private void ProcessPolyline(IPolyline polyline, IFeatureClass outFeatureClass, int scale, int frameRate = 60, double lineLengthInPixel = 5, double intervalInPixel = 10, ISpatialReference spatialReference = null)
{
if (spatialReference == null)
{
spatialReference = Get3857Sr();
}
var pixelLength = PixelLengthAtScale(polyline.Length, scale, 96);
double lineLength = LengthAtScaleOfPixelLength(lineLengthInPixel, scale);
double intervalLength = LengthAtScaleOfPixelLength(intervalInPixel, scale);
//too short
if (pixelLength < intervalInPixel)
{
}
else
{
for (int frame = 0; frame < frameRate; frame++)
{
Console.WriteLine($"SCALE:{scale}, FRAME:{frame}");
double startLengthOfEachDrawLine = 0 + (((double)frame) / ((double)frameRate)) * intervalLength;
while (startLengthOfEachDrawLine < polyline.Length)
{
var endPointLength = startLengthOfEachDrawLine + lineLength;
if (endPointLength >= polyline.Length)
{
endPointLength = polyline.Length;
}
polyline.GetSubcurve(startLengthOfEachDrawLine, endPointLength, false, out ICurve curve);
IFeature createdFeature = outFeatureClass.CreateFeature();
createdFeature.Shape.SpatialReference = spatialReference;
createdFeature.Shape = (IPolyline)curve;
if (_indexOfFieldFrame >= 0)
{
try
{
createdFeature.Value[_indexOfFieldFrame] = frame;
}
catch (Exception)
{
}
}
if (_indexOfFieldScale >= 0)
{
try
{
createdFeature.Value[_indexOfFieldScale] = scale;
}
catch (Exception)
{
}
}
createdFeature.Store();
startLengthOfEachDrawLine += intervalLength;
}
}
}
;
}
/// <summary>
/// 获得回采多边形点列表，最后点为切眼中心点
/// </summary>
/// <params name="pline1"></巷道1>
/// <params name="pline2"></巷道2>
/// <params name="pline3"></切眼>
/// <params name="widthhd"></巷道宽度>
/// <params name="widthqy"></切眼宽度>
/// <params name="hcDis"></回采距离>
/// <params name="direct"></回采方向，pline3 from-to方向,返回1-切眼右侧, 返回-1-切眼左侧（），只在中间回采时使用此参数,开始回采时值为0>
/// <returns></returns>
public IPointCollection GetBackPolygonArea(IPolyline pline1, IPolyline pline2, IPolyline pline3, double widthhd, double widthhd1, double widthqy, double hcDis, int direct)
{
object obj = Type.Missing;
//ESRI.ArcGIS.Geometry.IPolyline polylineall = new ESRI.ArcGIS.Geometry.PolylineClass();
IPolyline offsetqy = null;
Boolean bright = false;
//交点1（切眼与巷道1交点）
IPoint point1 = GetIntersectPointExtend(pline3, pline1);
//交点2（切眼与巷道2交点）
IPoint point2 = GetIntersectPointExtend(pline3, pline2);
//CreateFeature(pline3, GetLayerByName("中心线全"));
int iDirect; //依据切眼与巷道的关系判断回采方向,切眼为巷道起点时使用
if (direct != 0) //中心点回采
{
IPoint outpnt = new PointClass();
iDirect = direct;
offsetqy = GetExtentQy(pline1, pline2, pline3);
}
else
{
iDirect = GetBackDirection(pline3, 200, pline1, pline2);
offsetqy = ConstructOffset(pline3, widthqy / 2.0 * iDirect);
} //切眼平移后的线
IPoint pointCent = ConstructMiddlePoint(offsetqy, offsetqy.Length / 2);//取平移后线的中点
//平移两侧巷道
//CreateFeature(pointCent, GetLayerByName("testpoint"));
//CreateFeature(offsetqy, GetLayerByName("中心线全"));
IPolyline offsethd1 = GetConstructOffsetHD(pline1, widthhd / 2, pointCent);
IPolyline offsethd2 = GetConstructOffsetHD(pline2, widthhd1 / 2, pointCent);
//取两条巷道与切眼交点
IPoint pnt1 = GetIntersectPoint(offsethd1, offsetqy);
IPoint pnt2 = GetIntersectPoint(offsethd2, offsetqy);
////理顺巷道线的方向
IPoint outpoint = new PointClass();
IPolyline offsethd1dir = GetPointPos(pline3.FromPoint, pline3.ToPoint, offsethd1, iDirect);
IPolyline offsethd2dir = GetPointPos(pline3.FromPoint, pline3.ToPoint, offsethd2, iDirect);
double dishd1 = 0; double alonghd1 = 0;
offsethd1dir.QueryPointAndDistance(esriSegmentExtension.esriNoExtension, pnt1, false, outpoint, ref alonghd1, ref dishd1, ref bright);
