| | | 1 | | using System; |
| | | 2 | | using System.Collections; |
| | | 3 | | using System.Collections.Generic; |
| | | 4 | | using System.Linq; |
| | | 5 | | using Itinero.Geo.Directions; |
| | | 6 | | using Itinero.Network.Attributes; |
| | | 7 | | |
| | | 8 | | namespace Itinero.Routes; |
| | | 9 | | |
| | | 10 | | /// <summary> |
| | | 11 | | /// A route is the result of routeplanning and represents how a vehicle might travel over the routing graph. |
| | | 12 | | /// Apart from the coordinates, it has metadata about stops, branches and the segments |
| | | 13 | | /// </summary> |
| | | 14 | | public partial class Route : IEnumerable<RoutePosition> |
| | | 15 | | { |
| | | 16 | | /// <summary> |
| | | 17 | | /// The geometry of the route, including startpoint, endpoint and (if present) intermediate waypoints |
| | | 18 | | /// </summary> |
| | | 19 | | public List<(double longitude, double latitude, float? e)> Shape { get; set; } = new(); |
| | | 20 | | |
| | | 21 | | /// <summary> |
| | | 22 | | /// Metadata about the entire route; might contain total length, total duration, the vehicle profile the route has b |
| | | 23 | | /// </summary> |
| | | 24 | | public IEnumerable<(string key, string value)> Attributes { get; set; } = |
| | | 25 | | ArraySegment<(string key, string value)>.Empty; |
| | | 26 | | |
| | | 27 | | /// <summary> |
| | | 28 | | /// Metadata about the Stops, such as departure point, arrival point and intermediate destinations |
| | | 29 | | /// </summary> |
| | | 30 | | public List<Stop> Stops { get; set; } = new(); |
| | | 31 | | |
| | | 32 | | /// <summary> |
| | | 33 | | /// Metadata about individual segments. |
| | | 34 | | /// <remarks> |
| | | 35 | | /// ShapeMetaObject at `this.ShapeMeta[i]` describes the segment up to (and including) `this.Shape[this.ShapeMeta[i] |
| | | 36 | | /// </remarks> |
| | | 37 | | /// </summary> |
| | | 38 | | public List<Meta> ShapeMeta { get; set; } = new(); |
| | | 39 | | |
| | | 40 | | /// <summary> |
| | | 41 | | /// A stop is the coordinate where the traveller would like to start, to end or has an intermediate destination. |
| | | 42 | | /// <remarks> |
| | | 43 | | /// In general, this is the coordinate of the point not yet matched to the road network, but it has a certain distan |
| | | 44 | | /// </remarks> |
| | | 45 | | /// </summary> |
| | | 46 | | public class Stop |
| | | 47 | | { |
| | | 48 | | /// <summary> |
| | | 49 | | /// The shape index of the closes point in the route |
| | | 50 | | /// </summary> |
| | | 51 | | /// <remarks> |
| | | 52 | | /// This will generally be either '0' or 'route.Coordinates.Length - 1', for the start- and end-positions respec |
| | | 53 | | /// </remarks> |
| | | 54 | | public int Shape { get; set; } |
| | | 55 | | |
| | | 56 | | /// <summary> |
| | | 57 | | /// The coordinates of the actual point |
| | | 58 | | /// </summary> |
| | | 59 | | public (double longitude, double latitude, float? e) Coordinate { get; set; } |
| | | 60 | | |
| | | 61 | | /// <summary> |
| | | 62 | | /// Meta information about the point |
| | | 63 | | /// </summary> |
| | | 64 | | public IEnumerable<(string key, string value)> Attributes { get; set; } = |
| | | 65 | | ArraySegment<(string key, string value)>.Empty; |
| | | 66 | | |
| | | 67 | | /// <summary> |
| | | 68 | | /// Creates a clone. |
| | | 69 | | /// </summary> |
| | | 70 | | /// <returns></returns> |
| | | 71 | | public Stop Clone() |
