public Thematic(IMapControl3 mapControl)
{
if (mapControl != null)
{
this._mapControl = mapControl;
}
_renderer = new ClassBreaksRendererClass();
_classify = new QuantileClass();
_tableHistogram = new BasicTableHistogramClass();
_colorFrom = new HsvColorClass();
_colorTo = new HsvColorClass();
_algClrRamp = new AlgorithmicColorRampClass();
}
private void UpdateRamp()
{
//
// Create a new AlgorithmicColorRamp object, and get it's
// IAlgorithmicColorRamp interface.
//
IAlgorithmicColorRamp AlgortihmicColorRamp = null;
AlgortihmicColorRamp = new ESRI.ArcGIS.Display.AlgorithmicColorRamp();
//
// Set the size of the color ramp to the number of classes
// to be renderered.
//
AlgortihmicColorRamp.Size = m_lngClasses;
//
// Set the color ramps properties.
//
IRgbColor RGBColor = null;
RGBColor = new RgbColor();
RGBColor.RGB = System.Drawing.ColorTranslator.ToOle(txtStartColor.BackColor);
AlgortihmicColorRamp.FromColor = RGBColor;
RGBColor.RGB = System.Drawing.ColorTranslator.ToOle(txtEndColor.BackColor);
AlgortihmicColorRamp.ToColor = RGBColor;
AlgortihmicColorRamp.Algorithm = (esriColorRampAlgorithm)cmbAlgorithm.SelectedIndex;
bool boolRamp = false;
if (AlgortihmicColorRamp.Size > 0)
{
boolRamp = true;
AlgortihmicColorRamp.CreateRamp(out boolRamp);
if (boolRamp)
{
m_enumNewColors = AlgortihmicColorRamp.Colors;
m_enumNewColors.Reset();
cmdOK.Enabled = true;
//
// Check if we should be showing the colors.
//
if (chkShowColors.CheckState == System.Windows.Forms.CheckState.Checked)
{
//
// Populate the Colors textbox array and it's labels.
//
m_lngColors = 0;
ShowColorsArray();
}
}
}
}
public static IRasterRenderer CreateDEMColorRamp(Raster gRaster)
{
IColor pStartColor = (IColor)CreateRGBColor(255, 235, 176);
IColor pEndColor = (IColor)CreateRGBColor(38, 115, 0);
IAlgorithmicColorRamp pColorRamp1 = CreateAlgorithmicColorRamp(pStartColor, pEndColor);
pStartColor = (IColor)CreateRGBColor(38, 115, 0);
pEndColor = (IColor)CreateRGBColor(115, 77, 0);
IAlgorithmicColorRamp pColorRamp2 = CreateAlgorithmicColorRamp(pStartColor, pEndColor);
pStartColor = (IColor)CreateRGBColor(115, 77, 0);
pEndColor = (IColor)CreateRGBColor(255, 255, 255);
IAlgorithmicColorRamp pColorRamp3 = CreateAlgorithmicColorRamp(pStartColor, pEndColor);
List <IColorRamp> lColorRamps = new List <IColorRamp>(new IColorRamp[] { pColorRamp1, pColorRamp2, pColorRamp3 });
IMultiPartColorRamp pMultiPartColorRamp = CreateMultiPartColorRamp(lColorRamps);
return(CreateContinuousRenderer(gRaster, pMultiPartColorRamp));
}
private ESRI.ArcGIS.Display.IColor GetCombinedColor(IColor pColor1, IColor pColor2, EColorCombinationType eCombinationMethod, IColor pOriginColor)
{
// combines the input colors based on m_eColorCombinationMethod
// (11/08/04) -- RGB and enuLabLChColorRamp aren't used by GUI
IColor pOutColor = null;
long MyOLE_COLOR = 0; // As OLE_COLOR in VB6
IRgbColor pMainRGBColor = null;
IRgbColor pVariationRGBColor = null;
IRgbColor pMergedRGBColor = null;
bool bOK = false;
IAlgorithmicColorRamp pAlgorithmicCR = null;
// if either of the colors are null, then don't run the color through any algorithm,
// instead, just return the other color. if both are null, then return a null color
if (pColor1.NullColor)
{
pOutColor = pColor2;
}
else if (pColor2.NullColor)
{
pOutColor = pColor1;
}
else if (eCombinationMethod == EColorCombinationType.enuComponents)
{
// HSV components
// create a new HSV color
IHsvColor pHSVDrawColor = null;
pHSVDrawColor = new HsvColor();
// get HSV values from Color1 and Color2 and assign to pHSVDrawColor
IHsvColor pHSVColor1 = null;
IHsvColor pHSVColor2 = null;
// (new 4/27/04) didn't think I had to do this...
