public override void MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
Panel panel = (Panel)sender;
this.FromPoint = new Point(e.X, e.Y);
// draw point
MG_BaseDisplay.FillPoint(panel.CreateGraphics(), brush, this.FromPoint, MG_Constant.PointRadius);
// screen to map
this.MapPoint = MG_BaseRender.ToPoint(this.FromPoint, this.MapView);
//1 create a feature
// 1.1 set geometry
this.Feature.SetGeometry(this.MapPoint);
// 1.2 set field value
for (int i = 0; i < this.Feature.GetFieldSet().Count(); i++)
{
this.Feature.SetValue(i, null);
}
//2 create a new feature
MG_Feature newFeature = new MG_Feature(this.Feature);
//3 add new feature to layer
this.Layer.AddFeature(newFeature);
//4 clear data to store the next point
this.MapPoint.Clear();
}
}
public override void MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.IsMouseDown = true;
Panel panel = (Panel)sender;
if (this.Step == 0)
{
this.Step = 1;
this.FromPoint = new Point(e.X, e.Y);
// store map point
MG_Point mapPoint = MG_BaseRender.ToPoint(this.FromPoint, this.MapView);
this.LineString.Add(mapPoint);
}
else if (this.Step == 1)
{
this.ToPoint = new Point(e.X, e.Y);
// repeat same pattern
this.FromPoint = this.ToPoint;
// store map point
MG_Point mapPoint = MG_BaseRender.ToPoint(this.ToPoint, this.MapView);
this.LineString.Add(mapPoint);
}
}
}
public override void MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
this.IsMouseDown = false;
// screen point to map point
MG_LineString MapLineString = new MG_LineString();
for (int i = 0; i < this.LineString.Count(); i++)
{
MG_Point screenPoint = this.LineString.GetAt(i);
Point screen = new Point((int)screenPoint.x, (int)screenPoint.y);
MG_Point mapPoint = MG_BaseRender.ToPoint(screen, this.MapView);
MapLineString.Add(mapPoint);
}
MG_LineString MapLineStringOther = new MG_LineString();
for (int i = 0; i < this.LineStringOther.Count(); i++)
{
MG_Point screenPoint = this.LineStringOther.GetAt(i);
Point screen = new Point((int)screenPoint.x, (int)screenPoint.y);
MG_Point mapPoint = MG_BaseRender.ToPoint(screen, this.MapView);
MapLineStringOther.Add(mapPoint);
}
//1 create a feature
// 1.1 set geometry
this.Feature.SetGeometry(MapLineString);
// 1.2 set field value
for (int i = 0; i < this.Feature.GetFieldSet().Count(); i++)
{
this.Feature.SetValue(i, null);
}
//2 create a new feature
MG_Feature newFeature1 = new MG_Feature(this.Feature);
//3 add new feature to layer
this.Layer.AddFeature(newFeature1);
//4 clear data to store the next linestring
this.LineString.Clear();
//1 create a feature
// 1.1 set geometry
this.Feature.SetGeometry(MapLineStringOther);
// 1.2 set field value
for (int i = 0; i < this.Feature.GetFieldSet().Count(); i++)
{
this.Feature.SetValue(i, null);
}
//2 create a new feature
MG_Feature newFeature2 = new MG_Feature(this.Feature);
//3 add new feature to layer
this.Layer.AddFeature(newFeature2);
//4 clear data to store the next linestring
this.LineStringOther.Clear();
}
}
public override void MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
this.IsMouseDown = false;
Panel panel = (Panel)sender;
if (this.Step == 0)
{
}
else if (this.Step == 1)
{
}
else if (this.Step == 2)
{
// add last point
this.Point3 = new Point(e.X, e.Y);
MG_Point mapPoint3 = MG_BaseRender.ToPoint(Point3, this.MapView);
this.LineString.Add(mapPoint3);
// add first point again(same to first point)
MG_Point firstPoint = MG_BaseRender.ToPoint(this.FromPoint, this.MapView);
this.LineString.Add(firstPoint);
// add to polygon
this.Polygon.Add(this.LineString);
//1 create a feature
// 1.1 set geometry
this.Feature.SetGeometry(this.Polygon);
// 1.2 set field value
for (int i = 0; i < this.Feature.GetFieldSet().Count(); i++)
{
this.Feature.SetValue(i, null);
}
//2 create a new feature
MG_Feature newFeature = new MG_Feature(this.Feature);
//3 add new feature to layer
this.Layer.AddFeature(newFeature);
//4 clear data to store the next linestring
this.Polygon.Clear();
this.LineString.Clear();
// 5 reset control params
this.Step = 0;
this.FromPoint = Point.Empty;
this.ToPoint = Point.Empty;
this.Point3 = Point.Empty;
}
}
}
public override void MouseUp(object sender, MouseEventArgs e)
{
if (this.IsMouseDown)
{
this.IsMouseDown = false;
Panel panel = (Panel)sender;
this.ToPoint = new Point(e.X, e.Y);
// pan map(screen point --->map point)
MG_Point mpFrom = MG_BaseRender.ToPoint(this.FromPoint, this.MapView);
MG_Point mpTo = MG_BaseRender.ToPoint(this.ToPoint, this.MapView);
double xoff = mpFrom.x - mpTo.x;
double yoff = mpFrom.y - mpTo.y;
this.MapView.XYoff(xoff, yoff);
this.CurrentMap.AddZoomToHistory(this.MapView);
panel.Refresh();
}
}