| | | 72 | | { |
| | | 73 | | var attributes = new List<(string key, string value)>(this.Attributes); |
| | | 74 | | |
| | | 75 | | return new Stop |
| | | 76 | | { |
| | | 77 | | Attributes = attributes, |
| | | 78 | | Shape = this.Shape, |
| | | 79 | | Coordinate = this.Coordinate, |
| | | 80 | | Distance = this.Distance, |
| | | 81 | | Time = this.Time |
| | | 82 | | }; |
| | | 83 | | } |
| | | 84 | | |
| | | 85 | | /// <summary> |
| | | 86 | | /// The distance (in meter) travelled along the route when reaching this stop. |
| | | 87 | | /// </summary> |
| | | 88 | | public double Distance { get; set; } |
| | | 89 | | |
| | | 90 | | /// <summary> |
| | | 91 | | /// The time (in seconds) travelled along the route when reaching this stop |
| | | 92 | | /// </summary> |
| | | 93 | | public double Time { get; set; } |
| | | 94 | | |
| | | 95 | | /// <inheritdoc/> |
| | | 96 | | public override string ToString() |
| | | 97 | | { |
| | | 98 | | return $"{this.Attributes}@{this.Coordinate} ({this.Distance}m {this.Time}s)"; |
| | | 99 | | } |
| | | 100 | | } |
| | | 101 | | |
| | | 102 | | /// <summary> |
| | | 103 | | /// Represents meta-data about a part of this route. |
| | | 104 | | /// </summary> |
| | | 105 | | public class Meta |
| | | 106 | | { |
| | | 107 | | /// <summary> |
| | | 108 | | /// The index of the last Shape where this Meta-information is valid |
| | | 109 | | /// </summary> |
| | | 110 | | /// <remarks> |
| | | 111 | | /// A route has a list of coordinates named 'Shape'. |
| | | 112 | | /// This meta-object gives information about a part of the route, |
| | | 113 | | /// namely from the previous shapeMeta till 'Shape' (shape is included) |
| | | 114 | | /// </remarks> |
| | | 115 | | public int Shape { get; set; } |
| | | 116 | | |
| | | 117 | | /// <summary> |
| | | 118 | | /// The attributes of the described segment from the underlying datasource. |
| | | 119 | | /// </summary> |
| | | 120 | | /// <remarks> |
| | | 121 | | /// These are thus the OpenStreetMap-tags (if the underlying data source is OSM) |
| | | 122 | | /// </remarks> |
| | | 123 | | public IEnumerable<(string key, string value)> Attributes { get; set; } = ArraySegment<(string key, string value |
| | | 124 | | |
| | | 125 | | /// <summary> |
| | | 126 | | /// Gets or sets the relative direction flag of the attributes. |
| | | 127 | | /// </summary> |
| | | 128 | | /// <remarks> |
| | | 129 | | /// One can travel in two directions over an edge; forward and backward. |
| | | 130 | | /// The attributes however are always defined in the forward direction of the edge. |
| | | 131 | | /// If this flag is false, some attributes (such as oneway) might have to be interpreted differently |
| | | 132 | | /// </remarks> |
| | | 133 | | public bool AttributesAreForward { get; set; } |
| | | 134 | | |
| | | 135 | | /// <summary> |
| | | 136 | | /// The name of the profile used for route planning this segment. |
| | | 137 | | /// </summary> |
| | | 138 | | /// <remarks>In most cases, this will always be identical for the entire route, but might be different for diffe |
| | | 139 | | public string Profile { get; set; } = string.Empty; |
| | | 140 | | |
| | | 141 | | /// <summary> |
| | | 142 | | /// Creates a clone of this meta-object. |
| | | 143 | | /// </summary> |
| | | 144 | | /// <returns></returns> |
| | | 145 | | public Meta Clone() |
| | | 146 | | { |
