path trajectoire; trajectoire = (160.000,160.000)..(162.107,162.206)..(164.222,164.387)..(166.351,166.519)..(168.491,168.578) ..(170.636,170.547)..(172.772,172.415)..(174.885,174.183)..(176.964,175.862)..(179.006,177.463) ..(181.011,179.000)..(182.984,180.483)..(184.929,181.920)..(186.852,183.316)..(188.759,184.673) ..(190.654,185.995)..(192.539,187.282)..(194.419,188.534)..(196.295,189.752)..(198.169,190.937) ..(200.042,192.086)..(201.916,193.202)..(203.789,194.282)..(205.665,195.328)..(207.541,196.338) ..(209.420,197.314)..(211.300,198.253)..(213.182,199.157)..(215.067,200.025)..(216.954,200.856) ..(218.843,201.650)..(220.735,202.406)..(222.629,203.125)..(224.525,203.805)..(226.424,204.447) ..(228.325,205.049)..(230.228,205.611)..(232.132,206.133)..(234.039,206.614)..(235.946,207.053) ..(237.854,207.450)..(239.762,207.804)..(241.669,208.115)..(243.575,208.382)..(245.480,208.604) ..(247.382,208.781)..(249.280,208.912)..(251.174,208.997)..(253.063,209.035)..(254.945,209.026) ..(256.820,208.969)..(258.687,208.864)..(260.544,208.710)..(262.390,208.507)..(264.224,208.254) ..(266.045,207.952)..(267.851,207.600)..(269.642,207.198)..(271.415,206.746)..(273.168,206.243) ..(274.902,205.690)..(276.613,205.086)..(278.301,204.432)..(279.964,203.728)..(281.600,202.974) ..(283.207,202.170)..(284.783,201.317)..(286.328,200.416)..(287.839,199.466)..(289.314,198.468) ..(290.752,197.424)..(292.151,196.333)..(293.509,195.198)..(294.825,194.018)..(296.096,192.796) ..(297.321,191.531)..(298.499,190.226)..(299.628,188.881)..(300.705,187.499)..(301.730,186.081) ..(302.701,184.627)..(303.617,183.141)..(304.477,181.624)..(305.278,180.077)..(306.020,178.503) ..(306.701,176.904)..(307.321,175.281)..(307.878,173.637)..(308.372,171.974)..(308.802,170.295) ..(309.167,168.601)..(309.466,166.896)..(309.699,165.180)..(309.866,163.458)..(309.967,161.730) ..(310.000,160.000)..(309.967,158.270)..(309.866,156.542)..(309.699,154.820)..(309.466,153.104) ..(309.167,151.399)..(308.802,149.705)..(308.372,148.026)..(307.878,146.363)..(307.321,144.719) ..(306.701,143.096)..(306.020,141.497)..(305.278,139.923)..(304.477,138.376)..(303.617,136.859) ..(302.701,135.373)..(301.730,133.919)..(300.705,132.501)..(299.628,131.119)..(298.499,129.774) ..(297.321,128.469)..(296.096,127.204)..(294.825,125.982)..(293.509,124.802)..(292.151,123.667) ..(290.752,122.576)..(289.314,121.532)..(287.839,120.534)..(286.328,119.584)..(284.783,118.683) ..(283.207,117.830)..(281.600,117.026)..(279.964,116.272)..(278.301,115.568)..(276.613,114.914) ..(274.902,114.310)..(273.168,113.757)..(271.415,113.254)..(269.642,112.802)..(267.851,112.400) ..(266.045,112.048)..(264.224,111.746)..(262.390,111.493)..(260.544,111.290)..(258.687,111.136) ..(256.820,111.031)..(254.945,110.974)..(253.063,110.965)..(251.174,111.003)..(249.280,111.088) ..(247.382,111.219)..(245.480,111.396)..(243.575,111.618)..(241.669,111.885)..(239.762,112.196) ..(237.854,112.550)..(235.946,112.947)..(234.039,113.386)..(232.132,113.867)..(230.228,114.389) ..(228.325,114.951)..(226.424,115.553)..(224.525,116.195)..(222.629,116.875)..(220.735,117.594) ..(218.843,118.350)..(216.954,119.144)..