Hair and Hair Collieder

[Adam Trachtenberg]

It’s under the simulation menu.

[Tony Barone]

Thanks! Obviously the one place I didn’t look!

I really appreciate all your help on this thread… been learning a lot about this part of C4D thats remained a mystery for so long!

Can you tell me what the best way is to “fill in” a grass area?

I’ve tried several settings and some, such as increasing the guides count and hairs count seem to make the most difference. Increasing just the guides seems to slow things down a lot more than increasing hairs.

The “Fill Hairs” settings don’t seem to make a noticeable difference.

And the “Cloning” setting within the Hairs setting also doesn’t do what I would expect.

You seem to know quite a bit about this portion of C4D, would really appreciate you shedding some more light on this, or pointing me in a direction where I could learn more elsewhere.

Thanks again!

[Adam Trachtenberg]

Increasting the number guides has no effect on the number of hairs. It’s mostly useful for styling and to increase the accuracy of simulation.

Fill hairs, OTOH, should increase density and would be the method I’d recommend for grass.

From the help docs:

“Simply said, fill hair is additional hair that is interpolated between existing hair when the scene is rendered. This lets you render objects with a lot of hair, even millions (e.g. fur), while keeping render times down and saving on memory. When applying fill hair, make sure you use relatively little real hair since the interpolation between very much real hair can take a very long time. Fill hair will also be created if you assign a Hair material directly to an object to which hair is not assigned.”

Cloning allows you to use custom object in place of hairs, so not applicable here.

[Tony Barone]

Adam, thanks again for all your help. I took some time to go through the manual and learned quite a bit from there as well. I hadn’t realized how much Maxon had improved the help system since the last time I took a look at it!

[Adam Trachtenberg]

Yeah, the help system really is great. You can r-click on the name of any parameter and get a link that will take you directly to the relevant spot in the help docs. As many years as I’ve been using Cinema, I still use it all the time.