| | | 147 | | var attributes = new List<(string key, string value)>(this.Attributes); |
| | | 148 | | |
| | | 149 | | return new Meta |
| | | 150 | | { |
| | | 151 | | Attributes = attributes, |
| | | 152 | | Shape = this.Shape, |
| | | 153 | | Distance = this.Distance, |
| | | 154 | | Time = this.Time, |
| | | 155 | | Profile = this.Profile |
| | | 156 | | }; |
| | | 157 | | } |
| | | 158 | | |
| | | 159 | | /// <summary> |
| | | 160 | | /// The length of the described segment in meter |
| | | 161 | | /// </summary> |
| | | 162 | | public double Distance { get; set; } |
| | | 163 | | |
| | | 164 | | /// <summary> |
| | | 165 | | /// The time needed to travel over this segment in seconds. |
| | | 166 | | /// The speed on this segment can be calculated by using this.Distance/this.Time |
| | | 167 | | /// </summary> |
| | | 168 | | public double Time { get; set; } |
| | | 169 | | } |
| | | 170 | | |
| | | 171 | | /// <summary> |
| | | 172 | | /// The list of other edges (intersections) where the traveller passes by. |
| | | 173 | | /// <remarks> |
| | | 174 | | ///See <see cref="Branch"/> for more information |
| | | 175 | | /// </remarks> |
| | | 176 | | /// </summary> |
| | | 177 | | public Branch[] Branches { get; set; } = Array.Empty<Branch>(); |
| | | 178 | | |
| | | 179 | | /// <summary> |
| | | 180 | | /// A branch is an edge which the traveller passes by when following the route. |
| | | 181 | | /// <remarks> |
| | | 182 | | /// These are thus roads "branching" from the main route, e.g. in intersections, crossed streets, ... |
| | | 183 | | /// </remarks> |
| | | 184 | | /// </summary> |
| | | 185 | | public class Branch |
| | | 186 | | { |
| | | 187 | | /// <summary> |
| | | 188 | | /// The index of the coordinate where this branch branches of |
| | | 189 | | /// </summary> |
| | | 190 | | public int Shape { get; set; } |
| | | 191 | | |
| | | 192 | | /// <summary> |
| | | 193 | | /// The end-coordinate of the branch. |
| | | 194 | | /// </summary> |
| | | 195 | | /// /// <remarks> |
| | | 196 | | /// The start-coordinate of the branch can be obtained with route.Shape[this.Shape] |
| | | 197 | | /// </remarks> |
| | | 198 | | public (double longitude, double latitude, float? e) Coordinate { get; set; } |
| | | 199 | | |
| | | 200 | | /// <summary> |
| | | 201 | | /// The attributes of the branch as fetched from the underlying data source |
| | | 202 | | /// </summary> |
| | | 203 | | public IEnumerable<(string key, string value)> Attributes { get; set; } = ArraySegment<(string key, string value |
| | | 204 | | |
| | | 205 | | /// <summary> |
| | | 206 | | /// If walking from the route onto the branch, the attributes are interpreted in a forward manner if this flag i |
| | | 207 | | /// </summary> |
| | | 208 | | public bool AttributesAreForward { get; set; } |
| | | 209 | | |
| | | 210 | | /// <summary> |
| | | 211 | | /// Creates a clone of this object. |
| | | 212 | | /// </summary> |
| | | 213 | | public Branch Clone() |
| | | 214 | | { |
| | | 215 | | var attributes = new List<(string key, string value)>(this.Attributes); |
| | | 216 | | |
| | | 217 | | return new Branch { Attributes = attributes, Shape = this.Shape, Coordinate = this.Coordinate }; |
| | | 218 | | } |
| | | 219 | | } |
| | | 220 | | |
| | | 221 | | /// <summary> |
| | | 222 | | /// The distance in hectometer. |
| | | 223 | | /// </summary> |
| | | 224 | | public double TotalDistance { get; set; } |
