Cloth and Drapery trick in ZBrush

A Simple but powerful trick…

This is going to be a quick guide to show you a simple, but really cool trick to create certain types of cloth and drapery in ZBrush.

The idea for this tutorial came from the following gif (a work-in-progress from the second part of the double action brushes tutorial.)

 

I used this simple object to show the effect of a custom brush I made to sculpt folds and drapery. Some of the questions I got, were about the test object itself rather than the brush. So, I thought I should show you how you can go about creating cloth without leaving ZBrush.

Although the technique in this tutorial might not be the most efficient way to approach a complex dress design or a tunic for your characters, it certainly is a fast way to test and produce intricate shapes as a starting point. You can refine it further and combine this technique with other ZBrush process to make a more interesting piece of cloth:

cloth_trick_tutorial_preview

Ok let’s get started.

First let’s take a quick look at the main tools and ZBrush features we are going to use:

The Bridge curve brush
Masking
ZRemesher
ZModeler brush

The set up

We need to have two objects living in the same subtool. The objects can be anything, a couple of planes would do the job, but I’ll use spheres to show you that it can be done on any object (I know that the object of this example is boring, but it’ll get better).

Cloth_trick_tutorial_twoSpheres

It doesn’t matter where you place the objects as long as there is (ideally) some distance between them. I just duplicated my sphere and moved it up.

Also make sure you don’t have any masks or subdivision levels in your objects. If you do, clear the masks and delete the subdivision levels before the next step.

The bridge of cloth

Here is where the bridge curve brush works really well. We are going to use it to create the cloth by bridging the two objects.

Select the bridge curve brush (shortcut: “BCV”) and draw a closed curve in one object. The idea here is to create the two ends of a piece of cloth, where each curve is the “border” or the “edge of that cloth. Make sure that the curve you draw, faces the other object:

Cloth_trick_tutorial_facingSpheres

You can start from the bottom or the top. For this example I created the curve for the top first, because the bottom was going to be more complex than the one at the top.

Now that you have your first curve in one object, you can draw the second curve in the second object. As soon as you release the “click” after creating the second curve, ZBrush will bridge the two curves together with geometry.

Cloth_trick_tutorial_bridge

Possible problems

As you can see, this is a very simple process, but for the first few tries, you might get things that look a bit weird. So, here are the reasons why your piece of cloth might look weird and how to easily fix it.

If the bridge section looks like the image below, its probably because we are creating a tubular shape (in this case) and the resulting mesh has the normals facing inwards.

Cloth_trick_tutorial_invertedNormals

FIX: simply click on the “Flip” button under the display properties in the tool palette. This will invert the normal’s direction including the spheres, but since they are only objects to help us build the cloth, we can leave them “flipped”. Alternatively if you need the normals facing inwards, you can turn the “Double” switch ON (orange) to see the mesh better.

If there is a missing section or a hole in the bridge, it’s  because one or the two curves are not closed properly.

Cloth_trick_tutorial_gap

FIX: Zoom in to the beginning and/or the end point of your curves, to find the one that has a gap. Click the end point and move it towards the beginning and ZBrush will automatically close the gap. Alternatively if the distance between points is too much, you can draw an extra section of the curve to close it.

This case is rare, but I remember it was an issue in older versions of ZBrush. If the bridge section looks weird like it is twisted, it might be because you drew the two curves in separate directions. This is more likely to happen if the curves are very swirly and complex.

Cloth_trick_tutorial_twisted

FIX: fortunately you can undo and redraw the last curve so if you get this “twisted” result, just draw the new curve in the opposite direction.

Making the mesh usable

Now, we need to separate and clean up the mesh we just created. You’ll notices that when you draw the second curve to create the bridge, ZBrush automatically masks out the two objects. This is awesome because all you need to do, is split the masked points (or unmasked points – same result). From the subtool palette, under “Split” click on the “Split Masked Points” button. This will give us the “construction objects” (spheres) in one subtool and our piece of cloth in another subtool.

Cloth_trick_tutorial_splitunmasked

We could leave it here and just start sculpting details with the drapery brush for instance, but in some cases it would be better to have thickness. So the first thing we are going to do, is use the ZRemesher to create a cleaner topology.

