private void AddVertexNode(IPoint pPnt)
{
try
{
IFeatureLayer pFeaturelayer = m_EngineEditLayers.TargetLayer;
IActiveView pActiveView = m_activeView;
IPoint pPoint = pPnt;
if (pFeaturelayer.FeatureClass == null)
{
return;
}
//如果不是面状地物则退出
if (pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryEnvelope &&
pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPolygon &&
pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryLine &&
pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPolyline)
{
return;
}
IGeometry pGeo = null;
IFeature pSelFeature = null;
pSelFeature = EditVertexClass.GetSelectedFeature(pFeaturelayer);
//是否有选中的几何体
if (pSelFeature == null)
{
return;
}
//解决不带Z值的要素的编辑和Z值为空的要素的编辑问题
IZAware pZAware = pPoint as IZAware;
pZAware.ZAware = true;
pPoint.Z = 0;
bool pInLine = false;
ITopologicalOperator pTopoOpt = default(ITopologicalOperator);
IPolyline pBoundaryLine = default(IPolyline);
//最小的距离
double pMindis = 0;
IProximityOperator pProxOpt = default(IProximityOperator);
//得到多边形的边界
if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon ||
pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryEnvelope)
{
//获取边界线
pBoundaryLine = EditVertexClass.GetBoundary(pFeaturelayer);
}
else if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline ||
pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryLine)
{
pBoundaryLine = pSelFeature.ShapeCopy as IPolyline;
}
pTopoOpt = pPoint as ITopologicalOperator;
IRelationalOperator pRelationalOperator = default(IRelationalOperator);
pRelationalOperator = pPoint as IRelationalOperator;
//判断点是否在边界上
pInLine = pRelationalOperator.Within(pBoundaryLine);
//如果不在边界上，判断是否小于容忍距离,如果大于容忍距离则退出程序
if (pInLine == false)
{
pProxOpt = pPoint as IProximityOperator;
pMindis = pProxOpt.ReturnDistance(pBoundaryLine);
if (pMindis > THE_POINT_TO_POINT_TOLERANCE)
{
return;
}
}
//判断是否增加的点刚好为节点
IPointCollection pPolylinePointCol = pBoundaryLine as IPointCollection;
IHitTest pHitTest = default(IHitTest);
double pHitDis = 0;
int pSegIndex = 0;
int pVerIndex = 0;
IPoint pHitPoint = null;
bool bRightSide = true;
pHitTest = pBoundaryLine as IHitTest;
//增加的点为已有的节点则退出程序
if (pHitTest.HitTest(pPoint, THE_POINT_TO_POINT_TOLERANCE * 10,
esriGeometryHitPartType.esriGeometryPartVertex, pHitPoint,
ref pHitDis, ref pSegIndex, ref pVerIndex, ref bRightSide) == true)
{
if (pHitDis < THE_POINT_TO_POINT_TOLERANCE)
{
return;
}
}
EditVertexClass.pHitPnt = pHitPoint;
//为多边形增加节点
ISegmentCollection pSegmentCollection = pBoundaryLine as ISegmentCollection;
IPolyline pSegPolyline = null;
int pPointIndex = 0;
ILine pLine = default(ILine);
double pDis1 = 0;
double pDis2 = 0;
IPoint pVerTex = default(IPoint);
pMindis = 100;
pProxOpt = pPoint as IProximityOperator;
for (int i = 0; i <= pSegmentCollection.SegmentCount - 1; i++)
{
//判断选中点是否在这个Segment上
pLine = pSegmentCollection.get_Segment(i) as ILine;
pDis1 = pProxOpt.ReturnDistance(pLine.FromPoint);
pDis2 = pProxOpt.ReturnDistance(pLine.ToPoint);
if (Math.Abs(pDis1 + pDis2 - pLine.Length) <= pMindis)
{
pMindis = Math.Abs(pDis1 + pDis2 - pLine.Length);
pVerTex = pLine.ToPoint;
}
}
//获取选中的几何特征
pGeo = pSelFeature.Shape;
//得到索引
pPointIndex = EditVertexClass.GetVertexIndex(pVerTex, pGeo);
//如果是首点，则设置为最后一个点
if (pPointIndex == 0)
{
pPointIndex = pSegmentCollection.SegmentCount;
}
IPointCollection pPolygonPointCol = null;
pPolygonPointCol = pSelFeature.ShapeCopy as IPointCollection;
pPolygonPointCol.InsertPoints(pPointIndex, 1, ref pPoint);
m_EngineEditor.StartOperation();
//拓扑操作
IPolygon pPolygon = null;
IPolyline pPlyline = null;
if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon ||
pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryEnvelope)
{
pPolygon = pPolygonPointCol as IPolygon;
pPolygon.Close();
pTopoOpt = pPolygon as ITopologicalOperator;
