private void finishPart()
{
if (CurrentEdit < 0 || CurrentEdit > AllLayer.Count())
{
return;
}
List <WEPoint> tem = new List <WEPoint>();
if (NewPoints.Count() != 0)
{
switch (AllLayer[CurrentEdit].FeatureType)
{
case FeatureType.WEMultiPoint:
case FeatureType.WEEntityPoint:
break;
case FeatureType.WEEntityPolyline:
case FeatureType.WEMultiPolyline:
WEMultiPolyline temm = (WEMultiPolyline)(EditFeature.Geometries);
WEPolyline temmm = (WEPolyline)temm.Polylines[temm.Polylines.Count() - 1];
//tem.AddRange(temmm.Points);
foreach (var i in NewPoints)
{
tem.Add(WEMapTools.ToMapPoint(i));
}
temmm.Points = (WEPoint[])tem.ToArray();
temm.DeletePolyline(temm.Polylines.Count() - 1);
temm.Add(temmm);
temm.Add(new WEPolyline());
EditFeature.Geometries = temm;
NewPoints.Clear();
break;
case FeatureType.WEEntityPolygon:
case FeatureType.WEMultiPolygon:
WEMultiPolygon temm3 = (WEMultiPolygon)(EditFeature.Geometries);
WEPolygon temmm3 = (WEPolygon)temm3.Polygons[temm3.Polygons.Count() - 1];
//tem.AddRange(temmm3.Points);
foreach (var i in NewPoints)
{
tem.Add(WEMapTools.ToMapPoint(i));
}
temmm3.Points = (WEPoint[])tem.ToArray();
temm3.DeletePolygon(temm3.Polygons.Count() - 1);
temm3.Add(temmm3);
temm3.Add(new WEPolygon());
EditFeature.Geometries = temm3;
NewPoints.Clear();
break;
default:
throw new Exception("不能识别的图层类型");
}
}
else
{
System.Media.SystemSounds.Beep.Play();
}
}
/// <summary>
/// 判断复合多边形是否部分或者完全位于矩形盒内
/// </summary>
/// <returns></returns>
public static bool IsMultiPolygonPartiallyWithinBox(WEMultiPolygon multiPolygon, WERectangle box)
{
WERectangle multipolygonBox = multiPolygon.MBR; //矩形盒不相交
if (!IsTwoBoxesIntersect(multipolygonBox, box))
{
return(false);
}
int sPolygonCount = multiPolygon.Polygons.Count();
for (int j = 0; j < sPolygonCount; j++) //遍历每个简单多边形判断是否有顶点位于矩形盒内
{
WEPolygon thisPolygon = (WEPolygon)multiPolygon.GetPolygon(j);
int sPointCount = thisPolygon.PointCount;
for (int i = 0; i < sPointCount; i++)
{
if (IsPointInBox(thisPolygon.Points[i], box))
{
return(true);
}
}
}
WEPoint LeftTop = new WEPoint(box.MinX, box.MaxY);
WEPoint LeftBottom = new WEPoint(box.MinX, box.MinY);
WEPoint RightTop = new WEPoint(box.MaxX, box.MaxY);
WEPoint RightBottom = new WEPoint(box.MaxX, box.MinY);
//判断矩形盒是否有顶点位于复合多边形内
if (IsPointInMultiPolygon(LeftTop, multiPolygon) || IsPointInMultiPolygon(LeftBottom, multiPolygon) ||
IsPointInMultiPolygon(RightBottom, multiPolygon) || IsPointInMultiPolygon(RightTop, multiPolygon))
{
return(true);
}
for (int j = 0; j < sPolygonCount; j++) //遍历每个简单多边形判断是否有边与矩形盒相交
{
WEPolygon thisPolygon = (WEPolygon)multiPolygon.GetPolygon(j);
int sPointCount = thisPolygon.PointCount;
WEPoint startPoint, endPoint;
for (int i = 0; i < sPointCount - 1; i++)
{
startPoint = thisPolygon.Points[i];
endPoint = thisPolygon.Points[i + 1];
if (IsSegmentIntersectsBox(startPoint, endPoint, box))
