public void DrawPolygon(MKPolygon polygon,MKMapRect mapRect, float zoomScale, CGContext context)
{
CGPath path = this.polyPath (polygon,mapRect,zoomScale,context);
if (path != null)
{
this.ApplyFillProperties (context, zoomScale);
context.BeginPath ();
context.AddPath (path);
// CGContextAddPath(context, path);
context.DrawPath (CGPathDrawingMode.EOFill);
// CGContextDrawPath(context, kCGPathEOFill);
this.ApplyStrokeProperties (context, zoomScale);
context.BeginPath ();
// CGContextBeginPath(context);
context.AddPath (path);
// CGContextAddPath(context, path);
context.StrokePath ();
// CGContextStrokePath(context);
}
}
public CGPath polyPath(MKPolygon polygon,MKMapRect mapRect, float zoomScale, CGContext context)
{
MKMapPoint[] points = polygon.Points;
Int32 pointCount = polygon.PointCount;
Int32 i;
if (pointCount < 3)
return null;
CGPath path = new CGPath ();
PointF relativePoint = this.PointForMapPoint (points[0]);
path.MoveToPoint (relativePoint.X, relativePoint.Y);
for (i = 1; i < pointCount; i++)
{
relativePoint = this.PointForMapPoint (points[i]);
path.AddLineToPoint(relativePoint);
//path.CGPathAddLineToPoint (relativePoint.X, relativePoint.Y);
}
return path;
}
/// <summary>
/// Initializes a new instance of the <see cref="TreeWatch.iOS.ColorPolygon"/> class.
/// DrawOutlines is set to true;
/// </summary>
/// <param name="polygon">Polygon to extend</param>
public ColorPolygon(MKPolygon polygon)
{
this.Polygon = polygon;
this.DrawOutlines = true;
}
/// <summary>
/// Gets the poly path for a polygon.
/// </summary>
/// <returns>The path.</returns>
/// <param name="polygon">Polygon to get the path for.</param>
public CGPath PolyPath(MKPolygon polygon)
{
var path = new CGPath();
foreach (var item in polygon.InteriorPolygons)
{
var interiorPath = this.PolyPath(item);
path.AddPath(interiorPath);
}
var relativePoint = PointForMapPoint(polygon.Points[0]);
path.MoveToPoint(relativePoint);
foreach (var point in polygon.Points)
{
path.AddLineToPoint(this.PointForMapPoint(point));
}
return path;
}
protected override void OnDetached()
{
mapView.DidUpdateUserLocation -= DidUpdateUserLocation;
mapView.MapLoaded -= MapView_MapLoaded;
// mapView.RemoveGestureRecognizer(tapGesture);
// tapGesture.Dispose();
// tapGesture = null;
mapView = null;
behavior = null;
polygon?.Dispose();
polygon = null;
polygonRenderer?.Dispose();
polygonRenderer = null;
}
private void UpdatePolygon()
{
if(mapView?.UserLocation?.Coordinate == null)
return;
if(polygon != null)
{
mapView.RemoveOverlay(polygon);
polygon.Dispose();
}
polygon = MKPolygon.FromCoordinates(new[] {
mapView.UserLocation.Coordinate,
new CLLocationCoordinate2D(mapView.UserLocation.Coordinate.Latitude + 5, mapView.UserLocation.Coordinate.Longitude + 5),
new CLLocationCoordinate2D(mapView.UserLocation.Coordinate.Latitude - 5, mapView.UserLocation.Coordinate.Longitude + 3),
});
mapView.AddOverlay(polygon);
}
public PolygonOverlay(MKPolygon polygon)
{
_polygon = polygon;
}
public void FromPoints_Interior_Empty()
{
MKPolygon pg = MKPolygon.FromPoints(new MKMapPoint [] { }, new MKPolygon [] { });
CheckEmpty(pg);
}
public void FromPoints_Null()
{
MKPolygon.FromPoints(null);
}
public void FromCoordinates_Interior_Empty()
{
MKPolygon pg = MKPolygon.FromCoordinates(new CLLocationCoordinate2D [] { }, new MKPolygon [] { });
CheckEmpty(pg);
}
