示例#1
0
        /// <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);
        }
示例#2
0
        /// <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);
        }