/// <summary>
/// 闪烁选中图斑
/// </summary>
/// <param name="featureCursor"></param>
private void FlashPolygons(IFeatureCursor featureCursor)
{
IArray geoArray = new ArrayClass();
IFeature feature = null;
while ((feature = featureCursor.NextFeature()) != null)
{
//feature是循环外指针，所以必须用ShapeCopy
geoArray.Add(feature.ShapeCopy);
}
//通过IHookActions闪烁要素集合
HookHelperClass m_pHookHelper = new HookHelperClass();
m_pHookHelper.Hook = m_MapControl.Object;
IHookActions hookActions = (IHookActions)m_pHookHelper;
hookActions.DoActionOnMultiple(geoArray, esriHookActions.esriHookActionsPan);
System.Windows.Forms.Application.DoEvents();
m_pHookHelper.ActiveView.ScreenDisplay.UpdateWindow();
hookActions.DoActionOnMultiple(geoArray, esriHookActions.esriHookActionsFlash);
System.Windows.Forms.Application.DoEvents();
m_pHookHelper.ActiveView.ScreenDisplay.UpdateWindow();
}
/// <summary>
/// 多个要素同时闪烁 add by xisheng 2011.07.01
/// </summary>
private void DefaultSelNde()
{
Application.DoEvents();
IArray geoArray = new ArrayClass();
for (int i = 0; i < this.advTree.Nodes.Count; i++)
{
if (!this.advTree.Nodes[i].HasChildNodes)
{
continue;
}
for (int j = 0; j < this.advTree.Nodes[i].Nodes.Count; j++)
{
IFeature pFeature = this.advTree.Nodes[i].Nodes[j].Tag as IFeature;
geoArray.Add(pFeature);
}
}
if (geoArray == null)
{
return;
}
HookHelperClass hookHelper = new HookHelperClass();
hookHelper.Hook = m_pMapControl.Object;
IHookActions hookAction = (IHookActions)hookHelper;
hookAction.DoActionOnMultiple(geoArray, esriHookActions.esriHookActionsFlash);
}
public override void OnClick()
{
IHookActions hookActions = null;
IBasicMap basicMap = null;
//Get basic map and set hook actions
if (m_hookHelper != null)
{
basicMap = m_hookHelper.FocusMap as IBasicMap;
hookActions = m_hookHelper as IHookActions;
}
else if (m_globeHookHelper != null)
{
basicMap = m_globeHookHelper.Globe as IBasicMap;
hookActions = m_globeHookHelper as IHookActions;
}
//Get feature selection
ISelection selection = basicMap.FeatureSelection;
//Get enumerator
IEnumFeature enumFeature = selection as IEnumFeature;
enumFeature.Reset();
//Set first feature
IFeature feature;
feature = enumFeature.Next();
//Loop though the features
IArray array = new ESRI.ArcGIS.esriSystem.Array();
IStringArray sArray = new StrArray();
while (feature != null)
{
//Add feature to array
array.Add(feature.Shape);
//Add the value of the first field to the string array
sArray.Add(feature.get_Value(0).ToString());
//Set next feature
feature = enumFeature.Next();
}
//If the action is supported perform the action
if (hookActions.get_ActionSupportedOnMultiple(array, esriHookActions.esriHookActionsLabel))
{
hookActions.DoActionWithNameOnMultiple(array, sArray, esriHookActions.esriHookActionsLabel);
}
}
private void FlashAndIdentify(IArray inArray)
{
try
{
if (inArray == null)
{
return;
}
HookHelperClass hookHelper = new HookHelperClass();
hookHelper.Hook = MyMapControl.Object;
IHookActions hookAction = (IHookActions)hookHelper;
hookAction.DoActionOnMultiple(inArray, esriHookActions.esriHookActionsFlash);
}
catch (Exception exc) { MessageBox.Show(exc.Message); }
}
//buffer查询并闪烁。
public static void BufferSelectAndFlash(IMapControl4 mapCtrl, IGeometry baseGeo, esriSpatialRelEnum spatialRef, ILayer layer)
{
IFeatureLayer featureLayer = layer as IFeatureLayer;
