private Pt2d getProjectBackwardPoint(IPoint pGeoCoords, IRaster pDemRaster, ClsGetCameraView pGetCameraView,
Matrix pRotateMatrix, ClsCameraPara cameraPara)
{
Pt3d ptFeaturePoint = new Pt3d();
ptFeaturePoint.X = pGeoCoords.X;
ptFeaturePoint.Y = pGeoCoords.Y;
//从DEM上得到相应高程
IRasterProps pDemRasterProps = pDemRaster as IRasterProps;
double nGeoRange = pDemRasterProps.MeanCellSize().X * 10;
Pt2i ptLeftTop = new Pt2i();
double[,] dbSubData = pGetCameraView.getSubDem(pDemRaster, ptFeaturePoint, nGeoRange, ref ptLeftTop);
if (dbSubData == null)
{
return(null);
}
if (pGetCameraView.GetGeoZ(pDemRaster, dbSubData, ptLeftTop, ptFeaturePoint.X, ptFeaturePoint.Y, ref ptFeaturePoint.Z))
{
Pt2d pt2d = new Pt2d();
double dbX, dbY, dbZ;
Pt3d ptCurrentFeaturePoint = ptFeaturePoint;
//判断是否在视场前方
if (!IsInCameraFrontArea(ptCurrentFeaturePoint, pRotateMatrix, cameraPara))
{
return(null);
}
dbX = pRotateMatrix.getNum(0, 0) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 0) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
+ pRotateMatrix.getNum(2, 0) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
dbY = pRotateMatrix.getNum(0, 1) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 1) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
+ pRotateMatrix.getNum(2, 1) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
dbZ = pRotateMatrix.getNum(0, 2) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 2) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
+ pRotateMatrix.getNum(2, 2) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
Pt2d ptImageTmp = new Pt2d();
ptImageTmp.X = (int)Math.Round(-cameraPara.dFocus * dbX / dbZ);
ptImageTmp.Y = (int)Math.Round(-cameraPara.dFocus * dbY / dbZ);
//ptImageTmp.Y *= -1;
//像主点坐标系===>笛卡尔坐标系（以东为X，以北为Y）
ptImageTmp.X += cameraPara.dPx;
ptImageTmp.Y += (-1 * cameraPara.dPy);
//ptImageTmp.Y *= -1;
//arcgis显示时把左上角放于原点
//ptImageTmp.Y -= cameraPara.nH;
return(ptImageTmp);
}
return(null);
}
// private void CopyFeatureField(IFeature pFt, IFeatureBuffer pFtNew)
// {
// object o = Type.Missing;
// IFields pFlds = pFt.Fields;
// IFields pFldsNew = pFtNew.Fields;
// int nCount = pFlds.FieldCount;
// for (int i = 0; i < nCount; i++)
// {
// if (pFlds.get_Field(i).Type != esriFieldType.esriFieldTypeGeometry &&
// pFlds.get_Field(i).Type != esriFieldType.esriFieldTypeOID)
// {
// object ob = pFt.get_Value(i);
// if(!pFlds.get_Field(i).Editable)
// continue;
//
// string szOb = ob as string;
// if (szOb == null || string.IsNullOrEmpty(szOb))
// {
// if (pFldsNew.get_Field(i).IsNullable)
// {
// pFtNew.set_Value(i, ob);
// }
// else
// pFtNew.set_Value(i, o);
// }
// else
// {
// //if (pFldsNew.get_Field(i).IsNullable)
// //{
// // pFtNew.set_Value(i, ob);
// //}
//
// pFtNew.set_Value(i, ob);
// }
// }
// }
// }
//public bool projectBackward(string szInputShpFilename, string szDemFilename, string szXmlFilename, string szOutShpFilename)
//{
// if (string.IsNullOrEmpty(szInputShpFilename) || string.IsNullOrEmpty(szDemFilename) || string.IsNullOrEmpty(szXmlFilename) || string.IsNullOrEmpty(szOutShpFilename))
// return false;
// ClsGDBDataCommon processDataCommon = new ClsGDBDataCommon();
// string strInputPath = System.IO.Path.GetDirectoryName(szInputShpFilename);
// string strInputName = System.IO.Path.GetFileName(szInputShpFilename);
// #region 读取SHP文件
// IWorkspace pWorkspace = processDataCommon.OpenFromShapefile(strInputPath);
// IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
// IFeatureClass pInputFC = pFeatureWorkspace.OpenFeatureClass(strInputName);
// #endregion
// #region 读取DEM文件
// IRasterLayer pRasterLayer = new RasterLayerClass();
// pRasterLayer.CreateFromFilePath(szDemFilename);
// IRaster pDemRaster = pRasterLayer.Raster;
// IRasterProps pDemRasterProps=pDemRaster as IRasterProps;
// #endregion
// #region 得到节点信息
// List<List<Pt3d>> ptFeaturePoints = new List<List<Pt3d>>();
