In this video tutorial I will show you how you can make realistic looking grass in Cinema 4D and let the wind blow through it.

Create a plane and add hair

The first thing you’ll do is create a plane. Now go in Simulate/Hair Objects/Add Hair.
Now we want to create realistic looking grass, so we have to change some settings.

Hide the plane

First I would like to hide the plane. You can do that by holding ALT on the keyboard and clicking twice between those dots so the plane will be hidden.

Hair settings

So lets render. As you see we still have a lot of work to do. Lets go to the hair object, select ‘Guides‘ and change the lenght to, lets say 35. Go to the ‘Hairs‘ tab and double the count to 10.000. Go to dynamics and enable ‘Rigid’. If we don’t do that the grass will fall like this.

Material options

After that go to the hair material and change the color gradient to a greenish gradient. At the left side we choose a darkgreen color and at the right side we choose a light green color. Furthermore we can add some variation in the grass blades by changing the Hue and Value.

After that enable Frizz and Bend. And the last thing. Reduce the specular strenght to 30. Lets see what we have right now. That looks a lot better!

Add wind

Now we want the wind to blow trough the grass. In order to get that result, go to Simulate/Particles/Turbulence.

The turbulence emitter has 4 settings.

Strenght, Scale, Frequency and Respect Dynamics Mass. In this case we will edit the upper 3 settings.

Strenght:

The strenght is simply how fast the wind blows. 10 means a soft breeze. 500 means a massive storm.

Scale:

The scaling value defines the size of the noise. 0 means a lot of noise. The smaller the noise the more randomly the grass blades will be dispersed; the larger the noise the more the blades will flow in the same direction

Frequency:

The frequency desides how the wind behaves. Lower values will cause the wind to change more slowly. Larger values will cause the noise to change more quickly.

Change the Turbulence settings

Here are 4 examples with different turbulence settings so you can see how the grass behaves with these values. So lets change the settings to: 300, 500 and 100 and see what it will do.

Example

And as you see. We have realitiatic looking grass blown by the wind. You can play around with the settings until you are fully satisfied. Thanks for watching this video. If you like it, like it and if you want to subscribe for more upcoming tutorials, feel free to do that. You can also visit my website www.c4dee.com. My name is Ferdy Korpershoek and I will see you next time.
40 50 10
70 100 10