[转] Symbol对象

GIS中的离散实体有三种：点、线、面，在ArcEngine中用三种符号对应表示，分别是：MarkSymbol、LineSymbol和FillSymbol。此外还有TextSymbol用于文字标注，3DChart用来显示饼图等三维对象。

所有符号都实现ISymbol和IMapLevel接口，ISymbol定义一个符号对象的基本属性和方法，IMapLevel定义属性可以确定符号显示的图层，和图层类似，用于确定符号的叠加顺序。

一、MarkerSymbol对象

　　MarkerSymbol对象用于修饰点对象符号，拥有12个子类：

Classes	Description
ArrowMarkerSymbol	箭头形式符号，箭头的样式只有一个：esriAMSPlain
BarChartSymbol	Defines a bar chart symbol.
CharacterMarker3DSymbol (3DAnalyst)	3D Character Marker Symbol component.
CharacterMarkerSymbol	字符形式符号，用于将一个点要素显示为字符状。Characterindex属性用来确定显示的字符
Marker3DSymbol (3DAnalyst)	3D Marker Symbol component.
MultiLayerMarkerSymbol	使用多个符号进行叠加生成新符号。
PictureMarkerSymbol	以图片为背景的符号，把一个点对象的外形表示为一个位图，可以指定Picture或者使用CreateMarkSymbolFromFile获取一张位图
PieChartSymbol	Defines a pie chart symbol.
SimpleMarker3DSymbol (3DAnalyst)	Simple 3D Marker Symbol component.
SimpleMarkerSymbol	简单类型点符号，有五种类型（esriSMSCircle、esriSMSSquare、esriSMSCross、esriSMSX和esriSMSDiamond）
StackedChartSymbol	Defines a stacked chart symbol.
TextMarkerSymbol (TrackingAnalyst)	Class used to create a text marker symbol used to symbolize point geometries.

　　都实现IMarkerSymbol接口，定义了Angle、Color、Size、Xoffset、Yoffset。

        private void simpleLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            simpleLineSymbol.Width = 10;

            IRgbColor rgbColor = getRGB(255, 0, 0);

            simpleLineSymbol.Color = rgbColor;

            ISymbol symbol = simpleLineSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            IActiveView activeView = this.axMapControl1.ActiveView;

            //用activeView.ScreenDisplay进行画图

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(symbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();//释放资源

        }

        private void cartographicLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ICartographicLineSymbol cartographicLineSymbol = new CartographicLineSymbolClass();//制图线符号

            cartographicLineSymbol.Cap = esriLineCapStyle.esriLCSButt;

            cartographicLineSymbol.Join = esriLineJoinStyle.esriLJSBevel;//连接方式

            cartographicLineSymbol.Width = 10;

            cartographicLineSymbol.MiterLimit = 4;//Size threshold(阈值) for showing mitered line joins.

            ILineProperties lineProperties;

            lineProperties = cartographicLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();//定义模版

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IRgbColor rgbColor = getRGB(0, 255, 0);

            cartographicLineSymbol.Color = rgbColor;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(cartographicLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void multiLayerLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IMultiLayerLineSymbol multiLayerLineSymbol = new MultiLayerLineSymbolClass();

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            simpleLineSymbol.Width = 10;

            IRgbColor rgbColor = getRGB(255, 0, 0);

            simpleLineSymbol.Color = rgbColor;

            ISymbol symbol = simpleLineSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            ICartographicLineSymbol cartographicLineSymbol = new CartographicLineSymbolClass();

            cartographicLineSymbol.Cap = esriLineCapStyle.esriLCSButt;

            cartographicLineSymbol.Join = esriLineJoinStyle.esriLJSBevel;

            cartographicLineSymbol.Width = 10;

            cartographicLineSymbol.MiterLimit = 4;

            ILineProperties lineProperties;

            lineProperties = cartographicLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            rgbColor = getRGB(0, 255, 0);

            cartographicLineSymbol.Color = rgbColor;

            multiLayerLineSymbol.AddLayer(simpleLineSymbol);

            multiLayerLineSymbol.AddLayer(cartographicLineSymbol);

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(multiLayerLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void hashLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IHashLineSymbol hashLineSymbol = new HashLineSymbolClass();