// List<IFeature> pFeatureList=new List<IFeature>();
// IFeatureCursor pFCursor = pInputFC.Search(null, false);
// IFeature pFeature = null;// pFCursor.NextFeature();
// while ((pFeature = pFCursor.NextFeature()) != null)
// {
// IPolyline pPolyline = pFeature.Shape as IPolyline;
// if (pPolyline == null)
// {
// //pFeature = pFCursor.NextFeature();
// continue;
// }
// IPointCollection pPtCol = pPolyline as IPointCollection;
// List<Pt3d> ptSingleFeaturePoints = new List<Pt3d>();
// int nGeoRange = Convert.ToInt32(pDemRasterProps.MeanCellSize().X * 10);
// Pt2i ptLeftTop=new Pt2i();
// ClsGetCameraView getCameraView = new ClsGetCameraView();
// for (int i = 0; i < pPtCol.PointCount; i++)
// {
// IPoint pPt = pPtCol.get_Point(i);
// Pt3d ptFeaturePoint = new Pt3d();
// ptFeaturePoint.X = pPt.X;
// ptFeaturePoint.Y = pPt.Y;
// //从DEM上得到相应高程
// double[,] dbSubData=getCameraView.getSubDem(pDemRaster, ptFeaturePoint, nGeoRange, ref ptLeftTop);
// if (dbSubData == null)
// continue;
// if (getCameraView.GetGeoZ(pDemRaster, dbSubData, ptLeftTop, pPt.X, pPt.Y, ref ptFeaturePoint.Z))
// {
// ptSingleFeaturePoints.Add(ptFeaturePoint);
// }
// }
// IFeature pTmpFeature=pFeature;
// pFeatureList.Add(pTmpFeature);
// ptFeaturePoints.Add(ptSingleFeaturePoints);
// //pFeature = pFCursor.NextFeature();
// }
// #endregion
// #region 读取相机姿态参数
// ClsCameraPara cameraPara = ParseXmlFileToGetPara(szXmlFilename);
// if (cameraPara == null)
// return false;
// //根据姿态参数获得旋转矩阵
// OriAngle oriAngle = new OriAngle();
// Matrix pRotateMatrix = new Matrix(3, 3);
// oriAngle.kap = cameraPara.dKappa;
// oriAngle.omg = cameraPara.dOmg;
// oriAngle.phi = cameraPara.dPhi;
// if (!ClsGetCameraView.OPK2RMat(oriAngle, ref pRotateMatrix))
// return false;
// #endregion
// #region 创建输出SHP文件
// string strOutputPath = System.IO.Path.GetDirectoryName(szOutShpFilename);
// string strOutputName = System.IO.Path.GetFileName(szOutShpFilename);
// IFields pFields = pInputFC.Fields;
// //设置空间参考
// ISpatialReference pSpatialRef = new UnknownCoordinateSystemClass();//没有这一句就报错，说尝试读取或写入受保护的内存。
// pSpatialRef.SetDomain(-8000000, 8000000, -8000000, 8000000);//没有这句就抛异常来自HRESULT：0x8004120E。
// pSpatialRef.SetZDomain(-8000000, 8000000);
// IFeatureClass pOutputFC = processDataCommon.CreateShapefile(strOutputPath, strOutputName, pFields, pSpatialRef);
// if (pOutputFC == null)
// {
// return false;
// }
// #endregion
// #region 节点位置反投影
// List<List<Pt2d>> ptImageFeaturePoints = new List<List<Pt2d>>();
// for (int i = 0; i < ptFeaturePoints.Count; i++)
// {
// int nCount = ptFeaturePoints[i].Count;
// List<Pt2d> ptSingleImageFeaturePoints = new List<Pt2d>();
// for (int j = 0; j < nCount; j++)
// {
// Pt3d ptCurrentFeaturePoint = ptFeaturePoints[i][j];
// double dbX, dbY, dbZ;
// dbX = pRotateMatrix.getNum(0, 0) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 0) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
// + pRotateMatrix.getNum(2, 0) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
// dbY = pRotateMatrix.getNum(0, 1) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 1) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
// + pRotateMatrix.getNum(2, 1) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
// dbZ = pRotateMatrix.getNum(0, 2) * (ptCurrentFeaturePoint.X - cameraPara.dX) + pRotateMatrix.getNum(1, 2) * (ptCurrentFeaturePoint.Y - cameraPara.dY)
// + pRotateMatrix.getNum(2, 2) * (ptCurrentFeaturePoint.Z - cameraPara.dZ);
// Pt2d ptImageTmp = new Pt2d();
// ptImageTmp.X = (int)Math.Round(-cameraPara.dFocus * dbX / dbZ);
// ptImageTmp.Y = (int)Math.Round(-cameraPara.dFocus * dbY / dbZ);
// //ptImageTmp.Y *= -1;
// ptImageTmp.X += 512;
// ptImageTmp.Y += 512;
// ptImageTmp.Y -= 1024;
// ptSingleImageFeaturePoints.Add(ptImageTmp);
// }
// ptImageFeaturePoints.Add(ptSingleImageFeaturePoints);
// }