| | | 225 | | |
| | | 226 | | /// <summary> |
| | | 227 | | /// The time in hecto seconds. |
| | | 228 | | /// </summary> |
| | | 229 | | public double TotalTime { get; set; } |
| | | 230 | | |
| | | 231 | | /// <summary> |
| | | 232 | | /// Gets or sets the profile. |
| | | 233 | | /// </summary> |
| | | 234 | | public string Profile { get; set; } = string.Empty; |
| | | 235 | | |
| | | 236 | | /// <summary> |
| | | 237 | | /// Gets the enumerator. |
| | | 238 | | /// </summary> |
| | | 239 | | /// <returns></returns> |
| | | 240 | | public IEnumerator<RoutePosition> GetEnumerator() |
| | | 241 | | { |
| | | 242 | | return new RouteEnumerator(this); |
| | | 243 | | } |
| | | 244 | | |
| | | 245 | | /// <summary> |
| | | 246 | | /// Gets the enumerator. |
| | | 247 | | /// </summary> |
| | | 248 | | /// <returns></returns> |
| | | 249 | | IEnumerator IEnumerable.GetEnumerator() |
| | | 250 | | { |
| | | 251 | | return new RouteEnumerator(this); |
| | | 252 | | } |
| | | 253 | | } |
| | | 254 | | |
| | | 255 | | /// <summary> |
| | | 256 | | /// Represents a route enumerator. |
| | | 257 | | /// </summary> |
| | | 258 | | internal class RouteEnumerator : IEnumerator<RoutePosition> |
| | | 259 | | { |
| | | 260 | | private readonly Route _route; |
| | | 261 | | |
| | | 262 | | /// <summary> |
| | | 263 | | /// Creates a new route enumerator. |
| | | 264 | | /// </summary> |
| | | 265 | | internal RouteEnumerator(Route route) |
| | | 266 | | { |
| | | 267 | | _route = route; |
| | | 268 | | } |
| | | 269 | | |
| | | 270 | | private RoutePosition _current; |
| | | 271 | | |
| | | 272 | | /// <summary> |
| | | 273 | | /// Resets this enumerator. |
| | | 274 | | /// </summary> |
| | | 275 | | public void Reset() |
| | | 276 | | { |
| | | 277 | | _current = new RoutePosition(_route, |
| | | 278 | | -1, -1, -1, -1); |
| | | 279 | | } |
| | | 280 | | |
| | | 281 | | /// <summary> |
| | | 282 | | /// Returns the current object. |
| | | 283 | | /// </summary> |
| | | 284 | | public RoutePosition Current => _current; |
| | | 285 | | |
| | | 286 | | /// <summary> |
| | | 287 | | /// Returns the current object. |
| | | 288 | | /// </summary> |
| | | 289 | | object IEnumerator.Current => _current; |
| | | 290 | | |
| | | 291 | | /// <summary> |
| | | 292 | | /// Move next. |
| | | 293 | | /// </summary> |
| | | 294 | | public bool MoveNext() |
| | | 295 | | { |
| | | 296 | | if (_current.Route == null) |
| | | 297 | | { |
| | | 298 | | this.Reset(); |
| | | 299 | | } |
| | | 300 | | |
| | | 301 | | return _current.MoveNext(); |
| | | 302 | | } |
| | | 303 | | |
| | | 304 | | /// <summary> |
| | | 305 | | /// Disposes native resources associated with this enumerator. |
| | | 306 | | /// </summary> |
| | | 307 | | public void Dispose() { } |
| | | 308 | | } |
| | | 309 | | |
| | | 310 | | /// <summary> |
| | | 311 | | /// Abstract representation of a route position. |
| | | 312 | | /// </summary> |
| | | 313 | | public struct RoutePosition |
| | | 314 | | { |
| | | 315 | | /// <summary> |
| | | 316 | | /// Creates a new route position. |
| | | 317 | | /// </summary> |
| | | 318 | | public RoutePosition(Route route, int shape, int stopIndex, |
| | | 319 | | int metaIndex, int branchIndex) |
| | | 320 | | { |
| | | 321 | | this.Route = route; |
| | | 322 | | this.Shape = shape; |
| | | 323 | | this.StopIndex = stopIndex; |
| | | 324 | | this.MetaIndex = metaIndex; |
