public void SelectFeaturesFromBaseLyr(IPolyline polyLine)
{
btn_analyse.Enabled = false;
btn_createLine.Enabled = false;
this.btnFlyToSourcePoint.Enabled = false;
this.btnFlyToTargetPoint.Enabled = false;
IFdeCursor cursor = null;
try
{
this.dataGridView1.Rows.Clear();
axRenderControl1.FeatureManager.UnhighlightAll();
IRowBuffer row = null;
int index = 0;
List <IRowBuffer> list = new List <IRowBuffer>();
this.Text = "开始粗查询";
foreach (IFeatureClass fc in fcMap.Keys)
{
ISpatialFilter filter = new SpatialFilter();
filter.Geometry = polyline;
filter.SpatialRel = gviSpatialRel.gviSpatialRelEnvelope;
filter.GeometryField = "Geometry";
cursor = fc.Search(filter, false);
while ((row = cursor.NextRow()) != null)
{
list.Add(row);
}
this.Text = "开始细查询";
foreach (IRowBuffer r in list)
{
index++;
int geometryIndex = -1;
geometryIndex = r.FieldIndex("Geometry");
if (geometryIndex != -1)
{
IModelPoint modelPoint = r.GetValue(geometryIndex) as IModelPoint;
IModel model = (fc.FeatureDataSet as IResourceManager).GetModel(modelPoint.ModelName);
IGeometryConvertor gc = new GeometryConvertor();
this.Text = "正在计算第" + index.ToString() + "个IMultiTriMesh是否与线相交";
IMultiTriMesh triMesh = gc.ModelPointToTriMesh(model, modelPoint, false);
if (triMesh != null)
{
ILine l = geoFactory.CreateGeometry(gviGeometryType.gviGeometryLine, gviVertexAttribute.gviVertexAttributeZ) as ILine;
l.StartPoint = polyline.StartPoint;
l.EndPoint = polyline.EndPoint;
IVector3 v3 = triMesh.LineSegmentIntersect(l);
if (v3 != null)
{
string fid = "";
string fName = "";
string groupId = "";
IEnvelope env = null;
int fidPos = r.FieldIndex(fc.FidFieldName);
axRenderControl1.FeatureManager.HighlightFeature(fc, int.Parse(r.GetValue(fidPos).ToString()), System.Drawing.Color.Red);
for (int i = 0; i < r.FieldCount; i++)
{
string fieldName = r.Fields.Get(i).Name;
if (r.Fields.Get(i).Name == "oid")
{
fid = r.GetValue(i).ToString();
}
else if (r.Fields.Get(i).Name == "groupid")
{
groupId = r.GetValue(i).ToString();
}
else if (r.Fields.Get(i).Name == "Name")
{
fName = r.GetValue(i).ToString();
}
else if (r.Fields.Get(i).Name == "Geometry")
{
IGeometry geometry = r.GetValue(i) as IModelPoint;
env = geometry.Envelope;
}
}
RowObject ro = new RowObject()
{
FID = fid, GroupId = groupId, Name = fName, FeatureClass = fc, Envelop = env
};
if (!rowMap.ContainsKey(ro.FID))
{
rowMap.Add(ro.FID, ro);
}
}
}
}
} // end of foreach (IRowBuffer r in list)
} // end of foreach (IFeatureClass fc in fcMap.Keys)
this.Text = "通视分析完成！";
LoadGridView();
}
catch (Exception ex)
{
if (ex.GetType().Name.Equals("UnauthorizedAccessException"))
{
MessageBox.Show("需要标准runtime授权");
}
else
{
MessageBox.Show(ex.Message);
}
}
finally
{
this.btn_analyse.Enabled = true;
this.btn_createLine.Enabled = true;
this.btnFlyToSourcePoint.Enabled = true;
this.btnFlyToTargetPoint.Enabled = true;
if (cursor != null)
{
//Marshal.ReleaseComObject(cursor);
cursor = null;
}
}
}