// #endregion
// #region 写入节点信息
// IDataset dataset = (IDataset)pOutputFC;
// IWorkspace workspace = dataset.Workspace;
// //Cast for an IWorkspaceEdit
// IWorkspaceEdit workspaceEdit = workspace as IWorkspaceEdit;
// workspaceEdit.StartEditing(true);
// workspaceEdit.StartEditOperation();
// IFeatureCursor pOutFCursor = null;
// //////////////////////////////////////////////////////////////////////////
// for (int i = 0; i < ptImageFeaturePoints.Count; i++)
// {
// int nPtsCount = ptImageFeaturePoints[i].Count;
// IFeatureBuffer pFeatureBuffer = pOutputFC.CreateFeatureBuffer();
// pOutFCursor = pOutputFC.Insert(true);
// IPolyline pPolyline = new PolylineClass();
// IPointCollection pPointCollection = pPolyline as IPointCollection;
// for (int j = 0; j < nPtsCount; j++)
// {
// IPoint pt = new PointClass();
// pt.PutCoords(ptImageFeaturePoints[i][j].X, ptImageFeaturePoints[i][j].Y);
// pPointCollection.AddPoint(pt);
// }
// CopyFeatureField(pFeatureList[i],pFeatureBuffer);
// pFeatureBuffer.Shape = pPolyline as IGeometry;
// object featureOID = pOutFCursor.InsertFeature(pFeatureBuffer);
// }
// pOutFCursor.Flush();
// //featureCursor.Flush();
// workspaceEdit.StopEditOperation();
// workspaceEdit.StopEditing(true);
// #endregion
// return true;
//}
private bool IsInCameraFrontArea(Pt3d ptObj, Matrix pRotateMatrix, ClsCameraPara cameraPara)
{
////判断当前路径点是否在相机的可视范围内 视场角范围(-90, 90)，即在相平面的前方
double dbCameraX = cameraPara.dX;
double dbCameraY = cameraPara.dY;
double dbCameraZ = cameraPara.dZ;
double dbDeltaY = ptObj.Y - dbCameraY;
double dbDeltaX = ptObj.X - dbCameraX;
double dbDeltaZ = ptObj.Z - dbCameraZ;
//物方向量
Matrix matrixObjectToCamera = new Matrix(3, 1);
matrixObjectToCamera.SetNum(0, 0, dbDeltaX);
matrixObjectToCamera.SetNum(1, 0, dbDeltaY);
matrixObjectToCamera.SetNum(2, 0, dbDeltaZ);
//主点向量转到物方
Matrix matrixFocus = new Matrix(3, 1);
matrixFocus.SetNum(0, 0, 0);
matrixFocus.SetNum(1, 0, 0);
matrixFocus.SetNum(2, 0, -1.0 * cameraPara.dFocus);
Matrix matrixFocusToObject = pRotateMatrix.Mutiply(pRotateMatrix, matrixFocus);
//点乘
double dbValue = matrixObjectToCamera.getNum(0, 0) * matrixFocusToObject.getNum(0, 0) +
matrixObjectToCamera.getNum(1, 0) * matrixFocusToObject.getNum(1, 0) +
matrixObjectToCamera.getNum(2, 0) * matrixFocusToObject.getNum(2, 0);
return(dbValue > 0);
//try
//{
// //计算以东朝向为准的方位角 [0, 2*PI]
// // 返回结果:
// // 角度 θ，以弧度为单位，满足 -π≤θ≤π，且 tan(θ) = y / x，其中 (x, y) 是笛卡尔平面中的一个点。请看下面：如果 (x,
// // y) 在第 1 象限，则 0 < θ < π/2。如果 (x, y) 在第 2 象限，则 π/2 < θ≤π。如果 (x, y) 在第 3 象限，则
// // -π < θ < -π/2。如果 (x, y) 在第 4 象限，则 -π/2 < θ < 0。如果点在象限的边界上，则返回值如下：如果 y 为 0
// // 并且 x 不为负值，则 θ = 0。如果 y 为 0 并且 x 为负值，则 θ = π。如果 y 为正值并且 x 为 0，则 θ = π/2。如果
// // y 负值并且 x 为 0，则 θ = -π/2。
// double dbAzimuth = Math.Atan2(dbDeltaY, dbDeltaX);
// if (dbDeltaY < 0) //第三第四象限
// dbAzimuth += (2 * Math.PI);
// //KAPPA+PI/2的原因：相机方位以北为0度，逆时针增加；而方位角以东为0度，逆时针增加，两者恒差90
// double dbDeltaAngle = Math.Abs(dbAzimuth - (cameraPara.dKappa + Math.PI / 2));
// if (dbDeltaAngle > (Math.PI / 2))
// return null;
//}
//catch (System.Exception ex)
//{
// return null;
//}
}
private bool GetCameraParaFromXml(string strFile, ClsCameraPara para)
{
//从文件中读取数据
return(true);
}
public bool projectBackward(IFeatureClass pInputFeatureClass, IRasterLayer pDemLayer, string szXmlFilename,
ref IFeatureClass pOutputPolylineFeatureClass, ref IFeatureClass pOutputPointFeatureClass)
{
if (pInputFeatureClass == null || pDemLayer == null || string.IsNullOrEmpty(szXmlFilename) || pOutputPointFeatureClass == null || pOutputPolylineFeatureClass == null)
{
return(false);
}
#region 读取DEM文件
IRasterLayer pRasterLayer = pDemLayer;// new RasterLayerClass();
//pRasterLayer.CreateFromFilePath(szDemFilename);
IRaster pDemRaster = pRasterLayer.Raster;
IRasterProps pDemRasterProps = pDemRaster as IRasterProps;
#endregion
#region 读取相机姿态参数
ClsCameraPara cameraPara = ParseXmlFileToGetPara(szXmlFilename);
