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georaster-layer-for-leaflet.browserify.min.js
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georaster-layer-for-leaflet.browserify.min.js
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(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
"use strict";
require("regenerator-runtime/runtime");
var _chromaJs = _interopRequireDefault(require("chroma-js"));
var _isUTM = _interopRequireDefault(require("utm-utils/src/isUTM"));
var _getProjString = _interopRequireDefault(require("utm-utils/src/getProjString"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
var EPSG4326 = 4326;
var PROJ4_SUPPORTED_PROJECTIONS = new Set([3857, 4269]);
var MAX_NORTHING = 1000;
var MAX_EASTING = 1000;
var ORIGIN = [0, 0];
var GeoRasterLayer = L.GridLayer.extend({
initialize: function initialize(options) {
var _this = this;
try {
if (options.georasters) {
this.georasters = options.georasters;
} else if (options.georaster) {
this.georasters = [options.georaster];
} else {
throw new Error("You initialized a GeoRasterLayer without a georaster or georasters value.");
}
/*
Unpacking values for use later.
We do this in order to increase speed.
*/
var keys = ["height", "width", "noDataValue", "palette", "pixelHeight", "pixelWidth", "projection", "sourceType", "xmin", "xmax", "ymin", "ymax"];
if (this.georasters.length > 1) {
keys.forEach(function (key) {
if (_this.same(_this.georasters, key)) {
_this[key] = _this.georasters[0][key];
} else {
throw new Error("all GeoRasters must have the same " + key);
}
});
} else if (this.georasters.length === 1) {
keys.forEach(function (key) {
_this[key] = _this.georasters[0][key];
});
} // used later if simple projection
this.ratio = this.height / this.width;
if (this.sourceType === "url") {
if (!options.updateWhenIdle) options.updateWhenIdle = false;
if (!options.updateWhenZooming) options.updateWhenZooming = true;
if (!options.keepBuffer) options.keepBuffer = 16;
}
if (!("debugLevel" in options)) options.debugLevel = 1;
if (!options.keepBuffer) options.keepBuffer = 25;
if (!options.resolution) options.resolution = Math.pow(2, 5);
if (options.updateWhenZooming === undefined) options.updateWhenZooming = false;
this.debugLevel = options.debugLevel;
if (this.debugLevel >= 1) console.log("georaster:", options);
if (this.georasters.every(function (georaster) {
return _typeof(georaster.values) === "object";
})) {
this.rasters = this.georasters.reduce(function (result, georaster) {
result = result.concat(georaster.values);
return result;
}, []);
if (this.debugLevel > 1) console.log("this.rasters:", this.rasters);
}
this.chroma = _chromaJs.default;
this.scale = _chromaJs.default.scale();
L.setOptions(this, options);
/*
Caching the constant tile size, so we don't recalculate everytime we
create a new tile
*/
var tileSize = this.getTileSize();
this.tileHeight = tileSize.y;
this.tileWidth = tileSize.x;
if (this.georasters.length > 1 && !options.pixelValuesToColorFn) {
throw "you must pass in a pixelValuesToColorFn if you are combining rasters";
}
if (this.georasters.length === 1 && this.georasters[0].sourceType === "url" && this.georasters[0].numberOfRasters === 1 && !options.pixelValuesToColorFn) {
// For COG, we can't determine a data min max for color scaling,
// so pixelValuesToColorFn is required.
