UnityEngine.Terrain.AddTreeInstance C# (CSharp) Method

        public void AddTreeInstance(TreeInstance instance)
        {
            INTERNAL_CALL_AddTreeInstance(this, ref instance);
        }

		public static void PlaceTrees(Terrain terrain, float xBase, float yBase)
		{
			if (terrain.terrainData.treePrototypes.Length == 0)
			{
				return;
			}
			TreePainter.selectedTree = Mathf.Min(TerrainInspectorUtil.GetPrototypeCount(terrain.terrainData) - 1, TreePainter.selectedTree);
			if (!TerrainInspectorUtil.PrototypeIsRenderable(terrain.terrainData, TreePainter.selectedTree))
			{
				return;
			}
			int num = 0;
			TreeInstance instance = default(TreeInstance);
			instance.position = new Vector3(xBase, 0f, yBase);
			instance.color = TreePainter.GetTreeColor();
			instance.lightmapColor = Color.white;
			instance.prototypeIndex = TreePainter.selectedTree;
			instance.heightScale = TreePainter.GetTreeHeight();
			instance.widthScale = ((!TreePainter.lockWidthToHeight) ? TreePainter.GetTreeWidth() : instance.heightScale);
			instance.rotation = TreePainter.GetTreeRotation();
			bool flag = Event.current.type == EventType.MouseDrag || TreePainter.brushSize > 1f;
			if (!flag || TerrainInspectorUtil.CheckTreeDistance(terrain.terrainData, instance.position, instance.prototypeIndex, TreePainter.spacing))
			{
				terrain.AddTreeInstance(instance);
				num++;
			}
			Vector3 prototypeExtent = TerrainInspectorUtil.GetPrototypeExtent(terrain.terrainData, TreePainter.selectedTree);
			prototypeExtent.y = 0f;
			float num2 = TreePainter.brushSize / (prototypeExtent.magnitude * TreePainter.spacing * 0.5f);
			int num3 = (int)(num2 * num2 * 0.5f);
			num3 = Mathf.Clamp(num3, 0, 100);
			int num4 = 1;
			while (num4 < num3 && num < num3)
			{
				Vector2 insideUnitCircle = UnityEngine.Random.insideUnitCircle;
				insideUnitCircle.x *= TreePainter.brushSize / terrain.terrainData.size.x;
				insideUnitCircle.y *= TreePainter.brushSize / terrain.terrainData.size.z;
				Vector3 position = new Vector3(xBase + insideUnitCircle.x, 0f, yBase + insideUnitCircle.y);
				if (position.x >= 0f && position.x <= 1f && position.z >= 0f && position.z <= 1f && TerrainInspectorUtil.CheckTreeDistance(terrain.terrainData, position, TreePainter.selectedTree, TreePainter.spacing * 0.5f))
				{
					instance = default(TreeInstance);
					instance.position = position;
					instance.color = TreePainter.GetTreeColor();
					instance.lightmapColor = Color.white;
					instance.prototypeIndex = TreePainter.selectedTree;
					instance.heightScale = TreePainter.GetTreeHeight();
					instance.widthScale = ((!TreePainter.lockWidthToHeight) ? TreePainter.GetTreeWidth() : instance.heightScale);
					instance.rotation = TreePainter.GetTreeRotation();
					terrain.AddTreeInstance(instance);
					num++;
				}
				num4++;
			}
		}