/// <summary>
/// 根据单波段拉伸渲染
/// </summary>
/// <param name="rasterDataset">栅格数据集</param>
/// <param name="graypos">第几波段</param>
/// <param name="stretchType">拉伸方式</param>
/// <param name="pFromColor">fromColor</param>
/// <param name="pToColor">toColor</param>
/// <returns></returns>
public static IRasterRenderer StretchRenderer(ESRI.ArcGIS.Geodatabase.IRasterDataset rasterDataset, int graypos,
esriRasterStretchTypesEnum stretchType, IRgbColor pFromColor, IRgbColor pToColor)
{
try
{
//Create the color ramp.
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 255;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
//Create a stretch renderer.
IRasterStretchColorRampRenderer stretchRenderer = new
RasterStretchColorRampRendererClass();
IRasterRenderer rasterRenderer = (IRasterRenderer)stretchRenderer;
//Set the renderer properties.
IRaster raster = rasterDataset.CreateDefaultRaster();
rasterRenderer.Raster = raster;
rasterRenderer.Update();
stretchRenderer.BandIndex = graypos;
stretchRenderer.ColorRamp = colorRamp;
//Set the stretch type.
IRasterStretch pRasterStretch = (IRasterStretch)rasterRenderer;
pRasterStretch.StretchType = stretchType;
pRasterStretch.StandardDeviationsParam = 2;
return(rasterRenderer);
}
catch
{
return(null);
}
}
private void StretchRender()
{
if (comboBoxBand.SelectedItem == null)
{
MessageBox.Show("波段不能为空！");
return;
}
IColorRamp pColorRamp = (IColorRamp)EnumStyleItem[comboBoxColor.SelectedIndex];
IRasterLayer pRasterLayr = m_layer as IRasterLayer;
IRasterStretchColorRampRenderer pStretchRenderer = new RasterStretchColorRampRendererClass();
IRasterRenderer pRasterRenderer = (IRasterRenderer)pStretchRenderer;
IRaster pRaster = pRasterLayr.Raster;
pRasterRenderer.Raster = pRaster;
pRasterRenderer.Update();
pStretchRenderer.BandIndex = comboBoxBand.SelectedIndex;
pStretchRenderer.ColorRamp = pColorRamp;
IRasterStretch pStretchType = (IRasterStretch)pRasterRenderer;
pStretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;
pStretchType.StandardDeviationsParam = Convert.ToDouble(textBoxStandardValue.Text);
pRasterLayr.Renderer = pRasterRenderer;
m_mapControl3.Refresh();
}
public IRasterLayer RasterRenderedLayer(IRasterLayer pRL, bool renderType, int grayBandIndex, int[] rgbBandIndex)
{
//实例新的栅格图层
IRasterLayer rlayer = new RasterLayerClass();
string fullPath = pRL.FilePath;
IRasterDataset rasterDataset = OpenFileRasterDataset(fullPath);
//单波段
if (rgbBandIndex == null)
{
//如果grayBandIndex=-1
try
{
//定义拉伸颜色条
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = this.userControl_Color1.FromColor.R;
pFromColor.Green = this.userControl_Color1.FromColor.G;
pFromColor.Blue = this.userControl_Color1.FromColor.B;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = this.userControl_Color1.ToColor.R;
pToColor.Green = this.userControl_Color1.ToColor.G;
pToColor.Blue = this.userControl_Color1.ToColor.B;
IRasterRenderer render = null;
render = BandCombinationShow.StretchRenderer(rasterDataset, grayBandIndex, this.stretchType, pFromColor, pToColor);
rlayer.CreateFromDataset(rasterDataset);
rlayer.Renderer = render as IRasterRenderer;
return(rlayer);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return(null);
}
}
else//多波段显示
{
try
{
//设置彩色合成顺序 生成新的渲染模式
IRasterRGBRenderer render = new RasterRGBRendererClass();
render.RedBandIndex = rgbBandIndex[0];
render.GreenBandIndex = rgbBandIndex[1];
render.BlueBandIndex = rgbBandIndex[2];
IRasterStretch stretchType = (IRasterStretch)render;
stretchType.StretchType = this.stretchType;
stretchType.StandardDeviationsParam = 2;
rlayer.CreateFromDataset(rasterDataset);
rlayer.Renderer = render as IRasterRenderer;
return(rlayer);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return(null);
}
}
}
/// <summary>
/// 拉伸渲染模式（貌似）
/// </summary>
/// <param name="rasterDataset"></param>
/// <returns></returns>
private static IRasterRenderer StretchRenderer(ESRI.ArcGIS.Geodatabase.IRasterDataset rasterDataset, int graypos, int i)
{
try
{
//Define the from and to colors for the color ramp.