| | | 325 | | this.BranchIndex = branchIndex; |
| | | 326 | | } |
| | | 327 | | |
| | | 328 | | /// <summary> |
| | | 329 | | /// Gets the route. |
| | | 330 | | /// </summary> |
| | | 331 | | public Route Route { get; private set; } |
| | | 332 | | |
| | | 333 | | /// <summary> |
| | | 334 | | /// Gets the shape index. |
| | | 335 | | /// </summary> |
| | | 336 | | public int Shape { get; private set; } |
| | | 337 | | |
| | | 338 | | /// <summary> |
| | | 339 | | /// Gets the stop index. |
| | | 340 | | /// </summary> |
| | | 341 | | public int StopIndex { get; private set; } |
| | | 342 | | |
| | | 343 | | /// <summary> |
| | | 344 | | /// Gets the meta index. |
| | | 345 | | /// </summary> |
| | | 346 | | public int MetaIndex { get; private set; } |
| | | 347 | | |
| | | 348 | | /// <summary> |
| | | 349 | | /// Gets the branch index. |
| | | 350 | | /// </summary> |
| | | 351 | | public int BranchIndex { get; private set; } |
| | | 352 | | |
| | | 353 | | /// <summary> |
| | | 354 | | /// Move to the next position. |
| | | 355 | | /// </summary> |
| | | 356 | | public bool MoveNext() |
| | | 357 | | { |
| | | 358 | | this.Shape++; |
| | | 359 | | if (this.Route.Shape == null || |
| | | 360 | | this.Shape >= this.Route.Shape.Count) |
| | | 361 | | { |
| | | 362 | | return false; |
| | | 363 | | } |
| | | 364 | | |
| | | 365 | | if (this.Route.Stops != null) |
| | | 366 | | { |
| | | 367 | | if (this.StopIndex == -1) |
| | | 368 | | { |
| | | 369 | | this.StopIndex = 0; |
| | | 370 | | } |
| | | 371 | | else |
| | | 372 | | { |
| | | 373 | | while (this.StopIndex < this.Route.Stops.Count && |
| | | 374 | | this.Route.Stops[this.StopIndex].Shape < this.Shape) |
| | | 375 | | { |
| | | 376 | | this.StopIndex++; |
| | | 377 | | } |
| | | 378 | | } |
| | | 379 | | } |
| | | 380 | | |
| | | 381 | | if (this.Route.ShapeMeta != null) |
| | | 382 | | { |
| | | 383 | | if (this.MetaIndex == -1) |
| | | 384 | | { |
| | | 385 | | this.MetaIndex = 0; |
| | | 386 | | } |
| | | 387 | | else |
| | | 388 | | { |
| | | 389 | | while (this.MetaIndex < this.Route.ShapeMeta.Count && |
| | | 390 | | this.Route.ShapeMeta[this.MetaIndex].Shape < this.Shape) |
| | | 391 | | { |
| | | 392 | | this.MetaIndex++; |
| | | 393 | | } |
| | | 394 | | } |
| | | 395 | | } |
| | | 396 | | |
| | | 397 | | if (this.Route.Branches != null) |
| | | 398 | | { |
| | | 399 | | if (this.BranchIndex == -1) |
| | | 400 | | { |
| | | 401 | | this.BranchIndex = 0; |
| | | 402 | | } |
| | | 403 | | else |
| | | 404 | | { |
| | | 405 | | while (this.BranchIndex < this.Route.Branches.Length && |
| | | 406 | | this.Route.Branches[this.BranchIndex].Shape < this.Shape) |
| | | 407 | | { |
| | | 408 | | this.BranchIndex++; |
| | | 409 | | } |
| | | 410 | | } |
| | | 411 | | } |
| | | 412 | | |
| | | 413 | | return true; |
| | | 414 | | } |
| | | 415 | | |
| | | 416 | | /// <summary> |
| | | 417 | | /// Move to the next position. |
| | | 418 | | /// </summary> |
| | | 419 | | public bool MovePrevious() |
| | | 420 | | { |
| | | 421 | | this.Shape--; |
| | | 422 | | if (this.Route.Shape == null || |
| | | 423 | | this.Shape < 0 || |
| | | 424 | | this.Shape >= this.Route.Shape.Count) |
| | | 425 | | { |
| | | 426 | | return false; |
| | | 427 | | } |
| | | 428 | | |
| | | 429 | | while (this.Route.Stops != null && |
| | | 430 | | this.StopIndex > 0 && |
| | | 431 | | this.StopIndex < this.Route.Stops.Count && |