            ILineProperties lineProperties = hashLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            hashLineSymbol.Width = 2;

            hashLineSymbol.Angle = 45;

            IRgbColor hashColor = new RgbColor();

            hashColor = getRGB(0, 0, 255);

            hashLineSymbol.Color = hashColor;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(hashLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        //下面的没有看

        private void markerLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IArrowMarkerSymbol arrowMarkerSymbol = new ArrowMarkerSymbolClass();

            IRgbColor rgbColor = getRGB(255, 0, 0);

            arrowMarkerSymbol.Color = rgbColor as IColor;

            arrowMarkerSymbol.Length = 10;

            arrowMarkerSymbol.Width = 10;

            arrowMarkerSymbol.Style = esriArrowMarkerStyle.esriAMSPlain;

            IMarkerLineSymbol markerLineSymbol = new MarkerLineSymbolClass();

            markerLineSymbol.MarkerSymbol = arrowMarkerSymbol;

            rgbColor = getRGB(0, 255, 0);

            markerLineSymbol.Color = rgbColor;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(markerLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void pictureLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IPictureLineSymbol pictureLineSymbol = new PictureLineSymbolClass();

            //创建图片符号

            //string fileName = @"E:\vs2005\第五章\lesson2\lesson2\data\qq.bmp";

            string path = Directory.GetCurrentDirectory();

            string fileName = path + @"\qq.bmp";

            pictureLineSymbol.CreateLineSymbolFromFile(esriIPictureType.esriIPictureBitmap, fileName);

            IRgbColor rgbColor = getRGB(0, 255, 0);

            pictureLineSymbol.Color = rgbColor;

            pictureLineSymbol.Offset = 0;

            pictureLineSymbol.Width = 10;

            pictureLineSymbol.Rotate = false;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(pictureLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

二、LineSymbol对象

　　用于修饰线性几何对象符号。Color和Width属性为两个唯一公共属性。

　　子类有：

Classes	Description
CartographicLineSymbol	制图线符号，实现ICatographicLineSymbol（主要设置线符号的节点属性，Join：设置线要素转折处的样式）和ILineProperties接口
HashLineSymbol	离散线符号
MarkerLineSymbol	A line symbol composed of repeating markers.点线符号
MultiLayerLineSymbol	A line symbol that contains one or more layers.使用重叠符号方法产生新符号
PictureLineSymbol	A line symbol composed of either a BMP or an EMF picture.比如火车线路符号
SimpleLine3DSymbol (3DAnalyst)	Simple 3D Line Symbol component.
SimpleLineSymbol	简单线符号
TextureLineSymbol (3DAnalyst)	Texture Line Symbol component.（纹理贴图线符号）

        private void simpleLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            simpleLineSymbol.Width = 10;

            IRgbColor rgbColor = getRGB(255, 0, 0);

            simpleLineSymbol.Color = rgbColor;

            ISymbol symbol = simpleLineSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            IActiveView activeView = this.axMapControl1.ActiveView;

            //用activeView.ScreenDisplay进行画图

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(symbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();//释放资源

        }

        private void cartographicLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ICartographicLineSymbol cartographicLineSymbol = new CartographicLineSymbolClass();//制图线符号

            cartographicLineSymbol.Cap = esriLineCapStyle.esriLCSButt;

            cartographicLineSymbol.Join = esriLineJoinStyle.esriLJSBevel;//连接方式

            cartographicLineSymbol.Width = 10;

            cartographicLineSymbol.MiterLimit = 4;//Size threshold(阈值) for showing mitered line joins.

            ILineProperties lineProperties;

            lineProperties = cartographicLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();//定义模版

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IRgbColor rgbColor = getRGB(0, 255, 0);

            cartographicLineSymbol.Color = rgbColor;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(cartographicLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void multiLayerLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IMultiLayerLineSymbol multiLayerLineSymbol = new MultiLayerLineSymbolClass();

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            simpleLineSymbol.Width = 10;

            IRgbColor rgbColor = getRGB(255, 0, 0);

            simpleLineSymbol.Color = rgbColor;