{
return(true);
}
}
startPoint = thisPolygon.Points[sPointCount - 1];
endPoint = thisPolygon.Points[0];
if (IsSegmentIntersectsBox(startPoint, endPoint, box))
{
return(true);
}
}
return(false);
}
/// <summary>
/// 判断点是否在简单多边形内
/// </summary>
/// <param name="point"></param>
/// <param name="polygon"></param>
/// <returns></returns>
public static bool IsPointInPolygon(WEPoint point, WEPolygon polygon, double tolerance = 0.1)
{
WERectangle box = polygon.MBR;
if (!IsPointInBox(point, box))
{
return(false);
}
int sPointCount = polygon.PointCount;
int sIntersectionCount = 0; //射线与边的交点数
WEPoint startPoint, endPoint; //线段起点、终点
for (int i = 0; i < sPointCount - 1; i++)
{
startPoint = polygon.Points[i];
endPoint = polygon.Points[i + 1];
if (IsRayIntersectsSegment(point, startPoint, endPoint))
{
sIntersectionCount++;
}
}
startPoint = polygon.Points[sPointCount - 1];
endPoint = polygon.Points[0];
if (IsRayIntersectsSegment(point, startPoint, endPoint)) //最后一条边
{
sIntersectionCount++;
}
if (sIntersectionCount % 2 == 1) //奇数个交点
{
return(true);
}
if (tolerance > 0)
{
//对每条边判断点是否在一定容限内位于边上
for (int i = 0; i < sPointCount - 1; i++)
{
startPoint = polygon.Points[i];
endPoint = polygon.Points[i + 1];
if (GetDistanceFromPointToSegment(point, startPoint, endPoint) <= Tolerance)
{
return(true);
}
}
startPoint = polygon.Points[sPointCount - 1];
endPoint = polygon.Points[0];
if (GetDistanceFromPointToSegment(point, startPoint, endPoint) < Tolerance)
{
return(true);
}
}
return(false);
}
/// <summary>
/// 判断简单多边形是否部分或者完全位于矩形盒内
/// </summary>
/// <returns></returns>
public static bool IsPolygonPartiallyWithinBox(WEPolygon polygon, WERectangle box)
{
WERectangle polygonBox = polygon.MBR;
if (!IsTwoBoxesIntersect(polygonBox, box)) //矩形盒不相交
{
return(false);
}
int sPointCount = polygon.PointCount;
for (int i = 0; i < sPointCount; i++) //多边形是否有顶点位于矩形盒内
{
if (IsPointInBox(polygon.Points[i], box))
{
return(true);
}
}
WEPoint LeftTop = new WEPoint(box.MinX, box.MaxY);
WEPoint LeftBottom = new WEPoint(box.MinX, box.MinY);
WEPoint RightTop = new WEPoint(box.MaxX, box.MaxY);
WEPoint RightBottom = new WEPoint(box.MaxX, box.MinY);
if (IsPointInPolygon(LeftTop, polygon) || IsPointInPolygon(LeftBottom, polygon) ||
IsPointInPolygon(RightTop, polygon) || IsPointInPolygon(RightBottom, polygon)) //矩形盒是否有顶点位于多边形内
{
return(true);
}
//简单多边形与矩形盒的边是否有交点
WEPoint startPoint, endPoint;
for (int i = 0; i < sPointCount - 1; i++)
{
startPoint = polygon.Points[i];
endPoint = polygon.Points[i + 1];
if (IsSegmentIntersectsBox(startPoint, endPoint, box))
{
return(true);
}
}
startPoint = polygon.Points[sPointCount - 1]; //最后一条边
endPoint = polygon.Points[0];
if (IsSegmentIntersectsBox(startPoint, endPoint, box))
{
return(true);
}
return(false);
}
/// <summary>
/// 判断点是否在复合多边形内
/// </summary>
/// <param name="point"></param>