throw "pixelValuesToColorFn is a required option for single-band rasters initialized via URL";
}
} catch (error) {
console.error("ERROR initializing GeoTIFFLayer", error);
}
},
getRasters: function getRasters(options) {
var _this2 = this;
var tileNwPoint = options.tileNwPoint,
heightOfSampleInScreenPixels = options.heightOfSampleInScreenPixels,
widthOfSampleInScreenPixels = options.widthOfSampleInScreenPixels,
coords = options.coords,
numberOfSamplesAcross = options.numberOfSamplesAcross,
numberOfSamplesDown = options.numberOfSamplesDown,
ymax = options.ymax,
xmin = options.xmin;
if (this.debugLevel >= 1) console.log("starting getRasters with options:", options); // called if georaster was constructed from URL and we need to get
// data separately for each tile
// aka 'COG mode'
/*
This function takes in coordinates in the rendered image tile and
returns the y and x values in the original raster
*/
var rasterCoordsForTileCoords = function rasterCoordsForTileCoords(h, w) {
var xCenterInMapPixels = tileNwPoint.x + (w + 0.5) * widthOfSampleInScreenPixels;
var yCenterInMapPixels = tileNwPoint.y + (h + 0.5) * heightOfSampleInScreenPixels;
var mapPoint = L.point(xCenterInMapPixels, yCenterInMapPixels);
if (_this2.debugLevel >= 1) console.log("mapPoint:", mapPoint);
var _this2$getMap$unproje = _this2.getMap().unproject(mapPoint, coords.z),
lat = _this2$getMap$unproje.lat,
lng = _this2$getMap$unproje.lng;
if (_this2.projection === EPSG4326) {
return {
y: Math.floor((ymax - lat) / _this2.pixelHeight),
x: Math.floor((lng - xmin) / _this2.pixelWidth)
};
} else if (_this2.getProjector()) {
/* source raster doesn't use latitude and longitude,
so need to reproject point from lat/long to projection of raster
*/
var _this2$getProjector$i = _this2.getProjector().inverse([lng, lat]),
_this2$getProjector$i2 = _slicedToArray(_this2$getProjector$i, 2),
x = _this2$getProjector$i2[0],
y = _this2$getProjector$i2[1];
if (x === Infinity || y === Infinity) {
if (_this2.debugLevel >= 1) console.error("projector converted", [lng, lat], "to", [x, y]);
}
return {
y: Math.floor((ymax - y) / _this2.pixelHeight),
x: Math.floor((x - xmin) / _this2.pixelWidth)
};
}
}; // careful not to flip min_y/max_y here
var topLeft = rasterCoordsForTileCoords(0, 0);
var bottomRight = rasterCoordsForTileCoords(numberOfSamplesDown - 1, numberOfSamplesAcross - 1);
var getValuesOptions = {
bottom: bottomRight.y,
height: numberOfSamplesDown,
left: topLeft.x,
right: bottomRight.x,
top: topLeft.y,
width: numberOfSamplesAcross
};
if (!Object.values(getValuesOptions).every(isFinite)) {
console.error("getRasters failed because not all values are finite:", getValuesOptions);
} else {
return Promise.all(this.georasters.map(function (georaster) {
return georaster.getValues(getValuesOptions);
})).then(function (valuesByGeoRaster) {
return valuesByGeoRaster.reduce(function (result, values) {
result = result.concat(values);
return result;
}, []);
});
}
},
createTile: function createTile(coords, done) {
/* This tile is the square piece of the Leaflet map that we draw on */
var tile = L.DomUtil.create("canvas", "leaflet-tile");
tile.height = this.tileHeight;
tile.width = this.tileWidth;
var context = tile.getContext("2d");
return this.drawTile({
tile: tile,
coords: coords,
context: context,
done: done
});
},
drawTile: function drawTile(_ref) {
var _this3 = this;
var tile = _ref.tile,
coords = _ref.coords,
context = _ref.context,
done = _ref.done;
var error;
var inSimpleCRS = this.getMap().options.crs === L.CRS.Simple; // Unpacking values for increased speed
var rasters = this.rasters,
xmin = this.xmin,
ymax = this.ymax;
var rasterHeight = this.height;
var rasterWidth = this.width;
var pixelHeight = inSimpleCRS ? this.getBounds()._northEast.lat / rasterHeight : this.pixelHeight;
var pixelWidth = inSimpleCRS ? this.getBounds()._northEast.lng / rasterWidth : this.pixelWidth; // these values are used, so we don't try to sample outside of the raster
var xMinOfLayer = this.xMinOfLayer,
xMaxOfLayer = this.xMaxOfLayer,
yMinOfLayer = this.yMinOfLayer,
yMaxOfLayer = this.yMaxOfLayer;
var boundsOfTile = this._tileCoordsToBounds(coords);
var xMinOfTileInMapCRS = boundsOfTile.getWest();
var xMaxOfTileInMapCRS = boundsOfTile.getEast();
var yMinOfTileInMapCRS = boundsOfTile.getSouth();
var yMaxOfTileInMapCRS = boundsOfTile.getNorth();
var rasterPixelsAcross, rasterPixelsDown;
if (inSimpleCRS || this.projection === EPSG4326) {
// width of the Leaflet tile in number of pixels from original raster
rasterPixelsAcross = Math.ceil((xMaxOfTileInMapCRS - xMinOfTileInMapCRS) / pixelWidth);
rasterPixelsDown = Math.ceil((yMaxOfTileInMapCRS - yMinOfTileInMapCRS) / pixelHeight);
} else if (this.getProjector()) {