            ISymbol symbol = simpleLineSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            ICartographicLineSymbol cartographicLineSymbol = new CartographicLineSymbolClass();

            cartographicLineSymbol.Cap = esriLineCapStyle.esriLCSButt;

            cartographicLineSymbol.Join = esriLineJoinStyle.esriLJSBevel;

            cartographicLineSymbol.Width = 10;

            cartographicLineSymbol.MiterLimit = 4;

            ILineProperties lineProperties;

            lineProperties = cartographicLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            rgbColor = getRGB(0, 255, 0);

            cartographicLineSymbol.Color = rgbColor;

            multiLayerLineSymbol.AddLayer(simpleLineSymbol);

            multiLayerLineSymbol.AddLayer(cartographicLineSymbol);

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(multiLayerLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void hashLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IHashLineSymbol hashLineSymbol = new HashLineSymbolClass();

            ILineProperties lineProperties = hashLineSymbol as ILineProperties;

            lineProperties.Offset = 0;

            double[] dob = new double[6];

            dob[0] = 0;

            dob[1] = 1;

            dob[2] = 2;

            dob[3] = 3;

            dob[4] = 4;

            dob[5] = 5;

            ITemplate template = new TemplateClass();

            template.Interval = 1;

            for (int i = 0; i < dob.Length; i += 2)

            {

                template.AddPatternElement(dob[i], dob[i + 1]);

            }

            lineProperties.Template = template;

            hashLineSymbol.Width = 2;

            hashLineSymbol.Angle = 45;

            IRgbColor hashColor = new RgbColor();

            hashColor = getRGB(0, 0, 255);

            hashLineSymbol.Color = hashColor;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(hashLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        //下面的没有看

        private void markerLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IArrowMarkerSymbol arrowMarkerSymbol = new ArrowMarkerSymbolClass();

            IRgbColor rgbColor = getRGB(255, 0, 0);

            arrowMarkerSymbol.Color = rgbColor as IColor;

            arrowMarkerSymbol.Length = 10;

            arrowMarkerSymbol.Width = 10;

            arrowMarkerSymbol.Style = esriArrowMarkerStyle.esriAMSPlain;

            IMarkerLineSymbol markerLineSymbol = new MarkerLineSymbolClass();

            markerLineSymbol.MarkerSymbol = arrowMarkerSymbol;

            rgbColor = getRGB(0, 255, 0);

            markerLineSymbol.Color = rgbColor;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(markerLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void pictureLineSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IPictureLineSymbol pictureLineSymbol = new PictureLineSymbolClass();

            //创建图片符号

            //string fileName = @"E:\vs2005\第五章\lesson2\lesson2\data\qq.bmp";

            string path = Directory.GetCurrentDirectory();

            string fileName = path + @"\qq.bmp";

            pictureLineSymbol.CreateLineSymbolFromFile(esriIPictureType.esriIPictureBitmap, fileName);

            IRgbColor rgbColor = getRGB(0, 255, 0);

            pictureLineSymbol.Color = rgbColor;

            pictureLineSymbol.Offset = 0;

            pictureLineSymbol.Width = 10;

            pictureLineSymbol.Rotate = false;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(pictureLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

            activeView.ScreenDisplay.FinishDrawing();

        }

三、FillSymbol对象

　　用来修饰多边形等具有面积的几何形体的符号对象。只定义Color和OutLine两个属性。

Classes	Description
ColorRampSymbol (Carto)	ESRI ColorRampSymbol for raster rendering.
ColorSymbol (Carto)	ESRI ColorSymbol for raster rendering.
DotDensityFillSymbol	Defines a dot density fill symbol, a data driven symbol commonly used with the DotDensityRenderer对象.
GradientFillSymbol	渐变颜色填充符号，IntervalCount属性来设置用户所需要的颜色梯度。
LineFillSymbol	线填充符号，表现为重复的线条，可以设置线的角度，偏移量和线之间的间隔距离。
MarkerFillSymbol	点填充符号，使用一个Marker符号作为背景填充符号，实现了IMarkerFillSymbol和IFillProperties两个接口
MultiLayerFillSymbol	多层填充符号，使用多个填充符号进行叠加
PictureFillSymbol	A fill symbol based on either a BMP or an EMF picture.
RasterRGBSymbol (Carto)	ESRI RasterRGBSymbol for raster rendering.
SimpleFillSymbol	A fill symbol comprised from a predefined set of styles.
TextureFillSymbol (3DAnalyst)	Texture Fill Symbol component.