/// <param name="multiPolygon"></param>
/// <returns></returns>
public static bool IsPointInMultiPolygon(WEPoint point, WEMultiPolygon multiPolygon)
{
WERectangle box = multiPolygon.MBR;
if (!IsPointInBox(point, box))
{
return(false);
}
int sPolygonCount = multiPolygon.Polygons.Count();
int sIntersectionCount = 0; //射线与边的交点数
for (int j = 0; j < sPolygonCount; j++) //遍历每个简单多边形求射线交点个数
{
WEPolygon thisPolygon = (WEPolygon)multiPolygon.GetPolygon(j);
if (thisPolygon.PointCount < 3)
{
continue;
}
int sPointCount = thisPolygon.PointCount;
WEPoint startPoint, endPoint; //线段起点、终点
for (int i = 0; i < sPointCount - 1; i++)
{
startPoint = thisPolygon.Points[i];
endPoint = thisPolygon.Points[i + 1];
if (IsRayIntersectsSegment(point, startPoint, endPoint))
{
sIntersectionCount++;
}
}
startPoint = thisPolygon.Points[sPointCount - 1];
endPoint = thisPolygon.Points[0];
if (IsRayIntersectsSegment(point, startPoint, endPoint)) //最后一条边
{
sIntersectionCount++;
}
}
if (sIntersectionCount % 2 == 1) //奇数个交点
{
return(true);
}
return(false);
}
//鼠标移动
private void WEMapControl_MouseMove(object sender, MouseEventArgs e)
{
if (WEMouseMove != null)
{
WEMouseMove(this, e.Location);
}
switch (MapOpStyle)
{
case 0:
break;
case 1: //放大
if (e.Button == MouseButtons.Left)
{
Refresh();
Graphics g = Graphics.FromHwnd(this.Handle);
Pen sBoxPen = new Pen(mcSelectingBoxColor, mcSelectingBoxWidth);
float sMinX = Math.Min(mStartPoint.X, e.Location.X);
float sMinY = Math.Min(mStartPoint.Y, e.Location.Y);
float sMaxX = Math.Max(mStartPoint.X, e.Location.X);
float sMaxY = Math.Max(mStartPoint.Y, e.Location.Y);
g.DrawRectangle(sBoxPen, sMinX, sMinY, sMaxX - sMinX, sMaxY - sMinY);
g.Dispose();
}
break;
case 2: //缩小
if (e.Button == MouseButtons.Left)
{
Refresh();
Graphics g = Graphics.FromHwnd(this.Handle);
Pen sBoxPen = new Pen(mcSelectingBoxColor, mcSelectingBoxWidth);
float sMinX = Math.Min(mStartPoint.X, e.Location.X);
float sMinY = Math.Min(mStartPoint.Y, e.Location.Y);
float sMaxX = Math.Max(mStartPoint.X, e.Location.X);
float sMaxY = Math.Max(mStartPoint.Y, e.Location.Y);
g.DrawRectangle(sBoxPen, sMinX, sMinY, sMaxX - sMinX, sMaxY - sMinY);
g.Dispose();
}
break;
case 3: //漫游
if (e.Button == MouseButtons.Left)
{
//PointF sPreMouseLocation = new PointF(mStartPoint.X, mStartPoint.Y);
//WEPoint sPrePoint = WEMapTools.ToMapPoint(sPreMouseLocation);
WEPoint sPrePoint = WEMapTools.ToMapPoint(mStartPoint);
//PointF sCurMouseLocation = new PointF(e.Location.X, e.Location.Y);
//WEPoint sCurPoint = WEMapTools.ToMapPoint(sCurMouseLocation);
WEPoint sCurPoint = WEMapTools.ToMapPoint(e.Location);
WEPoint offset = WEMapTools.ToMapPoint(new PointF(e.Location.X - mStartPoint.X, e.Location.Y - mStartPoint.Y));
//修改offset
double mOffsetX = sPrePoint.X - sCurPoint.X;
double mOffsetY = sPrePoint.Y - sCurPoint.Y;
