正弦曲线

let dataArr = [
  64,
  62.42983442152262,
  60.86345150945406,
  59.304624817428426,
  57.7571096954839,
  56.22463424309556,
  54.71089032785721,
  53.21952469144896,
  51.754130164317125,
  50.31823701023097,
  48.915304421568074,
  47.54871218581691,
  46.22175254337273,
  44.937622256242136,
  43.699414906763344,
  42.51011344489541,
  41.37258300203048,
  40.289563988641305,
  39.26366549239242,
  38.297358992619365,
  37.39297240631855,
  36.55268447999129,
  35.77851954085264,
  35.07234262004981,
  34.435854959638824,
  33.87058991414334,
  33.37790925656931,
  32.95899989777459,
  32.614871027096626,
  32.346351681127004,
  32.154088746489705,
  32.03854540143448,
  32,
  32.03854540143448,
  32.154088746489705,
  32.346351681127004,
  32.614871027096626,
  32.95899989777459,
  33.37790925656931,
  33.87058991414333,
  34.435854959638824,
  35.07234262004981,
  35.77851954085264,
  36.552684479991285,
  37.39297240631855,
  38.297358992619365,
  39.26366549239241,
  40.289563988641305,
  41.37258300203048,
  42.51011344489541,
  43.699414906763344,
  44.93762225624213,
  46.22175254337273,
  47.5487121858169,
  48.91530442156807,
  50.31823701023097,
  51.754130164317125,
  53.21952469144895,
  54.71089032785721,
  56.22463424309555,
  57.757109695483884,
  59.30462481742842,
  60.86345150945405,
  62.42983442152263,
  63.99999999999999,
  65.57016557847737,
  67.13654849054593,
  68.69537518257157,
  70.24289030451611,
  71.77536575690445,
  73.28910967214279,
  74.78047530855105,
  76.24586983568287,
  77.68176298976901,
  79.08469557843192,
  80.45128781418309,
  81.77824745662727,
  83.06237774375786,
  84.30058509323665,
  85.48988655510459,
  86.62741699796952,
  87.71043601135868,
  88.73633450760758,
  89.70264100738063,
  90.60702759368145,
  91.4473155200087,
  92.22148045914736,
  92.92765737995018,
  93.56414504036117,
  94.12941008585668,
  94.62209074343068,
  95.04100010222541,
  95.38512897290337,
  95.653648318873,
  95.8459112535103,
  95.96145459856552,
  96,
  95.96145459856552,
  95.84591125351031,
  95.653648318873,
  95.38512897290337,
  95.04100010222541,
  94.62209074343069,
  94.12941008585668,
  93.56414504036117,
  92.92765737995019,
  92.22148045914736,
  91.44731552000871,
  90.60702759368145,
  89.70264100738065,
  88.73633450760758,
  87.7104360113587,
  86.62741699796953,
  85.48988655510459,
  84.30058509323666,
  83.06237774375786,
  81.77824745662727,
  80.4512878141831,
  79.08469557843193,
  77.68176298976904,
  76.2458698356829,
  74.78047530855105,
  73.2891096721428,
  71.77536575690445,
  70.24289030451612,
  68.6953751825716,
  67.13654849054593,
  65.57016557847737
].reverse()