//pHSVColor1 = pColor1
//pHSVColor2 = pColor2
pHSVColor1 = new HsvColor();
pHSVColor1.RGB = pColor1.RGB;
pHSVColor2 = new HsvColor();
pHSVColor2.RGB = pColor2.RGB;
pHSVDrawColor.Hue = pHSVColor1.Hue;
pHSVDrawColor.Saturation = pHSVColor2.Saturation;
pHSVDrawColor.Value = pHSVColor2.Value;
pOutColor = pHSVDrawColor;
}
else if (eCombinationMethod == EColorCombinationType.enuRGBAverage)
{
// use additive color model to merge the two colors
MyOLE_COLOR = pColor1.RGB;
pMainRGBColor = new RgbColor();
pMainRGBColor.RGB = (int)MyOLE_COLOR;
MyOLE_COLOR = pColor2.RGB;
pVariationRGBColor = new RgbColor();
pVariationRGBColor.RGB = (int)MyOLE_COLOR;
// merged color = RGB average of the two colors
pMergedRGBColor = new RgbColor();
pMergedRGBColor.Red = (pMainRGBColor.Red + pVariationRGBColor.Red) / 2;
pMergedRGBColor.Green = (pMainRGBColor.Green + pVariationRGBColor.Green) / 2;
pMergedRGBColor.Blue = (pMainRGBColor.Blue + pVariationRGBColor.Blue) / 2;
pOutColor = pMergedRGBColor;
}
else if ((eCombinationMethod == EColorCombinationType.enuCIELabColorRamp) | (eCombinationMethod == EColorCombinationType.enuLabLChColorRamp))
{
// use color ramp and take central color between the two colors
pAlgorithmicCR = new AlgorithmicColorRamp();
if (m_eColorCombinationMethod == EColorCombinationType.enuCIELabColorRamp)
pAlgorithmicCR.Algorithm = esriColorRampAlgorithm.esriCIELabAlgorithm;
else
pAlgorithmicCR.Algorithm = esriColorRampAlgorithm.esriLabLChAlgorithm;
pAlgorithmicCR.Size = 3;
pAlgorithmicCR.FromColor = pColor1;
pAlgorithmicCR.ToColor = pColor2;
pAlgorithmicCR.CreateRamp(out bOK);
pOutColor = pAlgorithmicCR.get_Color(1); // middle color in ramp
}
else // EColorCombinationType.enuCIELabMatrix
{
double[] iLab1 = new double[4]; // L, a, b values for Color1
double[] iLab2 = new double[4]; // L, a, b values for Color2
double[] iLabOrig = new double[4]; // L, a, b values for pOriginColor
pColor1.GetCIELAB(out iLab1[0], out iLab1[1], out iLab1[2]);
pColor2.GetCIELAB(out iLab2[0], out iLab2[1], out iLab2[2]);
pOriginColor.GetCIELAB(out iLabOrig[0], out iLabOrig[1], out iLabOrig[2]);
double[] iLabOut = new double[4];
// add color1 vector and color2 vector, then subtract the origin color vector
iLabOut[0] = iLab1[0] + iLab2[0] - iLabOrig[0];
iLabOut[1] = iLab1[1] + iLab2[1] - iLabOrig[1];
iLabOut[2] = iLab1[2] + iLab2[2] - iLabOrig[2];
CorrectLabOutofRange(ref iLabOut[0], ref iLabOut[1], ref iLabOut[2]);
IHsvColor pHSVColor = null;
pHSVColor = new HsvColor();
pHSVColor.SetCIELAB(iLabOut[0], iLabOut[1], iLabOut[2]);
pOutColor = pHSVColor;
}
return pOutColor;
}
private Bitmap DrawToPictureBox(ISymbol pSym, PictureBox pBox)
{