WERectangle newRect = new WERectangle(WEMapTools.DisplayMBR.MinX + mOffsetX, WEMapTools.DisplayMBR.MaxX + mOffsetX,
WEMapTools.DisplayMBR.MinY + mOffsetY, WEMapTools.DisplayMBR.MaxY + mOffsetY);
WEMapTools.DisplayMBR = newRect;
ZoomByMBR(WEMapTools.DisplayMBR);
mStartPoint = e.Location;
/*
* //修改offset
* mOffsetX = (mStartPoint.X - e.Location.X) * WEMapTools.DisplayMBR.Width / WEMapTools.DisplayWidth;
* mOffsetY = (e.Location.Y - mStartPoint.Y) * WEMapTools.DisplayMBR.Height / WEMapTools.DisplayHeight;
* newRect = new WERectangle(WEMapTools.DisplayMBR.MinX + mOffsetX, WEMapTools.DisplayMBR.MaxX + mOffsetX,
* WEMapTools.DisplayMBR.MinY + mOffsetY, WEMapTools.DisplayMBR.MaxY + mOffsetY);
* WEMapTools.DisplayMBR = newRect;
* ZoomByMBR(WEMapTools.DisplayMBR);
* mStartPoint.X = e.Location.X;
* mStartPoint.Y = e.Location.Y;
*/
}
break;
case 4:
mStartPoint = e.Location;
List <WEPoint> tem = new List <WEPoint>();
if (CurrentEdit < 0 || CurrentEdit > AllLayer.Count())
{
break;
}
if (NodeEdit == 0)
{
switch (AllLayer[CurrentEdit].FeatureType)
{
case FeatureType.WEMultiPoint:
case FeatureType.WEEntityPoint:
if (NewPoints.Count() != 0)
{
NewPoints[0] = e.Location;
EditFeature.Geometries = new WEMultiPoint(new WEPoint[1] {
WEMapTools.ToMapPoint(NewPoints[0])
});
}
else
{
NewPoints.Add(e.Location);
}
//NewPoints.Clear();
//EditFeature = AllLayer[CurrentEdit].Features.Last();
//AllLayer[CurrentEdit].Features[AllLayer[CurrentEdit].Features.Count() - 1].Geometries = new WEMultiPoint(new WEGeometry[1] { });
break;
case FeatureType.WEEntityPolyline:
case FeatureType.WEMultiPolyline:
NewPoints.Add(e.Location);
WEMultiPolyline temm = (WEMultiPolyline)(EditFeature.Geometries);
WEPolyline temmm = (WEPolyline)temm.Polylines[temm.Polylines.Count() - 1];
//tem.AddRange(temmm.Points);
foreach (var i in NewPoints)
{
tem.Add(WEMapTools.ToMapPoint(i));
}
temmm.Points = (WEPoint[])tem.ToArray();
temm.DeletePolyline(temm.Polylines.Count() - 1);
temm.Add(temmm);
EditFeature.Geometries = temm;
NewPoints.RemoveAt(NewPoints.Count - 1);
break;
case FeatureType.WEEntityPolygon:
case FeatureType.WEMultiPolygon:
NewPoints.Add(e.Location);
WEMultiPolygon temm3 = (WEMultiPolygon)(EditFeature.Geometries);
WEPolygon temmm3 = (WEPolygon)temm3.Polygons[temm3.Polygons.Count() - 1];
//tem.AddRange(temmm3.Points);
foreach (var i in NewPoints)
{
tem.Add(WEMapTools.ToMapPoint(i));
}
temmm3.Points = (WEPoint[])tem.ToArray();
temm3.DeletePolygon(temm3.Polygons.Count() - 1);
temm3.Add(temmm3);
EditFeature.Geometries = temm3;
NewPoints.RemoveAt(NewPoints.Count - 1);
break;
}
Refresh();
}
else if (EditFeature.Geometries.PointCount != 0)
{
CursorMap = WEMapTools.ToMapPoint(e.Location);
switch (EditFeature.FeatureType)
{
case FeatureType.WEMultiPoint:
case FeatureType.WEEntityPoint:
isGravitationCaptured = -1;
for (int i = 0; i < EditFeature.Geometries.PointCount; i++)
