public void SetRasterNoDataColor()
{
try
{
if (m_pLyr == null)
{
return;
}
ILayer pLayer = m_pLyr;
if (!(pLayer is IRasterLayer) && !(pLayer is IRasterCatalogLayer))
{
return;
}
//获得当前图层的符号
IRasterRenderer pRasterRender = null;
if (pLayer is IRasterLayer)
{
IRasterLayer pRasterLayer = pLayer as IRasterLayer;
pRasterRender = pRasterLayer.Renderer;
}
else if (pLayer is IRasterCatalogLayer)
{
IRasterCatalogLayer pRasterCatalogLayer = pLayer as IRasterCatalogLayer;
pRasterRender = pRasterCatalogLayer.Renderer;
}
else
{
return;
}
if (pRasterRender == null)
{
return;
}
IRasterDisplayProps pRasterDisplayProps = pRasterRender as IRasterDisplayProps;
if (pRasterDisplayProps == null)
{
return;
}
//获得当前的颜色值 并设置
IColor pColor = ConvertColorToIColor(this.colorNoData.SelectedColor);
pColor.Transparency = (byte)this.sliderTransparency.Value;
pRasterDisplayProps.NoDataColor = pColor;
}
catch
{
}
}
/// <summary>
/// 从图层获取符号方案
/// </summary>
/// <param name="pLayer"></param>
/// <returns></returns>
private ESRI.ArcGIS.Carto.IRasterRenderer GetRasterRenderer(ESRI.ArcGIS.Carto.ILayer pLayer)
{
IRasterRenderer pRasterRender = null;
if (pLayer is IRasterLayer)
{
IRasterLayer pRasterLayer = pLayer as IRasterLayer;
pRasterRender = pRasterLayer.Renderer;
}
else if (pLayer is IRasterCatalogLayer)
{
IRasterCatalogLayer pRasterCatalogLayer = pLayer as IRasterCatalogLayer;
pRasterRender = pRasterCatalogLayer.Renderer;
}
return(pRasterRender);
}
private void InitRasterInfo()
{
if (m_pLyr == null)
{
return;
}
ILayer pLayer = m_pLyr;
if (!(pLayer is IRasterLayer) && !(pLayer is IRasterCatalogLayer))
{
return;
}
//获得当前图层的符号
IRasterRenderer pRasterRender = null;
if (pLayer is IRasterLayer)
{
IRasterLayer pRasterLayer = pLayer as IRasterLayer;
pRasterRender = pRasterLayer.Renderer;
}
else if (pLayer is IRasterCatalogLayer)
{
IRasterCatalogLayer pRasterCatalogLayer = pLayer as IRasterCatalogLayer;
pRasterRender = pRasterCatalogLayer.Renderer;
}
else
{
return;
}
if (pRasterRender == null)
{
return;
}
IRasterDisplayProps pRasterDisplayProps = pRasterRender as IRasterDisplayProps;
if (pRasterDisplayProps == null)
{
return;
}
IColor pColor = pRasterDisplayProps.NoDataColor;
//设置界面
this.colorNoData.SelectedColor = System.Drawing.ColorTranslator.FromOle(pColor.RGB);
this.sliderTransparency.Value = (int)pColor.Transparency;
}
/// <summary>
/// 设置NoData的颜色值
/// </summary>
/// <param name="pLayer"></param>
public static void SetRasterDefaultNoDataColor(ILayer pLayer)
{
if (pLayer == null)
{
return;
}
//获得当前图层的符号
IRasterRenderer pRasterRender = null;
if (pLayer is IRasterLayer)
{
IRasterLayer pRasterLayer = pLayer as IRasterLayer;
pRasterRender = pRasterLayer.Renderer;
}
else if (pLayer is IRasterCatalogLayer)
{
IRasterCatalogLayer pRasterCatalogLayer = pLayer as IRasterCatalogLayer;
pRasterRender = pRasterCatalogLayer.Renderer;
}
else
{
return;
}
if (pRasterRender == null)
{
return;
}
//设置NoData颜色值
IColor pColor = null;
if (pRasterRender is IRasterRGBRenderer) //默认是白色 //changed by chulili 20110825 0是透明 全部默认Nodata颜色是透明
{
pColor = GetColorRGB(255, 255, 255, 0);
}
else if (pRasterRender is IRasterUniqueValueRenderer)//默认是白色
{
pColor = GetColorRGB(255, 255, 255, 0);
}
else if (pRasterRender is IRasterStretchColorRampRenderer)//默认是透明色 0是透明
{
pColor = GetColorRGB(255, 255, 255, 0);
}
else if (pRasterRender is IRasterClassifyColorRampRenderer)//默认是白色
{
pColor = GetColorRGB(255, 255, 255, 0);
}
else
{
return;
}
//设置颜色
IRasterDisplayProps pRasterDisplayProps = pRasterRender as IRasterDisplayProps;
if (pRasterDisplayProps == null)
{
return;
}
pRasterDisplayProps.NoDataColor = pColor;
}