| | | 432 | | this.Route.Stops[this.StopIndex].Shape > this.Shape) |
| | | 433 | | { |
| | | 434 | | this.StopIndex--; |
| | | 435 | | } |
| | | 436 | | |
| | | 437 | | while (this.Route.ShapeMeta != null && |
| | | 438 | | this.MetaIndex > 0 && |
| | | 439 | | this.MetaIndex < this.Route.ShapeMeta.Count && |
| | | 440 | | this.Route.ShapeMeta[this.MetaIndex].Shape > this.Shape) |
| | | 441 | | { |
| | | 442 | | this.MetaIndex--; |
| | | 443 | | } |
| | | 444 | | |
| | | 445 | | while (this.Route.Branches != null && |
| | | 446 | | this.BranchIndex > 0 && |
| | | 447 | | this.BranchIndex < this.Route.Branches.Length && |
| | | 448 | | this.Route.Branches[this.BranchIndex].Shape > this.Shape) |
| | | 449 | | { |
| | | 450 | | this.BranchIndex--; |
| | | 451 | | } |
| | | 452 | | |
| | | 453 | | return true; |
| | | 454 | | } |
| | | 455 | | } |
| | | 456 | | |
| | | 457 | | /// <summary> |
| | | 458 | | /// Extension methods for the IRoutePosition-interface. |
| | | 459 | | /// </summary> |
| | | 460 | | public static class IRoutePositionExtensions |
| | | 461 | | { |
| | | 462 | | /// <summary> |
| | | 463 | | /// Returns true if this position has stops. |
| | | 464 | | /// </summary> |
| | | 465 | | public static bool HasStops(this RoutePosition position) |
| | 0 | 466 | | { |
| | 0 | 467 | | return position.Route.Stops != null && |
| | 0 | 468 | | position.Route.Stops.Count > position.StopIndex && |
| | 0 | 469 | | position.Route.Stops[position.StopIndex].Shape == position.Shape; |
| | 0 | 470 | | } |
| | | 471 | | |
| | | 472 | | /// <summary> |
| | | 473 | | /// Returns the stops at this position. |
| | | 474 | | /// </summary> |
| | | 475 | | public static IEnumerable<Route.Stop> Stops(this RoutePosition position) |
| | 0 | 476 | | { |
| | 0 | 477 | | throw new NotImplementedException(); |
| | | 478 | | } |
| | | 479 | | |
| | | 480 | | /// <summary> |
| | | 481 | | /// Returns true if this position has branches. |
| | | 482 | | /// </summary> |
| | | 483 | | public static bool HasBranches(this RoutePosition position) |
| | 0 | 484 | | { |
| | 0 | 485 | | return position.Route.Branches != null && |
| | 0 | 486 | | position.Route.Branches.Length > position.BranchIndex && |
| | 0 | 487 | | position.Route.Branches[position.BranchIndex].Shape == position.Shape; |
| | 0 | 488 | | } |
| | | 489 | | |
| | | 490 | | /// <summary> |
| | | 491 | | /// Returns the branches at this position. |
| | | 492 | | /// </summary> |
| | | 493 | | public static IEnumerable<Route.Branch> Branches(this RoutePosition position) |
| | 0 | 494 | | { |
| | 0 | 495 | | var branches = new List<Route.Branch>(); |
| | 0 | 496 | | if (position.Route.Branches != null && |
| | 0 | 497 | | position.Route.Branches.Length > position.BranchIndex && |
| | 0 | 498 | | position.Route.Branches[position.BranchIndex].Shape == position.Shape) |
| | 0 | 499 | | { |
| | 0 | 500 | | var branchIndex = position.BranchIndex; |
| | 0 | 501 | | while (position.Route.Branches.Length > branchIndex && |
| | 0 | 502 | | position.Route.Branches[branchIndex].Shape == position.Shape) |
| | 0 | 503 | | { |
| | 0 | 504 | | branches.Add(position.Route.Branches[branchIndex]); |
| | 0 | 505 | | branchIndex++; |
| | 0 | 506 | | } |
| | 0 | 507 | | } |
| | | 508 | | |
| | 0 | 509 | | return branches; |
| | 0 | 510 | | } |
| | | 511 | | |
| | | 512 | | /// <summary> |
| | | 513 | | /// Returns true if this position has current meta. |
