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annotate client/tests/unit/geo/geo.spec.js @ 692:87ea9d267c2b

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refac: transformation formula for diagram adjusted 1) the length of the segments of a polyline are now summed 2) each point has an x coordinate according to the length of the polyline up to this point 3) testdata were hand crafted and used as basis for plausibility checks
author Thomas Junk <thomas.junk@intevation.de>
date Thu, 20 Sep 2018 15:12:49 +0200
parents 3605af94d1ee
children 1db1ae344087
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4c36b0e39d78 feat: prepareProfile converts geoJSON to diagram data.
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1 import { prepareProfile } from "../../../src/application/lib/geo";
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2
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3 const geoJSON = {
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4 type: "Feature",
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5 geometry: {
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6 type: "MultiLineString",
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7 coordinates: [
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8 [
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9 [17.216391563415527, 48.0245195664277, 123],
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10 [17.216777801513672, 48.024720482272315, 124]
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11 ],
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12 [
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13 [17.218494415283203, 48.02540933065123, 125],
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14 [17.219438552856445, 48.02586855778941, 126],
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15 [17.220726013183594, 48.02647128719908, 127],
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16 [17.221627235412598, 48.026987906797494, 128],
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17 [17.222957611083984, 48.02759062311748, 129],
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18 [17.223901748657227, 48.0280785311666, 130],
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19 [17.224159240722656, 48.02819333238926, 131]
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20 ],
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21 [
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22 [17.225961685180664, 48.02891083423718, 132],
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23 [17.227892875671383, 48.02997271864036, 133]
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24 ]
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25 ]
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26 },
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27 properties: {}
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28 };
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29
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30 test("prepare diagram", () => {
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31 const coordinates = geoJSON.geometry.coordinates;
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32 const firstSegment = coordinates[0];
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33 const lastSegment = coordinates[coordinates.length - 1];
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34 const startPoint = firstSegment[0];
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35 const endPoint = lastSegment[lastSegment.length - 1];
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36 const result = prepareProfile({ geoJSON, startPoint, endPoint });
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37 const alts = result.points.reduce((o, n) => {
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38 let y = n.map(e => {
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39 return e.y;
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40 });
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41 o = o.concat(y);
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42 return o;
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43 }, []);
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44 const growing = values => {
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45 let first = values[0].x;
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46 for (let v of values) {
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47 if (first > v.x) return false;
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48 }
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49 return true;
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50 };
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51 const minAlt = Math.min(...alts);
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52 const maxAlt = Math.max(...alts);
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53 expect(result.minAlt).toBe(minAlt);
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54 expect(result.maxAlt).toBe(maxAlt);
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55 expect(growing(result.points[0])).toBe(true);
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56 expect(result.lengthPolyLine == 1051.5361933142963).toBe(true);
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57 });