IRgbColor fromColor = new RgbColorClass();
fromColor.Red = 255;
fromColor.Green = 0;
fromColor.Blue = 0;
IColor toColor = new RgbColorClass();
//此处应该是写错了
fromColor.Red = 0;
fromColor.Green = 255;
fromColor.Blue = 0;
//Create the color ramp.
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 255;
colorRamp.FromColor = fromColor;
colorRamp.ToColor = toColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
//Create a stretch renderer.
IRasterStretchColorRampRenderer stretchRenderer = new
RasterStretchColorRampRendererClass();
//设置显示对比度和亮度
//((IRasterDisplayProps)stretchRenderer).BrightnessValue = -90;
IRasterRenderer rasterRenderer = (IRasterRenderer)stretchRenderer;
//Set the renderer properties.
IRaster raster = rasterDataset.CreateDefaultRaster();
rasterRenderer.Raster = raster;
rasterRenderer.Update();
stretchRenderer.BandIndex = graypos;
//stretchRenderer.ColorRamp = colorRamp;
//Set the stretch type.
IRasterStretch stretchType = (IRasterStretch)rasterRenderer;
stretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;
stretchType.StandardDeviationsParam = 2;
return(rasterRenderer);
}
catch
{
return(null);
}
}
/// <summary>
/// Creates a renderer for output rasters.
/// </summary>
/// <param name="pRL"></param>
/// <param name="pColor1"></param>
/// <param name="pColor2"></param>
private void CreateRasterStretchRenderer(IRasterLayer pRL, IRgbColor pColor1, IRgbColor pColor2)
{
try
{
IRaster pRaster = pRL.Raster;
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRendererClass();
IRasterRenderer pRasRen;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
IStyleGallery pGallery = new StyleGalleryClass();
bool bCreate;
//create renderer
pRasRen = (IRasterRenderer)pStretchRen;
pRasRen.Raster = pRaster;
pRasRen.Update();
//create color ramp
pRamp.Size = 255;
pRamp.FromColor = pColor1;
pRamp.ToColor = pColor2;
pRamp.CreateRamp(out bCreate);
//apply the color ramp
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
IRasterStretch pRasStretch = (IRasterStretch)pStretchRen;
pRasStretch.Background = true;
double dValue = 0;
pRasStretch.set_BackgroundValues(ref dValue);
pRasRen.Update();
pRL.Renderer = (IRasterRenderer)pStretchRen;
ArcMap.Document.ActiveView.Refresh();
ArcMap.Document.UpdateContents();
}
catch (Exception ex)
{
clsStatic.ShowErrorMessage(ex.ToString());
}
}
public static IRasterRenderer StretchRender(IRasterDataset pRasterDataset)
{
try
{
//Define the from and to colors for the color ramp
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 0;
pToColor.Green = 255;
pToColor.Blue = 0;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
pRamp.Size = 10;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool createColorRamp;
pRamp.CreateRamp(out createColorRamp);
//create a stretch renderer
IRasterStretchColorRampRenderer pStrechRenderer = new RasterStretchColorRampRendererClass();
IRasterRenderer pRasterRenderer = (IRasterRenderer)pStrechRenderer;
//set the renderer properties
IRaster pRaster = pRasterDataset.CreateDefaultRaster();
pRasterRenderer.Raster = pRaster;
pRasterRenderer.Update();
//
pStrechRenderer.BandIndex = 0;
pStrechRenderer.ColorRamp = pRamp;
IRasterStretch pStretchType = (IRasterStretch)pRasterRenderer;
pStretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;
pStretchType.StandardDeviationsParam = 2;
return(pRasterRenderer);
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
/// <summary>
/// 拉伸渲染
/// </summary>
/// <param name="rasterLayer">渲染图层</param>
/// <param name="stretType">拉伸类型</param>
/// <param name="pStyleGalleryItem">颜色带样式</param>
public static void RasterStretchRenderer(IRasterLayer rasterLayer, esriRasterStretchTypesEnum stretType,
IStyleGalleryItem pStyleGalleryItem)
{
if (pStyleGalleryItem == null)
{
