public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
if (Button == 2)
{
return;
}
INewLineFeedback pLineFeed;
if (m_PT1 == null)
{
m_PT1 = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
m_PT1 = GIS.GraphicEdit.SnapSetting.getSnapPoint(m_PT1);
m_pFeedback = new NewLineFeedbackClass();
pLineFeed = (INewLineFeedback)m_pFeedback;
pLineFeed.Start(m_PT1);
if (m_pFeedback != null)
{
m_pFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
}
}
else if (m_PT2 == null)
{
m_PT2 = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
m_PT2 = GIS.GraphicEdit.SnapSetting.getSnapPoint(m_PT2);
pLineFeed = (INewLineFeedback)m_pFeedback;
pLineFeed.AddPoint(m_PT2);
}
else if (m_PT3 == null)
{
m_PT3 = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
m_PT3 = GIS.GraphicEdit.SnapSetting.getSnapPoint(m_PT3);
pLineFeed = (INewLineFeedback)m_pFeedback;
pLineFeed.AddPoint(m_PT3);
}
else if (m_PT4 == null)
{
m_PT4 = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
m_PT4 = GIS.GraphicEdit.SnapSetting.getSnapPoint(m_PT4);
pLineFeed = (INewLineFeedback)m_pFeedback;
pLineFeed.AddPoint(m_PT4);
pLineFeed.Stop();
IBezierCurveGEN bezier = CreateBazerCurve();
DrawCircleByCenterAndRadius(m_pCurrentLayer, bezier, m_hookHelper.ActiveView.ScreenDisplay);
m_PT1 = null;
m_PT2 = null;
m_PT3 = null;
m_PT4 = null;
m_pFeedback = null;
}
}
private void DrawCircleByCenterAndRadius(ILayer pLayer, IBezierCurveGEN pCircularArc, IScreenDisplay pScreenDisplay)
{
object o = Type.Missing;
if (pLayer != null)
{
ISegmentCollection pSegmentCollection = null;
pSegmentCollection = new PathClass();
if (pLayer is IFeatureLayer)
{
IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
if (pFeatureClass != null)
{
ISegment pSegment = pCircularArc as ISegment;
pSegmentCollection.AddSegment(pSegment, ref o, ref o);
IGeometryCollection pPolyline = new PolylineClass();
//通过IGeometryCollection为Polyline对象添加Path对象
pPolyline.AddGeometry(pSegmentCollection as IGeometry, ref o, ref o);
m_pMap.ClearSelection();
IFeature pCircleFeature = pFeatureClass.CreateFeature();
pCircleFeature.Shape = pPolyline as PolylineClass;
pCircleFeature.Store();
m_pMap.SelectFeature(m_pCurrentLayer, pCircleFeature);
IActiveView pActiveView = (IActiveView)m_pMap;
m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, null);
//局部刷新
IInvalidArea pInvalidArea = new InvalidAreaClass();
pInvalidArea.Add(pPolyline);
pInvalidArea.Display = m_hookHelper.ActiveView.ScreenDisplay;
pInvalidArea.Invalidate((short)esriScreenCache.esriAllScreenCaches);
}
}
}
}
private void DrawCircleByCenterAndRadius(ILayer pLayer, IBezierCurveGEN pCircularArc, IScreenDisplay pScreenDisplay)
{
object o = Type.Missing;
if (pLayer != null)
{
ISegmentCollection pSegmentCollection = null;
pSegmentCollection = new PathClass();
if (pLayer is IFeatureLayer)
{
IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
if (pFeatureClass != null)
{
ISegment pSegment = pCircularArc as ISegment;
pSegmentCollection.AddSegment(pSegment, ref o, ref o);
IGeometryCollection pPolyline = new PolylineClass();
//ͨ��IGeometryCollectionΪPolyline�������Path����
pPolyline.AddGeometry(pSegmentCollection as IGeometry, ref o, ref o);
m_pMap.ClearSelection();
IFeature pCircleFeature = pFeatureClass.CreateFeature();
pCircleFeature.Shape = pPolyline as PolylineClass;
pCircleFeature.Store();
m_pMap.SelectFeature(m_pCurrentLayer, pCircleFeature);
IActiveView pActiveView = (IActiveView)m_pMap;
m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, null);
//�ֲ�ˢ��
IInvalidArea pInvalidArea = new InvalidAreaClass();
pInvalidArea.Add(pPolyline);
pInvalidArea.Display = m_hookHelper.ActiveView.ScreenDisplay;
pInvalidArea.Invalidate((short)esriScreenCache.esriAllScreenCaches);
}
}
}
}