double dishd2 = 0; double alonghd2 = 0;
offsethd2dir.QueryPointAndDistance(esriSegmentExtension.esriNoExtension, pnt2, false, outpoint, ref alonghd2, ref dishd2, ref bright);
ICurve newhd1 = new PolylineClass();
offsethd1dir.GetSubcurve(alonghd1, hcDis + alonghd1, false, out newhd1);
ICurve newhd2 = new PolylineClass();
offsethd2dir.GetSubcurve(alonghd2, hcDis + alonghd2, false, out newhd2);
IPointCollection pntPolycol = new PolygonClass() as IPointCollection;
IPointCollection pntlinecol = newhd1 as IPointCollection;
int i = 0;
IPoint point = null;
for (i = 0; i < pntlinecol.PointCount; i++)
{
point = pntlinecol.get_Point(i);
pntPolycol.AddPoint(point, ref obj, ref obj);
}
pntlinecol = newhd2 as IPointCollection;
//取回采后切眼的中点
IPolyline polylineendqy = new PolylineClass();
if (point == null)
{
polylineendqy.FromPoint = point1;
polylineendqy.ToPoint = point2;
}
else
{
polylineendqy.FromPoint = point;
polylineendqy.ToPoint = pntlinecol.get_Point(pntlinecol.PointCount - 1);
}
IPoint pointendqyCent = ConstructMiddlePoint(polylineendqy, polylineendqy.Length / 2);//终点切眼的中点
for (i = pntlinecol.PointCount - 1; i >= 0; i--)
{
point = pntlinecol.get_Point(i);
pntPolycol.AddPoint(point, ref obj, ref obj);
}
pntPolycol.AddPoint(pointendqyCent, ref obj, ref obj);
return(pntPolycol);
}
private void btnok_Click(object sender, EventArgs e)
{
try
{
ILayer pLayer = null;
IRasterLayer pRlayer = null;
ITinLayer pTinlayer = null;
ISurface pSurface = null;
for (int i = 0; i < pMapControl.LayerCount; i++)
{
if (pMapControl.get_Layer(i).Name == cmblayer.SelectedItem.ToString())
{
pLayer = pMapControl.get_Layer(i);
}
}
if (pLayer is IRasterLayer)
{
pRlayer = pLayer as IRasterLayer;
IRasterSurface rasterSurf = new RasterSurfaceClass();
rasterSurf.PutRaster(pRlayer.Raster, 0);
pSurface = rasterSurf as ISurface;
}
else if (pLayer is ITinLayer)
{
pTinlayer = pLayer as ITinLayer;
ITin ptin = pTinlayer.Dataset;
pSurface = (ISurface)ptin;
}
IPolyline pPolyline = pFeature.ShapeCopy as IPolyline;
IGeometry pProfLine;
IPoint m_StartPoint = pPolyline.FromPoint;
IPoint m_EndPoint = pPolyline.ToPoint;
object size = new object();
pSurface.GetProfile(pPolyline, out pProfLine, ref size);
IPolyline pNewLine = pProfLine as IPolyline;
double iii = pPolyline.Length;
List <double> ZValue = new List <double>();
List <double> DistanceValue = new List <double>();
DistanceValue.Add(0);
ZValue.Add(pNewLine.FromPoint.Z);
for (int i = 1; i < (int)pNewLine.Length; i++)
{
DistanceValue.Add(i);
ICurve pCurve;
pNewLine.GetSubcurve(0, DistanceValue[i], false, out pCurve);
ZValue.Add(pCurve.ToPoint.Z);
}
DistanceValue.Add(pNewLine.Length);
ZValue.Add(pNewLine.ToPoint.Z);
double roffset = inoffset.Value / 2; //右轮偏移
double loffset = -inoffset.Value / 2; //左轮偏移
IPolyline pRLine = ConstructOffset(pPolyline, roffset);
IPolyline pLLine = ConstructOffset(pPolyline, loffset);
IGeometry pLProfLine;
IGeometry pRProfLine;
pSurface.GetProfile(pRLine, out pRProfLine, ref size);
pSurface.GetProfile(pLLine, out pLProfLine, ref size);
IPolyline pRNewline = pRProfLine as IPolyline;
IPolyline pLNewline = pLProfLine as IPolyline;
List <double> ZRValue = new List <double>();
List <double> ZLValue = new List <double>();
List <double> RDistanceValue = new List <double>();
List <double> LDistanceValue = new List <double>();
RDistanceValue.Add(0);
LDistanceValue.Add(0);
ZRValue.Add(pRNewline.FromPoint.Z);
ZLValue.Add(pLNewline.FromPoint.Z);
for (int j = 1; j < (int)pRNewline.Length; j++)
{
RDistanceValue.Add(j);
ICurve pCurve;
