@ngageoint/geopackage
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GeoPackage JavaScript Library
342 lines • 20.1 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
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}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.GeoPackageTileRetriever = void 0;
var tileBoundingBoxUtils_1 = require("../tileBoundingBoxUtils");
var tileCreator_1 = require("../creator/tileCreator");
var tileScalingType_1 = require("../../extension/scale/tileScalingType");
var projection_1 = require("../../projection/projection");
var projectionConstants_1 = require("../../projection/projectionConstants");
var GeoPackageTileRetriever = /** @class */ (function () {
function GeoPackageTileRetriever(tileDao, width, height) {
this.tileDao = tileDao;
this.tileDao.adjustTileMatrixLengths();
this.width = width;
this.height = height;
this.scaling = null;
}
GeoPackageTileRetriever.prototype.setScaling = function (scaling) {
this.scaling = scaling;
};
GeoPackageTileRetriever.prototype.getWebMercatorBoundingBox = function () {
if (this.setWebMercatorBoundingBox == null) {
this.setWebMercatorBoundingBox = this.tileDao.tileMatrixSet.boundingBox.projectBoundingBox(this.tileDao.projection, projectionConstants_1.ProjectionConstants.EPSG_3857);
}
return this.setWebMercatorBoundingBox;
};
/**
* Determine the web mercator bounding box from xyz and see if there is a tile for the bounding box.
* @param x
* @param y
* @param zoom
*/
GeoPackageTileRetriever.prototype.hasTile = function (x, y, zoom) {
var hasTile = false;
if (x >= 0 && y >= 0 && zoom >= 0) {
var tilesBoundingBox = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getWebMercatorBoundingBoxFromXYZ(x, y, zoom);
hasTile = this.hasTileForBoundingBox(tilesBoundingBox, projectionConstants_1.ProjectionConstants.EPSG_3857);
}
return hasTile;
};
GeoPackageTileRetriever.prototype.hasTileForBoundingBox = function (tilesBoundingBox, targetProjection) {
var projectedBoundingBox = tilesBoundingBox.projectBoundingBox(targetProjection, this.tileDao.projection);
var tileMatrices = this.getTileMatrices(projectedBoundingBox);
var hasTile = false;
for (var i = 0; !hasTile && i < tileMatrices.length; i++) {
var tileMatrix = tileMatrices[i];
var tileGrid = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getTileGridWithTotalBoundingBox(this.tileDao.tileMatrixSet.boundingBox, tileMatrix.matrix_width, tileMatrix.matrix_height, projectedBoundingBox);
hasTile = this.tileDao.countByTileGrid(tileGrid, tileMatrix.zoom_level) > 0;
}
return hasTile;
};
GeoPackageTileRetriever.prototype.getTile = function (x, y, zoom) {
return __awaiter(this, void 0, void 0, function () {
var webMercatorBoundingBox;
return __generator(this, function (_a) {
webMercatorBoundingBox = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getWebMercatorBoundingBoxFromXYZ(x, y, zoom);
return [2 /*return*/, this.getTileWithBounds(webMercatorBoundingBox, projectionConstants_1.ProjectionConstants.EPSG_3857)];
});
});
};
GeoPackageTileRetriever.prototype.getWebMercatorTile = function (x, y, zoom) {
return __awaiter(this, void 0, void 0, function () {
var webMercatorBoundingBox;
return __generator(this, function (_a) {
webMercatorBoundingBox = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getWebMercatorBoundingBoxFromXYZ(x, y, zoom);
return [2 /*return*/, this.getTileWithBounds(webMercatorBoundingBox, projectionConstants_1.ProjectionConstants.EPSG_3857)];
});
});
};
GeoPackageTileRetriever.prototype.drawTileIn = function (x, y, zoom, canvas) {
return __awaiter(this, void 0, void 0, function () {
var webMercatorBoundingBox;
return __generator(this, function (_a) {
webMercatorBoundingBox = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getWebMercatorBoundingBoxFromXYZ(x, y, zoom);
return [2 /*return*/, this.getTileWithBounds(webMercatorBoundingBox, projectionConstants_1.ProjectionConstants.EPSG_3857, canvas)];
});
});
};
GeoPackageTileRetriever.prototype.getTileWithWgs84Bounds = function (wgs84BoundingBox, canvas) {
return __awaiter(this, void 0, void 0, function () {
var webMercatorBoundingBox;
return __generator(this, function (_a) {
