public override void OnMouseDown(int Button, int int_1, int int_2, int int_3)
{
if (Button == 1)
{
IActiveView activeView = (IActiveView)this._context.FocusMap;
IPoint point = activeView.ScreenDisplay.DisplayTransformation.ToMapPoint(int_2, int_3);
if (this.idisplayFeedback_0 == null)
{
this.idisplayFeedback_0 = new NewCircleFeedback();
this.idisplayFeedback_0.Display = activeView.ScreenDisplay;
(this.idisplayFeedback_0 as INewCircleFeedback).Start(point);
}
else
{
try
{
ICircularArc circularArc = (this.idisplayFeedback_0 as INewCircleFeedback).Stop();
this.idisplayFeedback_0 = null;
ISegmentCollection segmentCollection = new Polygon() as ISegmentCollection;
object value = Missing.Value;
segmentCollection.AddSegment(circularArc as ISegment, ref value, ref value);
(segmentCollection as IGeometry).SpatialReference = this._context.FocusMap.SpatialReference;
this._context.FocusMap.ClipGeometry = (segmentCollection as IGeometry);
(this._context.FocusMap as IActiveView).Extent = (segmentCollection as IGeometry).Envelope;
this._context.ActiveView.Refresh();
}
catch (Exception)
{
}
}
}
}
private void method_9(IActiveView pView, IPoint point, double num, bool flag, IRgbColor color)
{
this.method_8(point, num, flag);
ISegmentCollection segmentCollection = new Polygon() as ISegmentCollection;
ICircularArc circularArc = this.method_8(point, num, flag);
object missing = Type.Missing;
segmentCollection.AddSegment(circularArc as ISegment, ref missing, ref missing);
ICircleElement circleElement = new CircleElement() as ICircleElement;
IElement element = (IElement)circleElement;
element.Geometry = (segmentCollection as IGeometry);
IFillShapeElement fillShapeElement = (IFillShapeElement)circleElement;
ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbol();
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbol();
simpleLineSymbol.Color = (color);
simpleLineSymbol.Width = (2.0);
simpleLineSymbol.Style = (0);
simpleFillSymbol.Color = (color);
simpleFillSymbol.Style = (esriSimpleFillStyle)(1);
simpleFillSymbol.Outline = (simpleLineSymbol);
fillShapeElement.Symbol = (simpleFillSymbol);
IGraphicsContainer graphicsContainer = (IGraphicsContainer)pView;
graphicsContainer.AddElement((IElement)circleElement, 0);
}
/// <summary>
/// 转换椭圆线为椭圆面几何形状
/// </summary>
/// <param name="geometry">ESRI几何形状接口</param>
/// <returns>椭圆面几何形状的ESRI几何形状接口</returns>
public static IGeometry ConvertEllipticArcToPolygon(IGeometry geometry)
{
if ((IsValidGeometry(geometry)) && (geometry is ISegment))
{
ISegmentCollection segmentCollecttion = new Polygon() as ISegmentCollection;
object Missing = Type.Missing;
segmentCollecttion.AddSegment((ISegment)geometry, ref Missing, ref Missing);
return((IGeometry)segmentCollecttion);
}
else
{
return(null);
}
}
/// <summary>
/// 生成椭圆
/// </summary>
public IEllipticArc GenerateEllipticArc(IPoint pCenterPoint, double rotationAngle, double Descripe, double Seismic)
{
Core.DAL.DisaParameter disapara = new DAL.DisaParameter();
List <Core.Model.DisaParameter> listdisapara = new List <Model.DisaParameter>();
listdisapara = disapara.GetList();//读取灾区范围参数
double MajorAxis = 0;
double MinorAxis = 0;
for (int i = 0; i < listdisapara.Count; i++)
{
if (listdisapara[i].isMajorAxis)
{
//根据地震等级和烈度计算出长短轴
MajorAxis = System.Math.Pow(10, (listdisapara[i].A + listdisapara[i].B * Convert.ToDouble(Descripe) - Seismic) / listdisapara[i].C) - listdisapara[i].D;//长半轴
}
else
{
MinorAxis = System.Math.Pow(10, (listdisapara[i].A + listdisapara[i].B * Convert.ToDouble(Descripe) - Seismic) / listdisapara[i].C) - listdisapara[i].D;//短半轴
}
}
if (MajorAxis <= 0 || MinorAxis <= 0)
{
MessageBox.Show("输入烈度过大！");
return(null);
}
double ratio;
if (MajorAxis > MinorAxis)
{
ratio = MinorAxis / MajorAxis;
}
else
{
ratio = MajorAxis / MinorAxis;
}
IEllipticArc ellipticArc = new EllipticArcClass();
//ellipticArc.PutCoordsByAngle(基准，中心点，起点角度，椭圆圆心角，旋转角度，长轴，长短轴之比)；轴长单位为米，角度单位为弧度
ellipticArc.PutCoordsByAngle(false, pCenterPoint, 0, 2 * Math.PI, rotationAngle * Math.PI / 180, (double)MajorAxis / Core.Generic.SysEnviriment.LengthPerRad * 2, ratio);
ISegment segment = ellipticArc as ISegment;
ISegmentCollection polygon = new Polygon() as ISegmentCollection;
object Missing = Type.Missing;
polygon.AddSegment(segment, ref Missing, ref Missing);
//图上显示
Color color = Color.Red;
ISymbol symbol = CreateSimpleFillSymbol(color, 1, esriSimpleFillStyle.esriSFSHollow);
AddElement(polygon as IGeometry, symbol, "result");
IEnvelope envelope;
envelope = ellipticArc.Envelope;
if (!envelope.IsEmpty)
{
envelope.Expand(1, 1, true);
}
mapControl.Extent = envelope;
this.mapControl.Refresh();
return(ellipticArc);
}
private void drawCircleGraphic(double Size)
{
IMxDocument pMxDoc = m_pDoc;
IActiveView pActiveView;
IScreenDisplay pScreenDisplay;
IEnvelope pEnv;
IPoint pCenterPoint;
IDisplayTransformation pTransform;
pActiveView = pMxDoc.FocusMap as IActiveView;
pScreenDisplay = pActiveView.ScreenDisplay;
pTransform = pScreenDisplay.DisplayTransformation;
pEnv = pTransform.FittedBounds;
pCenterPoint = new Point();
pCenterPoint.PutCoords((pEnv.XMax + pEnv.XMin) / 2, (pEnv.YMax + pEnv.YMin) / 2);
IConstructCircularArc pCircle = new CircularArc() as IConstructCircularArc;
ISegmentCollection pPolygon = new Polygon() as ISegmentCollection;
Size *= 10000;
Size = Math.Sqrt(Size / 3.1416);
pCircle.ConstructCircle(pCenterPoint, Size, true);
pPolygon.AddSegment(pCircle as ISegment);
IPolygon pFinalPolygon;
pFinalPolygon = pPolygon as IPolygon;
pFinalPolygon.Close();
IRgbColor pLineColor = new RgbColor();
pLineColor.Red = 255; // A CHANGER!!!
addGraphicToMap(pMxDoc.FocusMap, pFinalPolygon, pLineColor, pLineColor);
}