public override void OnMouseDown(int x, int y, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
n++;
if (n == 1)
{
SharpMap.Geometries.Point P0 = new SharpMap.Geometries.Point(x, y);
SharpMap.Geometries.Point P1 = new SharpMap.Geometries.Point(x, y);
SharpMap.Geometries.Point P2 = new SharpMap.Geometries.Point(x, y);
vertices.Add(P0);
vertices.Add(P1);
vertices.Add(P2);
line = new LinearRing(vertices);
}
else if (n == 2)
{
vertices[1] = new SharpMap.Geometries.Point(x, y);
PointF p1 = new PointF((float)vertices[0].X, (float)vertices[0].Y);
PointF p2 = new PointF(x, y);
mScreenDisplay.DrawPolyline(Pens.Blue, p1, p2);
//n = 0;
}
else if (n == 3)
{
vertices[2] = new SharpMap.Geometries.Point(x, y);
polygon.ExteriorRing = line;
if (line != null)
{
SolidBrush brush = new SolidBrush(Color.Blue);
Pen pen = new Pen(brush);
// mScreenDisplay.DrawPolygon(polygon, brush, pen, false);
mScreenDisplay.NewObject = polygon;
}
}
else
{
SharpMap.Geometries.Point P4 = new SharpMap.Geometries.Point(x, y);
vertices.Add(P4);
SolidBrush brush = new SolidBrush(Color.Blue);
Pen pen = new Pen(brush);
// mScreenDisplay.DrawPolygon(polygon, brush, pen, false);
mScreenDisplay.NewObject = polygon;
}
mMapCtrl.Refresh();
}
else if (e.Button == MouseButtons.Right)
{
mMapCtrl.Refresh();
vertices = new List <SharpMap.Geometries.Point>();
polygon = new Polygon();
tempPolygon = new Polygon();
n = 0;
}
}
public override void OnMouseMove(int x, int y)
{
if (n < 1)
{
}
else
{
double xmin = line.Envelop.Left;
double ymin = line.Envelop.Lower;
double w = line.Envelop.Width;
double h = line.Envelop.Height;
Rectangle invalidaterect = new Rectangle((int)xmin, (int)ymin, (int)w, (int)h);
invalidaterect.Inflate(2, 2);
(mScreenDisplay as ScreenDisplayOld).RepaintStatic(invalidaterect);
PointF p1 = new PointF((float)line.P0.X, (float)line.P0.Y);
PointF p2 = new PointF(x, y);
mScreenDisplay.DrawPolyline(Pens.Blue, p1, p2);
line.P1 = new RPoint(x, y, 0);
}
}
public override void Draw(IScreenDisplayOld display)
{
if (ShapeType == 0)
{
for (int i = 0; i < mGeometries.Count; i++)
{
RPoint pt = mGeometries[i] as RPoint;
if (pt != null)
{
display.DrawPoint(new Pen(Color.Red), pt);
}
}
}
if (ShapeType == 1)
{
for (int i = 0; i < mGeometries.Count; i++)
{
RPolyline pt = mGeometries[i] as RPolyline;
if (pt != null)
{
display.DrawPolyline(new Pen(Color.Red), pt);
}
}
}
if (ShapeType == 2)
{
for (int i = 0; i < mGeometries.Count; i++)
{
RPolygon pt = mGeometries[i] as RPolygon;
if (pt != null)
{
display.DrawPolygon(new Pen(Color.Red), pt);
}
}
}
}
