public List <Tree> createTrees(DEMOperate dem, int i)
{
trees = forestShp.createTreePosition(dem, i);
forestArea = forestShp.GetForestArea();
return(trees);
}
/// <summary>
/// 创建树木位置
/// </summary>
public List <Tree> createTreePosition(DEMOperate dem, int i)
{
Console.WriteLine("Create trees of feature " + i);
if (oLayer == null)
{
return(null);
}
string forestType = "人工林";
string distributeType = "";
double density = 0;
double standArea = 0;
double treeNum = 0;
double D = 0, Dg = 0;
List <Tree> trees = new List <Tree>();
Feature oFeature = oLayer.GetFeature(i);
// 获得森林类型
for (int iField = 0; iField < m_FeildList.Count; iField++)
{
if (m_FeildList[iField].ToUpper() == "F_QIYUAN" || m_FeildList[iField].ToUpper() == "TYPE" || m_FeildList[iField].ToUpper() == "FOREST_TYPE" || m_FeildList[iField].ToUpper() == "STAND_TYPE")
{
forestType = GetFeildContent(iField, oFeature);
}
if (m_FeildList[iField].ToUpper() == "F_DWZS" || m_FeildList[iField].ToUpper() == "DENSITY" || m_FeildList[iField].ToUpper() == "FOREST_DENSITY" || m_FeildList[iField].ToUpper() == "STAND_DENSITY")
{
density = Convert.ToDouble(GetFeildContent(iField, oFeature));
}
if (m_FeildList[iField].ToUpper() == "DISTRIBUTE" || m_FeildList[iField].ToUpper() == "F_FBLX")
{
distributeType = GetFeildContent(iField, oFeature);
}
if (m_FeildList[iField].ToUpper() == "MEAN_DBH")//算数平均胸径
{
D = Convert.ToDouble(GetFeildContent(iField, oFeature));
}
if (m_FeildList[iField].ToUpper() == "QUADRATIC_MEAN_DBH" || m_FeildList[iField].ToUpper() == "Q_MEAN_DBH")//平均胸径（二次平均胸径）
{
Dg = Convert.ToDouble(GetFeildContent(iField, oFeature));
}
if (m_FeildList[iField].ToUpper() == "F_ZHUSHU" || m_FeildList[iField].ToUpper() == "TREE_NUMBER" || m_FeildList[iField].ToUpper() == "TREENUMBER")//林木数量
{
treeNum = Convert.ToDouble(GetFeildContent(iField, oFeature));
}
}
if (density == 0)
{
if (treeNum != 0)
{
standArea = oFeature.GetGeometryRef().GetArea();
density = treeNum / standArea / 10000;
}
else
{
Console.WriteLine("DATA ERROR: The Stand density is lacked.");
return(null);
}
}
// 人工林
if (forestType == "人工林" || forestType == "Plantation")
{
Geometry geom = oFeature.GetGeometryRef();
Envelope env = new Envelope();
geom.GetEnvelope(env);
//分布范围
double xMax, xMin, yMax, yMin, xCen, yCen;
xMax = env.MaxX;
xMin = env.MinX;
yMax = env.MaxY;
yMin = env.MinY;
xCen = (xMax + xMin) / 2;
yCen = (yMax + yMin) / 2;
//将值放入泛型当中位置坐标
List <double> tempX = new List <double>();
List <double> tempY = new List <double>();
double sideLength = Math.Sqrt(density / 10000 * ((xMax - xMin) * (yMax - yMin)));//边长
double offsetX = (xMax - xMin) / sideLength;
double offsetY = (yMax - yMin) / sideLength;
double diagonal = Math.Sqrt((xMax - xMin) * (xMax - xMin) + (yMax - yMin) * (yMax - yMin)); //对角线
double xAdd = (diagonal - (xMax - xMin)) / 2;
double yAdd = (diagonal - (yMax - yMin)) / 2;
Random rand = new Random();
//菱形均匀分布
if (distributeType.Contains("Diamond") || distributeType.Contains("Interlaced"))
{
Console.WriteLine("Diamond distribution");
int row = 0;
for (double j = xMin - xAdd; j < xMax + xAdd; j += offsetX)
{
if (row % 2 == 0)
{
for (double k = yMin - yAdd; k < yMax + yAdd; k += offsetY)
{
tempX.Add(j + rand.Next(10) / 10.0 * offsetX / 4);
tempY.Add(k + rand.Next(10) / 10.0 * offsetY / 4);
}
}
else
{
for (double k = yMin - yAdd + offsetY / 2; k < yMax + yAdd; k += offsetY)
{
tempX.Add(j + rand.Next(10) / 10.0 * offsetX / 4);
tempY.Add(k + rand.Next(10) / 10.0 * offsetY / 4);
}
}
row++;
}
}
// 环形均匀分布
else if (distributeType.Contains("Circular"))
{
Console.WriteLine("Circular distribution");
