public MapObjects2.ClassBreaksRenderer GetClassBreaksRender(MapObjects2.MapLayer layer, string renderFieldName, int breaksCount, Color startColor, Color endColor)
{
MapObjects2.ClassBreaksRenderer oClassBreakRender = new MapObjects2.ClassBreaksRendererClass();
if (layer.shapeType == ShapeTypeConstants.moShapeTypePoint)
{
oClassBreakRender.SymbolType = SymbolTypeConstants.moPointSymbol;
}
else if (layer.shapeType == ShapeTypeConstants.moShapeTypeLine)
{
oClassBreakRender.SymbolType = SymbolTypeConstants.moLineSymbol;
}
else if (layer.shapeType == ShapeTypeConstants.moShapeTypePolygon)
{
oClassBreakRender.SymbolType = SymbolTypeConstants.moFillSymbol;
}
oClassBreakRender.Field = renderFieldName;
oClassBreakRender.BreakCount = (short)breaksCount;
MapObjects2.Statistics oStatistic = layer.Records.CalculateStatistics(renderFieldName);
double dInterval = (oStatistic.Max - oStatistic.Min) / breaksCount;
for (short i = 0; i < breaksCount; i++)
{
oClassBreakRender.set_Break(i, oStatistic.Min + dInterval * i);
}
oClassBreakRender.RampColors((uint)Utilities.Converter.ConvertSystemtoIntegerColor(startColor), (uint)Utilities.Converter.ConvertSystemtoIntegerColor(endColor));
return(oClassBreakRender);
}
/// <summary>
/// 将已设置好的样式添加到唯一值渲染中去
/// </summary>
/// <param name="layer"></param>
/// <param name="symbols"></param>
public void SetSymbolsToValueRenderedLayer(MapObjects2.MapLayer layer, Dictionary <string, MapObjects2.Symbol> symbols)
{
if (layer.Renderer == null)
{
throw new Exception("the layer has not set a render.");
}
if (layer.Renderer is MapObjects2.ValueMapRenderer)
{
throw new Exception("the layer has a render,but not a valuerender.");
}
Dictionary <string, MapObjects2.Symbol> .KeyCollection oKeys = symbols.Keys;
MapObjects2.ValueMapRenderer oValueRender = layer.Renderer as MapObjects2.ValueMapRenderer;
int iValueIndex = -1;
MapObjects2.Symbol oSymbol = null;
foreach (string sKey in oKeys)
{
iValueIndex = this.GetValueIndexByRenderValue(oValueRender, sKey);
if (iValueIndex != -1 && symbols.TryGetValue(sKey, out oSymbol))
{
this.CopySymbolToAnother(oSymbol, oValueRender.get_Symbol((short)iValueIndex));
}
}
}
public FeatureInformations GetIdentifyFeatureInfos(MapObjects2.Point mousePosition, AxMapObjects2.AxMap mapControl, MapProject.MapStruct mapInfosCollection)
{
FeatureInformations oFeatureInfos = null;
foreach (ILayerStruct oLayerInfos in mapInfosCollection.Layers)
{
if (oLayerInfos.LayerType != (short)LayerTypeConstants.moMapLayer)
{
continue;
}
MapUtil.MapOperation oMapOper = new MapOperation();
MapObjects2.MapLayer oMapLayer = oMapOper.GetLayerByName(mapControl, oLayerInfos.AliasName) as MapObjects2.MapLayer;
if (oMapLayer.Visible == false)
{
continue;
}
Recordset oSelectedRecords = oMapLayer.SearchShape(mousePosition, SearchMethodConstants.moAreaIntersect, "");
if (oSelectedRecords.EOF)
{
continue;
}
oSelectedRecords.MoveFirst();
oFeatureInfos = new FeatureInformations();
oFeatureInfos.CurrentLayerInfos = oLayerInfos;
oFeatureInfos.Geometry = oSelectedRecords.Fields.Item("shape").Value;
TableDesc oTableDesc = oSelectedRecords.TableDesc;
oFeatureInfos.FieldsAndValuesCollection = new Dictionary <string, string>();
int iFieldsCount = oTableDesc.FieldCount;
string sFieldName = "";
string sValue = "";
for (short i = 0; i < iFieldsCount; i++)
{
sFieldName = oTableDesc.get_FieldName(i);
sValue = oSelectedRecords.Fields.Item(sFieldName).ValueAsString;
oFeatureInfos.FieldsAndValuesCollection.Add(sFieldName, sValue);
}
break;
}
return(oFeatureInfos);
}
/// <summary>
/// 给图层设置唯一值渲染
/// </summary>
/// <param name="layer"></param>
/// <param name="renderFieldName"></param>
public MapObjects2.ValueMapRenderer GetUniqueValueRender(MapObjects2.MapLayer layer, string renderFieldName)
{
MapObjects2.ValueMapRenderer oValueMapRender = new MapObjects2.ValueMapRendererClass();
MapObjects2.Recordset oRecords = layer.Records;
MapObjects2.Strings oStrings = new StringsClass();
if (layer.shapeType == ShapeTypeConstants.moShapeTypePoint)
{
oValueMapRender.SymbolType = SymbolTypeConstants.moPointSymbol;
}
else if (layer.shapeType == ShapeTypeConstants.moShapeTypeLine)
{
oValueMapRender.SymbolType = SymbolTypeConstants.moLineSymbol;
}
else if (layer.shapeType == ShapeTypeConstants.moShapeTypePolygon)
{
oValueMapRender.SymbolType = SymbolTypeConstants.moFillSymbol;
}
oValueMapRender.Field = renderFieldName;
oStrings.Unique = true;
oRecords.MoveFirst();
while (!oRecords.EOF)
{
oStrings.Add(oRecords.Fields.Item(renderFieldName).ValueAsString);
oRecords.MoveNext();
}
oValueMapRender.ValueCount = oStrings.Count;
for (short i = 0; i < oStrings.Count; i++)
{
oValueMapRender.set_Value(i, oStrings.Item(i));
}
return(oValueMapRender);
}