if (cameraPara == null)
{
return(false);
}
//根据姿态参数获得旋转矩阵
OriAngle oriAngle = new OriAngle();
Matrix pRotateMatrix = new Matrix(3, 3);
oriAngle.kap = cameraPara.dKappa;
oriAngle.omg = cameraPara.dOmg;
oriAngle.phi = cameraPara.dPhi;
if (!ClsGetCameraView.OPK2RMat(oriAngle, ref pRotateMatrix))
{
return(false);
}
#endregion
#region 得到曲线信息
List <ISegmentCollection> pSegmentCollection = new List <ISegmentCollection>();
List <IFeature> pFeatureList = new List <IFeature>();
IFeatureCursor pFCursor = pInputFeatureClass.Search(null, false);
IFeature pFeature = null;// pFCursor.NextFeature();
while ((pFeature = pFCursor.NextFeature()) != null)
{
IPolyline pPolyline = pFeature.Shape as IPolyline;
if (pPolyline == null)
{
//pFeature = pFCursor.NextFeature();
continue;
}
IFeature pTmpFeature = pFeature;
pFeatureList.Add(pTmpFeature);
ISegmentCollection pCurrentSegmentCollection = pPolyline as ISegmentCollection;
pSegmentCollection.Add(pCurrentSegmentCollection);
}
#endregion
#region 节点位置反投影
List <List <Pt2d> > ptImageFeaturePoints = new List <List <Pt2d> >();
List <List <Pt2d> > ptImageFeaturePointsForPointShp = new List <List <Pt2d> >();
ClsGetCameraView pGetCameraView = new ClsGetCameraView();
for (int i = 0; i < pSegmentCollection.Count; i++)
{
List <Pt2d> ptSingleImageFeaturePoints = new List <Pt2d>();
List <Pt2d> ptSingleImageFeaturePointsForPointShp = new List <Pt2d>();
for (int j = 0; j < pSegmentCollection[i].SegmentCount; j++)
{
ISegment pCurrentSegment = pSegmentCollection[i].get_Segment(j);
if (pCurrentSegment == null)
{
continue;
}
//直线
if (pCurrentSegment.GeometryType == esriGeometryType.esriGeometryLine)
{
ILine pLine = pCurrentSegment as ILine;
//起始点
IPoint ptFrom = pLine.FromPoint;
Pt2d ptFrom2d = getProjectBackwardPoint(ptFrom, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptFrom2d != null)
{
ptSingleImageFeaturePoints.Add(ptFrom2d);
ptSingleImageFeaturePointsForPointShp.Add(ptFrom2d);
}
//终止点
IPoint ptTo = pLine.ToPoint;
Pt2d ptTo2d = getProjectBackwardPoint(ptTo, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptTo2d != null)
{
if (j == pSegmentCollection[i].SegmentCount - 1) //最后一条直线段
{
ptSingleImageFeaturePointsForPointShp.Add(ptTo2d);
ptSingleImageFeaturePoints.Add(ptTo2d);
}
}
}
else if (pCurrentSegment.GeometryType == esriGeometryType.esriGeometryCircularArc) //圆弧
{
ICircularArc pCircularArc = pCurrentSegment as ICircularArc;
double dbCurveLength = pCircularArc.Length;
int nCount = 15;
double dbOffset = dbCurveLength / nCount;
for (int nCurrent = 0; nCurrent <= nCount; nCurrent++)
{
IPoint ptCurrent = new Point();
pCircularArc.QueryPoint(esriSegmentExtension.esriNoExtension, nCurrent * dbOffset, false, ptCurrent);
Pt2d ptCurrentImagePoint = getProjectBackwardPoint(ptCurrent, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptCurrentImagePoint != null)
{
ptSingleImageFeaturePoints.Add(ptCurrentImagePoint);
//只保留端点的信息，用于创建点SHP图层
if (nCurrent == 0 || nCurrent == nCount)
{
ptSingleImageFeaturePointsForPointShp.Add(ptCurrentImagePoint);
}
}
}
}
else
{
continue;
}
}
ptImageFeaturePoints.Add(ptSingleImageFeaturePoints);
ptImageFeaturePointsForPointShp.Add(ptSingleImageFeaturePointsForPointShp);
}
#endregion
#region 把节点位置信息写入
IDataset dataset = (IDataset)pOutputPolylineFeatureClass;
IWorkspace workspace = dataset.Workspace;
//Cast for an IWorkspaceEdit
IWorkspaceEdit workspaceEdit = workspace as IWorkspaceEdit;
workspaceEdit.StartEditing(true);
workspaceEdit.StartEditOperation();
//////////////////////////////////////////////////////////////////////////
//整条路线的添加
IFeatureCursor pOutFCursor = null;
for (int i = 0; i < ptImageFeaturePoints.Count; i++)
{
int nPtsCount = ptImageFeaturePoints[i].Count;
IFeatureBuffer pFeatureBuffer = pOutputPolylineFeatureClass.CreateFeatureBuffer();
pOutFCursor = pOutputPolylineFeatureClass.Insert(true);
