private static IEnvelope GetExtents()
{
IScreenDisplay screenDisplay = ((IActiveView)ArcMap.Document.ActiveView.FocusMap).ScreenDisplay;
IRubberBand rubberEnv = new RubberEnvelope();
var envelope = rubberEnv.TrackNew(screenDisplay, null) as IEnvelope;
return envelope;
//if (envelope.IsEmpty)
// return;
}
private IGeometry GetUserEnv()
{
IRubberBand rubberEnv = new RubberEnvelope();
return rubberEnv.TrackNew((_app.Document as IMxDocument).ActiveView.ScreenDisplay, null);
}
/// <summary>
/// 屏幕上绘画几何形状
/// </summary>
/// <param name="screenDisplay">ESRI屏幕显示接口</param>
/// <param name="geomType">几何形状类型的枚举类</param>
/// <returns>ESRI几何形状接口</returns>
public static IGeometry ScreenTrackGeometry(IScreenDisplay screenDisplay, DsGeometryType geomType)
{
IGeometry trackGeom = null;
if (screenDisplay != null)
{
IRubberBand rubberBand = null;
switch (geomType)
{
case DsGeometryType.dsGTPoint:
rubberBand = new RubberPoint();
break;
case DsGeometryType.dsGTLine:
rubberBand = new RubberLine();
break;
case DsGeometryType.dsGTPolyline:
rubberBand = new RubberLine();
break;
case DsGeometryType.dsGTRectangle:
rubberBand = new RubberEnvelope();
break;
case DsGeometryType.dsGTCircle:
rubberBand = new RubberCircle();
break;
case DsGeometryType.dsGTEllipse:
rubberBand = new RubberEnvelope();
break;
case DsGeometryType.dsGTPolygon:
rubberBand = new RubberPolygon();
break;
case DsGeometryType.dsGTRectangularPolygon:
rubberBand = new RubberRectangularPolygon();
break;
default:
break;
}
if (rubberBand != null)
{
trackGeom = rubberBand.TrackNew(screenDisplay, null);
}
if (geomType == DsGeometryType.dsGTEllipse)
{
trackGeom = ConvertEnvelopeToEllipticArc(trackGeom);
}
else if ((geomType == DsGeometryType.dsGTLine) ||
(geomType == DsGeometryType.dsGTPolyline) ||
(geomType == DsGeometryType.dsGTPolygon))
{
if (trackGeom is ITopologicalOperator)
{
(trackGeom as ITopologicalOperator).Simplify();
}
}
}
return(trackGeom);
}
private IGeometry GetUserEnv()
{
IRubberBand rubberEnv = new RubberEnvelope();
return(rubberEnv.TrackNew((_app.Document as IMxDocument).ActiveView.ScreenDisplay, null));
}
private void MapIndex_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
IEnvelope pEnv;
IActiveView pActView;
IRubberBand pRubberBand;
double dWidth;
double dHeight;
double dXmin;
double dYmin;
double dXmax;
double dYmax;
if (m_strCommand == "Fence")
{
pRubberBand = new RubberEnvelope();
IActiveView pActiveViewFrmMain;
pActiveViewFrmMain = m_FrmActive.mapMain.ActiveView;
pActView = MapIndex.ActiveView;
pEnv = MapIndex.TrackRectangle();
if (pEnv.IsEmpty)
{
IPoint pPt;
pPt = pActView.ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y);
pEnv = pActiveViewFrmMain.Extent;
pEnv.CenterAt(pPt);
}
pActiveViewFrmMain.Extent = pEnv;
pActiveViewFrmMain.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, pActiveViewFrmMain.Extent);
pActView.Refresh();
}
else if (m_strCommand == "ZoomToEnvlope")
{
IPoint PtDown;
PtDown = new ESRI.ArcGIS.Geometry.Point();
PtDown = MapIndex.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y);
PtStart = PtDown;
EyeMove = new EnvelopeClass();
EyeMove.PutCoords(EyeRect.XMin, EyeRect.YMin, EyeRect.XMax, EyeRect.YMax);
}
else if (m_strCommand == "ZoomIn")
{
MapIndex.Extent = MapIndex.TrackRectangle();
}
else if (m_strCommand == "ZoomOut")
{
pRubberBand = new RubberEnvelope();
pActView = MapIndex.ActiveView; //pActView为当前窗口
pEnv = pRubberBand.TrackNew(pActView.ScreenDisplay, null).Envelope; //pEnv为拉框范围
if (pEnv.IsEmpty)
{
return;
}
if (pEnv.Width == 0 || pEnv.Height == 0)
{
return;
}
dWidth = pActView.Extent.Width * (pActView.Extent.Width / pEnv.Width);
dHeight = pActView.Extent.Height * (pActView.Extent.Height / pEnv.Height);
dXmin = pActView.Extent.XMin - ((pEnv.XMin - pActView.Extent.XMin) * (pActView.Extent.Width / pEnv.Width));
dYmin = pActView.Extent.YMin - ((pEnv.YMin - pActView.Extent.YMin) * (pActView.Extent.Height / pEnv.Height));
dXmax = (pActView.Extent.XMin - ((pEnv.XMin - pActView.Extent.XMin) * (pActView.Extent.Width / pEnv.Width))) + dWidth;
dYmax = (pActView.Extent.YMin - ((pEnv.YMin - pActView.Extent.YMin) * (pActView.Extent.Height / pEnv.Height))) + dHeight;
pEnv.PutCoords(dXmin, dYmin, dXmax, dYmax);
pActView.Extent = pEnv;
pActView.Refresh();
}
else if (m_strCommand == "Pan")
{
this.MapIndex.Pan();
}
}