//构造偏转角度法
private void button5_Click(object sender, EventArgs e)
{
delFeature("point");
IPoint fromPoint = new PointClass();
fromPoint.PutCoords(0, 0);
IPoint toPoint = new PointClass();
toPoint.PutCoords(1, 1);
ILine line = new LineClass();
line.PutCoords(fromPoint, toPoint);
double distance = 1.4142135623731;
double angle = Math.PI / 4;
IConstructPoint constructionPoint = new PointClass();
constructionPoint.ConstructDeflection(line, distance, angle);
IPoint point = constructionPoint as IPoint;
addFeature("point", fromPoint);
addFeature("point", toPoint);
addFeature("point", point);
axMapControl1.Refresh();
}
public override void OnMouseDown(int button, int shift, int x, int y)
{
if (button != 1)
{
return;
}
if (_context.Config.EngineSnapEnvironment.SnapToleranceUnits ==
esriEngineSnapToleranceUnits.esriEngineSnapTolerancePixels)
{
_tolerance = ArcGIS.Common.Helpers.CommonHelper.ConvertPixelsToMapUnits(_context.ActiveView,
_tolerance);
}
this.SelectByClick(x, y);
IEnumFeature enumFeature = _context.FocusMap.FeatureSelection as IEnumFeature;
IFeature feature = enumFeature.Next();
if (feature.Shape.GeometryType == esriGeometryType.esriGeometryPoint)
{
_pointFeature = feature;
}
if (feature.Shape.GeometryType == esriGeometryType.esriGeometryPolyline)
{
_lineFeature = feature;
}
if (_pointFeature == null || _lineFeature == null)
{
return;
}
this.SelectByShape(_pointFeature.Shape);
enumFeature = _context.FocusMap.FeatureSelection as IEnumFeature;
enumFeature.Reset();
List <IFeature> linkFeatures = new List <IFeature>();
IFeature lineFeature;
while ((lineFeature = enumFeature.Next()) != null)
{
IPolyline polyline = lineFeature.Shape as IPolyline;
if (polyline == null)
{
continue;
}
linkFeatures.Add(lineFeature);
}
if (linkFeatures.Count <= 0)
{
return;
}
_linkFeature = linkFeatures[0];
if (_linkFeature == null || _linkFeature.Shape.GeometryType != esriGeometryType.esriGeometryPolyline)
{
return;
}
_context.FocusMap.SelectFeature(_pointFeatureLayer, _pointFeature);
_context.FocusMap.SelectFeature(_lineFeatureLayer, _lineFeature);
_context.FocusMap.SelectFeature(_lineFeatureLayer, _linkFeature);
try
{
IPoint datumPoint = GeometryHelper.GetIntersectPoint(_lineFeature.Shape as IPolyline,
_linkFeature.Shape as IPolyline);
double angle1 = 0.0, angle2 = 0.0, angle3 = 0.0, angle4 = 0.0;
ILine line1 = new LineClass();
line1.PutCoords(datumPoint, GeometryHelper.GetAnotherPoint(_lineFeature.Shape as IPolyline, datumPoint));
angle1 = line1.Angle;
ILine line2 = new LineClass();
line2.PutCoords(datumPoint, _pointFeature.Shape as IPoint);
angle2 = line2.Angle;
angle3 = angle2 - angle1;
if ((angle3 > 0 && angle3 < Math.PI) || angle3 < (0 - Math.PI))
{
angle4 = Math.PI / 2;
}
else
{
angle4 = Math.PI * 1.5;
}
if (MessageBox.Show($@"要素：{_linkFeature.OID}，将旋转{angle4:0.0000}，是否继续？", @"提示", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
IConstructPoint constructPoint = new PointClass();
constructPoint.ConstructDeflection(line1, line2.Length, angle4);
IPoint point = constructPoint as IPoint;
CommonHelper.MovePointWithLine(_pointFeature, new List <IFeature>()
{
_linkFeature
}, point, _tolerance);
_context.ActiveView.Refresh();
_linkFeature = null;
_lineFeature = null;
_pointFeature = null;
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