pRNewline.GetSubcurve(0, RDistanceValue[j], false, out pCurve);
ZRValue.Add(pCurve.ToPoint.Z);
}
RDistanceValue.Add(pRNewline.Length);
ZRValue.Add(pRNewline.ToPoint.Z);
for (int k = 1; k < (int)pLNewline.Length; k++)
{
LDistanceValue.Add(k);
ICurve pCurve;
pLNewline.GetSubcurve(0, LDistanceValue[k], false, out pCurve);
ZLValue.Add(pCurve.ToPoint.Z);
}
LDistanceValue.Add(pLNewline.Length);
ZLValue.Add(pLNewline.ToPoint.Z);
FrmprofileGraph frmgraph = new FrmprofileGraph(ZValue, DistanceValue, pNewLine, ZRValue, RDistanceValue, ZLValue, LDistanceValue);
frmgraph.ShowDialog();
frmgraph.ShowInTaskbar = false;
frmgraph.StartPosition = FormStartPosition.CenterScreen;
#region ///
////用ISurface的 InterpolateShape方法，得到这条直线做剖面后的Geometry，方法说明详见帮助
//IGeometry OutShape;
//object size = new object();
//pSurface.InterpolateShape(pPolyline, out OutShape, ref size);
////将结果QI为 PointCollection，QI成功显示结果是直线上单一的几个离散点，InterpolateShape会自动将分析的结果直线上选取六个等分的离散点，以这六个点的值来作曲线图
//IPointCollection pointCollection = OutShape as IPointCollection;
//IMAware maware = pointCollection as IMAware;
//maware.MAware = true;
//IZAware zaware = pointCollection as IZAware;
//zaware.ZAware = true;
//IMSegmentation mseg = pointCollection as IMSegmentation;
////设置M的值为距离
//mseg.SetMsAsDistance(false);
//IPointCollection newPointColl = new PolylineClass();
//int count = pointCollection.PointCount;
//for (int i = 0; i < count; i++)
//{
// IPoint point = pointCollection.get_Point(i);
// IPoint newPoint = new PointClass();
// newPoint.X = point.M;
// newPoint.Y = point.Z;
// object missing = Type.Missing;
// newPointColl.AddPoint(newPoint, ref missing, ref missing);
//}
//#region
////IWorkspaceFactory wsFactory = new ShapefileWorkspaceFactoryClass();
////IWorkspaceName workspaceName = wsFactory.Create("F:", "temp", null, 0);
//IWorkspaceFactory workspaceFactory = new InMemoryWorkspaceFactoryClass();
//IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace", null, 0);
//IName name = workspaceName as IName;
//IWorkspace workspace = name.Open() as IWorkspace;
//IFields fields = new FieldsClass();
//IFieldsEdit fieldsEdit = fields as IFieldsEdit;
//IField field = new FieldClass();
//IFieldEdit fieldEdit = field as IFieldEdit;
//fieldEdit.Name_2 = "OID";
//fieldEdit.Type_2 = esriFieldType.esriFieldTypeOID;
//fieldsEdit.AddField(field);
//IGeometryDef geometryDef = new GeometryDefClass();
//IGeometryDefEdit geometryDefEdit = geometryDef as IGeometryDefEdit;
//geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline;
//ISpatialReference spatialRef = new UnknownCoordinateSystemClass();
//geometryDefEdit.SpatialReference_2 = (pRlayer as IGeoDataset).SpatialReference;
//field = new FieldClass();
//fieldEdit = field as IFieldEdit;
//fieldEdit.Name_2 = "Shape";
//fieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
//fieldEdit.GeometryDef_2 = geometryDef;
//fieldsEdit.AddField(field);
//IFieldChecker fieldChecker = new FieldCheckerClass();
//IEnumFieldError enumFieldError = null;
//IFields validatedFields = null;
//fieldChecker.ValidateWorkspace = workspace;
//fieldChecker.Validate(fields, out enumFieldError, out validatedFields);
//IFeatureClass featureClass = (workspace as IFeatureWorkspace).CreateFeatureClass("test",
// validatedFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
//IFeatureCursor featureCursor = featureClass.Insert(true);
//IFeatureBuffer featureBuffer = featureClass.CreateFeatureBuffer();
//featureBuffer.Shape = pFeature as IGeometry;
//featureCursor.InsertFeature(featureBuffer);
//featureCursor.Flush();
//#endregion
