private void EditMouseDown(IPoint pPnt)
{
try
{
IPolygon pGeompoly;
IPolyline pGeomPolyline;
IHitTest pHtTest;
IPoint pPtHit;
double pDblHitDis = 0;
int pLngPrtIdx = 0;
int pLngSegIdx = 0;
Boolean pBoolHitRt = false;
Boolean pBoolHitTest = false;
double pDblSrchDis = 0;
pPnt.Z = 0;
pPtHit = new PointClass();
pDblSrchDis = m_activeView.Extent.Width / 200;
//获取编辑目标图层
IFeatureLayer pFeatLyr = m_EngineEditLayers.TargetLayer;
if (pFeatLyr == null)
{
return;
}
IFeatureCursor pFeatCur = MapManager.GetSelectedFeatures(pFeatLyr);
IFeature pTFeature = pFeatCur.NextFeature();
switch (pTFeature.Shape.GeometryType)
{
//当为单点、点集时直接返回
case esriGeometryType.esriGeometryPoint:
case esriGeometryType.esriGeometryMultipoint:
return;
//线要素
case esriGeometryType.esriGeometryLine:
case esriGeometryType.esriGeometryPolyline:
m_pHitElem = new LineElementClass();
break;
//面要素
case esriGeometryType.esriGeometryPolygon:
case esriGeometryType.esriGeometryEnvelope:
m_pHitElem = new PolygonElementClass();
break;
}
//获取选中要素的几何对象
m_pHitElem.Geometry = pTFeature.Shape;
if (m_pHitElem != null)
{
switch (pTFeature.Shape.GeometryType)
{
case esriGeometryType.esriGeometryLine:
case esriGeometryType.esriGeometryPolyline:
pGeomPolyline = m_pHitElem.Geometry as IPolyline;
pHtTest = pGeomPolyline as IHitTest;
pBoolHitTest = pHtTest.HitTest(pPnt, pDblSrchDis,
esriGeometryHitPartType.esriGeometryPartVertex, pPtHit,
ref pDblHitDis, ref pLngPrtIdx, ref pLngSegIdx, ref pBoolHitRt);
if (pBoolHitTest)
{
EditVertexClass.pHitPnt = pPtHit;
m_editDispFeed = new LineMovePointFeedbackClass();
m_editDispFeed.Display = m_activeView.ScreenDisplay;
m_polylineMvPtFeed = m_editDispFeed as ILineMovePointFeedback;
m_polylineMvPtFeed.Start(pGeomPolyline, pLngSegIdx, pPnt);
}
break;
case esriGeometryType.esriGeometryPolygon:
case esriGeometryType.esriGeometryEnvelope:
pGeompoly = m_pHitElem.Geometry as IPolygon;
pHtTest = pGeompoly as IHitTest;
pBoolHitTest = pHtTest.HitTest(pPnt, pDblSrchDis,
esriGeometryHitPartType.esriGeometryPartVertex,
pPtHit, ref pDblHitDis, ref pLngPrtIdx, ref pLngSegIdx, ref pBoolHitRt);
EditVertexClass.pHitPnt = pPtHit;
if (pBoolHitTest)
{
//定义获取到的与传入点的最近所选地物
IFeature pFeature;
//定义测量距离用于捕获离点最近的地物
double pTestDist = 0;
//用于求点与地物的距离
IProximityOperator pProximity;
IGeometry pGeoM;
IFeature pTestFeature;
//用于最短距离的比较
double pTempDist = 0;
IFeatureCursor pSelected;
ITopologicalOperator pTopoOpt;
//捕捉到的要移动的节点
IPoint pSnapVertex = default(IPoint);
//从所选地物中获得离点最近的那个地物
pFeature = null;
//用鼠标点进行运算
pTopoOpt = pPnt as ITopologicalOperator;
pTopoOpt.Simplify();
pProximity = pPnt as IProximityOperator;
pSelected = MapManager.GetSelectedFeatures(pFeatLyr);
pTestFeature = pSelected.NextFeature();
pGeoM = pTestFeature.Shape;
pTestDist = pProximity.ReturnDistance(pGeoM);
pFeature = pTestFeature;
//从所选地物中获得离点最近的那个地物
while (pTestFeature != null)
{
pTestFeature = pSelected.NextFeature();
if (pTestFeature != null)
{
pGeoM = pTestFeature.Shape;
