Instant Terra Forum

Instant Terra => Support - How to ... ? => Topic started by: Marianne Calva on October 08, 2017, 10:45:56 AM

Title: Full terrain composition
Post by: Marianne Calva on October 08, 2017, 10:45:56 AM
-- from J5689 YT onYouTube --

When I try the same thing, the terrains blend together but I get a seam where the two terrains meet. Any solution to this?
Title: Re: Full terrain composition
Post by: Alexis Vaisse on October 09, 2017, 10:40:31 AM
Hi,

If the second terrain (i.e. the one you can translate, rotate and scale) doesn’t cover the first terrain entirely, the heights along its borders must be equal to zero, otherwise you get a seam.

To ensure that the heights are equal to zero along the borders of a terrain, you can use a mask whose values will be 0 along its borders.
There are several nodes that can generate such a mask: the Disk node, the Circular symmetry node or the Painted mask node.

Also if the heights along the borders are ‘almost’ zero, you can use a Apply curve node to "squash" the terrain and get exactly zero.