public override void Draw(DrawingContext drawingContext, MapArea viewarea, double zoomRate)
{
List <PointInt> positions = collector.ToList().ConvertAll <PointInt>(
new Converter <PointLatLng, PointInt>(ptll => { return(BingMapTileSystem.LatLngToPixelXY(ptll, MapCore.Level)); }));
foreach (PointInt pt in positions)
{
drawingContext.DrawEllipse(Brushes.Black, new Pen(),
new Point((pt.X - viewarea.Area.X) * zoomRate, (pt.Y - viewarea.Area.Y) * zoomRate), radius, radius);
}
base.Draw(drawingContext, viewarea, zoomRate);
}
public override void Draw(DrawingContext drawingContext, MapArea viewarea, double zoomRate)
{
int height = viewarea.Area.Height;
int width = viewarea.Area.Width;
if (height == 0 || width == 0)
{
return;
}
if (MapCore.IsDragging)
{
return;
}
positions = collector.ToList().ConvertAll <PointInt>(
new Converter <PointLatLng, PointInt>(ptll => { return(BingMapTileSystem.LatLngToPixelXY(ptll, MapCore.Level)); }));
DrawingVisual visual = new DrawingVisual();
DrawingContext dc = visual.RenderOpen();
for (int i = 0; i < positions.Count; i++)
{
dc.DrawEllipse(HeatMapHelper.CreateBrush((byte)Density, GradientStop), null,
new Point(positions[i].X - viewarea.Area.X, positions[i].Y - viewarea.Area.Y), CircleRadius, CircleRadius);
}
dc.Close();
RenderTargetBitmap rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Pbgra32);
rtb.Render(visual);
WriteableBitmap bmp = new WriteableBitmap(rtb);
bmp.Lock();
for (int i = 0; i < bmp.PixelHeight; i++)
{
for (int j = 0; j < bmp.PixelWidth; j++)
{
bmp.SetPixelWithoutLock(i, j, palette);
}
}
bmp.AddDirtyRect(new Int32Rect(0, 0, bmp.PixelWidth, bmp.PixelHeight));
bmp.Unlock();
image.Source = bmp;
image.Width = viewarea.Area.Width * zoomRate;
image.Height = viewarea.Area.Height * zoomRate;
base.Draw(drawingContext, viewarea, zoomRate);
}
public override void Draw(DrawingContext drawingContext, MapArea viewarea, double zoomRate)
{
List <PointInt> positions = collector.ToList().ConvertAll <PointInt>(
new Converter <PointLatLng, PointInt>(ptll => { return(BingMapTileSystem.LatLngToPixelXY(ptll, MapCore.Level)); }));
for (int i = 0; i < positions.Count; i++)
{
drawingContext.DrawEllipse(Brushes.Black, new Pen(),
new Point((positions[i].X - viewarea.Area.X) * zoomRate, (positions[i].Y - viewarea.Area.Y) * zoomRate), radius, radius);
if (i == 0)
{
continue;
}
drawingContext.DrawLine(new Pen(Brushes.Blue, 2),
new Point((positions[i - 1].X - viewarea.Area.X) * zoomRate, (positions[i - 1].Y - viewarea.Area.Y) * zoomRate),
new Point((positions[i].X - viewarea.Area.X) * zoomRate, (positions[i].Y - viewarea.Area.Y) * zoomRate));
}
base.Draw(drawingContext, viewarea, zoomRate);
}