IPolyline pPolyline = new PolylineClass();
IPointCollection pPointCollection = pPolyline as IPointCollection;
for (int j = 0; j < nPtsCount; j++)
{
IPoint pt = new PointClass();
pt.PutCoords(ptImageFeaturePoints[i][j].X, ptImageFeaturePoints[i][j].Y);
pPointCollection.AddPoint(pt);
}
if (!ClsGDBDataCommon.CopyFeatureFieldValue(pFeatureList[i], pFeatureBuffer as IFeature))
{
continue;
}
pFeatureBuffer.Shape = pPolyline as IGeometry;
object featureOID = pOutFCursor.InsertFeature(pFeatureBuffer);
}
if (pOutFCursor != null)
{
pOutFCursor.Flush();
}
//分段路线的添加
for (int i = 0; i < ptImageFeaturePoints.Count; i++)
{
int nPtsCount = ptImageFeaturePoints[i].Count;
for (int j = 0; j < nPtsCount - 1; j++)
{
IFeatureBuffer pFeatureBuffer = pOutputPolylineFeatureClass.CreateFeatureBuffer();
pOutFCursor = pOutputPolylineFeatureClass.Insert(true);
IPolyline pPolyline = new PolylineClass();
IPointCollection pPointCollection = pPolyline as IPointCollection;
IPoint pt = new PointClass();
pt.PutCoords(ptImageFeaturePoints[i][j].X, ptImageFeaturePoints[i][j].Y);
pPointCollection.AddPoint(pt);
pt.PutCoords(ptImageFeaturePoints[i][j + 1].X, ptImageFeaturePoints[i][j + 1].Y);
pPointCollection.AddPoint(pt);
if (!ClsGDBDataCommon.CopyFeatureFieldValue(pFeatureList[i], pFeatureBuffer as IFeature))
{
continue;
}
pFeatureBuffer.Shape = pPolyline as IGeometry;
object featureOID = pOutFCursor.InsertFeature(pFeatureBuffer);
}
}
if (pOutFCursor != null)
{
pOutFCursor.Flush();
}
//featureCursor.Flush();
workspaceEdit.StopEditOperation();
workspaceEdit.StopEditing(true);
#endregion
#region 点SHP文件的添加
IDataset pPointDataset = (IDataset)pOutputPointFeatureClass;
IWorkspace pPointWorkspace = pPointDataset.Workspace;
//Cast for an IWorkspaceEdit
IWorkspaceEdit pPointWorkspaceEdit = pPointWorkspace as IWorkspaceEdit;
pPointWorkspaceEdit.StartEditing(true);
pPointWorkspaceEdit.StartEditOperation();
IFeatureCursor pOutPointFCursor = null;
for (int i = 0; i < ptImageFeaturePointsForPointShp.Count; i++)
{
//int nSegmentCount = pSegmentCollection[i].SegmentCount;
//IMultipoint pMultiPoint = new MultipointClass();
for (int j = 0; j < ptImageFeaturePointsForPointShp[i].Count; j++)
{
IFeatureBuffer pFeatureBuffer = pOutputPointFeatureClass.CreateFeatureBuffer();
pOutPointFCursor = pOutputPointFeatureClass.Insert(true);
IPoint pt = new PointClass();
Pt2d pt2d = ptImageFeaturePointsForPointShp[i][j];
pt.PutCoords(pt2d.X, pt2d.Y);
//CopyFeatureField(pFeatureList[i], pFeatureBuffer);
pFeatureBuffer.Shape = pt as IGeometry;
object featureOID = pOutPointFCursor.InsertFeature(pFeatureBuffer);
}
}
if (pOutPointFCursor != null)
{
pOutPointFCursor.Flush();
}
//featureCursor.Flush();
pPointWorkspaceEdit.StopEditOperation();
pPointWorkspaceEdit.StopEditing(true);
#endregion
return(true);
}
public bool projectBackward(string szInputShpFilename, IRasterLayer pDemLayer, string szXmlFilename, string szOutShpFilename)
{
if (string.IsNullOrEmpty(szInputShpFilename) || pDemLayer == null || string.IsNullOrEmpty(szXmlFilename) || string.IsNullOrEmpty(szOutShpFilename))
{
return(false);
}
ClsGDBDataCommon processDataCommon = new ClsGDBDataCommon();
string strInputPath = System.IO.Path.GetDirectoryName(szInputShpFilename);
string strInputName = System.IO.Path.GetFileName(szInputShpFilename);
#region 读取SHP文件
IWorkspace pWorkspace = processDataCommon.OpenFromShapefile(strInputPath);
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
IFeatureClass pInputFC = pFeatureWorkspace.OpenFeatureClass(strInputName);
#endregion
#region 读取DEM文件
IRasterLayer pRasterLayer = pDemLayer;// new RasterLayerClass();
//pRasterLayer.CreateFromFilePath(szDemFilename);
IRaster pDemRaster = pRasterLayer.Raster;
IRasterProps pDemRasterProps = pDemRaster as IRasterProps;
#endregion
#region 得到曲线信息
List <ISegmentCollection> pSegmentCollection = new List <ISegmentCollection>();