| | | 514 | | /// </summary> |
| | | 515 | | public static bool HasCurrentMeta(this RoutePosition position) |
| | 0 | 516 | | { |
| | 0 | 517 | | return position.Route.ShapeMeta != null && |
| | 0 | 518 | | position.Route.ShapeMeta.Count > position.MetaIndex && |
| | 0 | 519 | | position.Route.ShapeMeta[position.MetaIndex].Shape == position.Shape; |
| | 0 | 520 | | } |
| | | 521 | | |
| | | 522 | | /// <summary> |
| | | 523 | | /// Returns the current meta. |
| | | 524 | | /// </summary> |
| | | 525 | | public static Route.Meta? CurrentMeta(this RoutePosition position) |
| | 0 | 526 | | { |
| | 0 | 527 | | if (position.HasCurrentMeta()) |
| | 0 | 528 | | { |
| | 0 | 529 | | return position.Route.ShapeMeta[position.MetaIndex]; |
| | | 530 | | } |
| | | 531 | | |
| | 0 | 532 | | return null; |
| | 0 | 533 | | } |
| | | 534 | | |
| | | 535 | | /// <summary> |
| | | 536 | | /// Returns the meta that applies to this position. |
| | | 537 | | /// </summary> |
| | | 538 | | public static Route.Meta? Meta(this RoutePosition position) |
| | 0 | 539 | | { |
| | 0 | 540 | | if (position.Route.ShapeMeta != null && |
| | 0 | 541 | | position.Route.ShapeMeta.Count > position.MetaIndex) |
| | 0 | 542 | | { |
| | 0 | 543 | | return position.Route.ShapeMeta[position.MetaIndex]; |
| | | 544 | | } |
| | | 545 | | |
| | 0 | 546 | | return null; |
| | 0 | 547 | | } |
| | | 548 | | |
| | | 549 | | /// <summary> |
| | | 550 | | /// Returns true if this position is the first position. |
| | | 551 | | /// </summary> |
| | | 552 | | public static bool IsFirst(this RoutePosition position) |
| | 0 | 553 | | { |
| | 0 | 554 | | return position.Shape == 0; |
| | 0 | 555 | | } |
| | | 556 | | |
| | | 557 | | /// <summary> |
| | | 558 | | /// Returns true if this position is the last position. |
| | | 559 | | /// </summary> |
| | | 560 | | public static bool IsLast(this RoutePosition position) |
| | 0 | 561 | | { |
| | 0 | 562 | | return position.Route.Shape.Count - 1 == position.Shape; |
| | 0 | 563 | | } |
| | | 564 | | |
| | | 565 | | /// <summary> |
| | | 566 | | /// Gets the previous location. |
| | | 567 | | /// </summary> |
| | | 568 | | public static (double longitude, double latitude, float? e) PreviousLocation(this RoutePosition position) |
| | 0 | 569 | | { |
| | 0 | 570 | | return position.Route.Shape[position.Shape - 1]; |
| | 0 | 571 | | } |
| | | 572 | | |
| | | 573 | | /// <summary> |
| | | 574 | | /// Gets the next location. |
| | | 575 | | /// </summary> |
| | | 576 | | public static (double longitude, double latitude, float? e) NextLocation(this RoutePosition position) |
| | 0 | 577 | | { |
| | 0 | 578 | | return position.Route.Shape[position.Shape + 1]; |
| | 0 | 579 | | } |
| | | 580 | | |
| | | 581 | | /// <summary> |
| | | 582 | | /// Gets the location. |
| | | 583 | | /// </summary> |
| | | 584 | | public static (double longitude, double latitude, float? e) Location(this RoutePosition position) |
| | 0 | 585 | | { |
| | 0 | 586 | | return position.Route.Shape[position.Shape]; |
| | 0 | 587 | | } |
| | | 588 | | |
| | | 589 | | /// <summary> |
| | | 590 | | /// Gets the direction at this position. |
| | | 591 | | /// </summary> |
| | | 592 | | public static DirectionEnum Direction(this RoutePosition position) |
| | 0 | 593 | | { |
| | 0 | 594 | | return DirectionCalculator.Calculate(position.Location(), position.NextLocation()); |
| | 0 | 595 | | } |
| | | 596 | | |
| | | 597 | | /// <summary> |