var projector = this.getProjector(); // convert extent of Leaflet tile to projection of the georaster
var topLeft = projector.inverse({
x: xMinOfTileInMapCRS,
y: yMaxOfTileInMapCRS
});
var topRight = projector.inverse({
x: xMaxOfTileInMapCRS,
y: yMaxOfTileInMapCRS
});
var bottomLeft = projector.inverse({
x: xMinOfTileInMapCRS,
y: yMinOfTileInMapCRS
});
var bottomRight = projector.inverse({
x: xMaxOfTileInMapCRS,
y: yMinOfTileInMapCRS
});
rasterPixelsAcross = Math.ceil(Math.max(topRight.x - topLeft.x, bottomRight.x - bottomLeft.x) / pixelWidth);
rasterPixelsDown = Math.ceil(Math.max(topLeft.y - bottomLeft.y, topRight.y - bottomRight.y) / pixelHeight);
}
var resolution = this.options.resolution; // prevent sampling more times than number of pixels to display
var numberOfSamplesAcross = Math.min(resolution, rasterPixelsAcross);
var numberOfSamplesDown = Math.min(resolution, rasterPixelsDown); // set how large to display each sample in screen pixels
var heightOfSampleInScreenPixels = this.tileHeight / numberOfSamplesDown;
var heightOfSampleInScreenPixelsInt = Math.ceil(heightOfSampleInScreenPixels);
var widthOfSampleInScreenPixels = this.tileWidth / numberOfSamplesAcross;
var widthOfSampleInScreenPixelsInt = Math.ceil(widthOfSampleInScreenPixels);
var map = this.getMap();
var tileSize = this.getTileSize(); // this converts tile coordinates (how many tiles down and right)
// to pixels from left and top of tile pane
var tileNwPoint = coords.scaleBy(tileSize); // render asynchronously so tiles show up as they finish instead of all at once (which blocks the UI)
setTimeout( /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
var tileRasters, _loop, h, _ret;
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
if (rasters) {
_context.next = 4;
break;
}
_context.next = 3;
return _this3.getRasters({
tileNwPoint: tileNwPoint,
heightOfSampleInScreenPixels: heightOfSampleInScreenPixels,
widthOfSampleInScreenPixels: widthOfSampleInScreenPixels,
coords: coords,
pixelHeight: pixelHeight,
pixelWidth: pixelWidth,
numberOfSamplesAcross: numberOfSamplesAcross,
numberOfSamplesDown: numberOfSamplesDown,
ymax: ymax,
xmin: xmin
});
case 3:
tileRasters = _context.sent;
case 4:
_loop = function _loop(h) {
var yCenterInMapPixels = tileNwPoint.y + (h + 0.5) * heightOfSampleInScreenPixels;
var latWestPoint = L.point(tileNwPoint.x, yCenterInMapPixels);
var _map$unproject = map.unproject(latWestPoint, coords.z),
lat = _map$unproject.lat;
if (lat > yMinOfLayer && lat < yMaxOfLayer) {
var _ret2 = function () {
var yInTilePixels = Math.round(h * heightOfSampleInScreenPixels);
var yInRasterPixels;
if (inSimpleCRS || _this3.projection === EPSG4326) {
yInRasterPixels = Math.floor((yMaxOfLayer - lat) / pixelHeight);
} else {
yInRasterPixels = null;
}
var _loop2 = function _loop2(w) {
var latLngPoint = L.point(tileNwPoint.x + (w + 0.5) * widthOfSampleInScreenPixels, yCenterInMapPixels);
var _map$unproject2 = map.unproject(latLngPoint, coords.z),
xOfLayer = _map$unproject2.lng;
if (xOfLayer > xMinOfLayer && xOfLayer < xMaxOfLayer) {
var xInRasterPixels;
if (inSimpleCRS || _this3.projection === EPSG4326) {
xInRasterPixels = Math.floor((xOfLayer - xMinOfLayer) / pixelWidth);
} else if (_this3.getProjector()) {
var inverted = _this3.getProjector().inverse({
x: xOfLayer,
y: lat
});
var yInSrc = inverted.y;
yInRasterPixels = Math.floor((ymax - yInSrc) / pixelHeight);
if (yInRasterPixels < 0 || yInRasterPixels >= rasterHeight) return "continue";
var xInSrc = inverted.x;
xInRasterPixels = Math.floor((xInSrc - xmin) / pixelWidth);
if (xInRasterPixels < 0 || xInRasterPixels >= rasterWidth) return "continue";
}
var values = null;
if (tileRasters) {
// get value from array specific to this tile
values = tileRasters.map(function (band) {
return band[h][w];
});
} else if (rasters) {
// get value from array with data for entire raster
values = rasters.map(function (band) {
return band[yInRasterPixels][xInRasterPixels];
});
} else {
done && done("no rasters are available for, so skipping value generation");
return {
v: {
v: {
v: void 0
}
}
};
} // x-axis coordinate of the starting point of the rectangle representing the raster pixel
var x = Math.round(w * widthOfSampleInScreenPixels); // y-axis coordinate of the starting point of the rectangle representing the raster pixel
var y = yInTilePixels; // how many real screen pixels does a pixel of the sampled raster take up
var width = widthOfSampleInScreenPixelsInt;
var height = heightOfSampleInScreenPixelsInt;
if (_this3.options.customDrawFunction) {
_this3.options.customDrawFunction({
values: values,
context: context,
x: x,
y: y,
width: width,
height: height,
rasterX: xInRasterPixels,
rasterY: yInRasterPixels,
sampleX: w,
sampleY: h,
sampledRaster: tileRasters
});
} else {
var color = _this3.getColor(values);
