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
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。
时间： 2024-10-08 07:35:21