Modify mesh or convert to terrain

Unity Engine
1

Hi there,

I’m new to Unity and my question was surely already answered in some way but I think it’s a kind of specific. Correct me if I’m wrong!

My fellow student an I are using Unity to model a real area for our bachelor thesis on which the users can walk around.

Therefor we calculated a mesh from pictures made by a drone.

Mainly we want to fill holes in that mesh, plant trees, render lighting and so on.

This resulting mesh consists of about 89000 triangles. Since Unity can only handle meshes with up to about 65k vertices, the mesh is divided in two sub meshes.

I used the Object to Terrain Script to convert the meshes to a terrain but because of the two divided meshes not the hole mesh is converted, only the sub meshes individually.

Reducing the vertices causes a lot of loss in information.

A Picture of the mesh (holes are on purpose):

1856409--119020--mesh.jpg
1856409--119020--mesh.jpg1921×750 335 KB

Is there a way to convert both sub meshes together in one terrain or modify the mesh directly?

Thanks in advance!

Greetings
Marco

2

I don’t work with terrains very much personally, so this may not work well. Could you export both terrains as raw heightmap images and then combine them into a single image using some graphics program? Then import them back into Unity as a single terrain?

3

Thanks for your answer.

Yeah the we`ve already tried the solution with the heightmaps. But the accuracy of unity with meshes is higher than with that of heightmaps. Right now we’re triying to reduce the polygon count with Geomagic.