pTempDist = pProximity.ReturnDistance(pGeoM);
if (pTempDist < pTestDist)
{
pTestDist = pTempDist;
pFeature = pTestFeature;
}
}
}
//检查pSnapPoint是否是所选地物中的某个图斑的一个节点
double pDblHDis = 0;
int pLngVertexIdx = 0;
int pLngSIdx = 0;
bool pBoolHRt = false;
bool pBlnGet = false;
double pDblDistMin = 0;
pDblDistMin = pTempDist;
if (pDblDistMin == 0)
{
pDblDistMin = 3;
}
//两倍可以保证一般一次找的到
double pDblSearchRadius = pDblDistMin * 2;
IHitTest pHT = default(IHitTest);
pHT = pFeature.Shape as IHitTest;
//如果pSnapPoint不是pTempParcel的节点
if (EditVertexClass.GetVertexIndex(pPnt, pFeature.Shape) == -2)
{
pSnapVertex = new Point();
while (!pBlnGet)
{
pBlnGet = pHT.HitTest(pPnt, pDblSearchRadius,
esriGeometryHitPartType.esriGeometryPartVertex,
pSnapVertex, ref pDblHDis, ref pLngVertexIdx, ref pLngSIdx, ref pBoolHRt);
pDblSearchRadius = pDblSearchRadius + pDblDistMin;
}
EditVertexClass.pHitPnt = pSnapVertex;
//如果pSnapVertex仍然不是pTempParcel的节点
if (EditVertexClass.GetVertexIndex(pSnapVertex, pFeature.Shape) == -2)
{
MessageBox.Show("所想移动的起点不是所选面的节点", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
m_fromPoint = pSnapVertex;
}
else
{
pSnapVertex = pPnt;
m_fromPoint = pSnapVertex;
}
//找到包含所要移动的节点的图形,在该过程里面对m_FeatArray进行了赋值
EditVertexClass.SelectByShapeTop(pFeatLyr, pSnapVertex, esriSpatialRelEnum.esriSpatialRelTouches,
false, esriSelectionResultEnum.esriSelectionResultNew);
m_editDispFeed = new PolygonMovePointFeedbackClass();
m_editDispFeed.Display = m_activeView.ScreenDisplay;
m_polyMvPtFeed = m_editDispFeed as IPolygonMovePointFeedback;
m_polyMvPtFeed.Start(pGeompoly, pLngSegIdx, pPnt);
}
break;
}
}
}
catch (Exception ex)
{
}
}
private void EditMouseUp(IPoint pPnt)
{
IPolygon pPolyResult;
IPolyline pPolylineResult;
IFeatureCursor pFeatureCursor;
IFeature pFeature;
IFeatureLayer pFeatLyr = m_EngineEditLayers.TargetLayer;
//检查编辑的地物
if (m_editDispFeed != null)
{
switch (m_pHitElem.Geometry.GeometryType)
{
case esriGeometryType.esriGeometryLine:
case esriGeometryType.esriGeometryPolyline:
pPolylineResult = m_polylineMvPtFeed.Stop();
//作有效性检查
if ((pPolylineResult != null))
{
//更新元素
m_pHitElem.Geometry = pPolylineResult;
//获取选中的地物
pFeatureCursor = MapManager.GetSelectedFeatures(pFeatLyr);
if (pFeatureCursor == null)
{
return;
}
pFeature = pFeatureCursor.NextFeature();
m_EngineEditor.StartOperation();
//更新要素形状
pFeature.Shape = pPolylineResult;
pFeature.Store();
//停止编辑
m_EngineEditor.StopOperation("MoveVertex");
EditVertexClass.ShowAllVertex(pFeatLyr);
}
break;
case esriGeometryType.esriGeometryPolygon:
case esriGeometryType.esriGeometryEnvelope:
//得到反馈的结果
pPolyResult = m_polyMvPtFeed.Stop();
//作有效性检查
if (pPolyResult != null)
{
//更新元素
m_pHitElem.Geometry = pPolyResult;
//获取选中的地物
pFeatureCursor = MapManager.GetSelectedFeatures(pFeatLyr);
if (pFeatureCursor == null)
{
return;
}
pFeature = pFeatureCursor.NextFeature();
m_EngineEditor.StartOperation();
//更新要素形状
pFeature.Shape = pPolyResult;
pFeature.Store();
//停止编辑
