Itoo Software Forum

Forest Pack => Forest Pro (*) => Topic started by: ldotchops on March 03, 2022, 10:53:18 PM

Title: possible to generate collision mesh?
Post by: ldotchops on March 03, 2022, 10:53:18 PM

I want particles to collide with my forest pack scatter. i was wondering if there is a way to generate a low res proxy mesh from the scatter? i know you can replace instance, but there are way to many for this scene. is there another method to acheive this?

Thanks

Title: Re: possible to generate collision mesh?
Post by: Paul Roberts on March 04, 2022, 12:02:27 PM

Hi,

Forest Pack doesn't have the ability to generate a collision mesh I'm afraid, except for the built-in display modes.

One option though might be to use Max's built in Substitute modifier.

To use it, first you'd need to create a collision mesh. (Here I just created a convex hull, but you'd probably be better off modelling something manually to better match the trunk)

(https://i.imgur.com/F8kh3Cn.png)

Next, add a Substitute modifier to the object that you're scattering, and pick the convex hull from the scene.

(https://i.imgur.com/rdkYRma.png)

Turn off In Render. In Forest Pack, set the display mode to Mesh and you should now be able to display different geometry in the viewports than in the render.

(https://i.imgur.com/op4SIXW.png)

I hope that helps,
Paul


 

Title: Re: possible to generate collision mesh?
Post by: ldotchops on March 04, 2022, 01:44:19 PM

That's a really interesting take, I never thought to use the substitute modifier. Thank you for this!