IGeometry pGeometry = null;
System.Drawing.Graphics pGraphics = null;
pGraphics = System.Drawing.Graphics.FromHwnd(pBox.Handle);
pGraphics.FillRectangle(System.Drawing.Brushes.White, pBox.ClientRectangle);
Bitmap image = new Bitmap(pBox.Width, pBox.Height, pGraphics);
IEnvelope pEnvelope = new EnvelopeClass();
if (pSym is IMarkerSymbol)
{
IPoint pPoint = new PointClass(); //the geometry of a MarkerSymbol
pPoint.PutCoords(pBox.Width / 2, pBox.Height / 2); //center in middle of pBox
pGeometry = pPoint;
}
if (pSym is ILineSymbol)
{
pEnvelope.PutCoords(0, pBox.Height / 2, pBox.Width, pBox.Height / 2);
IPolyline pPolyline = new PolylineClass();
pPolyline.FromPoint = pEnvelope.LowerLeft;
pPolyline.ToPoint = pEnvelope.UpperRight;
pGeometry = pPolyline;
}
if (pSym is IFillSymbol)
{
pEnvelope.PutCoords(1, 1, pBox.Width - 1, pBox.Height - 1);
pGeometry = pEnvelope;
if (pSym is IMultiLayerFillSymbol)
{
IMultiLayerFillSymbol pMultiLayerFillSymbol = pSym as IMultiLayerFillSymbol;
//For mLayers As Integer = 0 To pMultiLayerFillSymbol.LayerCount - 1
for (int i = 0; i < pMultiLayerFillSymbol.LayerCount; i++)
{
if (pMultiLayerFillSymbol.get_Layer(i) is IPictureFillSymbol)
{
IPictureFillSymbol pPictureFillSymbol = pMultiLayerFillSymbol.get_Layer(0) as IPictureFillSymbol;
image = Bitmap.FromHbitmap(new IntPtr(pPictureFillSymbol.Picture.Handle));
//m.MakeTransparent(System.Drawing.ColorTranslator.FromOle(pPictureFillSymbol.Color.RGB))
return(image);
}
else if (pMultiLayerFillSymbol.get_Layer(i) is ISimpleFillSymbol)
{
pEnvelope.PutCoords(1, 1, pBox.Width - 1, pBox.Height - 1);
pGeometry = pEnvelope;
}
else if (pMultiLayerFillSymbol.get_Layer(i) is IGradientFillSymbol)
{
IGradientFillSymbol pGradientFillSymbol = pMultiLayerFillSymbol.get_Layer(0) as IGradientFillSymbol;
IAlgorithmicColorRamp pRamp = pGradientFillSymbol.ColorRamp as IAlgorithmicColorRamp;
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(new System.Drawing.Point(0, 0), new System.Drawing.Size(pBox.Width, pBox.Height));
LinearGradientBrush lgBrush = new LinearGradientBrush(rect,
System.Drawing.ColorTranslator.FromOle(pRamp.FromColor.RGB),
System.Drawing.ColorTranslator.FromOle(pRamp.ToColor.RGB),
45);
pGraphics.FillRectangle(lgBrush, rect);
rect.Width = rect.Width - 1;
rect.Height = rect.Height - 1;
pGraphics.DrawRectangle(new Pen(ColorTranslator.FromOle(pGradientFillSymbol.Outline.Color.RGB),
(float)pGradientFillSymbol.Outline.Width), rect);
image = new Bitmap(pBox.Width, pBox.Height, pGraphics);
}
}
}
else if (pSym is IPictureFillSymbol)
{
IPictureFillSymbol pPictureFillSymbol = pSym as IPictureFillSymbol;
image = Bitmap.FromHbitmap(new IntPtr(pPictureFillSymbol.Picture.Handle));
