private void Form1_MouseClick(object sender, MouseEventArgs e)
{
if (layer == null)
{
return;
}
GISVertex v = view.ToMapVertex(e.Location);
Console.WriteLine("mapvertex @" + v.x.ToString() + "|" + v.y.ToString()); //此处鼠标点到地图点的转换???
//创建点选粗选矩形
GISSelect s = new GISSelect();
GISExtent MinSelectExtent = s.BuildExtent(v, view);
Point bottomleft = view.ToScreenPoint(MinSelectExtent.bottomleft);
Point upleft = view.ToScreenPoint(new GISVertex(MinSelectExtent.bottomleft.x, MinSelectExtent.upright.y));
Point upright = view.ToScreenPoint(MinSelectExtent.upright);
Point bottomright = view.ToScreenPoint(new GISVertex(MinSelectExtent.upright.x, MinSelectExtent.bottomleft.y));
Point[] points = new Point[] { bottomleft, upleft, upright, bottomright };
Graphics graphics = this.CreateGraphics();
graphics.DrawPolygon(new Pen(GISConst.PolygonBoundaryColor, GISConst.PolygonBoundaryWidth), points);
SelectResult sr = layer.Select(v, view);
if (sr == SelectResult.OK)
{
UpdateMap();
//toolStripStatusLabel1.Text = layer.Selection.Count.ToString();
toolStripStatusLabel2.Text = "click @" + v.x.ToString() + "|" + v.y.ToString();
UpdateAttributeWindow();
//statusStrip1.Text = layer.Selection.Count.ToString();
}
}
private void Form2_MouseUp(object sender, MouseEventArgs e)
{
if (MouseOnMap)
{
MouseOnMap = false;
switch (MouseCommand)
{
case MOUSECOMMAND.Select:
for (int i = 0; i < document.layers.Count; i++)
{
document.layers[i].ClearSelection();
}
if (e.X == MouseStartX && e.Y == MouseStartY)
{
for (int i = 0; i < document.layers.Count; i++)
{
GISFeature feature = document.layers[i].SelectByClick(new Point(e.X, e.Y), view);
if (feature != null)
{
feature.Selected = true;
}
}
}
else
{
GISExtent extent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
for (int i = 0; i < document.layers.Count; i++)
{
List <GISFeature> features = document.layers[i].SelectByExtent(extent);
for (int j = 0; j < features.Count; j++)
{
features[j].Selected = true;
}
}
}
updateview();
if (layerDialog != null)
{
layerDialog.UpdateSelection();
}
break;
case MOUSECOMMAND.ZoomIn:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
GISVertex MouseLocation = view.ToMapVertex(new Point(e.X, e.Y));
double ZoomInfactor = 0.8;
double newwidth = view.CurrentMapExtent.Width * ZoomInfactor;
double newheight = view.CurrentMapExtent.Height * ZoomInfactor;
double newminx = MouseLocation.x - (MouseLocation.x - view.CurrentMapExtent.MinX) * ZoomInfactor;
double newminy = MouseLocation.y - (MouseLocation.y - view.CurrentMapExtent.MinY) * ZoomInfactor;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
else
{
view.CurrentMapExtent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
}
if (delaunayToolStripMenuItem1.Checked || 泰森多边形ToolStripMenuItem.Checked)
{
updateview2();
}
else
{
updateview();
}
break;
case MOUSECOMMAND.ZoomOut:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
GISVertex MouseLocation = view.ToMapVertex(new Point(e.X, e.Y));
double ZoomOutfactor = 0.8;
double newwidth = view.CurrentMapExtent.Width / ZoomOutfactor;
double newheight = view.CurrentMapExtent.Height / ZoomOutfactor;
double newminx = MouseLocation.x - (MouseLocation.x - view.CurrentMapExtent.MinX) / ZoomOutfactor;
double newminy = MouseLocation.y - (MouseLocation.y - view.CurrentMapExtent.MinY) / ZoomOutfactor;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
else
{
GISExtent extent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
double newwidth = view.CurrentMapExtent.Width * view.CurrentMapExtent.Width / extent.Width;
double newheight = view.CurrentMapExtent.Height * view.CurrentMapExtent.Height / extent.Height;
double newminx = extent.MinX - (extent.MinX - view.CurrentMapExtent.MinX) * newwidth / view.CurrentMapExtent.Width;
