static void UpdateFootprintMapLayer(Mode mode, PlatformState state, OverlayShapeMapLayer mapLayer)
{
mapLayer.Clear();
var initialGeo = state.PlatformLocation.Location;
var footprintArcStartBearing = state.PlatformLocation.Course + mode.RelativeBeamAngle - (Math.Abs(mode.HorizontalBeamWidth / 2));
var footprintArcEndBearing = state.PlatformLocation.Course + mode.RelativeBeamAngle + (Math.Abs(mode.HorizontalBeamWidth / 2));
var geos = new List<Geo>();
if (mode.HorizontalBeamWidth < 360) geos.Add(initialGeo);
for (var arcPointBearing = footprintArcStartBearing; arcPointBearing < footprintArcEndBearing; arcPointBearing++) geos.Add(initialGeo.Offset(Geo.MetersToRadians(mode.MaxPropagationRadius), Geo.DegreesToRadians(arcPointBearing)));
geos.Add(initialGeo.Offset(Geo.MetersToRadians(mode.MaxPropagationRadius), Geo.DegreesToRadians(footprintArcEndBearing)));
geos.Add(mode.HorizontalBeamWidth < 360 ? initialGeo : initialGeo.Offset(Geo.MetersToRadians(mode.MaxPropagationRadius), Geo.DegreesToRadians(footprintArcStartBearing)));
mapLayer.AddPolygon(geos);
mapLayer.Done();
}
static List<OverlayShapeMapLayer> CreateFootprintMapLayers(Platform platform, PlatformState state)
{
var result = new List<OverlayShapeMapLayer>();
foreach (var mode in from source in platform.Sources
from mode in source.Modes
orderby mode.ModeID
select mode)
{
var mapLayer = new OverlayShapeMapLayer
{
Name = string.Format("{0}-footprint", mode.Guid),
LineColor = Colors.Red,
AreaColor = Color.FromArgb(64, 255, 0, 0),
LineWidth = 2f,
};
UpdateFootprintMapLayer(mode, state, mapLayer);
result.Add(mapLayer);
}
return result;
}