webMercatorBoundingBox = wgs84BoundingBox.projectBoundingBox(projectionConstants_1.ProjectionConstants.EPSG_4326, projectionConstants_1.ProjectionConstants.EPSG_3857);
return [2 /*return*/, this.getTileWithBounds(webMercatorBoundingBox, projectionConstants_1.ProjectionConstants.EPSG_3857, canvas)];
});
});
};
GeoPackageTileRetriever.prototype.getTileWithWgs84BoundsInProjection = function (wgs84BoundingBox, zoom, targetProjection, canvas) {
return __awaiter(this, void 0, void 0, function () {
var targetBoundingBox;
return __generator(this, function (_a) {
targetBoundingBox = wgs84BoundingBox.projectBoundingBox(projectionConstants_1.ProjectionConstants.EPSG_4326, targetProjection);
return [2 /*return*/, this.getTileWithBounds(targetBoundingBox, targetProjection, canvas)];
});
});
};
GeoPackageTileRetriever.prototype.getTileWithBounds = function (targetBoundingBox, targetProjection, canvas) {
return __awaiter(this, void 0, void 0, function () {
var targetProjectionDefinition, projectedBoundingBox, tileMatrices, tileFound, tile, i, tileMatrix, tileWidth, tileHeight, creator, iterator, iterator_1, iterator_1_1, tile_1, tileBoundingBox, overlap, src, dest, e_1_1;
var e_1, _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
targetProjectionDefinition = projection_1.Projection.hasProjection(targetProjection);
if (targetProjectionDefinition == null) {
throw new Error('Projection ' + targetProjection + ' is not loaded.');
}
projectedBoundingBox = targetBoundingBox.projectBoundingBox(targetProjection, this.tileDao.projection);
tileMatrices = this.getTileMatrices(projectedBoundingBox);
tileFound = false;
tile = null;
i = 0;
_b.label = 1;
case 1:
if (!(!tileFound && i < tileMatrices.length)) return [3 /*break*/, 12];
tileMatrix = tileMatrices[i];
tileWidth = tileMatrix.tile_width;
tileHeight = tileMatrix.tile_height;
return [4 /*yield*/, tileCreator_1.TileCreator.create(this.width || tileWidth, this.height || tileHeight, tileMatrix, this.tileDao.tileMatrixSet, targetBoundingBox, this.tileDao.srs, targetProjection, targetProjectionDefinition, canvas)];
case 2:
creator = _b.sent();
iterator = this.retrieveTileResults(projectedBoundingBox, tileMatrix);
_b.label = 3;
case 3:
_b.trys.push([3, 8, 9, 10]);
iterator_1 = (e_1 = void 0, __values(iterator)), iterator_1_1 = iterator_1.next();
_b.label = 4;
case 4:
if (!!iterator_1_1.done) return [3 /*break*/, 7];
tile_1 = iterator_1_1.value;
tileBoundingBox = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getTileBoundingBox(this.tileDao.tileMatrixSet.boundingBox, tileMatrix, tile_1.tileColumn, tile_1.row);
overlap = tileBoundingBoxUtils_1.TileBoundingBoxUtils.intersection(projectedBoundingBox, tileBoundingBox);
if (!(overlap != null)) return [3 /*break*/, 6];
src = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getFloatRoundedRectangle(tileMatrix.tile_width, tileMatrix.tile_height, tileBoundingBox, overlap);
dest = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getFloatRoundedRectangle(this.width, this.height, projectedBoundingBox, overlap);
if (!(src.isValid && dest.isValid)) return [3 /*break*/, 6];
return [4 /*yield*/, creator.addTile(tile_1.tileData, tile_1.tileColumn, tile_1.row)];
case 5:
_b.sent();
tileFound = true;
_b.label = 6;
case 6:
iterator_1_1 = iterator_1.next();
return [3 /*break*/, 4];
case 7: return [3 /*break*/, 10];
case 8:
e_1_1 = _b.sent();
e_1 = { error: e_1_1 };
return [3 /*break*/, 10];
case 9:
try {
if (iterator_1_1 && !iterator_1_1.done && (_a = iterator_1.return)) _a.call(iterator_1);
}
finally { if (e_1) throw e_1.error; }
return [7 /*endfinally*/];
case 10:
if (!canvas && tileFound) {
tile = creator.getCompleteTile();
}
creator.cleanup();
_b.label = 11;
case 11:
i++;
return [3 /*break*/, 1];
case 12: return [2 /*return*/, tile];
}
});
});
};
GeoPackageTileRetriever.prototype.retrieveTileResults = function (tileMatrixProjectionBoundingBox, tileMatrix) {
if (tileMatrix) {
var tileGrid = tileBoundingBoxUtils_1.TileBoundingBoxUtils.getTileGridWithTotalBoundingBox(this.tileDao.tileMatrixSet.boundingBox, tileMatrix.matrix_width, tileMatrix.matrix_height, tileMatrixProjectionBoundingBox);
return this.tileDao.queryByTileGrid(tileGrid, tileMatrix.zoom_level);