if (color) {
context.fillStyle = color;
context.fillRect(x, y, width, height);
}
}
}
};
for (var w = 0; w < numberOfSamplesAcross; w++) {
var _ret3 = _loop2(w);
if (_ret3 === "continue") continue;
if (_typeof(_ret3) === "object") return _ret3.v;
}
}();
if (_typeof(_ret2) === "object") return _ret2.v;
}
};
h = 0;
case 6:
if (!(h < numberOfSamplesDown)) {
_context.next = 13;
break;
}
_ret = _loop(h);
if (!(_typeof(_ret) === "object")) {
_context.next = 10;
break;
}
return _context.abrupt("return", _ret.v);
case 10:
h++;
_context.next = 6;
break;
case 13:
done && done(error, tile);
case 14:
case "end":
return _context.stop();
}
}
}, _callee);
})), 0); // return the tile so it can be rendered on screen
return tile;
},
// method from https://github.com/Leaflet/Leaflet/blob/bb1d94ac7f2716852213dd11563d89855f8d6bb1/src/layer/ImageOverlay.js
getBounds: function getBounds() {
this.initBounds();
return this._bounds;
},
getMap: function getMap() {
return this._map || this._mapToAdd;
},
_isValidTile: function _isValidTile(coords) {
var crs = this.getMap().options.crs;
if (!crs.infinite) {
// don't load tile if it's out of bounds and not wrapped
var globalBounds = this._globalTileRange;
if (!crs.wrapLng && (coords.x < globalBounds.min.x || coords.x > globalBounds.max.x) || !crs.wrapLat && (coords.y < globalBounds.min.y || coords.y > globalBounds.max.y)) {
return false;
}
}
var bounds = this.getBounds();
if (!bounds) {
return true;
}
var x = coords.x,
y = coords.y,
z = coords.z;
var layerBounds = L.latLngBounds(bounds);
var boundsOfTile = this._tileCoordsToBounds(coords); // check given tile coordinates
if (layerBounds.overlaps(boundsOfTile)) return true; // if not within the original confines of the earth return false
// we don't want wrapping if using Simple CRS
if (crs === L.CRS.Simple) return false; // width of the globe in tiles at the given zoom level
var width = Math.pow(2, z); // check one world to the left
var leftCoords = L.point(x - width, y);
leftCoords.z = z;
if (layerBounds.overlaps(this._tileCoordsToBounds(leftCoords))) return true; // check one world to the right
var rightCoords = L.point(x + width, y);
rightCoords.z = z;
if (layerBounds.overlaps(this._tileCoordsToBounds(rightCoords))) return true;
return false;
},
getColor: function getColor(values) {
var _this4 = this;
if (this.options.pixelValuesToColorFn) {
return this.options.pixelValuesToColorFn(values);
} else {
var numberOfValues = values.length;
var haveDataForAllBands = values.every(function (value) {
return value !== undefined && value !== _this4.noDataValue;
});
if (haveDataForAllBands) {
if (numberOfValues == 1) {
var _this$georasters$ = this.georasters[0],
mins = _this$georasters$.mins,
ranges = _this$georasters$.ranges;
var value = values[0];
if (this.palette) {
var _this$palette$value = _slicedToArray(this.palette[value], 4),
r = _this$palette$value[0],
g = _this$palette$value[1],
b = _this$palette$value[2],
a = _this$palette$value[3];
return "rgba(".concat(r, ",").concat(g, ",").concat(b, ",").concat(a / 255, ")");
} else {
return this.scale((values[0] - mins[0]) / ranges[0]).hex();
}
} else if (numberOfValues === 2) {
return "rgb(".concat(values[0], ",").concat(values[1], ",0)");
} else if (numberOfValues === 3) {
return "rgb(".concat(values[0], ",").concat(values[1], ",").concat(values[2], ")");
} else if (numberOfValues === 4) {
return "rgba(".concat(values[0], ",").concat(values[1], ",").concat(values[2], ",").concat(values[3] / 255, ")");
}
}
}
},
/**
* The callback used to determine the colour based on the values of each pixel
*
* @callback pixelValuesToColorFn
* @param {array | number} values - The pixel value depends on the image being rendered. Multiband images will be a tuple of one value per band. Single band images will be a single number
* @returns {string} - Any valid CSS color string
*/
/**
* Redraws the active map tiles updating the pixel values using the supplie callback
* @param {pixelValuesToColorFn} pixelValuesToColorFn - Callback that handles getting the pixel color
* @param {Object} [options] - Configuration options passed to the method
* @param {boolean} [options.debugLevel=0] - Overrides the global `debugLevel`. Set it to >=1 to allow output here when the global `debugLevel` = 0
*/
updateColors: function updateColors(pixelValuesToColorFn) {
var _this5 = this;
var _ref3 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
_ref3$debugLevel = _ref3.debugLevel,
debugLevel = _ref3$debugLevel === void 0 ? this.debugLevel : _ref3$debugLevel;
if (!pixelValuesToColorFn) {
throw new Error("Missing pixelValuesToColorFn function");
}
if (debugLevel >= 1) console.log("Start updating active tile pixel values"); // update option to ensure correct colours at other zoom levels.
