Plane mesh generator for Unity
Add following url at package manager
https://github.com/sanukin39/UniPlaneMeshGenerator.git?path=/Assets/UniPlaneMeshGenerator#1.0.3
Download unitypackage from release page
Select Window->UniPlaneMeshGenerator to open editor window
Set generation parameter
width: Plane width
height: plane height
unit length: edge length of unit cell
horizontal: whether to export horizontal plane
Refresh Preview to check output and Export to save mesh