13 lines
526 B
JavaScript
13 lines
526 B
JavaScript
module.exports = {
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calculateVector: (pos1, pos2) => {
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let delta = [Math.round(pos2[0] - pos1[0]), Math.round(pos2[1] - pos1[1])];
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let distance = parseFloat(Math.sqrt(Math.pow(delta[0], 2) + Math.pow(delta[1], 2)).toFixed(0));
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let thetat = Math.round(Math.atan2(delta[0], delta[1]) / Math.PI * 180);
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let theta = (thetat < 0) ? (360 + thetat) : thetat;
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let compass = ["S", "SW", "W", "NW", "N", "NE", "E", "SE", "S"];
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let dir = compass[Math.round(theta / 45)];
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return {distance, theta, dir}
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}
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}
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