/// <summary>
/// 点选
/// </summary>
/// <returns>被选中要素FID的List</returns>
internal override List <int> SelectByPoint(Point mouseLocation, Rectangle bounds, PointF centerPos, double scale)
{
List <int> selectedID = new List <int>();
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polygons.Count; i++)
{
MyPoint[] screenPoints = new MyPoint[polygons[i].PointCount];
for (int j = 0; j < polygons[i].PointCount; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
MyPoint screen = new MyPoint(xScreen, bounds.Height - yScreen);
screenPoints[j] = screen;
}
polygons[i].Selected = GeometryTools.IsPointInPolygon(new MyPoint(mouseLocation.X, mouseLocation.Y), screenPoints);
if (polygons[i].Selected == true)
{
selectedID.Add(i);
}
}
return(selectedID);
}
/// <summary>
/// 画注记
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
/// <param name="fid2Text"></param>
internal override void DrawLabel(Graphics g, Rectangle bounds, PointF centerPos, double scale, Dictionary <int, string> fid2Text, TextSymbol textSymbol)
{
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polygons.Count; i++)
{
List <PointF> pointfs = new List <PointF>();
for (int j = 0; j < polygons[i].PointCount; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
PointF p = new PointF((float)xScreen, bounds.Height - (float)yScreen);
pointfs.Add(p);
}
RectangleF mbr = GeometryTools.GetMBR(pointfs.ToArray());
string text = fid2Text[polygons[i].FID];
if (Math.Max(mbr.Width, mbr.Height) > textSymbol.TextStyle.TextSize * text.Length)
{
TextSymbol.PolygonLabel(pointfs.ToArray(), g, textSymbol, text);
}
}
}
/// <summary>
/// 唯一值渲染和分级渲染时的绘制要素
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
/// <param name="fid2Symbol"></param>
internal override void DrawSpaceData(Graphics g, Rectangle bounds, PointF centerPos, double scale, Dictionary <int, Symbol> fid2Symbol)
{
//选中要素的样式
Brush selectedBrush = new SolidBrush(Color.Cyan);
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < myPoints.Count; i++)
{
//从symbol中获取样式
PointSymbol ps = (PointSymbol)fid2Symbol[myPoints[i].FID];
MyPoint xyProjection = ETCProjection.LngLat2XY(myPoints[i]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
if (GeometryTools.IsPointInBox(new MyPoint(xScreen, yScreen), new MyRectangle(bounds.X, bounds.Width, bounds.Y, bounds.Height)) == true)
{
if (myPoints[i].Selected == true)
{
Rectangle rect = new Rectangle((int)xScreen - 5, bounds.Height - (int)yScreen - 5, 10, 10);
g.FillEllipse(selectedBrush, rect);
}
else
{
ps.GetSymbol(g, new PointF((float)xScreen, bounds.Height - (float)yScreen));
}
}
}
}
/// <summary>
/// 根据矩形盒选择要素，矩形盒坐标位于投影坐标系
/// </summary>
/// <param name="box">矩形盒</param>
internal override List <int> SelectByBox(MyRectangle box)
{
List <int> selectedID = new List <int>();
for (int i = 0; i < polygons.Count; i++)
{
polygons[i].Selected = GeometryTools.IsPolygonCompleteInBox(polygons[i], box);
if (polygons[i].Selected == true)
{
selectedID.Add(i);
}
}
return(selectedID);
}
/// <summary>
/// 根据矩形盒选择要素，矩形盒坐标位于投影坐标系
/// </summary>
/// <param name="box">矩形盒</param>
internal override List <int> SelectByBox(MyRectangle box)
{
List <int> selectedID = new List <int>();
for (int i = 0; i < myPoints.Count; i++)
{
MyPoint pointXY = ETCProjection.LngLat2XY(myPoints[i]); //投影坐标系下的坐标
myPoints[i].Selected = GeometryTools.IsPointInBox(pointXY, box);
if (myPoints[i].Selected == true)
{
selectedID.Add(i);
}
}
return(selectedID);
}
/// <summary>
/// 唯一值渲染和分级渲染时的绘制要素
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
/// <param name="fid2Symbol"></param>
internal override void DrawSpaceData(Graphics g, Rectangle bounds, PointF centerPos, double scale, Dictionary <int, Symbol> fid2Symbol)
{
//选中要素的样式
Pen selectedPen = new Pen(Color.Cyan);
selectedPen.Width = 2.5F;
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polylines.Count; i++)
{
//从symbol中获取样式
LineSymbol ls = (LineSymbol)fid2Symbol[polylines[i].FID];
Pen mypen = ls.GetPen;
List <int> parts = new List <int>(polylines[i].firstIndex);
parts.Add(polylines[i].PointCount);
for (int k = 0; k < polylines[i].firstIndex.Length; k++) //对于每一条多线的子线段
{
List <PointF> pointfs = new List <PointF>();
for (int j = parts[k]; j < parts[k + 1]; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polylines[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
