/// <summary>
/// Creates a new polygon map shape.
/// </summary>
/// <param name="metadata">The map metadata.</param>
/// <param name="bounds">The shape bounds.</param>
public MapShapePolygon(MapMetadata metadata, MapRectangle bounds)
: base(MapShapeType.Polygon, metadata)
{
this.bounds = bounds;
}
/// <summary>
/// Creates a map with the specified bounds.
/// </summary>
/// <param name="bounds">The map bounds.</param>
public Map(MapRectangle bounds)
{
this.bounds = bounds;
}
/// <summary>
/// Creates a new polygon map shape.
/// </summary>
/// <param name="bounds">The shape bounds.</param>
public MapShapePolygon(MapRectangle bounds)
: base(MapShapeType.Polygon)
{
this.bounds = bounds;
}
/// <summary>
/// Draws the item on the specified graphics object within the specified map bounds and scale.
/// </summary>
/// <param name="graphics">The graphics</param>
/// <param name="bounds">The bounds.</param>
/// <param name="scale">The scale.</param>
/// <param name="brush">The brush.</param>
/// <param name="pen">The pen.</param>
internal override void Draw(Graphics graphics, MapRectangle bounds, MapScale scale, Brush brush, Pen pen)
{
// Create a new graphics path.
using (GraphicsPath path = new GraphicsPath())
{
// Compute the marker center.
PointF center = new PointF(
(float)((this.Location.X - bounds.Left) * scale.Width),
(float)((bounds.Top - this.Location.Y) * scale.Height)
);
// Add a circle to the path.
path.AddEllipse((float)(center.X - this.Size.Width / 2.0), (float)(center.Y - this.Size.Height / 2.0), this.Size.Width, this.Size.Height);
// Fill the path.
if (null != brush) graphics.FillPath(brush, path);
// Draw the path.
if (null != pen) graphics.DrawPath(pen, path);
}
}
/// <summary>
/// Updates the map item geometric characteristics to the specified map bounds and scale.
/// </summary>
/// <param name="bounds">The map bounds.</param>
/// <param name="scale">The map scale.</param>
internal override void Update(MapRectangle bounds, MapScale scale)
{
// If the object has been disposed throw an exception.
if (this.disposed) throw new ObjectDisposedException("marker");
// Compute the marker center.
PointF center = new PointF(
(float)((this.Location.X - bounds.Left) * scale.Width),
(float)((bounds.Top - this.Location.Y) * scale.Height)
);
// Lock the current path.
lock (this.sync)
{
// Reset the graphics path.
this.path.Reset();
// Add a circle to the path.
this.path.AddEllipse((float)(center.X - this.Size.Width / 2.0), (float)(center.Y - this.Size.Height / 2.0), this.Size.Width, this.Size.Height);
// Set the region bounds.
this.bounds = this.path.GetBounds().Ceiling();
}
}
/// <summary>
/// Updates the map item geometric characteristics to the specified map bounds and scale.
/// </summary>
/// <param name="bounds">The map bounds.</param>
/// <param name="scale">The map scale.</param>
internal override void Update(MapRectangle bounds, MapScale scale)
{
// If the object has been disposed throw an exception.
if (this.disposed) throw new ObjectDisposedException("region");
lock (this.sync)
{
// Reset the graphics path.
this.path.Reset();
// For all shape parts.
for (int indexPart = 0; indexPart < shape.Parts.Count; indexPart++)
{
// Update the list of points for each part polygon.
for (int indexPoint = 0; indexPoint < shape.Parts[indexPart].Points.Count; indexPoint++)
{
this.points[indexPart][indexPoint].X = (float)((shape.Parts[indexPart].Points[indexPoint].X - bounds.Left) * scale.Width);
this.points[indexPart][indexPoint].Y = (float)((bounds.Top - shape.Parts[indexPart].Points[indexPoint].Y) * scale.Height);
}
// Add the polygon to the graphics path.
this.path.AddPolygon(this.points[indexPart]);
}
// Set the region bounds.
this.bounds = this.path.GetBounds().Ceiling();
}
}
/// <summary>
/// Draws the item on the specified graphics object within the specified map bounds and scale.
