path trajectoire; trajectoire = (160.000,163.087)..(164.522,162.944)..(168.987,162.539)..(173.363,161.942)..(177.653,161.238) ..(181.876,160.516)..(186.059,159.864)..(190.209,159.372)..(194.304,159.129)..(198.276,159.205) ..(202.031,159.616)..(205.489,160.310)..(208.629,161.207)..(211.475,162.242)..(214.066,163.382) ..(216.435,164.617)..(218.603,165.951)..(220.577,167.392)..(222.355,168.944)..(223.927,170.608) ..(225.281,172.378)..(226.401,174.243)..(227.275,176.184)..(227.892,178.179)..(228.246,180.200) ..(228.334,182.220)..(228.159,184.211)..(227.729,186.142)..(227.054,187.988)..(226.148,189.721) ..(225.026,191.319)..(223.704,192.756)..(222.202,194.011)..(220.538,195.064)..(218.735,195.895) ..(216.815,196.490)..(214.803,196.837)..(212.726,196.926)..(210.608,196.756)..(208.474,196.328) ..(206.344,195.647)..(204.233,194.723)..(202.149,193.564)..(200.093,192.177)..(198.059,190.564) ..(196.035,188.716)..(194.011,186.609)..(191.984,184.204)..(189.977,181.453)..(188.050,178.322) ..(186.282,174.828)..(184.734,171.052)..(183.407,167.099)..(182.254,163.058)..(181.204,158.975) ..(180.182,154.869)..(179.114,150.743)..(177.923,146.596)..(176.528,142.437)..(174.854,138.296) ..(172.849,134.233)..(170.516,130.323)..(167.920,126.616)..(165.157,123.112)..(162.312,119.769) ..(159.450,116.528)..(156.624,113.333)..(153.883,110.136)..(151.279,106.906)..(148.867,103.636) ..(146.696,100.346)..(144.789,97.077)..(143.140,93.870)..(141.723,90.752)..(140.501,87.730) ..(139.447,84.793)..(138.539,81.926)..(137.769,79.110)..(137.131,76.332)..(136.628,73.583) ..(136.259,70.858)..(136.030,68.160)..(135.945,65.492)..(136.006,62.860)..(136.217,60.270) ..(136.577,57.728)..(137.085,55.243)..(137.736,52.821)..(138.523,50.470)..(139.436,48.198) ..(140.462,46.008)..(141.582,43.902)..(142.777,41.876)..(144.022,39.919)..(145.293,38.006) ..(146.565,36.092)..(147.821,34.107)..(149.073,31.930)..(150.408,29.374)..(152.130,26.200) ..(154.924,22.421)..(159.302,18.839)..(164.726,16.258)..(170.480,14.688)..(176.236,13.884) ..(181.876,13.652)..(187.365,13.862)..(192.694,14.427)..(197.862,15.288)..(202.876,16.401) ..(207.741,17.733)..(212.463,19.259)..(217.048,20.959)..(221.500,22.816)..(225.826,24.817) ..(230.029,26.950)..(234.113,29.205)..(238.081,31.574)..(241.936,34.051)..(245.680,36.628) ..(249.314,39.300)..(252.840,42.064)..(256.258,44.914)..(259.569,47.847)..(262.776,50.859) ..(265.878,53.947)..(268.877,57.107)..(271.773,60.337)..(274.566,63.633)..(277.256,66.992) ..(279.845,70.413)..(282.331,73.892)..(284.714,77.428)..(286.995,81.018)..(289.173,84.660) ..(291.246,88.352)..(293.216,92.091)..(295.080,95.876)..(296.838,99.703)..(298.489,103.571) ..(300.033,107.477)..(301.468,111.420)..(302.794,115.395)..(304.011,119.401)..(305.118,123.436) ..(306.113,127.497)..(306.998,131.581)..(307.769,135.686)..(308.428,139.810)..(308.973,143.948) ..(309.404,148.099)..(309.719,152.259)..(309.918,156.426)..(310.000,160.595)..(309.965,164.764) ..(309.812,168.929)..(309.542,173.087)..(309.153,177.234)..(308.646,181.366)..(308.020,185.481) ..(307.277,189.573)..(306.415,193.640)..(305.435,197.678)..(304.339,201.684)..(303.125,205.653) ..(301.796,209.583)..(300.351,213.469)..(298.793,217.308)..(297.122,221.096)..(295.340,224.831) ..(293.450,228.509)..(291.452,232.126)..(289.350,235.680)..(287.145,239.168)..(284.841,242.587) ..(282.440,245.934)..(279.944,249.208)..(277.358,252.405)..(274.683,255.524)..(271.923,258.563) ..(269.081,261.520)..(266.160,264.393)..(263.164,267.180)..(260.094,269.880)..(256.954,272.490) ..(253.747,275.011)..(250.477,277.439)..(247.146,279.775)..(243.757,282.017)..(240.313,284.163) ..(236.818,286.214)..(233.273,288.168)..(229.683,290.024)..(226.048,291.782)..(222.373,293.442) ..(218.659,295.003)..(214.910,296.464)..(211.127,297.825)..(207.312,299.086)..(203.470,300.246) ..(199.600,301.306)..(195.708,302.265)..(191.793,303.122)..(187.860,303.879)..(183.910,304.534) ..(179.947,305.089)..(175.971,305.542)..(171.986,305.895)..(167.995,306.146)..(163.999,306.297) ..(160.000,306.348)..(156.001,306.297)..(152.005,306.146)..(148.014,305.895)..(144.029,305.542) ..