        private void simpleFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            //简单填充符号

            ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();

            simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;

            simpleFillSymbol.Color = getRGB(255, 0, 0);

            //创建边线符号

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            simpleLineSymbol.Color = getRGB(0, 255, 0);

            simpleLineSymbol.Width = 10;

            ISymbol symbol = simpleLineSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            simpleFillSymbol.Outline = simpleLineSymbol;

            //创建面对象

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(simpleFillSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void lineFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ICartographicLineSymbol cartoLine = new CartographicLineSymbol();

            cartoLine.Cap = esriLineCapStyle.esriLCSButt;

            cartoLine.Join = esriLineJoinStyle.esriLJSMitre;

            cartoLine.Color = getRGB(255, 0, 0);

            cartoLine.Width = 2;

            //Create the LineFillSymbo

            ILineFillSymbol lineFill = new LineFillSymbol();

            lineFill.Angle = 45;

            lineFill.Separation = 10;

            lineFill.Offset = 5;

            lineFill.LineSymbol = cartoLine;

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(lineFill as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void markerFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IArrowMarkerSymbol arrowMarkerSymbol = new ArrowMarkerSymbolClass();

            IRgbColor rgbColor = getRGB(255, 0, 0);

            arrowMarkerSymbol.Color = rgbColor as IColor;

            arrowMarkerSymbol.Length = 10;

            arrowMarkerSymbol.Width = 10;

            arrowMarkerSymbol.Style = esriArrowMarkerStyle.esriAMSPlain;

            IMarkerFillSymbol markerFillSymbol = new MarkerFillSymbolClass();

            markerFillSymbol.MarkerSymbol = arrowMarkerSymbol;

            rgbColor = getRGB(0, 255, 0);

            markerFillSymbol.Color = rgbColor;

            markerFillSymbol.Style = esriMarkerFillStyle.esriMFSGrid;

            IFillProperties fillProperties = markerFillSymbol as IFillProperties;

            fillProperties.XOffset = 2;

            fillProperties.YOffset = 2;

            fillProperties.XSeparation = 15;

            fillProperties.YSeparation = 20;

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(markerFillSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void gradientFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IGradientFillSymbol gradientFillSymbol = new GradientFillSymbolClass();

            IAlgorithmicColorRamp algorithcColorRamp = new AlgorithmicColorRampClass();

            algorithcColorRamp.FromColor = getRGB(255, 0, 0);

            algorithcColorRamp.ToColor = getRGB(0, 255, 0);

            algorithcColorRamp.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm;

            gradientFillSymbol.ColorRamp = algorithcColorRamp;

            gradientFillSymbol.GradientAngle = 45;

            gradientFillSymbol.GradientPercentage = 0.9;

            gradientFillSymbol.Style = esriGradientFillStyle.esriGFSLinear;

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(gradientFillSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void pictureFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IPictureFillSymbol pictureFillSymbol = new PictureFillSymbolClass();

            //创建图片符号

            //string fileName = @"E:\vs2005\第五章\lesson2\lesson2\data\qq.bmp";

            string path = Directory.GetCurrentDirectory();

            string fileName = path + @"\qq.bmp";

            pictureFillSymbol.CreateFillSymbolFromFile(esriIPictureType.esriIPictureBitmap, fileName);

            pictureFillSymbol.Color = getRGB(0, 255, 0);

            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();

            simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;

            simpleLineSymbol.Color = getRGB(255, 0, 0);

            ISymbol symbol = pictureFillSymbol as ISymbol;

            symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;

            pictureFillSymbol.Outline = simpleLineSymbol;

            pictureFillSymbol.Angle = 45;

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(pictureFillSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

        private void multilayerFillSymbolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            IMultiLayerFillSymbol multiLayerFillSymbol = new MultiLayerFillSymbolClass();

            IGradientFillSymbol gradientFillSymbol = new GradientFillSymbolClass();