pTopoOpt.Simplify();
pSelFeature.Shape = pPolygon;
pSelFeature.Store();
}
else if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline ||
pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryLine)
{
pPlyline = pPolygonPointCol as IPolyline;
pTopoOpt = pPlyline as ITopologicalOperator;
pTopoOpt.Simplify();
pSelFeature.Shape = pPlyline;
pSelFeature.Store();
}
//停止编辑
m_EngineEditor.StopOperation("AddVertexTool");
//显示顶点
EditVertexClass.ShowAllVertex(pFeaturelayer);
}
catch (Exception ex)
{
}
}
private void DelVertexNode(IPoint pPnt)
{
try
{
IFeatureLayer pFeaturelayer = m_EngineEditLayers.TargetLayer;
IActiveView pActiveView = m_activeView;
IPoint pPoint = pPnt;
if (pFeaturelayer.FeatureClass == null) return;
//如果不是面状地物则退出
if (pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryEnvelope
&& pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPolygon
&& pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryLine
&& pFeaturelayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPolyline)
return;
IGeometry pGeo = null;
IFeature pSelFeature = null;
pSelFeature = EditVertexClass.GetSelectedFeature(pFeaturelayer);
//是否有选中的几何体
if (pSelFeature == null)
{
return;
}
pGeo = pSelFeature.ShapeCopy;
double pSrchDis = 0;
double pHitDis = 0;
pSrchDis = pActiveView.Extent.Width / 200;
pPoint.Z = 0;
int pIndex = 0;
IElement pElement = null;
IHitTest pHtTest = null;
bool pBoolHitTest = false;
IPoint pPtHit = null;
IPointCollection pPointCol = null;
IPolygon pPolygon = null;
IPolyline pPyline = null;
bool bRightZSide = true;
int pInt = 0;
m_EngineEditor.StartOperation();
//删除面状要素的节点
if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon
|| pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryEnvelope)
{
pElement = new PolygonElement();
pElement.Geometry = pSelFeature.Shape;
IPolygon pPoly = null;
pPoly = pElement.Geometry as IPolygon;
pHtTest = pPoly as IHitTest;
pBoolHitTest = pHtTest.HitTest(pPoint, pSrchDis, esriGeometryHitPartType.esriGeometryPartVertex,
pPtHit, ref pHitDis, ref pInt, ref pIndex, ref bRightZSide);
if (pBoolHitTest == false)
return;
EditVertexClass.pHitPnt = pPtHit;
pPointCol = pSelFeature.ShapeCopy as IPointCollection;
//如果多边形的节点只有3个则不能再删除了
if (pPointCol.PointCount <= 4)
{
MessageBox.Show("多边形的节点至少需要3个!", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
//顶点删除
pPointCol.RemovePoints(pIndex, 1);
pPolygon = pPointCol as IPolygon;
pPolygon.Close();
pSelFeature.Shape = pPolygon;
pSelFeature.Store();
}
//删除线状要素的节点
else if (pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline
|| pFeaturelayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryLine)
{
pElement = new LineElement();
pElement.Geometry = pSelFeature.Shape;
IPolyline pPolyLine = default(IPolyline);
pPolyLine = pElement.Geometry as IPolyline;
pHtTest = pPolyLine as IHitTest;
pBoolHitTest = pHtTest.HitTest(pPoint, pSrchDis, esriGeometryHitPartType.esriGeometryPartVertex,
pPtHit, ref pHitDis, ref pInt, ref pIndex, ref bRightZSide);
if (pBoolHitTest == false)
return;
EditVertexClass.pHitPnt = pPtHit;
pPointCol = pSelFeature.ShapeCopy as IPointCollection;
//如果Polyline节点只有2个则不能再删除了
if (pPointCol.PointCount <= 2)
{
MessageBox.Show("线的节点至少需要2个!", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
//顶点删除
pPointCol.RemovePoints(pIndex, 1);
pPyline = pPointCol as IPolyline;
pSelFeature.Shape = pPyline;
pSelFeature.Store();
}
//与选中点坐标相同的节点都删除
for (int i = 0; i <= pPointCol.PointCount - 1; i++)
{
if (i > pPointCol.PointCount - 1)
break;
if (pPointCol.get_Point(i).X == pPoint.X & pPointCol.get_Point(i).Y == pPoint.Y)
{
pPointCol.RemovePoints(i, 1);
i = i - 1;
}
}
//停止编辑
m_EngineEditor.StopOperation("DelVertexTool");
//显示顶点
EditVertexClass.ShowAllVertex(pFeaturelayer);
m_activeView.Refresh();
}
catch (Exception ex)
{
m_activeView.Refresh();
}
}