(140.053,305.089)..(136.090,304.534)..(132.140,303.879)..(128.207,303.122)..(124.292,302.265) ..(120.400,301.306)..(116.530,300.246)..(112.688,299.086)..(108.873,297.825)..(105.090,296.464) ..(101.341,295.003)..(97.627,293.442)..(93.952,291.782)..(90.317,290.024)..(86.727,288.168) ..(83.182,286.214)..(79.687,284.163)..(76.243,282.017)..(72.854,279.775)..(69.523,277.439) ..(66.253,275.011)..(63.046,272.490)..(59.906,269.880)..(56.836,267.180)..(53.840,264.393) ..(50.919,261.520)..(48.077,258.563)..(45.317,255.524)..(42.642,252.405)..(40.056,249.208) ..(37.560,245.934)..(35.159,242.587)..(32.855,239.168)..(30.650,235.680)..(28.548,232.126) ..(26.550,228.509)..(24.660,224.831)..(22.878,221.096)..(21.207,217.308)..(19.649,213.469) ..(18.204,209.583)..(16.875,205.653)..(15.661,201.684)..(14.565,197.678)..(13.585,193.640) ..(12.723,189.573)..(11.980,185.481)..(11.354,181.366)..(10.847,177.234)..(10.458,173.087) ..(10.188,168.929)..(10.035,164.764)..(10.000,160.595)..(10.082,156.426)..(10.281,152.259) ..(10.596,148.099)..(11.027,143.948)..(11.572,139.810)..(12.231,135.686)..(13.002,131.581) ..(13.887,127.497)..(14.882,123.436)..(15.989,119.401)..(17.206,115.395)..(18.532,111.420) ..(19.967,107.477)..(21.511,103.571)..(23.162,99.703)..(24.920,95.876)..(26.784,92.091) ..(28.754,88.352)..(30.827,84.660)..(33.005,81.018)..(35.286,77.428)..(37.669,73.892) ..(40.155,70.413)..(42.744,66.992)..(45.434,63.633)..(48.227,60.337)..(51.123,57.107) ..(54.122,53.947)..(57.224,50.859)..(60.431,47.847)..(63.742,44.914)..(67.160,42.064) ..(70.686,39.300)..(74.320,36.628)..(78.064,34.051)..(81.919,31.574)..(85.887,29.205) ..(89.971,26.950)..(94.174,24.817)..(98.500,22.816)..(102.952,20.959)..(107.537,19.259) ..(112.259,17.733)..(117.124,16.401)..(122.138,15.288)..(127.306,14.427)..(132.635,13.862) ..(138.124,13.652)..(143.764,13.884)..(149.520,14.688)..(155.274,16.258)..(160.698,18.839) ..(165.076,22.421)..(167.870,26.200)..(169.592,29.374)..(170.927,31.930)..(172.179,34.107) ..(173.435,36.092)..(174.707,38.006)..(175.978,39.919)..(177.223,41.876)..(178.418,43.902) ..(179.538,46.008)..(180.564,48.198)..(181.477,50.470)..(182.264,52.821)..(182.915,55.243) ..(183.423,57.728)..(183.783,60.270)..(183.994,62.860)..(184.055,65.492)..(183.970,68.160) ..(183.741,70.858)..(183.372,73.583)..(182.869,76.332)..(182.231,79.110)..(181.461,81.926) ..(180.553,84.793)..(179.499,87.730)..(178.277,90.752)..(176.860,93.870)..(175.211,97.077) ..(173.304,100.346)..(171.133,103.636)..(168.721,106.906)..(166.117,110.136)..(163.376,113.333) ..(160.550,116.528)..(157.688,119.769)..(154.843,123.112)..(152.080,126.616)..(149.484,130.323) ..(147.151,134.233)..(145.146,138.296)..(143.472,142.437)..(142.077,146.596)..(140.886,150.743) ..(139.818,154.869)..(138.796,158.975)..(137.746,163.058)..(136.593,167.099)..(135.266,171.052) ..(133.718,174.828)..(131.950,178.322)..(130.023,181.453)..(128.016,184.204)..(125.989,186.609) ..(123.965,188.716)..(121.941,190.564)..(119.907,192.177)..(117.851,193.564)..(115.767,194.723) ..(113.656,195.647)..(111.526,196.328)..(109.392,196.756)..(107.274,196.926)..(105.197,196.837) ..(103.185,196.490)..(101.265,195.895)..(99.462,195.064)..(97.798,194.011)..(96.296,192.756) ..(94.974,191.319)..(93.852,189.721)..(92.946,187.988)..(92.271,186.142)..(91.841,184.211) ..(91.666,182.220)..(91.754,180.200)..(92.108,178.179)..(92.725,176.184)..(93.599,174.243) ..(94.719,172.378)..(96.073,170.608)..(97.645,168.944)..(99.423,167.392)..(101.397,165.951) ..(103.565,164.617)..(105.934,163.382)..(108.525,162.242)..(111.371,161.207)..(114.511,160.310) ..(117.969,159.616)..(121.724,159.205)..(125.696,159.129)..(129.791,159.372)..(133.941,159.864) ..(138.124,160.516)..(142.347,161.238)..(146.637,161.942)..(151.013,162.539)..(155.478,162.944) ..(160.000,163.087); b := 20; d := 420; beginfig(1); draw trajectoire withpen pencircle scaled 1pt withcolor 0.4white; for i:= b step b until d: draw (point i of trajectoire) withpen pencircle scaled 5pt withcolor blue; endfor; draw (point 0 of trajectoire) withpen pencircle scaled 5pt withcolor red; endfig; end