}
};
/**
* Get the tile matrices that may contain the tiles for the bounding box,
* matches against the bounding box and zoom level options
* @param projectedRequestBoundingBox bounding box projected to the tiles
* @return tile matrices
*/
GeoPackageTileRetriever.prototype.getTileMatrices = function (projectedRequestBoundingBox) {
var _this = this;
var tileMatrices = [];
// Check if the request overlaps the tile matrix set
if (this.tileDao.tileMatrices.length !== 0 &&
tileBoundingBoxUtils_1.TileBoundingBoxUtils.intersects(projectedRequestBoundingBox, this.tileDao.tileMatrixSet.boundingBox)) {
// Get the tile distance
var distanceWidth = projectedRequestBoundingBox.maxLongitude - projectedRequestBoundingBox.minLongitude;
var distanceHeight = projectedRequestBoundingBox.maxLatitude - projectedRequestBoundingBox.minLatitude;
// Get the zoom level to request based upon the tile size
var requestZoomLevel = void 0;
if (this.scaling != null) {
// When options are provided, get the approximate zoom level regardless of whether a tile level exists
requestZoomLevel = this.tileDao.getApproximateZoomLevelForWidthAndHeight(distanceWidth, distanceHeight);
}
else {
// Get the closest existing zoom level
requestZoomLevel = this.tileDao.getZoomLevelForWidthAndHeight(distanceWidth, distanceHeight);
}
// If there is a matching zoom level
if (requestZoomLevel != null) {
var zoomLevels = [];
// If options are configured, build the possible zoom levels in
// order to request
if (this.scaling != null && this.scaling.scaling_type != null) {
// Find zoom in levels
var zoomInLevels = [];
if (this.scaling.isZoomIn()) {
var zoomIn = this.scaling.zoom_in != null ? requestZoomLevel + this.scaling.zoom_in : this.tileDao.maxZoom;
for (var zoomLevel = requestZoomLevel + 1; zoomLevel <= zoomIn; zoomLevel++) {
zoomInLevels.push(zoomLevel);
}
}
// Find zoom out levels
var zoomOutLevels = [];
if (this.scaling.isZoomOut()) {
var zoomOut = this.scaling.zoom_out != null ? requestZoomLevel - this.scaling.zoom_out : this.tileDao.minZoom;
for (var zoomLevel = requestZoomLevel - 1; zoomLevel >= zoomOut; zoomLevel--) {
zoomOutLevels.push(zoomLevel);
}
}
if (zoomInLevels.length == 0) {
// Only zooming out
zoomLevels = zoomOutLevels;
}
else if (zoomOutLevels.length == 0) {
// Only zooming in
zoomLevels = zoomInLevels;
}
else {
// Determine how to order the zoom in and zoom out
// levels
var type = this.scaling.scaling_type;
switch (type) {
case tileScalingType_1.TileScalingType.IN:
case tileScalingType_1.TileScalingType.IN_OUT:
// Order zoom in levels before zoom out levels
zoomLevels = zoomInLevels.concat(zoomOutLevels);
break;
case tileScalingType_1.TileScalingType.OUT:
case tileScalingType_1.TileScalingType.OUT_IN:
// Order zoom out levels before zoom in levels
zoomLevels = zoomOutLevels.concat(zoomInLevels);
break;
case tileScalingType_1.TileScalingType.CLOSEST_IN_OUT:
case tileScalingType_1.TileScalingType.CLOSEST_OUT_IN:
// Alternate the zoom in and out levels
var firstLevels = void 0;
var secondLevels = void 0;
if (type == tileScalingType_1.TileScalingType.CLOSEST_IN_OUT) {
// Alternate starting with zoom in
firstLevels = zoomInLevels;
secondLevels = zoomOutLevels;
}
else {
// Alternate starting with zoom out
firstLevels = zoomOutLevels;
secondLevels = zoomInLevels;
}
zoomLevels = [];
var maxLevels = Math.max(firstLevels.length, secondLevels.length);
for (var i = 0; i < maxLevels; i++) {
if (i < firstLevels.length) {
zoomLevels.push(firstLevels[i]);
}
if (i < secondLevels.length) {
zoomLevels.push(secondLevels[i]);
}
}
break;
default:
throw new Error('Unsupported TileScalingType: ' + type);
}
}
}
else {
zoomLevels = [];
}
// Always check the request zoom level first
zoomLevels.unshift(requestZoomLevel);
// Build a list of tile matrices that exist for the zoom levels
zoomLevels.forEach(function (zoomLevel) {
var tileMatrix = _this.tileDao.getTileMatrixWithZoomLevel(zoomLevel);
if (tileMatrix != null) {
tileMatrices.push(tileMatrix);
}
});
}
}
return tileMatrices;
};
return GeoPackageTileRetriever;
}());
exports.GeoPackageTileRetriever = GeoPackageTileRetriever;
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