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
{
}
}
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>
/// Occurs when this command is clicked
/// </summary>
///
public void RasterStretchColorMapRender(IRasterLayer pRasterlayer)
{
try
{
IRaster pRaster = pRasterlayer.Raster;
int intTransPValue = 30;
IColor pFromColor = new RgbColorClass();
//Red + (0x100 * Green) + (0x10000 * Blue);
pFromColor.RGB = 255 + 0x100 * 255;
IColor pToColor = new RgbColorClass();
pToColor.RGB = 0x10000 * 255;
IRasterStretchColorRampRenderer pStretchRender = (IRasterStretchColorRampRenderer)pRasterlayer.Renderer;
IRasterRenderer pRasterRender = default(IRasterRenderer);
pRasterRender = (IRasterRenderer)pStretchRender;
pRasterRender.Raster = pRaster;
pRasterRender.Update();
IAlgorithmicColorRamp pColorRamp =
new AlgorithmicColorRamp();
pColorRamp.Size = 255;
pColorRamp.FromColor = pFromColor;
pColorRamp.ToColor = pToColor;
bool outvalue = true;
pColorRamp.CreateRamp(out outvalue);
pStretchRender.BandIndex = 0;
pStretchRender.ColorRamp = pColorRamp;
if (intTransPValue > 0)
{
IRasterDisplayProps pRRenProp =
(IRasterDisplayProps)pStretchRender;
pRRenProp.TransparencyValue = intTransPValue;
}
pRasterRender.Update();
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
}
}
/// <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;
}
//yjl 20110827 modify 根据渲染对象初始化界面
public void InitRasterRendererObject(IRasterLayer inRL, IRasterRenderer pRenderer)
{
flag = true;
IRaster pRaster = inRL.Raster;
IRasterBandCollection pRBC = pRaster as IRasterBandCollection;
IRasterBand pRB = pRBC.Item(0);//获取第一波段
bool hasStatis = false;
pRB.HasStatistics(out hasStatis);
if (!hasStatis)
{
pRB.ComputeStatsAndHist();//统计直方图
}
IRasterStatistics pRStatis = pRB.Statistics;
minValueInput.Value = pRStatis.Minimum;//最大最小值
maxValueInput.Value = pRStatis.Maximum;
IRasterStretchColorRampRenderer pRSCRRenderer = pRenderer as IRasterStretchColorRampRenderer;
if (pRSCRRenderer.ColorScheme != "")
{
cmbColorRamp.Text = pRSCRRenderer.ColorScheme;//颜色方案
}
DevComponents.Editors.ComboItem selItem = cmbColorRamp.SelectedItem as DevComponents.Editors.ComboItem;
Bitmap bmp = new Bitmap(selItem.Image);
bmp.RotateFlip(RotateFlipType.Rotate270FlipNone);
pBoxColorRamp.Image = bmp;
//txtMaxLb.Text=pRSCRRenderer.LabelHigh;//标签
//txtMinLb.Text=pRSCRRenderer.LabelLow;
IRasterStretch pRStretch = pRSCRRenderer as IRasterStretch;
if (pRStretch.Background)//背景值
{
checkBackgroundColor.Checked = true;
dbBackgrdVal.Value = pRStretch.get_BackgroundValues();
IColor pColor = pRStretch.BackgroundColor; //esri color
System.Drawing.Color bakColor = cWinColor(pColor);
colorPickerBackGround.SelectedColor = bakColor; //背景值颜色
}
else
{
checkBackgroundColor.Checked = false;
dbBackgrdVal.Enabled = false;
}
if (pRStretch.Invert)//色带方向
{
checkReverse.Checked = true;
}
else
{
checkReverse.Checked = false;
}
IRasterDisplayProps pRDP = pRSCRRenderer as IRasterDisplayProps;
System.Drawing.Color nodataColor = cWinColor(pRDP.NoDataColor);
colorPickerNoData.SelectedColor = nodataColor;//无效值颜色
flag = false;
}
