/// <summary>
/// 检查包括数据的单元格
/// </summary>
/// <param name="type">类型 0-居民地,1-道路,2-水系</param>
private void CheckGrid(int type)
{
IPolygon grid;
if (_DataGrids != null)
{
_DataGrids.Clear();
}
else
{
_DataGrids = new List <Geometry.Grid>();
}
foreach (Geometry.Grid g in _InitGrids)
{
IFeatureCursor featureCursor = null;
ISpatialFilter spatialFilter = new SpatialFilter();
if (isContainedInDataGrids(g))
{
continue; //如果已包含在数据单元格中了，则跳过
}
grid = g.BuildPolygon();
spatialFilter.Geometry = grid as IGeometry;
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
if (type == 0)
{
featureCursor = ResidentLayer.Search(spatialFilter, false);
}
else if (type == 1)
{
featureCursor = RoadLayer.Search(spatialFilter, false);
}
else if (type == 2)
{
featureCursor = HydroLayer.Search(spatialFilter, false);
}
//System.Diagnostics.Debug.Print("row=" + g.Row.ToString() + ",col=" + g.Col.ToString());
if (featureCursor.NextFeature() != null)
{
_DataGrids.Add(g);
}
featureCursor.Flush();
featureCursor = null;
}
}