PointF p = new PointF((float)xScreen, bounds.Height - (float)yScreen);
pointfs.Add(p);
}
if (GeometryTools.IsPointsPartInRectangle(pointfs.ToArray(), new MyRectangle(bounds.X, bounds.Width, bounds.Y, bounds.Height)) == true)
{
if (polylines[i].Selected == false)
{
g.DrawLines(mypen, pointfs.ToArray());
}
else
{
g.DrawLines(selectedPen, pointfs.ToArray());
}
}
}
}
}
/// <summary>
/// 点选选中要素的顶点
/// </summary>
/// <param name="mouseLocation"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
internal override void SelectVertex(Point mouseLocation, Rectangle bounds, PointF centerPos, double scale)
{
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polygons.Count; i++)
{
if (polygons[i].Selected == true) //polylines[i]被选中
{
for (int j = 0; j < polygons[i].PointCount; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
MyPoint screen = new MyPoint(xScreen, bounds.Height - yScreen); //polygons[i].Points[j]在屏幕坐标系的位置
polygons[i].Points[j].Selected = GeometryTools.IsPointInCircle(new MyPoint(mouseLocation.X, mouseLocation.Y), screen, margin); //判断polylines[i].Points[j]是否被选中并修改Selected属性的值
}
}
}
}
/// <summary>
/// 点选
/// </summary>
/// <returns>被选中要素FID的List</returns>
internal override List <int> SelectByPoint(Point mouseLocation, Rectangle bounds, PointF centerPos, double scale)
{
List <int> selectedID = new List <int>();
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < myPoints.Count; i++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(myPoints[i]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height - bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
MyPoint screen = new MyPoint(xScreen, yScreen);
myPoints[i].Selected = GeometryTools.IsPointInCircle(new MyPoint(mouseLocation.X, mouseLocation.Y), screen, margin);
if (myPoints[i].Selected == true)
{
selectedID.Add(i);
}
}
return(selectedID);
}
/// <summary>
/// 简单渲染时的绘制要素
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
/// <param name="centerPos"></param>
/// <param name="scale"></param>
/// <param name="symbol"></param>
internal override void DrawSpaceData(Graphics g, Rectangle bounds, PointF centerPos, double scale, Symbol symbol)
{
//选中要素的样式
Pen selectedPen = new Pen(Color.Cyan);
selectedPen.Width = 2.5F;
//从symbol中获取样式
PolygonSymbol ps = (PolygonSymbol)symbol;
Pen mypen = ps.LineStyle.GetPen;
Brush mybrush = new SolidBrush(ps.GetColor());
MyPoint xyCenter = ETCProjection.LngLat2XY(new MyPoint(centerPos.X, centerPos.Y));
double xmin = xyCenter.X - scale * bounds.Width / 2;
double xmax = xyCenter.X + scale * bounds.Width / 2;
double ymin = xyCenter.Y - scale * bounds.Height / 2;
double ymax = xyCenter.Y + scale * bounds.Height / 2;
for (int i = 0; i < polygons.Count; i++)
{
List <int> parts = new List <int>(polygons[i].firstIndex);
parts.Add(polygons[i].PointCount);
for (int k = 0; k < polygons[i].firstIndex.Length; k++) //对于每一个MultiPolygon的子多边形
{
List <PointF> pointfs = new List <PointF>();
for (int j = parts[k]; j < parts[k + 1]; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
PointF p = new PointF((float)xScreen, bounds.Height - (float)yScreen);
pointfs.Add(p);
}
if (GeometryTools.IsPointsPartInRectangle(pointfs.ToArray(), new MyRectangle(bounds.X, bounds.Width, bounds.Y, bounds.Height)) == true)
{
g.DrawPolygon(mypen, pointfs.ToArray());
g.FillPolygon(mybrush, pointfs.ToArray());
}
}
}
for (int i = 0; i < polygons.Count; i++)
{
if (polygons[i].Selected == true)
{
List <int> parts = new List <int>(polygons[i].firstIndex);
parts.Add(polygons[i].PointCount);
for (int k = 0; k < polygons[i].firstIndex.Length; k++) //对于每一个MultiPolygon的子多边形
{
List <PointF> pointfs = new List <PointF>();
for (int j = parts[k]; j < parts[k + 1]; j++)
{
MyPoint xyProjection = ETCProjection.LngLat2XY(polygons[i].Points[j]);
double xScreen = bounds.Width * (xyProjection.X - xmin) / (xmax - xmin);
double yScreen = bounds.Height * (xyProjection.Y - ymin) / (ymax - ymin);
PointF p = new PointF((float)xScreen, bounds.Height - (float)yScreen);
pointfs.Add(p);
}
if (GeometryTools.IsPointsPartInRectangle(pointfs.ToArray(), new MyRectangle(bounds.X, bounds.Width, bounds.Y, bounds.Height)) == true)
{
g.DrawPolygon(selectedPen, pointfs.ToArray()); //画选中多边形的轮廓
}
}
}
}
}