            IAlgorithmicColorRamp algorithcColorRamp = new AlgorithmicColorRampClass();

            algorithcColorRamp.FromColor = getRGB(255, 0, 0);

            algorithcColorRamp.ToColor = getRGB(0, 255, 0);

            algorithcColorRamp.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm;

            gradientFillSymbol.ColorRamp = algorithcColorRamp;

            gradientFillSymbol.GradientAngle = 45;

            gradientFillSymbol.GradientPercentage = 0.9;

            gradientFillSymbol.Style = esriGradientFillStyle.esriGFSLinear;

            ICartographicLineSymbol cartoLine = new CartographicLineSymbol();

            cartoLine.Cap = esriLineCapStyle.esriLCSButt;

            cartoLine.Join = esriLineJoinStyle.esriLJSMitre;

            cartoLine.Color = getRGB(255, 0, 0);

            cartoLine.Width = 2;

            //Create the LineFillSymbo

            ILineFillSymbol lineFill = new LineFillSymbol();

            lineFill.Angle = 45;

            lineFill.Separation = 10;

            lineFill.Offset = 5;

            lineFill.LineSymbol = cartoLine;

            multiLayerFillSymbol.AddLayer(gradientFillSymbol);

            multiLayerFillSymbol.AddLayer(lineFill);

            object Missing = Type.Missing;

            IPolygon polygon = new PolygonClass();

            IPointCollection pointCollection = polygon as IPointCollection;

            IPoint point = new PointClass();

            point.PutCoords(5, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(5, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 10);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            point.PutCoords(10, 5);

            pointCollection.AddPoint(point, ref Missing, ref Missing);

            polygon.SimplifyPreserveFromTo();

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(multiLayerFillSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolygon(polygon as IGeometry);

            activeView.ScreenDisplay.FinishDrawing();

        }

四、TextSymbol对象

　　用于修饰文字元素，实现ITextSymbol，ISimpleTextSymbol，IFormattedTextSymbol接口。

　　ITextSymbol是定义文本字符对象的主要接口，通过IFontDisp接口来设置字体的大小、粗体、斜体等。

　　ISimpleTextSymbol

[转] Symbol对象

　　BezierTextPath对象可以让文字的路径按照贝塞尔曲线设置。

　　ITextPath接口提供用来计算每个字符文字路径的位置。

　　IFormattedTextSymbol接口用来设置背景对象、阴影等属性

        private void textSybmolToolStripMenuItem_Click(object sender, EventArgs e)

        {

            ITextSymbol textSymbol = new TextSymbolClass();

            System.Drawing.Font drawFont = new System.Drawing.Font("宋体", 16, FontStyle.Bold);

            stdole.IFontDisp fontDisp = (stdole.IFontDisp)(new stdole.StdFontClass());

            textSymbol.Font = fontDisp;

            textSymbol.Color = getRGB(0, 255, 0);

            textSymbol.Size = 20;

            IPolyline polyline = new PolylineClass();

            IPoint point = new PointClass();

            point.PutCoords(1, 1);

            polyline.FromPoint = point;

            point.PutCoords(10, 10);

            polyline.ToPoint = point;

            ITextPath textPath = new BezierTextPathClass();

            //创建简单标注

            ILineSymbol lineSymbol = new SimpleLineSymbolClass();

            lineSymbol.Color = getRGB(255, 0, 0);

            lineSymbol.Width = 5;

            ISimpleTextSymbol simpleTextSymbol = textSymbol as ISimpleTextSymbol;

            simpleTextSymbol.TextPath = textPath;

            object oLineSymbol = lineSymbol;

            object oTextSymbol = textSymbol;

            IActiveView activeView = this.axMapControl1.ActiveView;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(oLineSymbol as ISymbol);

            activeView.ScreenDisplay.DrawPolyline(polyline as IGeometry);

            activeView.ScreenDisplay.SetSymbol(oTextSymbol as ISymbol);

            activeView.ScreenDisplay.DrawText(polyline as IGeometry, "简单标注"); ;

            activeView.ScreenDisplay.FinishDrawing();

            //创建气泡标注（两中风格，一种是有锚点，一种是marker方式）

            //锚点方式

            ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();

            simpleFillSymbol.Color = getRGB(0, 255, 0);

            simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;

            IBalloonCallout balloonCallout = new BalloonCalloutClass();

            balloonCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle;

            balloonCallout.Symbol = simpleFillSymbol;

            balloonCallout.LeaderTolerance = 10;

            point.PutCoords(5, 5);

            balloonCallout.AnchorPoint = point;