List <IFeature> pFeatureList = new List <IFeature>();
IFeatureCursor pFCursor = pInputFC.Search(null, false);
IFeature pFeature = null;// pFCursor.NextFeature();
while ((pFeature = pFCursor.NextFeature()) != null)
{
IPolyline pPolyline = pFeature.Shape as IPolyline;
if (pPolyline == null)
{
//pFeature = pFCursor.NextFeature();
continue;
}
IFeature pTmpFeature = pFeature;
pFeatureList.Add(pTmpFeature);
ISegmentCollection pCurrentSegmentCollection = pPolyline as ISegmentCollection;
pSegmentCollection.Add(pCurrentSegmentCollection);
}
#endregion
#region 读取相机姿态参数
ClsCameraPara cameraPara = ParseXmlFileToGetPara(szXmlFilename);
if (cameraPara == null)
{
return(false);
}
//根据姿态参数获得旋转矩阵
OriAngle oriAngle = new OriAngle();
Matrix pRotateMatrix = new Matrix(3, 3);
oriAngle.kap = cameraPara.dKappa;
oriAngle.omg = cameraPara.dOmg;
oriAngle.phi = cameraPara.dPhi;
if (!ClsGetCameraView.OPK2RMat(oriAngle, ref pRotateMatrix))
{
return(false);
}
#endregion
#region 创建输出SHP文件
string strOutputPath = System.IO.Path.GetDirectoryName(szOutShpFilename);
string strOutputName = System.IO.Path.GetFileName(szOutShpFilename);
string strPointOutputName = System.IO.Path.GetFileNameWithoutExtension(szOutShpFilename) + "_point" + System.IO.Path.GetExtension(szOutShpFilename);
//设置空间参考
ISpatialReference pSpatialRef = new UnknownCoordinateSystemClass(); //没有这一句就报错，说尝试读取或写入受保护的内存。
pSpatialRef.SetDomain(MIN_INT, MAX_INT, MIN_INT, MAX_INT); //没有这句就抛异常来自HRESULT：0x8004120E。
pSpatialRef.SetZDomain(MIN_INT, MAX_INT);
//创建POLYLINE文件的字段
IFields pFields = pInputFC.Fields;
//创建点SHP文件的字段
IFields pPointFields = new FieldsClass();
IFieldsEdit pFieldsEdit = (IFieldsEdit)pPointFields;
//设置字段
IField pField = new FieldClass();
IFieldEdit pFieldEdit = (IFieldEdit)pField;
//创建类型为几何类型的字段
pFieldEdit.Name_2 = "shape";
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
IGeometryDef pGeoDef = new GeometryDefClass();
IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;
pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
pGeoDefEdit.HasM_2 = false;
pGeoDefEdit.HasZ_2 = false;
pGeoDefEdit.SpatialReference_2 = pSpatialRef;
//pFieldEdit.Name_2 = "SHAPE";
//pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
pFieldEdit.GeometryDef_2 = pGeoDef;
pFieldEdit.IsNullable_2 = true;
pFieldEdit.Required_2 = true;
pFieldsEdit.AddField(pField);
IFeatureClass pOutputFC = processDataCommon.CreateShapefile(strOutputPath, strOutputName, pFields, pSpatialRef);
IFeatureClass pOutputPointFC = processDataCommon.CreateShapefile(strOutputPath, strPointOutputName, pPointFields, pSpatialRef);
if (pOutputFC == null || pOutputPointFC == null)
{
return(false);
}
#endregion
#region 节点位置反投影
List <List <Pt2d> > ptImageFeaturePoints = new List <List <Pt2d> >();
List <List <Pt2d> > ptImageFeaturePointsForPointShp = new List <List <Pt2d> >();
ClsGetCameraView pGetCameraView = new ClsGetCameraView();
for (int i = 0; i < pSegmentCollection.Count; i++)
{
List <Pt2d> ptSingleImageFeaturePoints = new List <Pt2d>();
List <Pt2d> ptSingleImageFeaturePointsForPointShp = new List <Pt2d>();
for (int j = 0; j < pSegmentCollection[i].SegmentCount; j++)
{
ISegment pCurrentSegment = pSegmentCollection[i].get_Segment(j);
if (pCurrentSegment == null)
{
continue;
}
//直线
if (pCurrentSegment.GeometryType == esriGeometryType.esriGeometryLine)
{
ILine pLine = pCurrentSegment as ILine;
//起始点
IPoint ptFrom = pLine.FromPoint;
Pt2d ptFrom2d = getProjectBackwardPoint(ptFrom, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptFrom2d != null)
{
ptSingleImageFeaturePoints.Add(ptFrom2d);
ptSingleImageFeaturePointsForPointShp.Add(ptFrom2d);
}
//终止点
IPoint ptTo = pLine.ToPoint;
Pt2d ptTo2d = getProjectBackwardPoint(ptTo, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptTo2d != null)
{
ptSingleImageFeaturePoints.Add(ptTo2d);
if (j == pSegmentCollection[i].SegmentCount - 1) //最后一条直线段
{
ptSingleImageFeaturePointsForPointShp.Add(ptTo2d);