/// </summary>
/// <param name="graphics">The graphics.</param>
/// <param name="bounds">The bounds.</param>
/// <param name="scale">The scale.</param>
internal override void Draw(Graphics graphics, MapRectangle bounds, MapScale scale)
{
// Create the brush.
using (SolidBrush brush = new SolidBrush(this.BackgroundColor))
{
// Create the pen.
using (Pen pen = new Pen(this.BorderColor))
{
this.Draw(graphics, bounds, scale, brush, pen);
}
}
}
/// <summary>
/// Draws the item on the specified graphics object within the specified map bounds and scale.
/// </summary>
/// <param name="graphics">The graphics</param>
/// <param name="bounds">The bounds.</param>
/// <param name="scale">The scale.</param>
/// <param name="brush">The brush.</param>
/// <param name="pen">The pen.</param>
internal override void Draw(Graphics graphics, MapRectangle bounds, MapScale scale, Brush brush, Pen pen)
{
// Create a new graphics path.
using (GraphicsPath path = new GraphicsPath())
{
// For all shape parts.
for (int indexPart = 0; indexPart < shape.Parts.Count; indexPart++)
{
// Update the list of points for each part polygon.
for (int indexPoint = 0; indexPoint < shape.Parts[indexPart].Points.Count; indexPoint++)
{
this.points[indexPart][indexPoint].X = (float)((shape.Parts[indexPart].Points[indexPoint].X - bounds.Left) * scale.Width);
this.points[indexPart][indexPoint].Y = (float)((bounds.Top - shape.Parts[indexPart].Points[indexPoint].Y) * scale.Height);
}
// Add the polygon to the graphics path.
path.AddPolygon(this.points[indexPart]);
}
// Fill the path.
if (null != brush) graphics.FillPath(brush, path);
// Draw the path.
if (null != pen) graphics.DrawPath(pen, path);
}
}
/// <summary> /// Draws the item on the specified graphics object within the specified map bounds and scale. /// </summary> /// <param name="graphics">The graphics.</param> /// <param name="bounds">The bounds.</param> /// <param name="scale">The scale.</param> internal abstract void Draw(Graphics graphics, MapRectangle bounds, MapScale scale);
/// <summary> /// Updates the map item geometric characteristics to the specified map bounds and scale. /// </summary> /// <param name="bounds">The map bounds.</param> /// <param name="scale">The map scale.</param> internal abstract void Update(MapRectangle bounds, MapScale scale);
/// <summary> /// Draws the item on the specified graphics object within the specified map bounds and scale. /// </summary> /// <param name="graphics">The graphics</param> /// <param name="bounds">The bounds.</param> /// <param name="scale">The scale.</param> /// <param name="brush">The brush.</param> /// <param name="pen">The pen.</param> internal abstract void Draw(Graphics graphics, MapRectangle bounds, MapScale scale, Brush brush, Pen pen);
/// <summary>
/// An event handler called when the map bounds have changed.
/// </summary>
/// <param name="mapBounds">The map bounds.</param>
private void OnMapBoundsChanged(MapRectangle mapBounds)
{
// Compute the map size to use the default values in case the width and height are zero.
this.mapSize = new MapSize(
mapBounds.Width != 0 ? mapBounds.Width : MapControl.mapBoundsDefault.Width,
mapBounds.Height != 0 ? mapBounds.Height : MapControl.mapBoundsDefault.Height
);
// Compute the map bounds.
this.mapBounds = new MapRectangle(
new MapPoint(mapBounds.Left, mapBounds.Top),
this.mapSize
);
// Recompute the map scale and bitmap size.
this.OnMapSizeChanged();
// Refresh the current map.
this.OnRefreshMap();
}