MessageBox.Show(@"Color ramp cannot be empty");
return;
}
//创建拉伸渲染
IRasterStretchColorRampRenderer stretchRenderer = new RasterStretchColorRampRendererClass();
IRasterRenderer rasterRenderer = (IRasterRenderer)stretchRenderer;
//设置拉伸渲染参数属性
IRaster raster = rasterLayer.Raster;
rasterRenderer.Raster = raster;
rasterRenderer.Update();
stretchRenderer.BandIndex = 0;
stretchRenderer.ColorRamp = RenderHelper.GetColorRamp(pStyleGalleryItem, 255);
//设置拉伸类型
IRasterStretch stretchType = (IRasterStretch)rasterRenderer;
stretchType.StretchType = stretType;
rasterLayer.Renderer = rasterRenderer;
}
/// <summary>
///对Raster根据数据行进行渲染，可以渲染成单通道灰度显示和RGB合成显示
/// </summary>
/// <param name="renderType">渲染方式调节</param>
/// <returns></returns>
public IRasterLayer RasterRenderedLayer(IRasterLayer pRL, bool renderType, int grayBandIndex, int[] rgbBandIndex)
{
//实例新的栅格图层
IRasterLayer rlayer = new RasterLayerClass();
string fullPath = pRL.FilePath;
IRasterDataset rasterDataset = OpenFileRasterDataset(fullPath);
//单波段
if (rgbBandIndex == null)
{
//如果grayBandIndex=-1
try
{
IRasterRenderer render = null;
render = BandCombinationShow.StretchRenderer(rasterDataset, grayBandIndex);
rlayer.CreateFromDataset(rasterDataset);
rlayer.Renderer = render as IRasterRenderer;
return(rlayer);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return(null);
}
}
else//多波段显示
{
try
{
if (!renderType)
{
IRasterRenderer render = BandCombinationShow.StretchRenderer(rasterDataset, grayPos);
rlayer.CreateFromDataset(rasterDataset);
rlayer.Renderer = render as IRasterRenderer;
}
else
{
//设置彩色合成顺序 生成新的渲染模式
IRasterRGBRenderer render = new RasterRGBRendererClass();
render.RedBandIndex = rgbBandIndex[0];
render.GreenBandIndex = rgbBandIndex[1];
render.BlueBandIndex = rgbBandIndex[2];
IRasterStretch stretchType = (IRasterStretch)render;
stretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;
stretchType.StandardDeviationsParam = 2;
rlayer.CreateFromDataset(rasterDataset);
rlayer.Renderer = render as IRasterRenderer;
}
return(rlayer);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return(null);
}
}
}
//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;
}
/// <summary>
/// 初始化与拉伸相关控件
/// </summary>
private void initstreach()
{
string sInstall = ClsGDBDataCommon.GetParentPathofExe() + @"Resource\Style\ESRI.ServerStyle";
axSymbologyControl1.LoadStyleFile(sInstall);
axSymbologyControl1.StyleClass = esriSymbologyStyleClass.esriStyleClassColorRamps;
pSymbolClass = axSymbologyControl1.GetStyleClass(esriSymbologyStyleClass.esriStyleClassColorRamps);
pRasterRender = pRLayer.Renderer;
pRasterRenderColorRamp = pRasterRender as IRasterRendererColorRamp;
//生成色度带
if (pRasterRender is IRasterStretchColorRampRenderer)
{
IStyleGalleryItem pStyleGalleryItem = new ServerStyleGalleryItem();
pStyleGalleryItem.Item = pRasterRenderColorRamp.ColorRamp;
pSymbolClass.AddItem(pStyleGalleryItem, 0);
pSymbolClass.SelectItem(0);
}
for (int i = 0; i < pSymbolClass.get_ItemCount(pSymbolClass.StyleCategory); i++)
{
stdole.IPictureDisp pPicture = pSymbolClass.PreviewItem(pSymbolClass.GetItem(i), cmbColorRamp.Width, cmbColorRamp.Height);
Image image = Image.FromHbitmap(new System.IntPtr(pPicture.Handle));
cmbColorRamp.Items.Add(image);
}
if (cmbColorRamp.Items.Count > 0)
{
cmbColorRamp.SelectedIndex = 0;
}
//判断拉伸方式和拉伸波段
if (pRasterRender is IRasterStretchColorRampRenderer)
{
pSCRampRender = pRasterRender as IRasterStretchColorRampRenderer;
pRasterStretch = pRasterRender as IRasterStretch;
int bandindex = pSCRampRender.BandIndex;
cmbBand.SelectedIndex = bandindex;
if (pRasterStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_Custom)
{
cmbStreach.SelectedIndex = 1;
}
else if (pRasterStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_MinimumMaximum)
{