this.options.pixelValuesToColorFn = pixelValuesToColorFn;
var tiles = this.getActiveTiles();
if (!tiles) {
console.error("No active tiles available");
return this;
}
if (debugLevel >= 1) console.log("Active tiles fetched", tiles);
tiles.forEach(function (tile) {
var coords = tile.coords,
el = tile.el;
_this5.drawTile({
tile: tile,
coords: coords,
context: el.getContext("2d")
});
});
if (debugLevel >= 1) console.log("Finished updating active tile colours");
return this;
},
getTiles: function getTiles() {
// transform _tiles object collection into an array
return Object.values(this._tiles);
},
getActiveTiles: function getActiveTiles() {
var _this6 = this;
var tiles = this.getTiles(); // only return valid tiles
return tiles.filter(function (tile) {
return _this6._isValidTile(tile.coords);
});
},
isSupportedProjection: function isSupportedProjection(projection) {
if (!projection) projection = this.projection;
return (0, _isUTM.default)(projection) || PROJ4_SUPPORTED_PROJECTIONS.has(projection);
},
getProjectionString: function getProjectionString(projection) {
if ((0, _isUTM.default)(projection)) {
return (0, _getProjString.default)(projection);
}
return "EPSG:".concat(projection);
},
initBounds: function initBounds() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.options;
if (!this._bounds) {
var debugLevel = this.debugLevel,
height = this.height,
width = this.width,
projection = this.projection,
xmin = this.xmin,
xmax = this.xmax,
ymin = this.ymin,
ymax = this.ymax; // check if map using Simple CRS
if (this.getMap().options.crs === L.CRS.Simple) {
if (height === width) {
this._bounds = L.latLngBounds([ORIGIN, [MAX_NORTHING, MAX_EASTING]]);
} else if (height > width) {
this._bounds = L.latLngBounds([ORIGIN, [MAX_NORTHING, MAX_EASTING / this.ratio]]);
} else if (width > height) {
this._bounds = L.latLngBounds([ORIGIN, [MAX_NORTHING * this.ratio, MAX_EASTING]]);
}
} else if (projection === EPSG4326) {
if (debugLevel >= 1) console.log("georaster projection is in ".concat(EPSG4326));
var minLatWest = L.latLng(ymin, xmin);
var maxLatEast = L.latLng(ymax, xmax);
this._bounds = L.latLngBounds(minLatWest, maxLatEast);
} else if (this.getProjector()) {
if (debugLevel >= 1) console.log("projection is UTM or supported by proj4");
var bottomLeft = this.getProjector().forward({
x: xmin,
y: ymin
});
var _minLatWest = L.latLng(bottomLeft.y, bottomLeft.x);
var topRight = this.getProjector().forward({
x: xmax,
y: ymax
});
var _maxLatEast = L.latLng(topRight.y, topRight.x);
this._bounds = L.latLngBounds(_minLatWest, _maxLatEast);
} else {
throw "georaster-layer-for-leaflet does not support rasters with the projection ".concat(projection);
} // these values are used so we don't try to sample outside of the raster
this.xMinOfLayer = this._bounds.getWest();
this.xMaxOfLayer = this._bounds.getEast();
this.yMaxOfLayer = this._bounds.getNorth();
this.yMinOfLayer = this._bounds.getSouth();
options.bounds = this._bounds;
}
},
getProjector: function getProjector() {
if (this.isSupportedProjection(this.projection)) {
if (!proj4) {
throw "proj4 must be found in the global scope in order to load a raster that uses a UTM projection";
}
if (!this._projector) {