//对角线做直径,计算面积，计算株数，计算环数，计算环距，计算极坐标，计算xy
double r = diagonal / 2;
double A = Math.PI * r * r;
double N = density / 10000 * A;
int roundNum = (int)((Math.Sqrt(1 + 4.0 / 3 * N) - 1) / 2);
double roundDistance = Math.Sqrt(A / Math.PI) / roundNum;
for (int j = 0; j < roundNum; j++)
{
double radius = j * roundDistance; //极矩
for (int k = 0; k < 6 * j; k++)
{
double angle = k * 2 * Math.PI / 6 / j; //极径
tempX.Add(radius * Math.Cos(angle) + rand.Next(10) / 10.0 * roundDistance / 4 + xCen + rand.Next(10) / 10.0 * roundDistance / 4);
tempY.Add(radius * Math.Sin(angle) + rand.Next(10) / 10.0 * roundDistance / 4 + yCen + rand.Next(10) / 10.0 * roundDistance / 4);
}
}
}
// 井型均匀分布
else if (distributeType.Contains("Rectangular"))
{
Console.WriteLine("Rectangular distribution");
for (double j = xMin - xAdd; j < xMax + xAdd; j += offsetX)
{
for (double k = yMin - yAdd; k < yMax + yAdd; k += offsetY)
{
tempX.Add(j + rand.Next(10) / 10.0 * offsetX / 4);
tempY.Add(k + rand.Next(10) / 10.0 * offsetY / 4);
}
}
}
else
{
Console.WriteLine("Rectangular distribution (default)");
// 默认井型
for (double j = xMin - xAdd; j < xMax + xAdd; j += offsetX)
{
for (double k = yMin - yAdd; k < yMax + yAdd; k += offsetY)
{
tempX.Add(j + rand.Next(10) / 10.0 * offsetX / 4);
tempY.Add(k + rand.Next(10) / 10.0 * offsetY / 4);
}
}
}
//计算林分坡度
dem.getColRow(xCen, yCen);
double aspect = dem.CalcuAspect();
//坐标系转换，林木沿山坡分布
for (int j = 0; j < tempX.Count; j++)
{
double x = (tempX[j] - xCen) * Math.Cos(aspect) + (tempY[j] - yCen) * Math.Sin(aspect);
double y = (tempY[j] - yCen) * Math.Cos(aspect) - (tempX[j] - xCen) * Math.Sin(aspect);
tempX[j] = x + xCen;
tempY[j] = y + yCen;
}
//用此Driver创建Shape文件
//创建DataSource
string temppath = "temp" + i + ".shp";
DataSource pDataSource = oDriver.CreateDataSource(temppath, null);
if (pDataSource == null)
{
Console.WriteLine("DataSource Creation Error");
}
//创建层Layer
string outname = "point_out" + i;
Layer tempLayer = pDataSource.CreateLayer(outname, null, wkbGeometryType.wkbPoint, null);
if (tempLayer == null)
{
Console.WriteLine("Layer Creation Failed");
}
//创建属性
FieldDefn oField1 = new FieldDefn("TREE_ID", FieldType.OFTInteger);
oField1.SetWidth(16);
tempLayer.CreateField(oField1, 1);
//创建一个Feature
Feature mFeature = new Feature(tempLayer.GetLayerDefn());
// 创建点
Geometry mPoint = new Geometry(wkbGeometryType.wkbPoint);
for (int j = 0; j < tempX.Count; j++)
{
//树木编号
mFeature.SetField(0, j);
//添加坐标点
mPoint.AddPoint(tempX[j], tempY[j], 0);
mFeature.SetGeometry(mPoint);
//将带有坐标及属性的Feature要素点写入Layer中
tempLayer.CreateFeature(mFeature);
}
//关闭文件读写
mFeature.Dispose();
mPoint.Dispose();
//创建裁切Layer
string clipLyrname = "ClipLayer" + i;
Layer clipLayer = pDataSource.CreateLayer(clipLyrname, null, wkbGeometryType.wkbPolygon, null);
clipLayer.CreateFeature(oFeature);
//裁剪
string treePosition = "treePosition" + i;
Layer result = pDataSource.CreateLayer(treePosition, null, wkbGeometryType.wkbPoint, null);
tempLayer.Clip(clipLayer, result, new string[] { "SKIP_FAILURES=YES" }, null, null);
// 删除临时temp.shp
tempLayer.Dispose();
pDataSource.DeleteLayer(0);
//以下读取数据并对trees赋值
int rFeatureCount = (int)result.GetFeatureCount(0);
Feature rFeature = null;
for (int k = 0; k < rFeatureCount; k++)
{
Tree tree = new Tree();
tree.ForestID = i; //标注所属树林
tree.ID = k; //树木编号
rFeature = result.GetFeature(k);
Geometry geometry = rFeature.GetGeometryRef();
tree.X = geometry.GetX(0);
tree.Y = geometry.GetY(0);
trees.Add(tree);//加入trees
}
Console.WriteLine("Get trees' locations");
//求算WVA,WVA表示采用加权Voronoi图得出每株数的多边形面积
List <double> boundX = new List <double>();