//IFeatureLayer featureLayer = new FeatureLayerClass();
//featureLayer.FeatureClass = featureClass;
//featureLayer.Name = featureClass.AliasName;
//pMapControl.AddLayer(featureLayer as ILayer);
//pMapControl.Refresh();
////建立featureClass，为后面曲线图提供数据
//IWorkspaceFactory workspaceFactory = new InMemoryWorkspaceFactoryClass();
//IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace", null, 0);
//IName name = (IName)workspaceName;
//IWorkspace inmemWor = (IWorkspace)name.Open();
//IFields fields = new FieldsClass();
//IFieldsEdit fieldsEdit = fields as IFieldsEdit;
//IField oidField = new FieldClass();
//IFieldEdit oidFieldEdit = oidField as IFieldEdit;
//oidFieldEdit.Name_2 = "OID";
//oidFieldEdit.Type_2 = esriFieldType.esriFieldTypeOID;
//fieldsEdit.AddField(oidField);
//IGeometryDef geometryDef = new GeometryDefClass();
//IGeometryDefEdit geometryDefEdit = geometryDef as IGeometryDefEdit;
//geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint;
//geometryDefEdit.HasM_2 = true;
//geometryDefEdit.HasZ_2 = true;
//ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
//ISpatialReference spatialReference = pMapControl.SpatialReference;//spatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
//ISpatialReferenceResolution spatialReferenceResolution = (ISpatialReferenceResolution)spatialReference; spatialReferenceResolution.ConstructFromHorizon();
//ISpatialReferenceTolerance spatialReferenceTolerance = (ISpatialReferenceTolerance)spatialReference; spatialReferenceTolerance.SetDefaultXYTolerance();
//geometryDefEdit.SpatialReference_2 = spatialReference;
//IField geometryField = new FieldClass();
//IFieldEdit geometryFieldEdit = (IFieldEdit)geometryField;
//geometryFieldEdit.Name_2 = "Shape";
//geometryFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
//geometryFieldEdit.GeometryDef_2 = geometryDef;
//fieldsEdit.AddField(geometryField);
//IField mField = new FieldClass();
//IFieldEdit mFieldEdit = (IFieldEdit)mField;
//mFieldEdit.Name_2 = "M";
//mFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
//mFieldEdit.Length_2 = 8;
//fieldsEdit.AddField(mField);
//IField zField = new FieldClass();
//IFieldEdit zFieldEdit = (IFieldEdit)zField;
//zFieldEdit.Name_2 = "Z";
//zFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
//zFieldEdit.Length_2 = 8;
//fieldsEdit.AddField(zField);
//IFieldChecker fieldChecker = new FieldCheckerClass();
//IEnumFieldError enumFieldError = null;
//IFields validatedFields = null;
//fieldChecker.ValidateWorkspace = inmemWor;
//fieldChecker.Validate(fields, out enumFieldError, out validatedFields);
//IFeatureClass featureClass = (inmemWor as IFeatureWorkspace).CreateFeatureClass("test", validatedFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
//IFeatureCursor cursor = featureClass.Insert(true);
//IFeatureBuffer buffer = featureClass.CreateFeatureBuffer();
//int count = pointCollection.PointCount;
//for (int i = 0; i < count; ++i)
//{
// IPoint p = pointCollection.get_Point(i);
// buffer.Shape = p as IGeometry;
// buffer.set_Value(buffer.Fields.FindField("M"), p.M);
// buffer.set_Value(buffer.Fields.FindField("Z"), p.Z);
// cursor.InsertFeature(buffer);
//}
//cursor.Flush();
////开始做曲线图
#endregion
}
catch (System.Exception ex)
{
MessageBox.Show("该图像不能做剖面分析", "提示", MessageBoxButtons.OK);
}
}
/// <summary>
/// clip a polyline at the specified lengths
/// </summary>
public static IPolyline ClipContour(IPoint npsPoint, IPolyline npsPolyline, double RangeLeft, double RangeRight)
{
ICurve NewPolyline = null, pl2, pl1;
IPoint npsExactPoint;
double PolylineLength, DistanceFromStart = 0, DistanceFromCurve = 0, NewLineEnd,
