/// <summary>
/// 批量平滑操作
/// </summary>
public static void BatchSmooth(Vector3[] centers, float radius, float dev, int level = 1)
{
float differx = terrainSize.x / (heightMapRes - 1) * level;
float differz = terrainSize.z / (heightMapRes - 1) * level;
int arrayLength = centers.Length;
for (int i = 0; i < arrayLength; i++)
{
centers[i].x -= differx;
centers[i].z -= differz;
}
Terrain[] terrains = new Terrain[arrayLength];
HMArg[] args = new HMArg[arrayLength];
LoomA.Initialize();
for (int i = 0; i < arrayLength; i++)
{
terrains[i] = InitHMArg(centers[i], radius, out args[i]);
BatchSmooth(terrains[i], args[i].heightMap, args[i].startMapIndex, dev, level);
//BatchSmoothAsync(terrains[i], heightMaps[i], mapIndexs[i], dev, level);
}
}
/// <summary>
/// 初始化地形高度图编辑所需要的参数
/// 后四个参数需要在调用前定义
/// 编辑高度时所需要用到的参数后期打算用一个结构体封装
/// </summary>
/// <param name="center">目标中心</param>
/// <param name="radius">半径</param>
/// <param name="mapIndex">起始修改点在高度图上的索引</param>
/// <param name="heightMap">要修改的高度二维数组</param>
/// <param name="mapRadius">修改半径对应的索引半径</param>
/// <param name="limit">限制高度</param>
/// <returns></returns>
private static Terrain InitHMArg(Vector3 center, float radius, out HMArg arg)
{
Vector3 leftDown = new Vector3(center.x - radius, 0, center.z - radius);
// 左下方Terrain
Terrain centerTerrain = Utility.SendRayDown(center, LayerMask.GetMask("Terrain")).collider?.GetComponent <Terrain>();
Terrain leftDownTerrain = Utility.SendRayDown(leftDown, LayerMask.GetMask("Terrain")).collider?.GetComponent <Terrain>();
arg = default(HMArg);
if (leftDownTerrain != null)
{
// 获取相关参数
arg.mapRadiusX = (int)(heightMapRes / terrainSize.x * radius);
arg.mapRadiusZ = (int)(heightMapRes / terrainSize.z * radius);
arg.mapRadiusX = arg.mapRadiusX < 1 ? 1 : arg.mapRadiusX;
arg.mapRadiusZ = arg.mapRadiusZ < 1 ? 1 : arg.mapRadiusZ;
arg.startMapIndex = GetHeightmapIndex(leftDownTerrain, leftDown);
arg.centerMapIndex = new Vector2Int(arg.startMapIndex.x + arg.mapRadiusX, arg.startMapIndex.y + arg.mapRadiusZ);
arg.heightMap = GetHeightMap(leftDownTerrain, arg.startMapIndex.x, arg.startMapIndex.y, 2 * arg.mapRadiusX, 2 * arg.mapRadiusZ);
arg.limit = 0 /*heightMap[mapRadius, mapRadius]*/;
return(leftDownTerrain);
}
// 左下至少有一个方向没有Terrain,大多数情况下不会进入，如果删掉地图的左边界和下边界无法编辑，影响不大，其实我很想删掉，所以注释什么的就去TM的吧
else if (centerTerrain != null)
{
// 获取相关参数
arg.mapRadiusX = (int)(heightMapRes / terrainSize.x * radius);
arg.mapRadiusZ = (int)(heightMapRes / terrainSize.z * radius);
arg.mapRadiusX = arg.mapRadiusX < 1 ? 1 : arg.mapRadiusX;
arg.mapRadiusZ = arg.mapRadiusZ < 1 ? 1 : arg.mapRadiusZ;
arg.centerMapIndex = GetHeightmapIndex(centerTerrain, center);
arg.startMapIndex = new Vector2Int(arg.centerMapIndex.x - arg.mapRadiusX, arg.centerMapIndex.y - arg.mapRadiusZ);
int width = 2 * arg.mapRadiusX, height = 2 * arg.mapRadiusZ;
if (arg.startMapIndex.x < 0 && arg.startMapIndex.y < 0)
{
if (centerTerrain.Left() != null)
{
height += arg.startMapIndex.y;
arg.startMapIndex.y = 0;
arg.startMapIndex.x += heightMapRes;
centerTerrain = centerTerrain.Left();
}
else if (centerTerrain.Bottom() != null)
{
width += arg.startMapIndex.x;
arg.startMapIndex.x = 0;
arg.startMapIndex.y += heightMapRes;
centerTerrain = centerTerrain.Bottom();
}
else
{
width += arg.startMapIndex.x;
arg.startMapIndex.x = 0;
height += arg.startMapIndex.y;
arg.startMapIndex.y = 0;
}
}
else if (arg.startMapIndex.x < 0)
{
width += arg.startMapIndex.x;
arg.startMapIndex.x = 0;
}
else if (arg.startMapIndex.y < 0)
{
height += arg.startMapIndex.y;
arg.startMapIndex.y = 0;
}
arg.heightMap = GetHeightMap(centerTerrain, arg.startMapIndex.x, arg.startMapIndex.y, width, height);
arg.limit = 0 /*heightMap[mapRadius, mapRadius]*/;
}
return(centerTerrain);
}
