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117 lines
3.5 KiB
117 lines
3.5 KiB
// degree -> radian 변환 |
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const deg2rad = (deg) => { |
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return deg * (Math.PI / 180); |
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} |
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const rad2deg = (rad) => { |
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return rad * (180 / Math.PI); |
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} |
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// 좌표간 거리계산 |
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const getDistanceFromCoordByMeter = (coord1, coord2) => { |
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const R = 6371; // Radius of the earth in km |
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const dLat = deg2rad(coord2[0] - coord1[0]); // deg2rad below |
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const dLon = deg2rad(coord2[1] - coord1[1]); |
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const a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(deg2rad(coord1[0])) * Math.cos(deg2rad(coord2[0])) * Math.sin(dLon / 2) * Math.sin(dLon / 2); |
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const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); |
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// var d = R * c; // Distance in km |
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const d = R * c * 1000; // Distance in m |
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return d; |
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} |
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// 두 좌표사이 특정 거리만큼의 좌표 추출 |
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const getCoordsFormBetweenCoord = (coord1, coord2, dist) => { |
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// console.log('init ===> ', {coord1, coord2, dist}) |
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const r = []; |
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// 처음 좌표 |
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r.push(coord1); |
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// 중간 좌표 |
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const totalDist = getDistanceFromCoordByMeter(coord1, coord2); |
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const dx = coord2[0] - coord1[0]; |
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const singX = dx < 0 ? -1 : 1; |
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const dy = coord2[1] - coord1[1]; |
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const singY = dy < 0 ? -1 : 1; |
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const m = dy / dx; |
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const rad = Math.atan(m) |
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const currentTotalDist = Math.sqrt((dx ** 2) + (dy ** 2)) |
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const currentDivDist = (dist * currentTotalDist) / totalDist; |
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const div = Math.floor(currentTotalDist / currentDivDist); |
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for (let i = 1; i <= div; i++) { |
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const currentDist = currentDivDist * i; |
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let x = coord1[0]; |
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let y = coord1[1]; |
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if (dx == 0) { |
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y += currentDist * singY; |
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} else if (dy == 0) { |
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x += currentDist * singX; |
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} else { |
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x += Math.cos(rad) * currentDist; |
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y += Math.sin(rad) * currentDist; |
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} |
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r.push([x, y]) |
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} |
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// 마지막 좌표 |
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r.push(coord2) |
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return r; |
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} |
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const dumyData = { |
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"authKey": "1cc2e08e-0c5c-43b2-8d4d-cddd3de558e3", |
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"terminalId": "SANDBOX-01", |
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"command": "SANDBOX", |
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"body": [ |
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{ |
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"objectId": "JAL497", |
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"lat": 37.52097, |
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"lon": 126.6146, |
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"elevType": "M", |
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"elev": 125.4, |
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"speedType": "KM", |
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"speed": 145.8, |
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"heading": 227.94, |
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"terminalRcvDt": "20210629173145", |
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"betteryLevel": 91, |
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"betteryVoltage": 50, |
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"dronStatus": "TAKEOFF", |
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"moveDistance": 120, |
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"moveDistanceType": "M", |
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"sensorCo": 100.11, |
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"sensorSo2": 200.22, |
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"sensorNo2": 300.33, |
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"sensorO3": 400.44, |
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"sensorDust": 500.55 |
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} |
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] |
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} |
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module.exports = {getDistanceFromCoordByMeter, deg2rad, getCoordsFormBetweenCoord, dumyData} |
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const test = () => { |
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const coord1 = [37.5210, 126.6082]; |
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// const coord2 = [37.5210, 126.6057]; // x 절편 |
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const coord2 = [37.5200, 126.6082]; // y 절편 |
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// const coord2 = [37.5220, 126.6057]; // 일반 |
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const r = getCoordsFormBetweenCoord(coord1, coord2, 10) |
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console.log(r) |
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for (let i = 1; i < r.length; i++) { |
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const dist = getDistanceFromCoordByMeter(r[i-1], r[i]); |
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console.log(dist) |
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} |
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} |
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// test(); |
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const test2 = () => { |
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let m = 10.5 / 14 |
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console.log(3 / 4, 13.5 / 18, (13.5 - 3) / (18 - 4)) |
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let rad = Math.atan(m); |
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let tan = Math.tan(rad) |
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let cos = Math.cos(rad) |
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let sin = Math.sin(rad) |
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console.log({rad, tan, cos, sin}) |
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let x = Math.cos(rad) * 15 |
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let y = Math.sin(rad) * 15 |
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console.log({x, y}) |
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} |
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// test2();
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