public override void Draw(Graphics _Graphics, XView _View)
{
Point screenPoint = _View.ToScreenPoint(Centroid);
_Graphics.FillEllipse(new SolidBrush(Color.Red),
new Rectangle(screenPoint.X - 3, screenPoint.Y - 3, 6, 6));
}
public void Draw(Graphics _Graphics, XView _View)
{
for (int i = 0; i < Features.Count; i++)
{
Features[i].Draw(_Graphics, _View, DrawAttributeOrNot, LabelIndex);
}
}
internal void SelectByClick(Point location, XView view)
{
//for (int i = 0; i < Features.Count; i++)
//{
// if (Features[i].)
//}
}
public void Draw(Graphics _Graphics, XView _View, bool _DrawAttributeOrNot, int _Index)
{
Spatial.Draw(_Graphics, _View);
if (_DrawAttributeOrNot)
{
Attribute.Draw(_Graphics, _View, Spatial.Centroid, _Index);
}
}
public void Draw(Graphics _Graphics, XView _View, XVertex _Location, int _Index)
{
Point screenPoint = _View.ToScreenPoint(_Location);
_Graphics.DrawString(GetValue(_Index).ToString(),
new Font("宋体", 20),
new SolidBrush(Color.Green), screenPoint);
}
public FormXGIS()
{
InitializeComponent();
view = new XView(
new XExtent(
new XVertex(0, 0),
new XVertex(1, 1)),
this.ClientRectangle
);
}
public void Draw(Graphics _Graphics, XView _View)
{
for (int i = 0; i < Features.Count; i++)
{
if (Features[i].Spatial.Extent.IntersectWith(_View.CurrentMapExtent))
{
Features[i].Draw(_Graphics, _View, DrawAttributeOrNot, LabelIndex);
}
}
}
public FormXGIS()
{
InitializeComponent();
this.SetStyle(
System.Windows.Forms.ControlStyles.UserPaint |
System.Windows.Forms.ControlStyles.AllPaintingInWmPaint |
System.Windows.Forms.ControlStyles.OptimizedDoubleBuffer,
true);
backWindow = BufferedGraphicsManager.Current;
view = new XView(
new XExtent(
new XVertex(0, 0),
new XVertex(1, 1)),
this.ClientRectangle
);
}
public abstract void Draw(Graphics _Graphics, XView _View);
public override void Draw(Graphics _Graphics, XView _View)
{
Point[] points = _View.ToScreenPoints(AllVertexes);
_Graphics.FillPolygon(new SolidBrush(Color.Yellow), points);
_Graphics.DrawPolygon(new Pen(Color.White, 2), points);
}
public override void Draw(Graphics _Graphics, XView _View)
{
_Graphics.DrawLines(new Pen(Color.Red, 2),
_View.ToScreenPoints(AllVertexes));
}
internal void SelectByClick(Point location, XView view)
{
XVertex v = view.ToMapVertex(location);
foreach (XFeature feature in Features)
{
feature.Selected = false;
}
if (ShapeType == SHAPETYPE.point)
{
Double distance = Double.MaxValue;
int id = -1;
for (int i = 0; i < Features.Count; i++)
{
XPointSpatial point = (XPointSpatial)(Features[i].Spatial);
double dist = point.Distance(v);
if (dist < distance)
{
distance = dist;
id = i;
}
}
double scd = view.ToScreenDistance(v, Features[id].Spatial.Centroid);//转为屏幕距离
if (scd <= 5)
{
Features[id].Selected = true;
}
else
{
Console.WriteLine("屏幕距离为" + scd + ",选择无效!!");
}
}
else if (ShapeType == SHAPETYPE.line)
{
Double distance = Double.MaxValue;
int id = -1;
for (int i = 0; i < Features.Count; i++)
{
XLineSpatial line = (XLineSpatial)(Features[i].Spatial);
double dist = line.Distance(v);
if (dist < distance)
{
distance = dist;
id = i;
}
}
double scd = view.ToScreenDistance(distance);//转为屏幕距离
if (scd <= 5)
{
Features[id].Selected = true;
}
else
{
Console.WriteLine("屏幕距离为" + scd + ",选择无效!!");
}
}
else if (ShapeType == SHAPETYPE.polygon)
{
for (int i = 0; i < Features.Count; i++)
{
XPolygonSpatial polygon = (XPolygonSpatial)(Features[i].Spatial);
if (polygon.Incude(v))
{
Features[i].Selected = true;
}
}
}
}
public override void Draw(Graphics _Graphics, XView _View, bool _Selected)
{
Point[] points = _View.ToScreenPoints(AllVertexes);
_Graphics.FillPolygon(new SolidBrush(_Selected ? Color.Red : Color.Green), points);
_Graphics.DrawPolygon(new Pen(Color.White, 2), points);
}
public override void Draw(Graphics _Graphics, XView _View, bool _Selected)
{
_Graphics.DrawLines(new Pen(_Selected ? Color.Red : Color.Green, 2),
_View.ToScreenPoints(AllVertexes));
}
public abstract void Draw(Graphics _Graphics, XView _View, bool _Selected);
internal void selectByClick(Point location, XView view)
{
throw new NotImplementedException();
}