//
//更改栅格唯一值渲染符号
//
private void RenderRasterUniqueValue(ILayer layerOrElement, IRasterUniqueValueRenderer rasterUniqueValueRenderer, ISymbol symbol, int iHeading, int iClass)
{
esriSymbologyStyleClass styleClass;
if (symbol is IFillSymbol)
{
styleClass = esriSymbologyStyleClass.esriStyleClassFillSymbols;
}
else if (symbol is IMarkerSymbol)
{
styleClass = esriSymbologyStyleClass.esriStyleClassMarkerSymbols;
}
else
{
if (!(symbol is ILineSymbol))
{
return;
}
styleClass = esriSymbologyStyleClass.esriStyleClassLineSymbols;
}
IStyleGalleryItem item = new frmSymbolSelector
{
Owner = EnviVars.instance.MainForm
}.GetItem(styleClass, symbol);
if (item != null)
{
rasterUniqueValueRenderer.set_Symbol(iHeading, iClass, item.Item as ISymbol);
this._mapControl.ActiveView.ContentsChanged();
this._mapControl.Refresh(esriViewDrawPhase.esriViewGeography, layerOrElement, null);
}
}
private void AsignarColorAClase(int iClase, string sEtiqueta, int red, int green, int blue, IRasterUniqueValueRenderer pRUVRenderer)
{
IColorSymbol pColorSymbol = new ColorSymbolClass();
pRUVRenderer.AddValue(0, iClase, iClase);
pRUVRenderer.set_Label(0, iClase, sEtiqueta);
IRgbColor pColor = new RgbColorClass();
pColor.Red = red;
pColor.Green = green;
pColor.Blue = blue;
pColorSymbol.Color = pColor as IColor;
pRUVRenderer.set_Symbol(0, iClase, pColorSymbol as ISymbol);
}
/// <summary>
/// 添加唯一值和设置标注符号
/// </summary>
/// <param name="uniqueValueRenderer">唯一值渲染</param>
/// <param name="uniqueValue">唯一值</param>
/// <param name="enumColors">颜色带</param>
private static void AddValueAndSetLabelSymbol <T>(IRasterUniqueValueRenderer uniqueValueRenderer, List <T> uniqueValue,
IEnumColors enumColors)
{
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
for (int i = 0; i < uniqueValue.Count; i++)
{
object currentValue = uniqueValue[i];
uniqueValueRenderer.AddValue(0, i, currentValue);
fillSymbol.Color = enumColors.Next();
string valueLabel = currentValue.ToString();
if (StringHelper.IsNumeric(valueLabel))
{
//获取四位小数的字符串
valueLabel = GetRound(currentValue);
}
uniqueValueRenderer.set_Label(0, i, valueLabel);
uniqueValueRenderer.set_Symbol(0, i, (ISymbol)fillSymbol);
}
}