this._projector = proj4(this.getProjectionString(this.projection), "EPSG:".concat(EPSG4326));
if (this.debugLevel >= 1) console.log("projector set");
}
return this._projector;
}
},
same: function same(array, key) {
return new Set(array.map(function (item) {
return item[key];
})).size === 1;
}
});
if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
module.exports = GeoRasterLayer;
}
if (typeof window !== "undefined") {
window["GeoRasterLayer"] = GeoRasterLayer;
} else if (typeof self !== "undefined") {
self["GeoRasterLayer"] = GeoRasterLayer; // jshint ignore:line
}
},{"chroma-js":2,"regenerator-runtime/runtime":3,"utm-utils/src/getProjString":5,"utm-utils/src/isUTM":7}],2:[function(require,module,exports){
/**
* @license
*
* chroma.js - JavaScript library for color conversions
*
* Copyright (c) 2011-2017, Gregor Aisch
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name Gregor Aisch may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL GREGOR AISCH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
(function() {
var Color, DEG2RAD, LAB_CONSTANTS, PI, PITHIRD, RAD2DEG, TWOPI, _average_lrgb, _guess_formats, _guess_formats_sorted, _input, _interpolators, abs, atan2, bezier, blend, blend_f, brewer, burn, chroma, clip_rgb, cmyk2rgb, colors, cos, css2rgb, darken, dodge, each, floor, hcg2rgb, hex2rgb, hsi2rgb, hsl2css, hsl2rgb, hsv2rgb, interpolate, interpolate_hsx, interpolate_lab, interpolate_lrgb, interpolate_num, interpolate_rgb, lab2lch, lab2rgb, lab_xyz, lch2lab, lch2rgb, lighten, limit, log, luminance_x, m, max, multiply, normal, num2rgb, overlay, pow, rgb2cmyk, rgb2css, rgb2hcg, rgb2hex, rgb2hsi, rgb2hsl, rgb2hsv, rgb2lab, rgb2lch, rgb2luminance, rgb2num, rgb2temperature, rgb2xyz, rgb_xyz, rnd, root, round, screen, sin, sqrt, temperature2rgb, type, unpack, w3cx11, xyz_lab, xyz_rgb,
slice = [].slice;
type = (function() {
/*
for browser-safe type checking+
ported from jQuery's $.type
*/
var classToType, len, name, o, ref;
classToType = {};
ref = "Boolean Number String Function Array Date RegExp Undefined Null".split(" ");
for (o = 0, len = ref.length; o < len; o++) {
name = ref[o];
classToType["[object " + name + "]"] = name.toLowerCase();
}
return function(obj) {
var strType;
strType = Object.prototype.toString.call(obj);
return classToType[strType] || "object";
};
})();
limit = function(x, min, max) {
if (min == null) {
min = 0;
}
if (max == null) {
max = 1;
}
if (x < min) {
x = min;
}
if (x > max) {
x = max;
}
return x;
};
unpack = function(args) {
if (args.length >= 3) {
return Array.prototype.slice.call(args);
} else {
return args[0];
}
};
clip_rgb = function(rgb) {
var i, o;
rgb._clipped = false;
rgb._unclipped = rgb.slice(0);
for (i = o = 0; o < 3; i = ++o) {
if (i < 3) {
if (rgb[i] < 0 || rgb[i] > 255) {
rgb._clipped = true;
}
if (rgb[i] < 0) {
rgb[i] = 0;
}
if (rgb[i] > 255) {
rgb[i] = 255;
}
} else if (i === 3) {
if (rgb[i] < 0) {
rgb[i] = 0;
}
if (rgb[i] > 1) {
rgb[i] = 1;
}
}
}
if (!rgb._clipped) {
delete rgb._unclipped;
}
return rgb;
};
PI = Math.PI, round = Math.round, cos = Math.cos, floor = Math.floor, pow = Math.pow, log = Math.log, sin = Math.sin, sqrt = Math.sqrt, atan2 = Math.atan2, max = Math.max, abs = Math.abs;