List <double> boundY = new List <double>();
boundX.Add(xMin - offsetX); boundX.Add(xMin - offsetX); boundX.Add(xMax + offsetX); boundX.Add(xMax + offsetX);
boundY.Add(yMin - offsetY); boundY.Add(yMax + offsetY); boundY.Add(yMax + offsetY); boundY.Add(yMin - offsetY);
Geometry oGeometry = new Geometry(wkbGeometryType.wkbPolygon);
List <double> treeX = new List <double>();
List <double> treeY = new List <double>();
List <double> Area = new List <double>();
for (int t = 0; t < trees.Count; t++)
{
//只在本树林范围计算WVA，此时tree_count为除本树林已加入trees的棵数
treeX.Add(trees[t].X);
treeY.Add(trees[t].Y);
Area.Add(0); //初始化
}
int t_num = trees.Count; //此树林树木棵数
double[] treex = treeX.ToArray(); double[] treey = treeY.ToArray();
double[] boundx = boundX.ToArray(); double[] boundy = boundY.ToArray();
double[] area = Area.ToArray();
CreateThiessen(treex, treey, t_num, boundx, boundy, 4, area);
for (int t = 0; t < trees.Count; t++)
{
trees[t].WVA = area[t];
}
//分配胸径
WeibullDistribute(trees, trees.Count, D, Dg);
// 删除临时
clipLayer.Dispose();
result.Dispose();
pDataSource.DeleteLayer(0);
pDataSource.DeleteLayer(0);
}
return(trees);
}
/// <summary>
/// 计算胸径
/// </summary>
/// <param name="array"></param>
/// <param name="units"></param>
/// <param name="dem"></param>
/// <param name="forest"></param>
/// <param name="param"></param>
/// <param name="age"></param>
/// <param name="SI"></param>
/// <param name="D0"></param>
/// <param name="minTg"></param>
/// <param name="meanPg"></param>
/// <param name="canopydensity"></param>
/// <returns></returns>
List <Tree> CalcuDBH(List <Tree> array, List <SpatialUnit.unit_tree> units, DEMOperate dem, List <double> param, int age, double forestArea, double SI, double D0, double minTg, double meanPg, double canopydensity, int MT, int VT, double TS, double BP)
{
modelLibrary.DBHmodels.DBHGrowthModelSet dbh = new modelLibrary.DBHmodels.DBHGrowthModelSet(array);
switch (DBHmodeltype)
{
case (int)enDBHmodels.QinModel:
array = dbh.DBHGrowthModel1(units, dem, param, SI);
break;
case (int)enDBHmodels.LiuModel:
array = dbh.DBHGrowthModel2(units, dem, param, D0, forestArea);
break;
case (int)enDBHmodels.ZhangModel:
array = dbh.DBHGrowthModel3(units, dem, param, minTg, meanPg, forestArea);
break;
case (int)enDBHmodels.MaModel:
array = dbh.DBHGrowthModel4(units, dem, param, canopydensity, SI, D0, forestArea);
break;
case (int)enDBHmodels.SonmezModel:
array = dbh.DBHGrowthModel5(units, dem, param, SI, age, forestArea, BP);
break;
case (int)enDBHmodels.PukkalaModel:
array = dbh.DBHGrowthModel6(param, forestArea, MT, VT, TS);
break;
case (int)enDBHmodels.CampoModel:
array = dbh.DBHGrowthModel7(param, forestArea, age);
break;
case (int)enDBHmodels.MabvuriraModel1:
array = dbh.DBHGrowthModel8(param, forestArea, age);
break;
case (int)enDBHmodels.MabvuriraModel2:
array = dbh.DBHGrowthModel9(param, forestArea, age);
break;
case (int)enDBHmodels.DengModel1:
array = dbh.DBHGrowthModel10(param, forestArea, age, SI);
break;
case (int)enDBHmodels.DengModel2:
array = dbh.DBHGrowthModel11(param, forestArea, age, SI);
break;
case (int)enDBHmodels.DengModel3:
array = dbh.DBHGrowthModel12(param, forestArea, age, SI);
break;
case (int)enDBHmodels.DengModel4:
array = dbh.DBHGrowthModel13(param, forestArea, age, SI);
break;
case (int)enDBHmodels.DengModel5:
array = dbh.DBHGrowthModel14(param, forestArea, age, SI);
break;
case (int)enDBHmodels.ZengModel:
array = dbh.DBHGrowthModel15(param, forestArea, age, SI);
break;
case (int)enDBHmodels.LvModel:
array = dbh.DBHGrowthModel16(param, forestArea, SI);
break;
}
return(array);
}