{
WEPoint poi = (WEPoint)((WEMultiPoint)EditFeature.Geometries).Points[i];
if (WEMapTools.IsPointOnPoint(CursorMap, poi))
{
isGravitationCaptured = i;
break;
}
}
break;
case FeatureType.WEEntityPolyline:
case FeatureType.WEMultiPolyline:
isGravitationCaptured = -1;
for (int i = 0; i < EditFeature.Geometries.PointCount; i++)
{
WEPolyline polyline = (WEPolyline)((WEMultiPolyline)EditFeature.Geometries).Polylines[i];
for (int j = 0; j < polyline.PointCount; j++)
{
if (WEMapTools.IsPointOnPoint(CursorMap, polyline.Points[j]))
{
isGravitationCaptured = j;
break;
}
}
if (isGravitationCaptured != -1)
{
helpGravitationCaptured = i;
break;
}
if (polyline.PointCount == 1)
{
continue;
}
for (int j = 1; j < polyline.PointCount; j++)
{
if (WEMapTools.IsPointOnPolyline(CursorMap, new WEPolyline(new WEPoint[2] {
polyline.Points[j], polyline.Points[j - 1]
})))
{
;
}
{
isGravitationCaptured = j;
break;
}
}
if (isGravitationCaptured != -1)
{
helpGravitationCaptured = -i;
break;
}
}
break;
case FeatureType.WEEntityPolygon:
case FeatureType.WEMultiPolygon:
isGravitationCaptured = -1;
for (int i = 0; i < EditFeature.Geometries.PointCount; i++)
{
WEPolygon polygon = (WEPolygon)((WEMultiPolyline)EditFeature.Geometries).Polylines[i];
for (int j = 0; j < polygon.PointCount; j++)
{
if (WEMapTools.IsPointOnPoint(CursorMap, polygon.Points[j]))
{
isGravitationCaptured = j;
break;
}
}
if (isGravitationCaptured != -1)
{
helpGravitationCaptured = i;
break;
}
if (polygon.PointCount == 1)
{
continue;
}
for (int j = 1; j < polygon.PointCount; j++)
{
if (WEMapTools.IsPointOnPolyline(CursorMap, new WEPolyline(new WEPoint[2] {
polygon.Points[j], polygon.Points[j - 1]
})))
{
;
}
{
isGravitationCaptured = j;
break;
}
}
if (WEMapTools.IsPointOnPolyline(CursorMap, new WEPolyline(new WEPoint[2] {
polygon.Points.Last(), polygon.Points.First()
})))
{
;
}
isGravitationCaptured = polygon.PointCount;
if (isGravitationCaptured != -1)
{
helpGravitationCaptured = -i;
break;
}
}
break;
default:
isGravitationCaptured = -1;
break;
}
if (isGravitationCaptured != -1)
{
Cursor = Cursors.SizeAll;
using (Graphics g = Graphics.FromHwnd(this.Handle))
{
g.FillRectangle(new SolidBrush(Color.Black), 0, 0, 100, 100);
}
}
else
{
Cursor = Cursors.Cross;
}
}
if (isGravitationCaptured != -1)
{
}
break;
case 5: //选择要素
if (e.Button == MouseButtons.Left)
{
Refresh();
Graphics g = Graphics.FromHwnd(this.Handle);
Pen sBoxPen = new Pen(mcSelectingBoxColor, mcSelectingBoxWidth);
float sMinX = Math.Min(mStartPoint.X, e.Location.X);
float sMinY = Math.Min(mStartPoint.Y, e.Location.Y);
float sMaxX = Math.Max(mStartPoint.X, e.Location.X);
float sMaxY = Math.Max(mStartPoint.Y, e.Location.Y);
g.DrawRectangle(sBoxPen, sMinX, sMinY, sMaxX - sMinX, sMaxY - sMinY);
g.Dispose();
}
break;
default:
mStartPoint = e.Location;
break;
}
}