TWOPI = PI * 2;
PITHIRD = PI / 3;
DEG2RAD = PI / 180;
RAD2DEG = 180 / PI;
chroma = function() {
if (arguments[0] instanceof Color) {
return arguments[0];
}
return (function(func, args, ctor) {
ctor.prototype = func.prototype;
var child = new ctor, result = func.apply(child, args);
return Object(result) === result ? result : child;
})(Color, arguments, function(){});
};
chroma["default"] = chroma;
_interpolators = [];
if ((typeof module !== "undefined" && module !== null) && (module.exports != null)) {
module.exports = chroma;
}
if (typeof define === 'function' && define.amd) {
define([], function() {
return chroma;
});
} else {
root = typeof exports !== "undefined" && exports !== null ? exports : this;
root.chroma = chroma;
}
chroma.version = '1.4.1';
_input = {};
_guess_formats = [];
_guess_formats_sorted = false;
Color = (function() {
function Color() {
var arg, args, chk, len, len1, me, mode, o, w;
me = this;
args = [];
for (o = 0, len = arguments.length; o < len; o++) {
arg = arguments[o];
if (arg != null) {
args.push(arg);
}
}
if (args.length > 1) {
mode = args[args.length - 1];
}
if (_input[mode] != null) {
me._rgb = clip_rgb(_input[mode](unpack(args.slice(0, -1))));
} else {
if (!_guess_formats_sorted) {
_guess_formats = _guess_formats.sort(function(a, b) {
return b.p - a.p;
});
_guess_formats_sorted = true;
}
for (w = 0, len1 = _guess_formats.length; w < len1; w++) {
chk = _guess_formats[w];
mode = chk.test.apply(chk, args);
if (mode) {
break;
}
}
if (mode) {
me._rgb = clip_rgb(_input[mode].apply(_input, args));
}
}
if (me._rgb == null) {
console.warn('unknown format: ' + args);
}
if (me._rgb == null) {
me._rgb = [0, 0, 0];
}
if (me._rgb.length === 3) {
me._rgb.push(1);
}
}
Color.prototype.toString = function() {
return this.hex();
};
return Color;
})();
chroma._input = _input;
/**
ColorBrewer colors for chroma.js
Copyright (c) 2002 Cynthia Brewer, Mark Harrower, and The
Pennsylvania State University.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
@preserve
*/
chroma.brewer = brewer = {
OrRd: ['#fff7ec', '#fee8c8', '#fdd49e', '#fdbb84', '#fc8d59', '#ef6548', '#d7301f', '#b30000', '#7f0000'],
PuBu: ['#fff7fb', '#ece7f2', '#d0d1e6', '#a6bddb', '#74a9cf', '#3690c0', '#0570b0', '#045a8d', '#023858'],
BuPu: ['#f7fcfd', '#e0ecf4', '#bfd3e6', '#9ebcda', '#8c96c6', '#8c6bb1', '#88419d', '#810f7c', '#4d004b'],
Oranges: ['#fff5eb', '#fee6ce', '#fdd0a2', '#fdae6b', '#fd8d3c', '#f16913', '#d94801', '#a63603', '#7f2704'],
BuGn: ['#f7fcfd', '#e5f5f9', '#ccece6', '#99d8c9', '#66c2a4', '#41ae76', '#238b45', '#006d2c', '#00441b'],
YlOrBr: ['#ffffe5', '#fff7bc', '#fee391', '#fec44f', '#fe9929', '#ec7014', '#cc4c02', '#993404', '#662506'],
YlGn: ['#ffffe5', '#f7fcb9', '#d9f0a3', '#addd8e', '#78c679', '#41ab5d', '#238443', '#006837', '#004529'],
Reds: ['#fff5f0', '#fee0d2', '#fcbba1', '#fc9272', '#fb6a4a', '#ef3b2c', '#cb181d', '#a50f15', '#67000d'],
RdPu: ['#fff7f3', '#fde0dd', '#fcc5c0', '#fa9fb5', '#f768a1', '#dd3497', '#ae017e', '#7a0177', '#49006a'],
Greens: ['#f7fcf5', '#e5f5e0', '#c7e9c0', '#a1d99b', '#74c476', '#41ab5d', '#238b45', '#006d2c', '#00441b'],
YlGnBu: ['#ffffd9', '#edf8b1', '#c7e9b4', '#7fcdbb', '#41b6c4', '#1d91c0', '#225ea8', '#253494', '#081d58'],
