protected override void OnPaint(PaintEventArgs e)
{
e.Graphics.SmoothingMode = m_smoothingMode;
if (mScreenDisplay.IsCacheDirty)
{
mScreenDisplay.StartRecording();
mScreenDisplay.StartDrawing(e.Graphics, 0);
mMap.Draw(mScreenDisplay);
object newObj = mScreenDisplay.NewObject;
if (newObj != null)
{
IScreenDisplayDraw drawNew = mScreenDisplay as IScreenDisplayDraw;
if (newObj is LineString)
{
Pen mpen = new Pen(Color.Blue);
drawNew.DrawLineString(newObj as LineString, mpen);
}
else if (newObj is MultiLineString)
{
Pen mpen = new Pen(Color.Blue);
drawNew.DrawMultiLineString(newObj as MultiLineString, mpen);
}
else if (newObj is Polygon)
{
Brush brush = new SolidBrush(Color.Blue);
drawNew.DrawPolygon(newObj as Polygon, brush, Pens.AliceBlue, false);
}
}
mScreenDisplay.FinishDrawing();
mScreenDisplay.StopRecording();
}
}
public override void Draw(IScreenDisplay display)
{
IScreenDisplayDraw displayDraw = display as IScreenDisplayDraw;
if (ShapeType == RgEnumShapeType.RgPoint)
{
for (int i = 0; i < mGeometries.Count; i++)
{
RGeos.Geometries.Point pt = mGeometries[i] as RGeos.Geometries.Point;
if (pt != null)
{
displayDraw.DrawPoint(pt, new Pen(Color.Red));
}
}
}
if (ShapeType == RgEnumShapeType.RgLineString)
{
for (int i = 0; i < mGeometries.Count; i++)
{
LineString pt = mGeometries[i] as LineString;
if (pt != null)
{
displayDraw.DrawLineString(pt, new Pen(Color.Red));
// display as r
}
}
}
if (ShapeType == RgEnumShapeType.RgMultiLineString)
{
for (int i = 0; i < mGeometries.Count; i++)
{
MultiLineString pt = mGeometries[i] as MultiLineString;
if (pt != null)
{
displayDraw.DrawMultiLineString(pt, new Pen(Color.Red));
}
}
}
if (ShapeType == RgEnumShapeType.RgPolygon)
{
for (int i = 0; i < mGeometries.Count; i++)
{
Polygon pt = mGeometries[i] as Polygon;
if (pt != null)
{
Pen mPen = new Pen(Color.Red);
Brush brush = new SolidBrush(Color.Blue);
displayDraw.DrawPolygon(pt, brush, mPen, false);
}
}
}
}
public override void OnMouseMove(int x, int y)
{
if (n == 1)
{
}
if (n == 2)
{
j++;
tmpVertices = new List <RGeos.Geometries.RgPoint>();
RGeos.Geometries.RgPoint P0 = vertices[0];
RGeos.Geometries.RgPoint P1 = vertices[1];
RGeos.Geometries.RgPoint pt = mScreenDisplay.DisplayTransformation.ToUnit(new PointF(x, y));
RGeos.Geometries.RgPoint P2 = pt;
tmpVertices.Add(P0);
tmpVertices.Add(P1);
tmpVertices.Add(P2);
LinearRing tmpLine = new LinearRing(tmpVertices);
tempPolygon.ExteriorRing = tmpLine;
if (j == 1)
{
BoundingBox box = tempPolygon.GetBoundingBox();
PointF lowLeft = mScreenDisplay.DisplayTransformation.ToScreen(box.TopLeft);
PointF topRight = mScreenDisplay.DisplayTransformation.ToScreen(box.BottomRight);
double xmin = lowLeft.X;
double ymin = lowLeft.Y;
double w = Math.Abs(topRight.X - lowLeft.X);
double h = Math.Abs(topRight.Y - lowLeft.Y);
Rectangle invalidaterect = new Rectangle((int)xmin, (int)ymin, (int)w, (int)h);
invalidaterect.Inflate(2, 2);
(mScreenDisplay as ScreenDisplay).RepaintStatic(invalidaterect);
j = 0;
}
SolidBrush brush = new SolidBrush(Color.Blue);
Pen pen = new Pen(brush);
