ZBrushCentral

Problem with Creatign Displacement Map

ZBrush Usage Questions
#1

Hi there,
2 Questions:

  1. How can I increase the size of a displacement map? (Default is 1024x1024)

  2. If I create one by pressing the button »Create Displacement Map«, everything works fine but look at the picture: ZBrush creates a grey line?

(I´m not sure, but I think, someone has the same problem in the past, but I cannot find the thread, sorry)

Thank you for helping me,

Stephan

Attachments

Skin_ZSphere#2RTopo1.jpg

#2

So it seems, all of you are try to get their last christmas presents, I tried again to solve my problem by myself.

What I had forgotten to say: I work with Cinema4D.

What I did: I changed the position of the UVs in C4D, and now it seems to work.

My workflow:

  1. exporting the low-res model to C4D

  2. In C4D I give it a texture and a UV-map. Then I export as .obj and open again in ZB

  3. Store Morph Target

  4. Divide, sculpt

  5. After finish sculpting: lowest subdivision level

  6. Switch Morph Target

  7. Creating the Displacement Map

  8. Exporting again an opening in C4D for final work

#3

Just click on the field for the displacement map size in the Tool>Displacement menu, and type a new value (it is square dimensions)

This looks like a problem with your UVs getting mangled in ZB. It used to happen quite a bit with Z2, but I havent seen it much since Z3.x. It usually happens when verticies are laid out too close to the border in a UV editor, and the item undergoes ZB work with the UVs active.

Give it a new set of UVs or tweak the old ones in an external editor, and reimport them. Make sure to give the border a significant berth, and make sure all your UVs are welded. Check for overlap issues in ZB using the UV>Check option in the Tool>Texture menu.

I hope that is helpful.

#4

Hi Scott,

so you are the only one who has finished yet the Christmas shopping? :slight_smile:

Thanks for your help, I did, what you recommended and it seems to work. I´m glad, that I recognized, this problem has to do with the UV-map.

Sigh, it´s such a lot of things to know, until you are able to create a ZBrush-model…

Greetings,

Stephan

#5

Here I am, sigh…

I´m getting highly frustrated, cause exporting of my model to cinema doesn´t work I expected (and I have to work with C4D)

For learning, I created a simple model of a dino. I exported it to Cinema and made a UV-map like you can see in the attached JPG. (This is one of a lot of UVs, I tried out)

The workflow, how to im- and export is clear, also the creating and exporting of displacement maps.

Back in Cinema, I can adjust the amount of displacement. But: in my model, in filigran parts like toes and fingers, appear mistakes.

I just tried out a lot of different UV-adjustments, but i always get rubbish.

Can anybody help?

Thanks,

Stephan

Attachments

C4D.jpg

Mesh2.jpg

MeshC4D.jpg

Ohne Titel.jpg

#6

Have you read the guide for C4D found in the online documentation? Check out my signature.

#7

…I did.

Hi Matthew,

normally I try to help myself, but sometimes it is a bit too hard to understand, what is really meant in all that documentations (and, please, don´t forget, I am not an native english speaker)

The fact is, that I understood, I have to be very, very careful with creating of the UV-maps, for example in C4D.

And not to expect, that I can reach all fine details 100% perfect by exporting in C4D.

I now reached a point, where I found a workflow from planning, creating, retopologizing, sculpting and exporting files from ZB to C4D.

I bought ZB six monthes ago, and I must say, that it is a very fascinating tool, but, like everything in 3D, it takes its time to get clear. I´m still on my way…

I want to say thank you for your help during this time, you´ve always been there, that´s a great thing.

Have a nice Christmas and a fine beginning in the New Year, I hope, my questions will become a bit more detailed in the next year…

Stephan