            IGraphicsContainer graphicsContainer = activeView as IGraphicsContainer;

            IFormattedTextSymbol formattedTextSymbol = new TextSymbolClass();

            formattedTextSymbol.Color = getRGB(0, 0, 255);

            point.PutCoords(10, 5);

            ITextBackground textBackground = balloonCallout as ITextBackground;

            formattedTextSymbol.Background = textBackground;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(formattedTextSymbol as ISymbol);

            activeView.ScreenDisplay.DrawText(point as IGeometry, "气泡1");

            activeView.ScreenDisplay.FinishDrawing();

            //marker方式

            textSymbol = new TextSymbolClass();

            textSymbol.Color = getRGB(255, 0, 0);

            textSymbol.Angle = 0;

            textSymbol.RightToLeft = false;

            textSymbol.VerticalAlignment = esriTextVerticalAlignment.esriTVABaseline;

            textSymbol.HorizontalAlignment = esriTextHorizontalAlignment.esriTHAFull;

            IMarkerTextBackground markerTextBackground = new MarkerTextBackgroundClass();

            markerTextBackground.ScaleToFit = true;

            markerTextBackground.TextSymbol = textSymbol;

            IRgbColor rgbColor = new RgbColorClass();

            IPictureMarkerSymbol pictureMarkerSymbol = new PictureMarkerSymbolClass();

            //string fileName = @"E:\vs2005\第五章\lesson2\lesson2\data\qq.bmp";

            string path = Directory.GetCurrentDirectory();

            string fileName = path + @"\qq.bmp";

            pictureMarkerSymbol.CreateMarkerSymbolFromFile(esriIPictureType.esriIPictureBitmap, fileName);

            pictureMarkerSymbol.Angle = 0;

            pictureMarkerSymbol.BitmapTransparencyColor = rgbColor;

            pictureMarkerSymbol.Size = 20;

            pictureMarkerSymbol.XOffset = 0;

            pictureMarkerSymbol.YOffset = 0;

            markerTextBackground.Symbol = pictureMarkerSymbol as IMarkerSymbol;

            formattedTextSymbol = new TextSymbolClass();

            formattedTextSymbol.Color = getRGB(255, 0, 0);

            fontDisp.Size = 10;

            fontDisp.Bold = true;

            formattedTextSymbol.Font = fontDisp;

            point.PutCoords(15, 5);

            formattedTextSymbol.Background = markerTextBackground;

            activeView.ScreenDisplay.StartDrawing(activeView.ScreenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);

            activeView.ScreenDisplay.SetSymbol(formattedTextSymbol as ISymbol);

            activeView.ScreenDisplay.DrawText(point as IGeometry, "气泡2");

            activeView.ScreenDisplay.FinishDrawing();

        }

五、3DChartSymbol对象

　　是一个抽象类，有三个子类：BarChart（用来着色）、PieChart、StaekedChart。

　　它实现多个接口：IChartSymbol、IBarChartSymbol、IPieChartSymbol和IStackedSymbol等。

　　IChartSymbol接口主要用于计算一个ChartSymbol对象中的柱状和饼状部分的尺寸，其中Maximum值是创建3DChartSymbol对象后必须设置的一个属性，着色一般在一个要素图层上进行，因而可以从它的要素类中获得一系列的数值统计值。如果有三个数值参与着色，系统则必须对三个数值进行大小比较，找出最大的那个赋值给Maximum。Value属性用数组来设置柱状高度或饼状宽度。可以用ISymbolArray来管理多个参与着色的符号对象。

　　BarChartSymbol对象实现IBarChartSymbol接口，用不同类型的柱子代表一个要素中的不同属性，高度取决于属性值得大小。

　　PieChartSymbol对象实现IPieChartSymbol接口，用一个饼图来显示一个要素中的不同属性，不同属性按照他们的数值大小，占有不同比例的扇形区域。

　　StackedSymbol对象实现IStackedSymbol接口，堆积的柱子表示一个要素中的不同属性，Fixed属性为true时，每个柱子的高度都一样，false时，柱子尺寸根据要素类的属性来计算得出。

秒客网

[转] Symbol对象

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