public override void Paint(IGraphics graphics, IMapViewport viewport)
{
object state = graphics.SaveState();
graphics.ChangeSmoothingMode(SmoothingMode.AntiAlias);
MapVisualElementInfo info = this.GetVisualElementInfo(viewport);
GraphicsPath path = info.Path.Clone() as GraphicsPath;
GraphicsPath dotPath = new GraphicsPath();
long mapSize = MapTileSystemHelper.MapSize(viewport.ZoomLevel);
Matrix matrixOffset = new Matrix();
matrixOffset.Translate(viewport.PanOffset.Width + info.Offset.X, viewport.PanOffset.Height + info.Offset.Y);
path.Transform(matrixOffset);
Matrix matrixWraparound = new Matrix();
matrixWraparound.Translate(mapSize, 0);
for (int i = 0; i < viewport.NumberOfWraparounds; i++)
{
RectangleF bounds = path.GetBounds();
float diameter = bounds.Width / 3F;
dotPath.AddEllipse(bounds.X + diameter, bounds.Y + diameter, diameter, diameter);
graphics.FillPath(this.BorderColor, dotPath);
//draw the image
Point imageLocation = new Point((int)bounds.Location.X + (int)bounds.Width / 2 - this.image.Width / 2, (int)bounds.Location.Y);
graphics.DrawImage(imageLocation, this.Image, true);
path.Transform(matrixWraparound);
}
graphics.RestoreState(state);
}
public override void ViewportChanged(IMapViewport viewport, ViewportChangeAction action)
{
if (this.Image == null)
{
base.ViewportChanged(viewport, action);
return;
}
long mapSize = MapTileSystemHelper.MapSize(viewport.ZoomLevel);
if ((action & ViewportChangeAction.Zoom) != 0)
{
this.pixelLocation = MapTileSystemHelper.LatLongToPixelXY(this.Location, viewport.ZoomLevel);
}
if ((action & ViewportChangeAction.Pan) != 0)
{
this.drawRect = new RectangleL(pixelLocation.X - this.Image.Size.Width / 2, pixelLocation.Y - this.Image.Size.Height, this.Image.Size.Width, this.Image.Size.Height);
}
RectangleL wraparoundDrawRect = this.drawRect;
for (int i = 0; i <= viewport.NumberOfWraparounds; i++)
{
if (wraparoundDrawRect.IntersectsWith(viewport.ViewportInPixels))
{
this.isImageInViewPort = true;
break;
}
wraparoundDrawRect.Offset(mapSize, 0L);
}
if (!this.IsInViewport)
{
return;
}
}
public override void Paint(IGraphics graphics, IMapViewport viewport)
{
if (this.Image == null)
{
base.Paint(graphics, viewport);
return;
}
object state = graphics.SaveState();
graphics.TranslateTransform(drawRect.X, drawRect.Y);
Graphics g = graphics.UnderlayGraphics as Graphics;
long mapSize = MapTileSystemHelper.MapSize(viewport.ZoomLevel);
for (int i = -1; i <= viewport.NumberOfWraparounds; i++)
{
g.DrawImage(this.Image, new RectangleF(i * mapSize, 0, this.Image.Size.Width, this.Image.Size.Height));
}
graphics.RestoreState(state);
}