AmountOver, start1 = 0, start2 = 0, end1 = 0, end2 = 0, NewLineStart;
bool npsRightSide = false, IsOutOfBoundsLeft, IsOutOfBoundsRight;
ISegmentCollection newpl = null;
if (npsPolyline == null) return null;
PolylineLength = npsPolyline.Length;
//get the distance of the point from the start of the contour
npsExactPoint = new PointClass();
npsPolyline.QueryPointAndDistance(esriSegmentExtension.esriNoExtension, npsPoint, false,
npsExactPoint, ref DistanceFromStart, ref DistanceFromCurve, ref npsRightSide);
//if (contour)polyline is not a closed line
if (npsPolyline.IsClosed == false)
{
IsOutOfBoundsLeft = false;
IsOutOfBoundsRight = false;
NewLineStart = DistanceFromStart - RangeLeft;
NewLineEnd = DistanceFromStart + RangeRight;
if (NewLineStart < 0) IsOutOfBoundsLeft = true;
if (NewLineEnd > PolylineLength) IsOutOfBoundsRight = true;
//if contour is outbound to the left, then try to shift it to the right
if (IsOutOfBoundsLeft == true && IsOutOfBoundsRight == false)
{
AmountOver = (DistanceFromStart - RangeLeft) * -1;
if (((DistanceFromStart + RangeRight) + AmountOver) < PolylineLength)
{
NewLineStart = 0;
NewLineEnd = (DistanceFromStart + RangeRight) + AmountOver;
}
else
{
NewLineStart = -1;
NewLineEnd = -1;
}
}
//if contour is out of bounds to the right, then try to shift it to the left
if (IsOutOfBoundsLeft == false && IsOutOfBoundsRight == true)
{
AmountOver = (DistanceFromStart + RangeRight) - PolylineLength;
if (((DistanceFromStart - RangeLeft) - AmountOver) >= 0)
{
NewLineStart = (DistanceFromStart - RangeLeft) - AmountOver;
NewLineEnd = PolylineLength;
}
else
{
NewLineStart = -1;
NewLineEnd = -1;
}
}
//since the contour is to short on both ends to create the new polyline,abound operation
if (IsOutOfBoundsLeft == true && IsOutOfBoundsRight == true)
{
NewLineStart = -1;
NewLineEnd = -1;
}
if (NewLineStart != -1 && NewLineEnd != -1)
{
NewPolyline = new PolylineClass();
npsPolyline.GetSubcurve(NewLineStart, NewLineEnd, false, out NewPolyline);
}
}
else //if polyline is closed
{
if ((RangeLeft + RangeRight) < PolylineLength)
{
pl1 = new PolylineClass();
pl2 = new PolylineClass();
newpl = new PolylineClass();
//if desired subcurve does not cross the start/end point of the closed polyline(circular) then get
//a sub curve as normal
if ((DistanceFromStart - RangeLeft) >= 0 && (DistanceFromStart + RangeRight) < PolylineLength)
{
NewLineStart = DistanceFromStart - RangeLeft;
NewLineEnd = DistanceFromStart + RangeRight;
NewPolyline = new PolylineClass();
npsPolyline.GetSubcurve(NewLineStart, NewLineEnd, false, out NewPolyline);
}
else
{
//if desired subcurve does cross the start/end point of the closed polyline(circular)
//then two subcurves will have to be formed each ending at the start/end point of the circle
//if left range oversteps start/end then...
if ((DistanceFromStart - RangeLeft) < 0)
{
start1 = PolylineLength - ((DistanceFromStart - RangeLeft) * -1);
end1 = PolylineLength;
start2 = 0;
end2 = DistanceFromStart + RangeRight;
}
//if right range oversteps start/end then...
if ((DistanceFromStart + RangeRight) > PolylineLength)
{
start1 = DistanceFromStart - RangeLeft;
end1 = PolylineLength;
start2 = 0;
end2 = (DistanceFromStart + RangeRight) - PolylineLength;
}
//combine sub curves
npsPolyline.GetSubcurve(start1, end1, false, out pl1);
npsPolyline.GetSubcurve(start2, end2, false, out pl2);
newpl.AddSegmentCollection(pl1 as ISegmentCollection);
newpl.AddSegmentCollection(pl2 as ISegmentCollection);
NewPolyline = newpl as ICurve;
}
}
}
return NewPolyline as IPolyline;
}