path trajectoire; trajectoire = (310.000,160.000)..(309.824,157.776)..(309.292,155.550)..(308.389,153.322)..(307.088,151.093) ..(305.350,148.872)..(303.122,146.678)..(300.333,144.548)..(296.895,142.549)..(292.709,140.798) ..(287.686,139.487)..(281.802,138.895)..(275.181,139.353)..(268.145,141.103)..(261.112,144.139) ..(254.394,148.203)..(248.098,152.948)..(242.176,158.067)..(236.513,163.331)..(230.987,168.579) ..(225.489,173.687)..(219.940,178.552)..(214.289,183.085)..(208.517,187.208)..(202.635,190.856) ..(196.678,193.985)..(190.690,196.578)..(184.720,198.641)..(178.800,200.203)..(172.949,201.303) ..(167.160,201.980)..(161.412,202.265)..(155.673,202.170)..(149.909,201.693)..(144.090,200.809) ..(138.204,199.483)..(132.256,197.674)..(126.271,195.349)..(120.293,192.487)..(114.368,189.094) ..(108.538,185.202)..(102.827,180.865)..(97.231,176.156)..(91.716,171.157)..(86.216,165.966) ..(80.636,160.692)..(74.860,155.477)..(68.762,150.512)..(62.254,146.064)..(55.352,142.472) ..(48.267,140.060)..(41.388,138.973)..(35.108,139.080)..(29.650,140.072)..(25.054,141.633) ..(21.255,143.526)..(18.153,145.602)..(15.655,147.770)..(13.680,149.981)..(12.166,152.207) ..(11.068,154.436)..(10.353,156.664)..(10.000,158.888)..(10.000,161.112)..(10.353,163.336) ..(11.068,165.564)..(12.166,167.793)..(13.680,170.019)..(15.655,172.230)..(18.153,174.398) ..(21.255,176.474)..(25.054,178.367)..(29.650,179.928)..(35.108,180.920)..(41.388,181.027) ..(48.267,179.940)..(55.352,177.528)..(62.254,173.936)..(68.762,169.488)..(74.860,164.523) ..(80.636,159.308)..(86.216,154.034)..(91.716,148.843)..(97.231,143.844)..(102.827,139.135) ..(108.538,134.798)..(114.368,130.906)..(120.293,127.513)..(126.271,124.651)..(132.256,122.326) ..(138.204,120.517)..(144.090,119.191)..(149.909,118.307)..(155.673,117.830)..(161.412,117.735) ..(167.160,118.020)..(172.949,118.697)..(178.800,119.797)..(184.720,121.359)..(190.690,123.422) ..(196.678,126.015)..(202.635,129.144)..(208.517,132.792)..(214.289,136.915)..(219.940,141.448) ..(225.489,146.313)..(230.987,151.421)..(236.513,156.669)..(242.176,161.933)..(248.098,167.052) ..(254.394,171.797)..(261.112,175.861)..(268.145,178.897)..(275.181,180.647)..(281.802,181.105) ..(287.686,180.513)..(292.709,179.202)..(296.895,177.451)..(300.333,175.452)..(303.122,173.322) ..(305.350,171.128)..(307.088,168.907)..(308.389,166.678)..(309.292,164.450)..(309.824,162.224) ..(310.000,160.000); b := 25; d := 125; 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