the cassettes over the other materials.

My GOAL is to have a Black logo projected onto the clones over the white labels on the tapes.

In the end I’m looking to attach the logo onto the cassettes like how the logo is baked on the surface of the cans in the cans in the tutorial below.
https://www.youtube.com/watch?v=pI_M0f3VTFc&t=1420s

I have not set this up yet, I’m more concerned of I can get the the logo projecting onto the white labels…

Any suggestion or ideas?

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Posted: 26 May 2022 08:03 PM   [ Ignore ]   [ # 1 ]  
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Hi software,

Thanks for the file, and for using Dropbox.

My idea of Redshift 3D material was so far that speed is the main target, so I always used one Material tag for an object or several when they split based on Polygon selections. I have not used stacked materials for the same surface area. It would require an alpha input of the Material Node (C4D nodes not available in RS nodes!). So, using the RS nodes:

I have searched this morning to see if there is any idea about it anywhere. So far, I have not found one.

The tutorial you have linked works as well with a single material.

Instead of a single object, you could split it and work with UserData to define each part in the UserData with a unique number, then use this to drive a single material.

To have a camera map node in each of your materials and split it based on Polygon selections sounds like more work to me.

As a side note, if you use the Random Effector to produce color, set the Min/Max value to 0-100%; otherwise, it might not work as expected (default is -100% to 100%)

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 27 May 2022 06:01 AM   [ Ignore ]   [ # 2 ]  
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P.S.: After a busy day, sorry for the delay; I found time to set up an example of how to do it all with one material.
You will certainly find many things that can be changed and improved, hence my label: example.
Project File
https://www.amazon.com/clouddrive/share/qC6VaWfBbJuoWMh84wS592qCCBHJHIkuguAztzcvhKG

It uses MoGaph User Data as well Object User Data. In this way, things are easily expandable. I hope that helps.

As in the tutorial you have linked, the next step would be to “bake” the U.V. data to freeze the Camera Mapping, which means that all the other surface qualities of the objects need to be procedural.

Enjoy.

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
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Photography For C4D Artists: 200 Free Tutorials.
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Posted: 27 May 2022 05:05 PM   [ Ignore ]   [ # 3 ]  
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Dr. Sassi
Thank you so much for your time and the file you shared!
C4D nodes are new to me, I usually work in the Red shift shader graph.

I see that in your file you assigned “side Label” number 5 in the user data, and that user data is connected to a shader switch.
Is there a way to make the label more white? I tried changing the shader switch that was piped into the opacity, but that does not work?

Is this possible?

Again thank you for your time and for sharing the file!!

Best.
software.

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Posted: 27 May 2022 05:25 PM   [ Ignore ]   [ # 4 ]  
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Hi software,

Thanks for exploring the setup.

The lazy way would be to use the color correction node in the scene and dial the saturation down. Lazy, because it requires a to be calculated for each pixel.
The lazy way, but with an option to dial in the MoGraph Color: (Screen shot included)
https://www.amazon.com/clouddrive/share/WtoVrZiuE1PO44NBeeYVgAFl8qTyhmoecHxhrgcWZaD

The right way would be, if white (or any fixed color) is the target, to plug in a Color Constant node into the Base Color (instead of using the MoGraph Color corrected data). Lowering the calculation efforts. (Perhaps use the Color Layer options directly.)

This is the RS node system in Cinema 4D design, and yes, it is confusing to have RS3D and C4D look the same, but both node systems serve only a specific “party”. Not nice, I know. However, if you switch to Redshift before you start creating a material, you will get the right node-system, XPresso, or “NEW-C4D” design. I hope that will be streamlined ASAP, as I think that is nothing that gives any advantage to anyone to leave it in that way. Anyway, sorry about the confusion.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 02 June 2022 09:37 AM   [ Ignore ]   [ # 5 ]  
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Dr. Sassi,
Thanks again for sharing your opinion and advice!
The Color Constant node worked perfectly.

Have a wonderful day!

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Posted: 02 June 2022 07:22 PM   [ Ignore ]   [ # 6 ]  
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Thank you very much for the feedback, software!

I’m glad it works for you! grin

Have a wonderful day as well!

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
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Photography For C4D Artists: 200 Free Tutorials.
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Posted: 07 June 2022 05:04 PM   [ Ignore ]   [ # 7 ]  
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Hello Dr.Sassi.

I have one more question, I promise!!
I’m using a Inheritance tag for these clones.

My goal is to apply UVW coordinates to the cassettes so the logo sticks to them, as the cassettes start to stack the stuck-on logo is put together.

I have tied to make the clones editable, (but now there are two sets of clones, one for the Inheritance tag) but it does not work. 

If I wanted to change the RS camera map(logo) to a gold reflective material,  would you use another RS color splitter then another
RS material? OR would you need another RS Material blender?

When you have some time if you could take a look at the file that would be great.
Here is the C4D file with the .png logo
https://www.dropbox.com/sh/mfynohfchh1o8zr/AAA_NrQDJns9-RxQEHBdwrwca?dl=0


Thank you so much!

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Posted: 08 June 2022 05:47 AM   [ Ignore ]   [ # 8 ]  
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Hi software,

Thanks for the file.

To get this Logo frozen, every single object that was a clone before must be a single object with a single UV map, so the file is quite large. (231 * six sub-objects) The file here grew to 1.67 GB!

I have used your cube proxy as a source, and frame 236 is the “frozen” frame.

I used XPresso here to transfer the data. But I guess your problem was given by the fact that you left the Random effector inside of the final Cloner. All object were placed then under a Fracture object, to allow for Random Colors.

Besides that, the camera mapping needs to be stored in the UV data, and with that, the Camera Projection Node in the Material will not work anymore; it needs to be a Texture node.

I’m personally not a big fan of PNG and especially not of layer transparency. Use an alpha channel with antialiasing and the RGB values large enough to cover the alpha area entirely.

P.S.: it’s finally uploaded and around 1am, I wanted to shareI have a download link for you, but private messages gives me some grief. I will try later.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
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Posted: 09 June 2022 04:37 AM   [ Ignore ]   [ # 9 ]  
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P.S. Here is a short run-down of all the steps needed.

One Minute
https://www.amazon.com/clouddrive/share/sptTh7uXyXbbDbYBE89XaliOmSTCaQQNPGZL4b0XaMV

Materials work as UV on end; any Camera Map node in Redshift 3D needs to be replaced by a simple texture node. I have tested this in different render modes.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
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