pixel-utils/dist/cjs/raw-to-rgb/index.js

Utility Functions for Pixels

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = rawToRgb;
var _quickScale = require("quick-scale");
var _makeNoDataRgb = _interopRequireDefault(require("../make-no-data-rgb"));
var _convertSingle = _interopRequireDefault(require("./convert-single"));
var _convertSingleStr = _interopRequireDefault(require("./convert-single-str"));
var _convertDouble = _interopRequireDefault(require("./convert-double"));
var _convertDoubleStr = _interopRequireDefault(require("./convert-double-str"));
var _convertTriple = _interopRequireDefault(require("./convert-triple"));
var _convertTripleStr = _interopRequireDefault(require("./convert-triple-str"));
var _convertMany = _interopRequireDefault(require("./convert-many"));
var _convertManyStr = _interopRequireDefault(require("./convert-many-str"));
var _rgbToStr = _interopRequireDefault(require("../rgb-to-str"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function rawToRgb({
  format = "array",
  ranges,
  flip,
  new_no_data_pixel,
  new_no_data_value,
  no_range_value,
  no_range_value_strategy,
  old_no_data_value,
  round = true
}) {
  const nbands = ranges.length;
  if (new_no_data_pixel && new_no_data_value) {
    throw new Error("[pixel-utils/raw-to-rgb] can't specify both new_no_data_pixel and new_no_data_value");
  }
  if (new_no_data_pixel === undefined || new_no_data_pixel === null) {
    if (new_no_data_value === undefined || new_no_data_value === null) {
      new_no_data_pixel = (0, _makeNoDataRgb.default)(null);
    } else {
      new_no_data_pixel = (0, _makeNoDataRgb.default)(new_no_data_value);
    }
  }
  if (new_no_data_pixel === undefined) throw new Error("[raw-to-rgb] undefined new_no_data_pixel");
  const new_range = [0 === new_no_data_value ? 1 : 0, 255 === new_no_data_value ? 254 : 255];
  const options = {
    flip,
    no_range_value,
    no_range_value_strategy,
    round
  };
  const scalefns = ranges.slice(0, 3).map(rng => (0, _quickScale.createScaleFunction)(rng, new_range, options));
  if (nbands === 1) {
    if (format === "string") {
      // @ts-ignore
      return _convertSingleStr.default.bind(null, old_no_data_value, (0, _rgbToStr.default)(new_no_data_pixel), ...scalefns);
    } else {
      // @ts-ignore
      return _convertSingle.default.bind(null, old_no_data_value, new_no_data_pixel, ...scalefns);
    }
  } else if (nbands === 2) {
    if (format === "string") {
      // @ts-ignore
      return _convertDoubleStr.default.bind(null, old_no_data_value, (0, _rgbToStr.default)(new_no_data_pixel), ...scalefns);
    } else {
      // @ts-ignore
      return _convertDouble.default.bind(null, old_no_data_value, new_no_data_pixel, ...scalefns);
    }
  } else if (nbands === 3) {
    if (format === "string") {
      // @ts-ignore
      return _convertTripleStr.default.bind(null, old_no_data_value, (0, _rgbToStr.default)(new_no_data_pixel), ...scalefns);
    } else {
      // @ts-ignore
      return _convertTriple.default.bind(null, old_no_data_value, new_no_data_pixel, ...scalefns);
    }
  } else if (nbands >= 4) {
    if (format === "string") {
      // @ts-ignore
      return _convertManyStr.default.bind(null, old_no_data_value, (0, _rgbToStr.default)(new_no_data_pixel), ...scalefns);
    } else {
      // @ts-ignore
      return _convertMany.default.bind(null, old_no_data_value, new_no_data_pixel, ...scalefns);
    }
  } else {
    throw new Error("[pixel-utils/raw-to-rgb] invalid number of bands: " + nbands);
  }
}