if (mapCtrl == null || featureLayer == null)
{
return;
}
IFeatureClass fC = featureLayer.FeatureClass;
ISpatialFilter pFilter = new SpatialFilterClass();
pFilter.Geometry = baseGeo;
pFilter.GeometryField = "SHAPE";
pFilter.SpatialRel = spatialRef;
IFeatureCursor pFeatureCursor = fC.Search(pFilter, false);
IArray inArray = new ArrayClass();
IFeature fe = pFeatureCursor.NextFeature();
mapCtrl.Map.ClearSelection();
while (fe != null)
{
inArray.Add(fe);
mapCtrl.Map.SelectFeature(layer, fe);
fe = pFeatureCursor.NextFeature();
}
if (inArray == null)
{
return;
}
HookHelper m_hookHelper = new HookHelperClass();
m_hookHelper.Hook = mapCtrl.Object;
IHookActions hookAction = (IHookActions)m_hookHelper;
ICommand cmd = new ControlsZoomToSelectedCommandClass();
cmd.OnCreate(m_hookHelper.Hook);
cmd.OnClick();
Application.DoEvents();
hookAction.DoActionOnMultiple(inArray, esriHookActions.esriHookActionsFlash);
}
/// <summary>
/// 几何闪烁，实现ArcMap的闪烁效果
/// </summary>
/// <param name="mapControl"></param>
/// <param name="geometry"></param>
/// <param name="bZoom">是否缩放到指定几何，默认不缩放</param>
public void Flash(IMapControl4 mapControl, IGeometry geometry, bool bZoom = false)
{
if (geometry == null || geometry.IsEmpty)
{
return;
}
IHookHelper hookHelper = new HookHelperClass();
hookHelper.Hook = mapControl;
IHookActions hookActions = hookHelper as IHookActions;
if (bZoom) //先缩放
{
hookActions.DoAction(geometry, esriHookActions.esriHookActionsZoom);
hookHelper.ActiveView.ScreenDisplay.UpdateWindow();
}
//再闪烁
if (hookActions.get_ActionSupported(geometry, esriHookActions.esriHookActionsFlash))
{
hookActions.DoAction(geometry, esriHookActions.esriHookActionsFlash);
}
}
/// <summary>
/// 显示节点的信息
/// </summary>
/// <param name="node"></param>
private void ShowClickedNodeInfo(TreeNode nodeClicked, bool doFlash)
{
if (nodeClicked == null)
{
//初始化树型显示窗口
InitializeAttributesList();
return;
}
//获取点击点对应的要素
int nodeLevel = nodeClicked.Level;
//获取点击的是图层还是图层下的要素
//若featureIndex < 0则表示点击的是图层,闪烁图层下选中的所有要素
//反之，则表示点击的是图层下的要素，获取图层索引和要素索引，
//用于在结果列表中安索引获取要素或要素集属性
int layerIndex = -1; int featureIndex = -1;
if (nodeLevel > 0)
{
TreeNode parentNode = nodeClicked.Parent;
layerIndex = parentNode.Index;
featureIndex = nodeClicked.Index;
}
else
{
layerIndex = nodeClicked.Index;
}
//获取对应要素
LayerIdentifiedResult layerResult = identifiedResultsList[layerIndex];
//点击了图层下的要素
if (featureIndex > -1)
{
IFeatureIdentifyObj identifyObjDefault = layerResult.IdentifiedFeatureObjList[featureIndex];
IFeature featureDefault = (identifyObjDefault as IRowIdentifyObject).Row as IFeature;
//显示属性
ShowFeatureAttributes(featureDefault);
//判断是否闪烁要素
if (doFlash)
{
HookHelperClass hookHelper = new HookHelperClass();
hookHelper.Hook = MainForm.Instance.AxMapCtrl.Object;
IHookActions hookAction = (IHookActions)hookHelper;
hookAction.DoAction(featureDefault.Shape, esriHookActions.esriHookActionsPan);
Application.DoEvents();
hookAction.DoAction(featureDefault.Shape, esriHookActions.esriHookActionsFlash);
//IIdentifyObj identifyObj = identifyObjDefault as IIdentifyObj;
//if (identifyObj != null)
//{
// // identifyObj.Flash(associateMapControl.ActiveView.ScreenDisplay);
// // identifyObj.Flash(MapUtils.GetActiveView().ScreenDisplay);
//}
}
}
//点击了图层，同时闪烁图层下的所有要素图形
else
{
flashObjects.FlashObjects(layerResult);
}
}