//m.MakeTransparent(System.Drawing.ColorTranslator.FromOle(pPictureFillSymbol.Color.RGB))
return(image);
}
}
IntPtr hDC = GetDC(pBox.Handle);
pSym.SetupDC(hDC.ToInt32(), null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
if (pGeometry != null)
{
pSym.Draw(pGeometry);
}
pSym.ResetDC();
Graphics g2 = Graphics.FromImage(image);
//获得屏幕的句柄
IntPtr dc3 = pGraphics.GetHdc();
//获得位图的句柄
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, pBox.Width, pBox.Height, dc3, 0, 0, SRCCOPY);
pGraphics.ReleaseHdc(dc3); //释放屏幕句柄
g2.ReleaseHdc(dc2); //释放位图句柄
//image.Save("c:\\MyJpeg.Icon", ImageFormat.Bmp);
return(image);
}
private void DrawToPictureBox(ISymbol pSym, PictureBox pBox)
{
IGeometry pGeometry = null;
IntPtr hDC;
IEnvelope pEnvelope;
pEnvelope = new EnvelopeClass();
// Reset the PictureBox
pBox.CreateGraphics().Clear(pBox.BackColor);
try
{
if (pSym is IMarkerSymbol)
{
pEnvelope.PutCoords(pBox.Width / 2, pBox.Height / 2, pBox.Width / 2, pBox.Height / 2);
IArea pArea = pEnvelope as IArea;
pGeometry = pArea.Centroid;
}
else if (pSym is ILineSymbol)
{
pEnvelope.PutCoords(0, pBox.Height / 2, pBox.Width, pBox.Height / 2);
IPolyline pPolyline = new PolylineClass();
pPolyline.FromPoint = pEnvelope.LowerLeft;
pPolyline.ToPoint = pEnvelope.UpperRight;
pGeometry = pPolyline;
}
else if (pSym is IFillSymbol)
{
if (pSym is SimpleFillSymbol)
{
pEnvelope.PutCoords(5, 5, pBox.Width - 5, pBox.Height - 5);
pGeometry = pEnvelope;
}
else if (pSym is MultiLayerFillSymbol)
{
IMultiLayerFillSymbol pMultiLayerFillSymbol = pSym as IMultiLayerFillSymbol;
//For mLayers As Integer = 0 To pMultiLayerFillSymbol.LayerCount - 1
if (pMultiLayerFillSymbol.get_Layer(0) is PictureFillSymbol)
{
IPictureFillSymbol pPictureFillSymbol = pMultiLayerFillSymbol.get_Layer(0) as IPictureFillSymbol;
Bitmap m = Bitmap.FromHbitmap(new IntPtr(pPictureFillSymbol.Picture.Handle));
//m.MakeTransparent(System.Drawing.ColorTranslator.FromOle(pPictureFillSymbol.Color.RGB))
pBox.Image = m;
return;
}
else if (pMultiLayerFillSymbol.get_Layer(0) is SimpleFillSymbol)
{
pEnvelope.PutCoords(5, 5, pBox.Width - 5, pBox.Height - 5);
pGeometry = pEnvelope;
}
else if (pMultiLayerFillSymbol.get_Layer(0) is GradientFillSymbol)
{
IGradientFillSymbol pGradientFillSymbol = pMultiLayerFillSymbol.get_Layer(0) as IGradientFillSymbol;
IAlgorithmicColorRamp pRamp = pGradientFillSymbol.ColorRamp as IAlgorithmicColorRamp;
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(new System.Drawing.Point(0, 0), new System.Drawing.Size(pBox.Width, pBox.Height));
LinearGradientBrush lgBrush = new LinearGradientBrush(rect,
System.Drawing.ColorTranslator.FromOle(pRamp.FromColor.RGB),
