ESM: Ported Convert operations

2025-04-21 07:16:17 -04:00 · 2018-05-14 17:03:23 +00:00 · 2018-05-14 17:03:23 +00:00 · cefe5bbaa8
commit cefe5bbaa8
parent d327dd47b2
5 changed files with 557 additions and 0 deletions
--- a/src/core/operations/ConvertArea.mjs
+++ b/src/core/operations/ConvertArea.mjs
@ -0,0 +1,112 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+
+/**
+ * Convert area operation
+ */
+class ConvertArea extends Operation {
+
+    /**
+     * ConvertArea constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Convert area";
+        this.module = "Default";
+        this.description = "Converts a unit of area to another format.";
+        this.inputType = "BigNumber";
+        this.outputType = "BigNumber";
+        this.args = [
+            {
+                "name": "Input units",
+                "type": "option",
+                "value": AREA_UNITS
+            },
+            {
+                "name": "Output units",
+                "type": "option",
+                "value": AREA_UNITS
+            }
+        ];
+    }
+
+    /**
+     * @param {BigNumber} input
+     * @param {Object[]} args
+     * @returns {BigNumber}
+     */
+    run(input, args) {
+        const [inputUnits, outputUnits] = args;
+
+        input = input.times(AREA_FACTOR[inputUnits]);
+        return input.div(AREA_FACTOR[outputUnits]);
+    }
+
+}
+
+
+const AREA_UNITS = [
+    "[Metric]", "Square metre (sq m)", "Square kilometre (sq km)", "Centiare (ca)", "Deciare (da)", "Are (a)", "Decare (daa)", "Hectare (ha)", "[/Metric]",
+    "[Imperial]", "Square inch (sq in)", "Square foot (sq ft)", "Square yard (sq yd)", "Square mile (sq mi)", "Perch (sq per)", "Rood (ro)", "International acre (ac)", "[/Imperial]",
+    "[US customary units]", "US survey acre (ac)", "US survey square mile (sq mi)", "US survey township", "[/US customary units]",
+    "[Nuclear physics]", "Yoctobarn (yb)", "Zeptobarn (zb)", "Attobarn (ab)", "Femtobarn (fb)", "Picobarn (pb)", "Nanobarn (nb)", "Microbarn (μb)", "Millibarn (mb)", "Barn (b)", "Kilobarn (kb)", "Megabarn (Mb)", "Outhouse", "Shed", "Planck area", "[/Nuclear physics]",
+    "[Comparisons]", "Washington D.C.", "Isle of Wight", "Wales", "Texas", "[/Comparisons]",
+];
+
+const AREA_FACTOR = { // Multiples of a square metre
+    // Metric
+    "Square metre (sq m)":      1,
+    "Square kilometre (sq km)": 1e6,
+
+    "Centiare (ca)":            1,
+    "Deciare (da)":             10,
+    "Are (a)":                  100,
+    "Decare (daa)":             1e3,
+    "Hectare (ha)":             1e4,
+
+    // Imperial
+    "Square inch (sq in)":      0.00064516,
+    "Square foot (sq ft)":      0.09290304,
+    "Square yard (sq yd)":      0.83612736,
+    "Square mile (sq mi)":      2589988.110336,
+    "Perch (sq per)":           42.21,
+    "Rood (ro)":                1011,
+    "International acre (ac)":  4046.8564224,
+
+    // US customary units
+    "US survey acre (ac)":      4046.87261,
+    "US survey square mile (sq mi)": 2589998.470305239,
+    "US survey township":       93239944.9309886,
+
+    // Nuclear physics
+    "Yoctobarn (yb)":           1e-52,
+    "Zeptobarn (zb)":           1e-49,
+    "Attobarn (ab)":            1e-46,
+    "Femtobarn (fb)":           1e-43,
+    "Picobarn (pb)":            1e-40,
+    "Nanobarn (nb)":            1e-37,
+    "Microbarn (μb)":           1e-34,
+    "Millibarn (mb)":           1e-31,
+    "Barn (b)":                 1e-28,
+    "Kilobarn (kb)":            1e-25,
+    "Megabarn (Mb)":            1e-22,
+
+    "Planck area":              2.6e-70,
+    "Shed":                     1e-52,
+    "Outhouse":                 1e-34,
+
+    // Comparisons
+    "Washington D.C.":          176119191.502848,
+    "Isle of Wight":            380000000,
+    "Wales":                    20779000000,
+    "Texas":                    696241000000,
+};
+
+
+export default ConvertArea;