For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Mapping Workflow Tools for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Mapping Workflow Tools v1.01
These PROFESSIONAL EDITOR TOOLS were initially developed while mapping for Verdun™ and Tannenberg™. In order to MASSIVELY SPEED UP manual object placement for LEVEL DESIGN and ENVIRONMENT ART processes these tools were refined over the course of 3 months of intense game production. STREAMLINE YOUR WORKFLOW now with these ready-at-hand tools, neatly presented on a snappy tool shelf!
Documentation (PDF)
Features:
-Toolbar with easy access to functionality
-Select, show, hide terrain
-Toggle terrain vegetation
-Snap objects to terrain
-Match object’s x/y/z angle with terrain
-Flip local x/y/z rotation
-Reset GameObject position/rotation/scale
-Terrain trees/bushes diagnostics
-Horizontal or vertical toolbar orientation