The amount of polygons for the ZRemesher process is up to you, but I’d recommend to go for a very low number so the resulting mesh is easier to manipulate. Remember we are just creating the base for our cloth, you can go crazy with details and folds later.

cloth_trick_tutorial_Zremesher

Giving Thickness to the cloth

With the Zmodeller brush (BZM) selected, hover over a single face and press space bar. Make sure you have the “Qmesh” selected as the action and “All polygons” as the target. Click on any face and drag to create the thickness.

cloth_trick_tutorial_thickness

Keep in mind that if you have a lot of polygons this process will be very slow, this is another reason why I suggest you keep a the poly count very low when Zremeshing.

Let’s make it interesting

Ok, so those are the basics. I know the object we just created doesn’t look very exciting and you are probably thinking… “i could have done that with a cylinder”, and you are right. However, now that you know the workflow and the tools, you can go ahead and take this to the next level. As I mentioned early, once you have your base mesh, you can use other ZBrush processes for more complex stuff.

For example, let’s replace the spheres we used as our “construction objects”, with two planes.

Cloth_trick_tutorial_planes

Now, mask an irregular shape on each plane (I subdivided the planes a couple of times and deleted the lower subdivision levels, to get a sharper edge in the mask).

Cloth_trick_tutoria_masked-planes

To “cut out” the mask from the planes, we’ll use the extract function (Tool > Subtool > Extract) without thickness (set to 0). Also don’t forget to click on Accept to complete this action:

Cloth_trick_tutorial_extract-operation

Now, to create the curves manually along the edge of these object would be very time consuming, fortunately we can use Frame mesh (under stroke > Curve functions) to create curves following the edge of the objects.

Cloth_trick_tutorial_frame-object

With the CurveBridge brush selected, click on a curve to close them. This looks more interesting, maybe a skirt or a table cloth? Now simply follow the steps we discussed earlier on, to split and clean up the mesh and give it some thickness.

Cloth_trick_tutorial_click-and-process

Now that we have a decent base mesh with clean topology, you can begin to add folds and move things around.

To show you how powerful this simple technique could be, Here are a few time-lapses showing the process of some random things I sketched:

Cloth_trick_tutorial_construction-sleepingbag   quick_sleepingbag

Cloth_trick_tutorial_option-B   Cloth_trick_option-B

Cloth_trick_tutorial_construction-curtain   ZBrush_Quick_cloth_trick_curtain

Done!

That’s it for this guide. Just to recap, here is an image with a summary of this workflow in case you want to save it or add it to your Pinterest board for reference:

Cloth_trick_tutorial_summary

I hope you’ve found this information useful. If you have any questions or suggestions to improve this process let me know in the comments.

Also, let me know if you make something cool with this technique, I’d love to see it.

Cheers!

Arac

A quick Timelapse from the “Arac” sketch process.

Read More

Working with reference images in ZBrush

In this quick guide, I’ll show you a couple of tricks to use reference images within ZBrush and optimise your screen space!

Read More

Alien creature sculpting and texturing time-lapse

This time-lapse is from the sculpting and texturing process of one of the models I shared with the ZBrush Skin Material & single pass BPR render.  Share on Facebook Share Share on TwitterTweet Share on Pinterest… Share on Facebook Share Share on TwitterTweet...
Read More

6 tips about ZBrush subtools

Here is a very simple and extremely useful set of tips for dealing with multiple subtools in ZBrush.

Read More

Cloth and drapery trick in ZBrush

Quick guide about a Simple, but powerful trick to create certain types of cloth and drapery in ZBrush.

Read More

Sketching a dragon head with Sculptris

This is a quick step by step guide on how to create a 3D sketch dragon bust, from the eBook: Getting started with Sculptris.

Read More

Comic EYE MatCap Tutorial

Video tutorial with a very quick way to get good looking comic eyes in ZBrush using a MatCap

Read More

Painting geometry resolution in ZBrush

‘Painting’ geometry resolution without Dynamesh or subdivide your model

Read More

Lost Creatures – Morning in the woods BACKGROUND

a quick guide to create scenery backgrounds in Photoshop for your characters and creatures.

Read More

3D Lingo

Here is a quick reference guide a series of commonly used terms and concepts you’ll probably see quite often in 3D softwares.

Read More

Click the image below to download the Folds and Drapery custom brush.

I'll keep you posted!
Subscribe here and I will email you when new tutorials and resources are available. Plus get the ZBrush cheat sheet freebee: ZBG_ZBrushShortcuts_CheatSheet_preview
We respect your privacy.

Let’s hang out!

Popular Posts and Pages