65 lines
1.5 KiB
JavaScript
65 lines
1.5 KiB
JavaScript
export function filterNonNumber (array) {
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return array.filter(n => typeof n === 'number')
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}
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export function mulAdd (nums) {
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nums = filterNonNumber(nums)
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return nums.reduce((all, num) => all + num, 0)
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}
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export function getTwoPointDistance (pointOne, pointTwo) {
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const minusX = Math.abs(pointOne[0] - pointTwo[0])
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const minusY = Math.abs(pointOne[1] - pointTwo[1])
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return Math.sqrt(minusX * minusX + minusY * minusY)
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}
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export function getPolylineLength(points) {
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const lineSegments = new Array(points.length - 1)
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.fill(0)
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.map((foo, i) => [points[i], points[i + 1]])
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const lengths = lineSegments.map(item => getTwoPointDistance(...item))
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return mulAdd(lengths)
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}
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export function get_in_positioning_id(GSAArr) {
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let in_positioning_id = []
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GSAArr.forEach(({ satellites }) => {
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in_positioning_id.push(...satellites)
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});
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return in_positioning_id
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}
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export function getNMEAObj(nmeaStr) {
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if (!nmeaStr) return
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return JSON.parse(nmeaStr)
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}
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export function getGSV (nmeaStr) {
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const nmeaObj = getNMEAObj(nmeaStr)
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console.log(nmeaObj, '================')
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if (!nmeaObj || !nmeaObj.GSV) return null
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const { GSV } = nmeaObj
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const bd = {
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GSVArr: GSV.filter((gsv) => gsv.talker_id === 'BD')
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}
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const gp = {
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GSVArr: GSV.filter((gsv) => gsv.talker_id === 'GP')
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}
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const gl = {
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GSVArr: GSV.filter((gsv) => gsv.talker_id === 'GL')
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}
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const ga = {
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GSVArr: GSV.filter((gsv) => gsv.talker_id === 'GA')
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}
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return { bd, gp, gl, ga }
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}
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