コード例 #1
0
        /// <summary>
        /// Returns a geoJson map into a heat map.
        /// </summary>
        /// <param name="geoJson">The geoJson.</param>
        /// <param name="values">The values.</param>
        /// <param name="heatMap">The heat map.</param>
        /// <param name="heatStops">The heat stops.</param>
        /// <param name="stroke">The stroke.</param>
        /// <param name="fill">The fill.</param>
        /// <param name="thickness">The thickness.</param>
        /// <param name="projector">The projector.</param>
        /// <returns></returns>
        public static IEnumerable<PathShape> AsHeatMapShapes(
            this GeoJsonFile geoJson,
            Dictionary<string, double> values,
            LvcColor[] heatMap, List<Tuple<double, LvcColor>> heatStops,
            LvcColor stroke,
            LvcColor fill,
            float thickness,
            MapProjector projector)
        {
            var paths = new List<PathShape>();

            var weightBounds = new Bounds();
            foreach (var value in values)
            {
                weightBounds.AppendValue(value.Value);
            }

            var d = new double[0][][][];

            foreach (var feature in geoJson.Features ?? new GeoJsonFeature[0])
            {
                var name = feature.Properties is not null ? feature.Properties["shortName"] : "";
                LvcColor? baseColor = values.TryGetValue(name, out var weight)
                    ? HeatFunctions.InterpolateColor((float)weight, weightBounds, heatMap, heatStops)
                    : null;

                foreach (var geometry in feature.Geometry?.Coordinates ?? d)
                {
                    foreach (var segment in geometry)
                    {
                        var path = new PathShape
                        {
                            StrokeColor = stroke,
                            FillColor = baseColor ?? fill,
                            StrokeThickness = thickness,
                            IsClosed = true
                        };
                        var isFirst = true;
                        foreach (var point in segment)
                        {
                            var p = projector.ToMap(point);

                            if (isFirst)
                            {
                                isFirst = false;
                                path.AddCommand(new MoveToPathCommand { X = p[0], Y = p[1] });
                                continue;
                            }

                            path.AddCommand(new LineSegment { X = p[0], Y = p[1] });
                        }
                        paths.Add(path);
                    }
                }
            }

            return paths;
        }
コード例 #2
0
 /// <summary>
 /// Initializes a new instance of <see cref="MapContext{TDrawingContext}"/> class.
 /// </summary>
 public MapContext(
     GeoMap <TDrawingContext> core,
     IGeoMapView <TDrawingContext> view,
     CoreMap <TDrawingContext> map,
     MapProjector projector)
 {
     CoreMap   = core;
     MapFile   = map;
     Projector = projector;
     View      = view;
 }