System.Drawing.ColorTranslator.FromOle(pRamp.ToColor.RGB),
45);
Graphics g = pBox.CreateGraphics();
g.FillRectangle(lgBrush, rect);
rect.Width = rect.Width - 1;
rect.Height = rect.Height - 1;
g.DrawRectangle(new Pen(ColorTranslator.FromOle(pGradientFillSymbol.Outline.Color.RGB),
(float)pGradientFillSymbol.Outline.Width), rect);
}
}
else if (pSym is PictureFillSymbol)
{
IPictureFillSymbol pPictureFillSymbol = pSym as IPictureFillSymbol;
Bitmap m = Bitmap.FromHbitmap(new IntPtr(pPictureFillSymbol.Picture.Handle));
//m.MakeTransparent(System.Drawing.ColorTranslator.FromOle(pPictureFillSymbol.Color.RGB))
pBox.Image = m;
return;
}
}
hDC = GetDC(pBox.Handle);
pSym.SetupDC(hDC.ToInt32(), null);
pSym.ROP2 = esriRasterOpCode.esriROPCopyPen;
if (pGeometry != null)
{
pSym.Draw(pGeometry);
}
pSym.ResetDC();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
// 分级色彩符号化
public static void GraduatedColors(IFeatureLayer featureLayer, string fieldName, int numClasses, IMapControl2 mapControl, AxTOCControl tocControl)
{
object dataFrequency;
object dataValue;
int breakIndex;
ITable pTable = featureLayer.FeatureClass as ITable;
ITableHistogram pTableHistogram = new BasicTableHistogramClass()
{
Field = fieldName, Table = pTable
};
IBasicHistogram pBasicHistogram = (IBasicHistogram)pTableHistogram;
// 获取渲染字段的值及其出现的频率
pBasicHistogram.GetHistogram(out dataValue, out dataFrequency);
IClassifyGEN pClassifyGEN = new EqualIntervalClass();
try { pClassifyGEN.Classify(dataValue, dataFrequency, ref numClasses); }
catch { }
// 返回一个数组
double[] Classes = pClassifyGEN.ClassBreaks as double[];
int ClassesCount = Classes.GetUpperBound(0);
IClassBreaksRenderer pRenderer = new ClassBreaksRendererClass()
{
// 分级字段 分级数目 分级后的图例是否按升级顺序排序
Field = fieldName, BreakCount = ClassesCount, SortClassesAscending = true
};
// 设置分级说色所需颜色带的起止颜色
//IHsvColor pFromColor = GetHsvColor(0, 50, 96);
//IHsvColor pToColor = GetHsvColor(80, 100, 96);
IRgbColor pFromColor = GetRgbColor(255, 200, 200);
IRgbColor pToColor = GetRgbColor(255, 0, 0);
// 生成颜色带对象
IAlgorithmicColorRamp pColorRamp = CreateColorRamp(pFromColor, pToColor, ClassesCount);
// 获取色带颜色集
IEnumColors pEnumColors = pColorRamp.Colors;
// 逐一设置填充符号及每一分级的分级断点
for (breakIndex = 0; breakIndex < ClassesCount; breakIndex++)
{
IColor pColor = pEnumColors.Next();
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pColor, Style = esriSimpleFillStyle.esriSFSSolid
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pColor
};
break;
}
// 设置填充符号
pRenderer.set_Symbol(breakIndex, pSymbol);
// 设置每一级的分级断点
pRenderer.set_Break(breakIndex, Classes[breakIndex + 1]);
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