}
}
}
else if (pCurrentSegment.GeometryType == esriGeometryType.esriGeometryCircularArc) //圆弧
{
ICircularArc pCircularArc = pCurrentSegment as ICircularArc;
double dbCurveLength = pCircularArc.Length;
int nCount = 15;
double dbOffset = dbCurveLength / nCount;
for (int nCurrent = 0; nCurrent < nCount; nCurrent++)
{
IPoint ptCurrent = new Point();
pCircularArc.QueryPoint(esriSegmentExtension.esriNoExtension, nCurrent * dbOffset, false, ptCurrent);
Pt2d ptCurrentImagePoint = getProjectBackwardPoint(ptCurrent, pDemRaster, pGetCameraView, pRotateMatrix, cameraPara);
if (ptCurrentImagePoint != null)
{
ptSingleImageFeaturePoints.Add(ptCurrentImagePoint);
//只保留端点的信息，用于创建点SHP图层
if (nCurrent == 0 || nCurrent == nCount - 1)
{
ptSingleImageFeaturePointsForPointShp.Add(ptCurrentImagePoint);
}
}
}
}
else
{
continue;
}
}
ptImageFeaturePoints.Add(ptSingleImageFeaturePoints);
ptImageFeaturePointsForPointShp.Add(ptSingleImageFeaturePointsForPointShp);
}
#endregion
#region 写入POLYLINE节点信息
IDataset dataset = (IDataset)pOutputFC;
IWorkspace workspace = dataset.Workspace;
//Cast for an IWorkspaceEdit
IWorkspaceEdit workspaceEdit = workspace as IWorkspaceEdit;
workspaceEdit.StartEditing(true);
workspaceEdit.StartEditOperation();
//////////////////////////////////////////////////////////////////////////
//整条路线的添加
IFeatureCursor pOutFCursor = null;
for (int i = 0; i < ptImageFeaturePoints.Count; i++)
{
int nPtsCount = ptImageFeaturePoints[i].Count;
IFeatureBuffer pFeatureBuffer = pOutputFC.CreateFeatureBuffer();
pOutFCursor = pOutputFC.Insert(true);
IPolyline pPolyline = new PolylineClass();
IPointCollection pPointCollection = pPolyline as IPointCollection;
for (int j = 0; j < nPtsCount; j++)
{
IPoint pt = new PointClass();
pt.PutCoords(ptImageFeaturePoints[i][j].X, ptImageFeaturePoints[i][j].Y);
pPointCollection.AddPoint(pt);
}
if (!ClsGDBDataCommon.CopyFeatureFieldValue(pFeatureList[i], pFeatureBuffer as IFeature))
{
continue;
}
pFeatureBuffer.Shape = pPolyline as IGeometry;
object featureOID = pOutFCursor.InsertFeature(pFeatureBuffer);
}
pOutFCursor.Flush();
//分段路线的添加
for (int i = 0; i < ptImageFeaturePoints.Count; i++)
{
int nPtsCount = ptImageFeaturePoints[i].Count;
for (int j = 0; j < nPtsCount - 1; j++)
{
IFeatureBuffer pFeatureBuffer = pOutputFC.CreateFeatureBuffer();
pOutFCursor = pOutputFC.Insert(true);
IPolyline pPolyline = new PolylineClass();
IPointCollection pPointCollection = pPolyline as IPointCollection;
IPoint pt = new PointClass();
pt.PutCoords(ptImageFeaturePoints[i][j].X, ptImageFeaturePoints[i][j].Y);
pPointCollection.AddPoint(pt);
pt.PutCoords(ptImageFeaturePoints[i][j + 1].X, ptImageFeaturePoints[i][j + 1].Y);
pPointCollection.AddPoint(pt);
if (!ClsGDBDataCommon.CopyFeatureFieldValue(pFeatureList[i], pFeatureBuffer as IFeature))
{
continue;
}
pFeatureBuffer.Shape = pPolyline as IGeometry;
object featureOID = pOutFCursor.InsertFeature(pFeatureBuffer);
}
}
pOutFCursor.Flush();
//featureCursor.Flush();
workspaceEdit.StopEditOperation();
workspaceEdit.StopEditing(true);
#endregion
#region 点SHP文件的添加
IDataset pPointDataset = (IDataset)pOutputPointFC;
IWorkspace pPointWorkspace = pPointDataset.Workspace;
//Cast for an IWorkspaceEdit
IWorkspaceEdit pPointWorkspaceEdit = pPointWorkspace as IWorkspaceEdit;
pPointWorkspaceEdit.StartEditing(true);
pPointWorkspaceEdit.StartEditOperation();
IFeatureCursor pOutPointFCursor = null;
for (int i = 0; i < ptImageFeaturePointsForPointShp.Count; i++)
{
//int nSegmentCount = pSegmentCollection[i].SegmentCount;
//IMultipoint pMultiPoint = new MultipointClass();
for (int j = 0; j < ptImageFeaturePointsForPointShp[i].Count; j++)
{
IFeatureBuffer pFeatureBuffer = pOutputPointFC.CreateFeatureBuffer();
pOutPointFCursor = pOutputPointFC.Insert(true);
IPoint pt = new PointClass();
Pt2d pt2d = ptImageFeaturePointsForPointShp[i][j];
pt.PutCoords(pt2d.X, pt2d.Y);