double newminy = extent.MinY - (extent.MinY - view.CurrentMapExtent.MinY) * newheight / view.CurrentMapExtent.Height;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
if (delaunayToolStripMenuItem1.Checked || 泰森多边形ToolStripMenuItem.Checked)
{
updateview2();
}
else
{
updateview();
}
break;
case MOUSECOMMAND.Pan:
GISVertex C1 = view.CurrentMapExtent.MapCenter;
GISVertex M1 = view.ToMapVertex(new Point(MouseStartX, MouseStartY));
GISVertex M2 = view.ToMapVertex(new Point(e.X, e.Y));
GISVertex C2 = new GISVertex(C1.x - (M2.x - M1.x), C1.y - (M2.y - M1.y));
view.CurrentMapExtent.SetMapCenter(C2);
updateview();
if (delaunayToolStripMenuItem1.Checked && dlay.Count > 0)
{
delaunayToolStripMenuItem1.PerformClick();
}
if (泰森多边形ToolStripMenuItem.Checked && dlay.Count > 0)
{
泰森多边形ToolStripMenuItem.PerformClick();
}
break;
}
}
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
if (document.IsEmpty())
{
return;
}
if (MouseOnMap == false)
{
return;
}
MouseOnMap = false;
switch (MouseCommand)
{
case MOUSECOMMAND.Select:
//如果CTRL没被按住，就清空选择集 按住CTRL键表示选择多个 即向选择集中新增空间对象
if (Control.ModifierKeys != Keys.Control)
{
document.ClearSelection();
}
//初始化选择结果
SelectResult sr = SelectResult.UnknownType;
if (e.X == MouseStartX && e.Y == MouseStartY)
{
//点选
GISVertex v = view.ToMapVertex(e.Location);
sr = document.Select(v, view);
}
else
{
//框选
GISExtent extent = view.Rect2Extent(e.X, MouseStartX, e.Y, MouseStartY);
sr = document.Select(extent);
}
if (sr == SelectResult.OK || Control.ModifierKeys != Keys.Control)
{
UpdateMap();
UpdateAttributeWindow();
}
break;
case MOUSECOMMAND.Zoomin:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
//单点放大
GISVertex MouseLocation = view.ToMapVertex(e.Location);
GISExtent E1 = view.getRealExtent();
double newwidth = E1.getWidth() * GISConst.ZoominFactor;
double newheight = E1.getHeight() * GISConst.ZoominFactor;
double newminx = MouseLocation.x - (MouseLocation.x - E1.getMinX()) * GISConst.ZoominFactor;
double newminy = MouseLocation.y - (MouseLocation.y - E1.getMinY()) * GISConst.ZoominFactor;
view.UpdateExtent(new GISExtent(newminx, newminx + newwidth, newminy, newminy + newheight));
}
else
{
//拉框放大
view.UpdateExtent(view.Rect2Extent(e.X, MouseStartX, e.Y, MouseStartY));
}
UpdateMap();
break;
case MOUSECOMMAND.Zoomout:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
//单点缩小
GISExtent e1 = view.getRealExtent();
GISVertex mouselocation = view.ToMapVertex(e.Location);
double newwidth = e1.getWidth() / GISConst.ZoomoutFactor;
double newheight = e1.getHeight() / GISConst.ZoomoutFactor;
double newminx = mouselocation.x - (mouselocation.x - e1.getMinX()) / GISConst.ZoomoutFactor;
double newminy = mouselocation.y - (mouselocation.y - e1.getMinY()) / GISConst.ZoomoutFactor;
view.UpdateExtent(new GISExtent(newminx, newminx + newwidth, newminy, newminy + newheight));
}
else
{
//拉框缩小
GISExtent e3 = view.Rect2Extent(e.X, MouseStartX, e.Y, MouseStartY);
GISExtent e1 = view.getRealExtent();
double newwidth = e1.getWidth() * e1.getWidth() / e3.getWidth();
double newheight = e1.getHeight() * e1.getHeight() / e3.getHeight();
double newminx = e3.getMinX() - (e3.getMinX() - e1.getMinX()) * newwidth / e1.getWidth();
double newminy = e3.getMinY() - (e3.getMinY() - e1.getMinY()) * newheight / e1.getHeight();
view.UpdateExtent(new GISExtent(newminx, newminx + newwidth, newminy, newminy + newheight));
}
UpdateMap();
break;
case MOUSECOMMAND.Pan:
if (e.X != MouseStartX && e.Y != MouseStartY)
{
GISExtent e1 = view.getRealExtent();
GISVertex m1 = view.ToMapVertex(new Point(MouseStartX, MouseStartY));
GISVertex m2 = view.ToMapVertex(e.Location);
double newwidth = e1.getWidth();
double newheight = e1.getHeight();
double newminx = e1.getMinX() - (m2.x - m1.x);
double newminy = e1.getMinY() - (m2.y - m1.y);
view.UpdateExtent(new GISExtent(newminx, newminx + newwidth, newminy, newminy + newheight));
UpdateMap();
}
break;
}
}