cmbStreach.SelectedIndex = 2;
}
else if (pRasterStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations)
{
cmbStreach.SelectedIndex = 3;
}
else if (pRasterStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_HistogramEqualize)
{
cmbStreach.SelectedIndex = 4;
}
else
{
cmbStreach.SelectedIndex = 0;
}
lblminstr.Text = pSCRampRender.LabelLow;
lblmaxstr.Text = pSCRampRender.LabelHigh;
txtmin.Text = pSCRampRender.LabelLow;
txtmax.Text = pSCRampRender.LabelHigh;
if (pRasterStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_MinimumMaximum)
{
txtmax.Visible = true;
txtmin.Visible = false;
}
}
else
{
cmbBand.SelectedIndex = 0;
cmbStreach.SelectedIndex = 0;
}
isminmax = true;
}
private void btnuse_Click(object sender, EventArgs e)
{
if (treeshow.SelectedIndex == 1)
{
IRasterRGBRenderer2 pRRGBRenderUse = new RasterRGBRendererClass();
if ((bool)gridsymbol.Rows[0].Cells[0].Value == true)
{
pRRGBRenderUse.UseRedBand = true;
}
else
{
pRRGBRenderUse.UseRedBand = false;
}
if ((bool)gridsymbol.Rows[1].Cells[0].Value == true)
{
pRRGBRenderUse.UseGreenBand = true;
}
else
{
pRRGBRenderUse.UseGreenBand = false;
}
if ((bool)gridsymbol.Rows[2].Cells[0].Value == true)
{
pRRGBRenderUse.UseBlueBand = true;
}
else
{
pRRGBRenderUse.UseBlueBand = false;
}
if ((bool)gridsymbol.Rows[3].Cells[0].Value == true)
{
pRRGBRenderUse.UseAlphaBand = true;
}
else
{
pRRGBRenderUse.UseAlphaBand = false;
}
pRRGBRenderUse.RedBandIndex = cmbred.SelectedIndex;
pRRGBRenderUse.GreenBandIndex = cmbgreen.SelectedIndex;
pRRGBRenderUse.BlueBandIndex = cmbblue.SelectedIndex;
pRRGBRenderUse.AlphaBandIndex = cmbalpha.SelectedIndex;
pRLayer.Renderer = (IRasterRenderer)pRRGBRenderUse;
}
else
{
if (pRStretch.StretchType == esriRasterStretchTypesEnum.esriRasterStretch_MinimumMaximum)
{
if (txtmin.Text == "" && txtmax.Text != "")
{
MessageBox.Show("请设置拉伸的最小值", "提示", MessageBoxButtons.OK);
}
else if (txtmax.Text == "" && txtmin.Text != "")
{
MessageBox.Show("请设置拉伸的最大值", "提示", MessageBoxButtons.OK);
}
else if (txtmax.Text == "" && txtmin.Text == "")
{
MessageBox.Show("请设置拉伸的最大值以及最小值", "提示", MessageBoxButtons.OK);
}
else
{
pRasterStretchMinMax = (IRasterStretchMinMax)pRStretch;
pRasterStretchMinMax.UseCustomStretchMinMax = true;
pRasterStretchMinMax.CustomStretchMin = double.Parse(txtmin.Text);
pRasterStretchMinMax.CustomStretchMax = double.Parse(txtmax.Text);
pRStretch = (IRasterStretch)pRasterStretchMinMax;
pRStretch.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_MinimumMaximum;
}
}
if (chkdisplay.Checked == true)
{
pRStretch.Background = true;
pRStretch.BackgroundColor = ClsGDBDataCommon.ColorToIColor(colbackg.SelectedColor);
pRStretch.set_BackgroundValues(Convert.ToDouble(backvalue.Text));
}
else
{
pRStretch.Background = false;
}
IRasterStretchColorRampRenderer pStretchColorRasterRenderer = (IRasterStretchColorRampRenderer)pRStretch;;
IRasterRenderer pRasterRenderer = pStretchColorRasterRenderer as IRasterRenderer;
pRasterRenderer.Raster = pRLayer.Raster;
pRasterRenderer.Update();
pStretchColorRasterRenderer.BandIndex = cmbBand.SelectedIndex;
pStretchColorRasterRenderer.ColorRamp = PColorramp as IColorRamp;
pRasterRenderer.Update();
pRLayer.Renderer = pStretchColorRasterRenderer as IRasterRenderer;
}
if (pTocContral.Buddy == pMapContral.Object)
{
pTocContral.SetBuddyControl(pMapContral);
pMapContral.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
pTocContral.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}
else if (pTocContral.Buddy.Equals(pSceneControl.Object))
{
pTocContral.SetBuddyControl(pSceneControl);
IActiveView pActiveView = pSceneControl.Scene as IActiveView;
pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, pRLayer, null);
pTocContral.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}
}
