Distance from the camera where trees will be rendered as billboards only.

Decreasing this value improves performance but makes the transition look worse because the difference between billboards and trees will be more obvious.

	function Start () {
		Terrain.activeTerrain.treeBillboardDistance = 100;
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Start() {
        Terrain.activeTerrain.treeBillboardDistance = 100;
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Start() as void:
		Terrain.activeTerrain.treeBillboardDistance = 100