protected override void updateVisual(PolygonObject item)
{
switch (item.Polygon.Header.ShorelinesFlags)
{
case GSHHGFlag.AntarticaGround:
item.Fill = this.AntarcticaFill;
break;
case GSHHGFlag.AntarticaIce:
item.Fill = this.AntarcticaIceFrontFill;
break;
default:
item.Fill = item.Polygon.Header.IsLand ? this.LandFill : this.WaterFill;
break;
}
}
private IEnumerable <IEnumerable <PixelCoordinates> > getPoints(PolygonObject polygonObject, bool crossesLeftToRight, bool crossesRightToLeft)
{
var points = polygonObject.Polygon.Points;
if (points == null)
{
return(new IEnumerable <PixelCoordinates> [0]);
}
else if (!crossesLeftToRight && !crossesRightToLeft)
{
return(new IEnumerable <PixelCoordinates>[]
{
points.Select(point => this.Map.Projection.LatLonToPixel(new LatLonCoordinates()
{
Latitude = point.Latitude, Longitude = point.Longitude.FixCoordinate(false)
})).ToList()
});
}
else
{
var left = new PixelCoordinates[points.Length];
var right = new PixelCoordinates[points.Length];
for (int i = 0; i < points.Length; i++)
{
var point = points[i];
var rightPoint = crossesLeftToRight ? point : new LatLonCoordinates()
{
Latitude = point.Latitude, Longitude = point.Longitude + 360
};
var leftPoint = crossesRightToLeft ? point : new LatLonCoordinates()
{
Latitude = point.Latitude, Longitude = point.Longitude - 360
};
right[i] = this.Map.Projection.LatLonToPixel(rightPoint);
left[i] = this.Map.Projection.LatLonToPixel(leftPoint);
}
return(new IEnumerable <PixelCoordinates>[] { right, left });
}
}
protected virtual void updateVisual(PolygonObject item)
{
}
private void updatePoints(PolygonObject polygonObject, RedrawType redrawType, Transform transform)
{
var duplicate = false;
var boundaries = polygonObject.Polygon.Header.Boundaries;
var boundaryCenter = boundaries.Center;
if (this.Map.RotateReference)
{
boundaryCenter = this.Map.Boundaries.Center.GetNewCoordinates(boundaryCenter);
}
var crossesLeftToRight = boundaryCenter.Longitude <180 && boundaryCenter.Longitude + boundaries.LongitudeHalfSpan> this.Map.Boundaries.RightLongitude && boundaryCenter.Longitude + boundaries.LongitudeHalfSpan - 360 > -180;
var crossesRightToLeft = boundaryCenter.Longitude > -180 && boundaryCenter.Longitude - boundaries.LongitudeHalfSpan < this.Map.Boundaries.LeftLongitude && boundaryCenter.Longitude - boundaries.LongitudeHalfSpan + 360 < 180;
if (crossesLeftToRight || crossesRightToLeft)
{
duplicate = true;
}
var useTransform = true;
if (duplicate)
{
useTransform = false;
}
else if (polygonObject.PixelPoints?.Any() ?? false)
{
useTransform = false;
}
else
{
const RedrawType transformRedrawTypes = RedrawType.Translate | RedrawType.Scale | RedrawType.AnimationStepChanged | RedrawType.DisplayTypeChanged | RedrawType.Redraw;
switch (redrawType & ~transformRedrawTypes)
{
case RedrawType.None:
break;
case RedrawType.Translate:
useTransform = this.Map.Projection.CanUseTransformForTranslate;
break;
default:
useTransform = false;
break;
}
}
if (useTransform)
{
foreach (var pixelPoints in polygonObject.PixelPoints)
{
foreach (var point in pixelPoints)
{
var newPoint = transform.Transform(point);
point.X = newPoint.X;
point.Y = newPoint.Y;
}
}
}
else
{
polygonObject.PixelPoints = getPoints(polygonObject, crossesLeftToRight, crossesRightToLeft);
}
}
protected virtual void removeChild(PolygonObject item)
{
}