public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
IPoint pt = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
pt = GIS.GraphicEdit.SnapSetting.getSnapPoint(pt);
if (m_newBezierCurveFeedback == null)
{
m_newBezierCurveFeedback = new NewBezierCurveFeedbackClass();
m_newBezierCurveFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
m_newBezierCurveFeedback.Start(pt);
fPoint = pt;
}
else
{
m_newBezierCurveFeedback.AddPoint(pt);
}
}
//更新m_pBezierCurveFeed
public void UpdataBezierCurveFeed(IMapControl2 MapControl, ref IArray pUndoArray)
{
if (m_pBezierCurveFeed != null)
{
m_pBezierCurveFeed.Stop();
}
m_pActiveView.PartialRefresh(esriViewDrawPhase.esriViewForeground, null, null);
m_pActiveView.ScreenDisplay.UpdateWindow();
m_pBezierCurveFeed.Start((IPoint)m_pUndoArray.get_Element(0));
CommonFunction.DrawPointSMSSquareSymbol(MapControl, (IPoint)pUndoArray.get_Element(0));
for (int i = 0; i < pUndoArray.Count; i++)
{
m_pBezierCurveFeed.AddPoint((IPoint)pUndoArray.get_Element(i));
CommonFunction.DrawPointSMSSquareSymbol(MapControl, (IPoint)pUndoArray.get_Element(i));
}
}
private void EndDrawBezierCurve()
{
IGeometry pGeom = null;
IPolyline pPolyline;
IPolygon pPolygon;
IPointCollection pPointCollection;
if (m_bInUse)
{
switch (((IFeatureLayer)m_CurrentLayer).FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPolyline:
m_pBezierCurveFeed = (INewBezierCurveFeedback)m_pFeedback;
m_pFeedback.MoveTo((IPoint)m_pUndoArray.get_Element(m_pUndoArray.Count - 1));;
pPolyline = m_pBezierCurveFeed.Stop();
((ITopologicalOperator)pPolyline).Simplify();
pPointCollection = (IPointCollection)pPolyline;
if (pPointCollection.PointCount < 2)
{
MessageBox.Show("线上必须有两个点!");
}
else
{
pGeom = (IGeometry)pPointCollection;
}
break;
case esriGeometryType.esriGeometryPolygon:
m_pBezierCurveFeed = (INewBezierCurveFeedback)m_pFeedback;
m_pBezierCurveFeed.AddPoint((IPoint)m_pUndoArray.get_Element(0));
pPolyline = m_pBezierCurveFeed.Stop();
pPolygon = CommonFunction.PolylineToPolygon((IPolyline)pPolyline);
((ITopologicalOperator)pPolygon).Simplify();
pPointCollection = (IPointCollection)pPolygon;
pGeom = (IGeometry)pPointCollection;
if (pPointCollection.PointCount < 3)
{
MessageBox.Show("面上必须有三个点!");
}
else
{
pGeom = (IGeometry)pPointCollection;
}
break;
default:
break;
} //end switch
m_pEnvelope = pGeom.Envelope;
if (m_pEnvelope != null && !m_pEnvelope.IsEmpty)
{
m_pEnvelope.Expand(10, 10, false);
}
;
CommonFunction.CreateFeature(m_App.Workbench, pGeom, m_FocusMap, m_CurrentLayer);
}
Reset(); //复位
m_bInUse = false;
}
private void DrawBezierCurveMouseDown(IPoint pPoint)
{
if (!m_bInUse) //如果命令没有使用
{
m_bInUse = true;
m_pUndoArray.Add(pPoint);
CommonFunction.DrawPointSMSSquareSymbol(m_MapControl, pPoint);
m_pFeedback = new NewBezierCurveFeedbackClass();
m_pBezierCurveFeed = (INewBezierCurveFeedback)m_pFeedback;
m_pBezierCurveFeed.Start(pPoint);
if (m_pFeedback != null)
{
m_pFeedback.Display = m_pActiveView.ScreenDisplay;
}
if (((IFeatureLayer)m_CurrentLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)
{
//若当前图层是面层，则显示回馈开始点到鼠标点的线段
m_pLastFeedback = new NewLineFeedbackClass();
m_pLastLineFeed = (INewLineFeedback)m_pLastFeedback;
m_pLastLineFeed.Start(pPoint);
if (m_pLastFeedback != null)
{
m_pLastFeedback.Display = m_pActiveView.ScreenDisplay;
}
}
}
else //若果命令正使用中
{
m_pBezierCurveFeed = (INewBezierCurveFeedback)m_pFeedback;
m_pBezierCurveFeed.AddPoint(pPoint);
IPoint tempPoint = new PointClass();
tempPoint.X = pPoint.X;
tempPoint.Y = pPoint.Y;
m_pUndoArray.Add(tempPoint);
UpdataBezierCurveFeed(m_MapControl, ref m_pUndoArray); //刷新屏幕
if ((m_bFixLength == true) && (m_bFixDirection == false)) //可以给定一个长度值
{
m_bFixLength = false;
}
else if ((m_bFixLength == false) && (m_bFixDirection == true)) //可以给定一个固定方向值
{
m_bFixDirection = false;
}
else if ((m_bFixLength == true) && (m_bFixDirection == true))
{
m_bFixLength = false;
m_bFixDirection = false;
}
if (m_bFixLeftCorner)
{
m_bFixLeftCorner = false;
}
}
m_pLastPoint = pPoint;
if (m_bkeyCodeS == true) //直角结束
{
m_bkeyCodeS = false;
if (((IFeatureLayer)m_CurrentLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline)
{
m_pLastLineFeed.Stop();
}
}
m_pSegment = null; //清空捕捉到的片断
}
