/// <summary>
/// Gets map extent for stop with selected radius around.
/// </summary>
/// <param name="stop">Stop to getting position.</param>
/// <param name="extentRadiusInUnits">Extent radius [units].</param>
/// <returns>Map extent for stop.</returns>
private EnvelopeN _GetExtent(Stop stop, double extentRadiusInUnits)
{
Debug.Assert(null != stop);
Debug.Assert(0 < extentRadiusInUnits);
AppGeometry.Point point = stop.MapLocation.Value;
double stopX = point.X;
double stopY = point.Y;
double extentRadius = DistCalc.GetExtentRadius(stopX, stopY, extentRadiusInUnits);
// project extent to map spatial reference
AppGeometry.Point leftTop =
new AppGeometry.Point(stopX - extentRadius, stopY + extentRadius);
AppGeometry.Point rightBottom =
new AppGeometry.Point(stopX + extentRadius, stopY - extentRadius);
int spatialRefId = _mapInfo.SpatialReference.WKID;
leftTop =
WebMercatorUtil.ProjectPointToWebMercator(leftTop, spatialRefId);
rightBottom =
WebMercatorUtil.ProjectPointToWebMercator(rightBottom, spatialRefId);
// create extent in correct projection
EnvelopeN extent = new EnvelopeN();
extent.XMin = leftTop.X;
extent.XMax = rightBottom.X;
extent.YMin = rightBottom.Y;
extent.YMax = leftTop.Y;
return(extent);
}
/// <summary>
/// Converts from map coordinates to screen.
/// </summary>
/// <param name="mapPoint">Point to conversion (in map coordinates).</param>
/// <param name="extent">Map extent.</param>
/// <param name="width">Image width.</param>
/// <param name="height">Image height.</param>
/// <returns>Converted point in screen coordinates.</returns>
private SysWindows.Point _ConvertPoint(AppGeometry.Point mapPoint,
EnvelopeN extent,
double width,
double height)
{
Debug.Assert(null != mapPoint);
Debug.Assert(null != extent);
Debug.Assert(0 < width);
Debug.Assert(0 < height);
AppGeometry.Point projectedPointFrom =
WebMercatorUtil.ProjectPointToWebMercator(mapPoint, _mapInfo.SpatialReference.WKID);
double x = width * (projectedPointFrom.X - extent.XMin) / (extent.XMax - extent.XMin);
double y =
height - height * (projectedPointFrom.Y - extent.YMin) / (extent.YMax - extent.YMin);
SysWindows.Point pointTo = new SysWindows.Point(x, y);
return(pointTo);
}
/// <summary>
/// Gets map extent for route.
/// </summary>
/// <param name="route">Route to getting points.</param>
/// <param name="sortedRouteStops">Sorted stops from route.</param>
/// <returns>Map extent for route (all points on map).</returns>
private EnvelopeN _GetExtent(Route route, IList <Stop> sortedRouteStops)
{
Debug.Assert(null != route);
Debug.Assert(null != sortedRouteStops);
int spatialRefId = _mapInfo.SpatialReference.WKID;
int startIndex = _GetStartIndex(route, sortedRouteStops);
int processCount = _GetProcessStopCount(route, sortedRouteStops);
var points = new List <AppGeometry.Point>();
bool isStartFound = false;
for (int stopIndex = startIndex; stopIndex < processCount; ++stopIndex)
{
Stop stop = sortedRouteStops[stopIndex];
// NOTE: path to first stop not showing
if (isStartFound &&
(null != stop.Path) &&
!stop.Path.IsEmpty)
{
for (int index = 0; index < stop.Path.Groups.Length; ++index)
{
AppGeometry.Point[] pointsArray = stop.Path.GetGroupPoints(index);
foreach (AppGeometry.Point point in pointsArray)
{
AppGeometry.Point pt =
WebMercatorUtil.ProjectPointToWebMercator(point, spatialRefId);
points.Add(pt);
}
}
}
if (stop.MapLocation.HasValue)
{
AppGeometry.Point location = stop.MapLocation.Value;
AppGeometry.Point loc =
WebMercatorUtil.ProjectPointToWebMercator(location, spatialRefId);
points.Add(loc);
if (!isStartFound)
{
isStartFound = true;
}
}
}
var rect = new AppGeometry.Envelope();
rect.SetEmpty();
foreach (AppGeometry.Point point in points)
{
rect.Union(point);
}
// increase extent
double heightInc = ROUTE_EXTENT_INDENT * rect.Height;
if (heightInc == 0)
{
heightInc = ROUTE_EXTENT_INDENT;
}
double widthInc = ROUTE_EXTENT_INDENT * rect.Width;
if (widthInc == 0)
{
widthInc = ROUTE_EXTENT_INDENT;
}
rect.left -= widthInc;
rect.right += widthInc;
rect.top += heightInc;
rect.bottom -= heightInc;
var extent = new EnvelopeN();
extent.XMax = rect.right;
extent.XMin = rect.left;
extent.YMax = rect.top;
extent.YMin = rect.bottom;
return(extent);
}