//CopyFeatureField(pFeatureList[i], pFeatureBuffer);
pFeatureBuffer.Shape = pt as IGeometry;
object featureOID = pOutPointFCursor.InsertFeature(pFeatureBuffer);
}
}
pOutPointFCursor.Flush();
//featureCursor.Flush();
pPointWorkspaceEdit.StopEditOperation();
pPointWorkspaceEdit.StopEditing(true);
#endregion
return(true);
}
public ClsCameraPara ParseXmlFileToGetPara(string szFilename)
{
try
{
ClsCameraPara result = new ClsCameraPara();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(szFilename);
XmlNode cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dX");
if (cs != null)
{
result.dX = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dY");
if (cs != null)
{
result.dY = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dZ");
if (cs != null)
{
result.dZ = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dPhi");
if (cs != null)
{
result.dPhi = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dOmg");
if (cs != null)
{
result.dOmg = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/ExtPara/dKappa");
if (cs != null)
{
result.dKappa = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/dFocus");
if (cs != null)
{
result.dFocus = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/dPx");
if (cs != null)
{
result.dPx = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/dPy");
if (cs != null)
{
result.dPy = double.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/nW");
if (cs != null)
{
result.nW = int.Parse(cs.InnerText);
}
cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/nH");
if (cs != null)
{
result.nH = int.Parse(cs.InnerText);
}
//cs = xmlDoc.SelectSingleNode(@"CameraPara/InePara/szImageName");
//if (cs != null)
//{
// result.szImageName = cs.InnerText;
//}
return(result);
}
catch (System.Exception ex)
{
return(null);
}
}
public void calImagePos(IRaster pRaster, Pt2d[] ptGeoPos, string szXmlFile, out Pt2d[] ptImagePos)
{
ptImagePos = null;
if (pRaster == null)
{
return;
}
try
{
ClsCameraPara cameraPara = ParseXmlFileToGetPara(szXmlFile);
if (cameraPara == null)
{
return;
}
ClsGetCameraView getCameraView = new ClsGetCameraView();
Pt2i ptLeftTop = new Pt2i();
IRasterProps pProps = pRaster as IRasterProps;
int nWidth = pProps.Width;
int nHeight = pProps.Height;
double[,] dbData = new double[nWidth, nHeight];
Point2D ptTmpLeftTop = new Point2D();
ptTmpLeftTop.X = 0;
ptTmpLeftTop.Y = 0;
if (!getCameraView.readBlockDataToFile(ptTmpLeftTop, ref dbData, pRaster))
{
return;
}
//double[,] dbData = getCameraView.getSubDem(pRaster, new Pt3d(), 0, ref ptLeftTop);
int nCount = ptGeoPos.Length;
ptImagePos = new Pt2d[nCount];
for (int i = 0; i < nCount; i++)
{
Pt2d pt2d = new Pt2d();
OriAngle oriAngle = new OriAngle();
oriAngle.kap = cameraPara.dKappa;
oriAngle.omg = cameraPara.dOmg;
oriAngle.phi = cameraPara.dPhi;
Matrix pRMat = new Matrix(3, 3);
ClsGetCameraView.OPK2RMat(oriAngle, ref pRMat);
double dbTmpZ = double.NaN;
getCameraView.GetGeoZ(pRaster, dbData, ptLeftTop, ptGeoPos[i].X, ptGeoPos[i].Y, ref dbTmpZ);
if (dbTmpZ == double.NaN)
{
ptImagePos[i] = null;
continue;
}
double dbX, dbY, dbZ;
dbX = pRMat.getNum(0, 0) * (ptGeoPos[i].X - cameraPara.dX) + pRMat.getNum(1, 0) * (ptGeoPos[i].Y - cameraPara.dY)
+ pRMat.getNum(2, 0) * (dbTmpZ - cameraPara.dZ);
dbY = pRMat.getNum(0, 1) * (ptGeoPos[i].X - cameraPara.dX) + pRMat.getNum(1, 1) * (ptGeoPos[i].Y - cameraPara.dY)
+ pRMat.getNum(2, 1) * (dbTmpZ - cameraPara.dZ);
dbZ = pRMat.getNum(0, 2) * (ptGeoPos[i].X - cameraPara.dX) + pRMat.getNum(1, 2) * (ptGeoPos[i].Y - cameraPara.dY)
+ pRMat.getNum(2, 2) * (dbTmpZ - cameraPara.dZ);
Pt2d ptImageTmp = new Pt2d();
ptImageTmp.X = (int)Math.Round(-cameraPara.dFocus * dbX / dbZ);
ptImageTmp.Y = (int)Math.Round(-cameraPara.dFocus * dbY / dbZ);
ptImagePos[i] = ptImageTmp;
}
return;
}
catch (System.Exception ee)
{
MessageBox.Show(ee.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
