private Vector3 RecordBranchModel(BranchIndex index, Vector3 bottom)
{
/*
* 计算形态数据
* 根据形态数据即可绘制对应的GameObject
*/
index.MorphologicalSim();
if (cylinderObject.activeSelf)
{
cylinderObject.SetActive(false);
}
cylinderObject.transform.localRotation = Quaternion.Euler(Vector3.zero);
cylinderObject.transform.position = bottom + new Vector3(0, index.Length / 2f, 0) * SCALE; //该节间的中心位置
cylinderObject.transform.localScale = new Vector3(index.Radius / DEFAULT_RADIUS, index.Length / DEFAULT_HEIGHT, index.Radius / DEFAULT_RADIUS) * SCALE; //尺寸
RotationGameObject(cylinderObject, bottom, index.Rotation); //旋转该圆柱体
Vector3[] vertices = GameObjectOperation.GetVerticesInWorld(cylinderObject);
Vector2[] uv = GameObjectOperation.GetUV(cylinderObject);
if (temp_Vertices.Count == 0) //最底端的节间
{
for (int i = 0; i < 40; i++)
{
temp_Vertices.Add(vertices[i]);
temp_UV.Add(uv[i]);
}
AddTriangles(0, 20);
}
else //非最底端节间
{
for (int i = 0; i < 20; i++)
{
/*
* 添加顶点
* 由于底端的顶点与前驱节间的顶点相同
* 故只用添加后20个顶点即可
*/
temp_Vertices.Add(vertices[i + 20]);
/*
* 添加UV坐标
* 需要颠倒纹理（与上一个节间的纹理相反）
* 确保连接处的纹理过渡不会突兀
*/
temp_UV.Add(temp_UV[index.Previous.TopVerticesIndex - 20 + i]);
}
AddTriangles(index.Previous.TopVerticesIndex, temp_Vertices.Count - 20);
}
//删除GameObject，防止重复
//GameObject.Destroy(cylinderObject);
/*
* 补齐index的数据
* 用于后续生成节间
*/
index.BottomVerticesIndex = index.Previous.TopVerticesIndex == -1 ?
0 : index.Previous.TopVerticesIndex;
index.TopVerticesIndex = temp_Vertices.Count - 20;
/*
* 返回当前顶端的中心位置
* 由于枝干旋转，故根据顶端的顶点位置计算
*/
return(GetCenterPoint(index.TopVerticesIndex, temp_Vertices));
}