| | | 598 | | /// Gets the meta attribute for route at the current position. |
| | | 599 | | /// </summary> |
| | | 600 | | public static string GetMetaAttribute(this RoutePosition position, string key) |
| | 0 | 601 | | { |
| | 0 | 602 | | var meta = position.Meta(); |
| | 0 | 603 | | if (meta?.Attributes == null) |
| | 0 | 604 | | { |
| | 0 | 605 | | return string.Empty; |
| | | 606 | | } |
| | | 607 | | |
| | 0 | 608 | | if (!meta.Attributes.TryGetValue(key, out var value)) |
| | 0 | 609 | | { |
| | 0 | 610 | | return string.Empty; |
| | | 611 | | } |
| | | 612 | | |
| | 0 | 613 | | return value; |
| | 0 | 614 | | } |
| | | 615 | | |
| | | 616 | | /// <summary> |
| | | 617 | | /// Returns true if the meta attribute for the route at the current position contains the given attribute. |
| | | 618 | | /// </summary> |
| | | 619 | | public static bool ContainsMetaAttribute(this RoutePosition position, string key, string value) |
| | 0 | 620 | | { |
| | 0 | 621 | | var meta = position.Meta(); |
| | 0 | 622 | | if (meta?.Attributes == null) |
| | 0 | 623 | | { |
| | 0 | 624 | | return false; |
| | | 625 | | } |
| | | 626 | | |
| | 0 | 627 | | return meta.Attributes.Contains((key, value)); |
| | 0 | 628 | | } |
| | | 629 | | |
| | | 630 | | /// <summary> |
| | | 631 | | /// Gets the next route position. |
| | | 632 | | /// </summary> |
| | | 633 | | public static RoutePosition? Next(this RoutePosition position) |
| | 0 | 634 | | { |
| | 0 | 635 | | if (position.MoveNext()) |
| | 0 | 636 | | { |
| | 0 | 637 | | return position; |
| | | 638 | | } |
| | | 639 | | |
| | 0 | 640 | | return null; |
| | 0 | 641 | | } |
| | | 642 | | |
| | | 643 | | /// <summary> |
| | | 644 | | /// Gets the previous route position. |
| | | 645 | | /// </summary> |
| | | 646 | | public static RoutePosition? Previous(this RoutePosition position) |
| | 0 | 647 | | { |
| | 0 | 648 | | if (position.MovePrevious()) |
| | 0 | 649 | | { |
| | 0 | 650 | | return position; |
| | | 651 | | } |
| | | 652 | | |
| | 0 | 653 | | return null; |
| | 0 | 654 | | } |
| | | 655 | | |
| | | 656 | | /// <summary> |
| | | 657 | | /// Gets the next position until a given stop condition is met. |
| | | 658 | | /// </summary> |
| | | 659 | | public static RoutePosition? GetNextUntil(this RoutePosition position, Func<RoutePosition, bool> stopHere) |
| | 0 | 660 | | { |
| | 0 | 661 | | var next = position.Next(); |
| | 0 | 662 | | while (next != null) |
| | 0 | 663 | | { |
| | 0 | 664 | | if (stopHere(next.Value)) |
| | 0 | 665 | | { |
| | 0 | 666 | | return next; |
| | | 667 | | } |
| | | 668 | | |
| | 0 | 669 | | next = position.Next(); |
| | 0 | 670 | | } |
| | | 671 | | |
| | 0 | 672 | | return null; |
| | 0 | 673 | | } |
| | | 674 | | |
| | | 675 | | /// <summary> |
| | | 676 | | /// Gets the previous position until a given stop condition is met. |
| | | 677 | | /// </summary> |
| | | 678 | | public static RoutePosition? GetPreviousUntil(this RoutePosition position, Func<RoutePosition, bool> stopHere) |
| | 0 | 679 | | { |
| | 0 | 680 | | var next = position.Previous(); |
| | 0 | 681 | | while (next != null) |
| | 0 | 682 | | { |
| | 0 | 683 | | if (stopHere(next.Value)) |
| | 0 | 684 | | { |
| | 0 | 685 | | return next; |
| | | 686 | | } |
| | | 687 | | |
| | 0 | 688 | | next = position.Previous(); |
| | 0 | 689 | | } |
| | | 690 | | |
| | 0 | 691 | | return null; |
| | 0 | 692 | | } |
| | | 693 | | } |