mScreenDisplay.StartDrawing(mMapCtrl.CreateGraphics(), 1);
mScreenDisplayDraw.DrawPolygon(tempPolygon, brush, pen, false);
mScreenDisplay.FinishDrawing();
}
else if (n > 2)
{
BoundingBox box = tempPolygon.GetBoundingBox();
PointF lowLeft = mScreenDisplay.DisplayTransformation.ToScreen(box.TopLeft);
PointF topRight = mScreenDisplay.DisplayTransformation.ToScreen(box.BottomRight);
double xmin = lowLeft.X;
double ymin = lowLeft.Y;
double w = Math.Abs(topRight.X - lowLeft.X);
double h = Math.Abs(topRight.Y - lowLeft.Y);
Rectangle invalidaterect = new Rectangle((int)xmin, (int)ymin, (int)w, (int)h);
invalidaterect.Inflate(2, 2);
(mScreenDisplay as ScreenDisplay).RepaintStatic(invalidaterect);
tmpVertices = new List <RGeos.Geometries.RgPoint>();
RGeos.Geometries.RgPoint P0 = vertices[0];
RGeos.Geometries.RgPoint P1 = vertices[n - 1];
RGeos.Geometries.RgPoint pt = mScreenDisplay.DisplayTransformation.ToUnit(new PointF(x, y));
RGeos.Geometries.RgPoint P2 = pt;
tmpVertices.Add(P0);
tmpVertices.Add(P1);
tmpVertices.Add(P2);
LinearRing tmpLine = new LinearRing(tmpVertices);
tempPolygon.ExteriorRing = tmpLine;
SolidBrush brush = new SolidBrush(Color.Blue);
SolidBrush brush2 = new SolidBrush(Color.Pink);
Pen pen = new Pen(brush2);
mScreenDisplay.StartDrawing(mMapCtrl.CreateGraphics(), 1);
mScreenDisplayDraw.DrawPolygon(tempPolygon, brush, pen, false);
mScreenDisplay.FinishDrawing();
}
}
public override void Draw(IScreenDisplay display)
{
IScreenDisplayDraw displayDraw = display as IScreenDisplayDraw;
if (ShapeType == RgEnumShapeType.RgPoint)
{
for (int i = 0; i < mGeometries.Count; i++)
{
Feature feat = mGeometries[i];
RGeos.Geometries.RgPoint pt = feat.Shape as RGeos.Geometries.RgPoint;
if (pt != null)
{
if (feat.IsSelected == false)
{
displayDraw.DrawPoint(pt, new Pen(Color.Red), new SolidBrush(Color.Red));
}
else
{
displayDraw.DrawPoint(pt, new Pen(Color.LightBlue), new SolidBrush(Color.LightBlue));
}
}
}
}
if (ShapeType == RgEnumShapeType.RgLineString)
{
for (int i = 0; i < mGeometries.Count; i++)
{
Feature feat = mGeometries[i];
LineString pt = feat.Shape as LineString;
if (pt != null)
{
if (feat.IsSelected == false)
{
displayDraw.DrawLineString(pt, new Pen(Color.Red));
}
else
{
displayDraw.DrawLineString(pt, new Pen(Color.LightBlue));
}
// display as r
}
}
}
if (ShapeType == RgEnumShapeType.RgMultiLineString)
{
for (int i = 0; i < mGeometries.Count; i++)
{
Feature feat = mGeometries[i];
MultiLineString pt = feat.Shape as MultiLineString;
if (pt != null)
{
if (feat.IsSelected == false)
{
displayDraw.DrawMultiLineString(pt, new Pen(Color.Red));
}
else
{
displayDraw.DrawMultiLineString(pt, new Pen(Color.LightBlue));
}
}
}
}
if (ShapeType == RgEnumShapeType.RgPolygon)
{
for (int i = 0; i < mGeometries.Count; i++)
{
Feature feat = mGeometries[i];
Polygon polygon = feat.Shape as Polygon;
if (polygon != null)
{
Pen mPen = new Pen(Color.Red);
Brush brush = new SolidBrush(Color.Blue);
if (feat.IsSelected == false)
{
displayDraw.DrawPolygon(polygon, brush, mPen, false);
}
else
{
displayDraw.DrawPolygon(polygon, brush, new Pen(Color.LightBlue), false);
}
}
}
}
}