Purples: ['#fcfbfd', '#efedf5', '#dadaeb', '#bcbddc', '#9e9ac8', '#807dba', '#6a51a3', '#54278f', '#3f007d'],
GnBu: ['#f7fcf0', '#e0f3db', '#ccebc5', '#a8ddb5', '#7bccc4', '#4eb3d3', '#2b8cbe', '#0868ac', '#084081'],
Greys: ['#ffffff', '#f0f0f0', '#d9d9d9', '#bdbdbd', '#969696', '#737373', '#525252', '#252525', '#000000'],
YlOrRd: ['#ffffcc', '#ffeda0', '#fed976', '#feb24c', '#fd8d3c', '#fc4e2a', '#e31a1c', '#bd0026', '#800026'],
PuRd: ['#f7f4f9', '#e7e1ef', '#d4b9da', '#c994c7', '#df65b0', '#e7298a', '#ce1256', '#980043', '#67001f'],
Blues: ['#f7fbff', '#deebf7', '#c6dbef', '#9ecae1', '#6baed6', '#4292c6', '#2171b5', '#08519c', '#08306b'],
PuBuGn: ['#fff7fb', '#ece2f0', '#d0d1e6', '#a6bddb', '#67a9cf', '#3690c0', '#02818a', '#016c59', '#014636'],
Viridis: ['#440154', '#482777', '#3f4a8a', '#31678e', '#26838f', '#1f9d8a', '#6cce5a', '#b6de2b', '#fee825'],
Spectral: ['#9e0142', '#d53e4f', '#f46d43', '#fdae61', '#fee08b', '#ffffbf', '#e6f598', '#abdda4', '#66c2a5', '#3288bd', '#5e4fa2'],
RdYlGn: ['#a50026', '#d73027', '#f46d43', '#fdae61', '#fee08b', '#ffffbf', '#d9ef8b', '#a6d96a', '#66bd63', '#1a9850', '#006837'],
RdBu: ['#67001f', '#b2182b', '#d6604d', '#f4a582', '#fddbc7', '#f7f7f7', '#d1e5f0', '#92c5de', '#4393c3', '#2166ac', '#053061'],
PiYG: ['#8e0152', '#c51b7d', '#de77ae', '#f1b6da', '#fde0ef', '#f7f7f7', '#e6f5d0', '#b8e186', '#7fbc41', '#4d9221', '#276419'],
PRGn: ['#40004b', '#762a83', '#9970ab', '#c2a5cf', '#e7d4e8', '#f7f7f7', '#d9f0d3', '#a6dba0', '#5aae61', '#1b7837', '#00441b'],
RdYlBu: ['#a50026', '#d73027', '#f46d43', '#fdae61', '#fee090', '#ffffbf', '#e0f3f8', '#abd9e9', '#74add1', '#4575b4', '#313695'],
BrBG: ['#543005', '#8c510a', '#bf812d', '#dfc27d', '#f6e8c3', '#f5f5f5', '#c7eae5', '#80cdc1', '#35978f', '#01665e', '#003c30'],
RdGy: ['#67001f', '#b2182b', '#d6604d', '#f4a582', '#fddbc7', '#ffffff', '#e0e0e0', '#bababa', '#878787', '#4d4d4d', '#1a1a1a'],
PuOr: ['#7f3b08', '#b35806', '#e08214', '#fdb863', '#fee0b6', '#f7f7f7', '#d8daeb', '#b2abd2', '#8073ac', '#542788', '#2d004b'],
Set2: ['#66c2a5', '#fc8d62', '#8da0cb', '#e78ac3', '#a6d854', '#ffd92f', '#e5c494', '#b3b3b3'],
Accent: ['#7fc97f', '#beaed4', '#fdc086', '#ffff99', '#386cb0', '#f0027f', '#bf5b17', '#666666'],
Set1: ['#e41a1c', '#377eb8', '#4daf4a', '#984ea3', '#ff7f00', '#ffff33', '#a65628', '#f781bf', '#999999'],
Set3: ['#8dd3c7', '#ffffb3', '#bebada', '#fb8072', '#80b1d3', '#fdb462', '#b3de69', '#fccde5', '#d9d9d9', '#bc80bd', '#ccebc5', '#ffed6f'],
Dark2: ['#1b9e77', '#d95f02', '#7570b3', '#e7298a', '#66a61e', '#e6ab02', '#a6761d', '#666666'],
Paired: ['#a6cee3', '#1f78b4', '#b2df8a', '#33a02c', '#fb9a99', '#e31a1c', '#fdbf6f', '#ff7f00', '#cab2d6', '#6a3d9a', '#ffff99', '#b15928'],
Pastel2: ['#b3e2cd', '#fdcdac', '#cbd5e8', '#f4cae4', '#e6f5c9', '#fff2ae', '#f1e2cc', '#cccccc'],
Pastel1: ['#fbb4ae', '#b3cde3', '#ccebc5', '#decbe4', '#fed9a6', '#ffffcc', '#e5d8bd', '#fddaec', '#f2f2f2']
};
(function() {
var key, results;
results = [];
for (key in brewer) {
results.push(brewer[key.toLowerCase()] = brewer[key]);
}
return results;
})();
/**
X11 color names
http://www.w3.org/TR/css3-color/#svg-color