3D Ground Cover Modeling in 3D Studio Max

Following a great thread in the finished works section of the forums, Chris (blowback) was very kind to send me a ‘Making-Of’ article about the 3D modeling of the ground cover in the architectural visualization of  ‘Jeff’s House’. I hope you’ll enjoy this article and learn from it as much as I did!

Author: Christopher Kowal (blowback)
Chris is a freelance 3D Artist & a 3D Instructor at the Vancouver Central College. Check out Chris’s personal blog at: kowalventures.blogspot.com

Preparing the ground.

I started the process of modeling the ground with a simple plane, adding a displacement modifier to it. To the bitmap slot of that modifier I then added a ‘Height map’ that I manually created in Photoshop. You can see the map I used below.

Grayscale Height Map

To further adjust the shape of the ground surface I added a FFD Modifier to allow for general and quick adjustments. For more detailed deformation work I applied an edit poly modifier and then used the brush tool to paint those details in.

To blend it all together I add, at the end of all the little adjustments, a relax modifier.

Ground plane after all adjustments

Creating the ‘Gravel Path’.

Once I got the ground shape I liked, I saved a copy of the un-collapsed stack, just in case, as a backup. I then converted it all to an editable poly. I did this so I could detach the poly’s that will make up the ‘gravel path’ part of the ground. This also allowed me the freedom to raise the poly count and paint in some finer landscaping
details and adjust the other UVW maps separately. It also gave me the freedom to add a displacement modifier if needed to a smaller area of the environment.

Creating the Steps.

Now that I had the ‘gravel path’ ready, I created the steps. The steps were made out of 3 copies of a chamfered box with some noise and varying settings that were then instanced around. I also added a few spheres for the massing of the larger leaf piles. Again, these were spheres with the FFD modifier added to them.

The steps area

General 'Gravel Path' Overview

'Gravel Path' and Ground plane combined

Creating the Stones.

Creating the small stones was pretty easy. I started with a simple sphere, adding a noise modifier to it. I then add a FFD modifier, yet again, to drastically change the overall shape, making it look more stone-like. I made 12 copies of varying size & noise levels. Once I was happy with the small collection, I individually create VRay proxies of the stones, so they could be scattered on the path. I also created a few versions of the diffuse maps, just to stretch the randomness a little bit further.

From Sphere to Stone

Proxies of stone variations

Using the Advanced Painter script.

Advanced Painter script (found here at the script spot) was used to paint / scatter on the ground surface. I loaded the objects I wanted to paint on the ground into the list, selected the ground as the surface to be painted on – and started to paint away!

You can adjust your settings according to your needs as you go along. The Advanced Painter script is really powerful… It has become a regular part of my workflow.

Painting in Stones

Advanced Painter Settings

Finished stone scattering

Creating the Wood Pile.

3D Studio Max’s internal reactor system was used to create the wood pile. I am new to it but it was rather easy. First, I modeled the wood parts. I created three shapes and then copied them multiple times.

The wood logs

I then created a plane and added a rigid body collection gizmo into the scene. I added both plane and wood objects to the rigid body list. Setting the physical properties of the objects is done under the rigid body properties menu.

Reactor log (left) & plane (right) settings

Setting the Physics of the Wood Pile Simulation.

Most of the settings are default with just some adjustments on the col. tolerance. Now click on the preview in window tab to bring up the preview window. You can now play your simulation until you like the results, or reset and adjust some of the physical properties to your liking. Once I was happy with the output I updated it to 3D Studio Max. I then manually adjusted some of the logs for to add that final touch.

Before & After inside the Havoc simulation

Finished wood pile in scene

Creating the Grass.

The grass was created based on Peter Guthrie’s great two-part grass tutorial (part 1 | part 2). I will not cover that here, but I recommend you all to read that tutorial and visit Peter’s inspiring blog.

Once the grass clumps were made, I followed the same procedure as I did with the gravel. I loaded them into the Advanced Painter script and painted them on the ground surface.

The grass after painting

Creating the Leaves.

Now that I had the grass in place I created 4 different leaves. These were made out of simple planes with a bend modifier and noise modifiers applied to them for variations.

The different leaves

I then painted a couple different versions of smaller piles.

Painting piles of leaves

The last step was to attach them to all together as one object. This is where you can randomized the material.

Attaching leaves to bigger piles

These ‘leaf piles’ could now be scattered around the scene to cover up the ground. I also had some single leaves that I changed the pivot point on to scatter as well.

Scattering the leaves

Overview of the model & finished render

All that was left to do now is to check all is placed correctly.

General overview of all scattered objects

Choose the camera POV.

Camera viewport

And render the final image.

'Jeff's House' Final Result

Here is the always needed clay / wire render too…

'Jeff's House' Wire Mesh Clay Render

Original Finished Work Thread

You are welcome to comment on this article and ask questions using the comment box below!