m_EngineEditor.StopOperation("MoveVertex");
if (pFeature.Shape.GeometryType == esriGeometryType.esriGeometryPolygon ||
pFeature.Shape.GeometryType == esriGeometryType.esriGeometryPolyline)
{
EditVertexClass.ShowAllVertex(pFeatLyr);
}
}
IFeature pTempParcel;
//定义存储多边形要素的局部变量
IPoint pDestPoint;
//定义节点移动的目标位置
pDestPoint = pPnt;
IZAware pZAware = pDestPoint as IZAware;
pZAware.ZAware = true;
pDestPoint.Z = 0;
//所有包含该节点的多边形都进行操作
for (int i = 0; i <= EditVertexClass.m_featArray.Count - 1; i++)
{
pTempParcel = EditVertexClass.m_featArray.get_Element(i) as IFeature;
//记录节点序号
int pIndex = 0;
pIndex = EditVertexClass.GetVertexIndex(m_fromPoint, pTempParcel.Shape);
if (!(pIndex == -2))
{
ITopologicalOperator pTopoOpt = default(ITopologicalOperator);
IPolygon pPolygon = default(IPolygon);
IPointCollection pPolygonPointCol = default(IPointCollection);
pPolygonPointCol = pTempParcel.ShapeCopy as IPointCollection;
pPolygonPointCol.UpdatePoint(pIndex, pDestPoint);
pPolygon = pPolygonPointCol as IPolygon;
pPolygon.Close();
pTopoOpt = pPolygon as ITopologicalOperator;
pTopoOpt.Simplify();
pTempParcel.Shape = pPolygon;
pTempParcel.Store();
}
}
EditVertexClass.m_featArray.RemoveAll();
break;
}
//释放内存
m_polyMvPtFeed = null;
m_polylineMvPtFeed = null;
m_editDispFeed = null;
m_pHitElem = null;
//刷新地图
m_activeView.Refresh();
}
}
public static void ShowAllVertex(IFeatureLayer pFeatLyr)
{
m_vertexGeoBag = null;
if (pFeatLyr == null)
{
return;
}
IFeatureCursor pFeatureCursor = MapManager.GetSelectedFeatures(pFeatLyr);
if (pFeatureCursor == null)
{
return;
}
IFeature pTFeature = null;
//得到要显示节点的地物
pTFeature = pFeatureCursor.NextFeature();
if (pTFeature == null)
{
return;
}
//只选中一个地物进行节点移动
m_Map.ClearSelection();
m_Map.SelectFeature(pFeatLyr as ILayer, pTFeature);
m_activeView.Refresh();
//如果为点状地物，不显示节点
if (pTFeature.Shape.GeometryType == esriGeometryType.esriGeometryPoint)
{
return;
}
IArray pFeatureArray = null;
pFeatureArray = new ESRI.ArcGIS.esriSystem.Array();
pFeatureArray.Add(pTFeature);
//绘图符号初始化
SymbolInit();
IFeature pFeature = default(IFeature);
IPointCollection pPointCol = default(IPointCollection);
IPoint pPoint = default(IPoint);
int i = 0; int j = 0;
m_vertexGeoBag = new GeometryBagClass();
for (i = 0; i <= pFeatureArray.Count - 1; i++)
{
pFeature = pFeatureArray.get_Element(i) as IFeature;
//获取图形边界的点集
pPointCol = pFeature.ShapeCopy as IPointCollection;
for (j = 0; j <= pPointCol.PointCount - 1; j++)
{
pPoint = pPointCol.get_Point(j);
if (j == 0 | j == pPointCol.PointCount - 1)
{
//两个端点的ID设为10
pPoint.ID = 10;
}
else
{
//中间点的ID设为100
pPoint.ID = 100;
}
IColor pColor = null;
object obj = Type.Missing;
//显示节点
if (pPoint == pHitPnt)
{
DisplayGraphic(pPoint, pColor, m_selPointSym as ISymbol);
}
if (j == 0 || j == pPointCol.PointCount - 1)
{
DisplayGraphic(pPoint, pColor, m_endPointSym as ISymbol);
}
else
{
DisplayGraphic(pPoint, pColor, m_vertexSym as ISymbol);
}
m_vertexGeoBag.AddGeometry(pPoint, ref obj, ref obj);
}
}
}