(215.067,119.975)..(213.182,120.843)..(211.300,121.747) ..(209.420,122.686)..(207.541,123.662)..(205.665,124.672)..(203.789,125.718)..(201.916,126.798) ..(200.042,127.914)..(198.169,129.063)..(196.295,130.248)..(194.419,131.466)..(192.539,132.718) ..(190.654,134.005)..(188.759,135.327)..(186.852,136.684)..(184.929,138.080)..(182.984,139.517) ..(181.011,141.000)..(179.006,142.537)..(176.964,144.138)..(174.885,145.817)..(172.772,147.585) ..(170.636,149.453)..(168.491,151.422)..(166.351,153.481)..(164.222,155.613)..(162.107,157.794) ..(160.000,160.000)..(157.893,162.206)..(155.778,164.387)..(153.649,166.519)..(151.509,168.578) ..(149.364,170.547)..(147.228,172.415)..(145.115,174.183)..(143.036,175.862)..(140.994,177.463) ..(138.989,179.000)..(137.016,180.483)..(135.071,181.920)..(133.148,183.316)..(131.241,184.673) ..(129.346,185.995)..(127.461,187.282)..(125.581,188.534)..(123.705,189.752)..(121.831,190.937) ..(119.958,192.086)..(118.084,193.202)..(116.211,194.282)..(114.335,195.328)..(112.459,196.338) ..(110.580,197.314)..(108.700,198.253)..(106.818,199.157)..(104.933,200.025)..(103.046,200.856) ..(101.157,201.650)..(99.265,202.406)..(97.371,203.125)..(95.475,203.805)..(93.576,204.447) ..(91.675,205.049)..(89.772,205.611)..(87.868,206.133)..(85.961,206.614)..(84.054,207.053) ..(82.146,207.450)..(80.238,207.804)..(78.331,208.115)..(76.425,208.382)..(74.520,208.604) ..(72.618,208.781)..(70.720,208.912)..(68.826,208.997)..(66.937,209.035)..(65.055,209.026) ..(63.180,208.969)..(61.313,208.864)..(59.456,208.710)..(57.610,208.507)..(55.776,208.254) ..(53.955,207.952)..(52.149,207.600)..(50.358,207.198)..(48.585,206.746)..(46.832,206.243) ..(45.098,205.690)..(43.387,205.086)..(41.699,204.432)..(40.036,203.728)..(38.400,202.974) ..(36.793,202.170)..(35.217,201.317)..(33.672,200.416)..(32.161,199.466)..(30.686,198.468) ..(29.248,197.424)..(27.849,196.333)..(26.491,195.198)..(25.175,194.018)..(23.904,192.796) ..(22.679,191.531)..(21.501,190.226)..(20.372,188.881)..(19.295,187.499)..(18.270,186.081) ..(17.299,184.627)..(16.383,183.141)..(15.523,181.624)..(14.722,180.077)..(13.980,178.503) ..(13.299,176.904)..(12.679,175.281)..(12.122,173.637)..(11.628,171.974)..(11.198,170.295) ..(10.833,168.601)..(10.534,166.896)..(10.301,165.180)..(10.134,163.458)..(10.033,161.730) ..(10.000,160.000)..(10.033,158.270)..(10.134,156.542)..(10.301,154.820)..(10.534,153.104) ..(10.833,151.399)..(11.198,149.705)..(11.628,148.026)..(12.122,146.363)..(12.679,144.719) ..(13.299,143.096)..(13.980,141.497)..(14.722,139.923)..(15.523,138.376)..(16.383,136.859) ..(17.299,135.373)..(18.270,133.919)..(19.295,132.501)..(20.372,131.119)..(21.501,129.774) ..(22.679,128.469)..(23.904,127.204)..(25.175,125.982)..(26.491,124.802)..(27.849,123.667) ..(29.248,122.576)..(30.686,121.532)..(32.161,120.534)..(33.672,119.584)..(35.217,118.683) ..(36.793,117.830)..(38.400,117.026)..(40.036,116.272)..(41.699,115.568)..(43.387,114.914) ..(45.098,114.310)..(46.832,113.757)..(48.585,113.254)..(50.358,112.802)..(52.149,112.400) ..(53.955,112.048)..(55.776,111.746)..(57.610,111.493)..(59.456,111.290)..(61.313,111.136) ..(63.180,111.031)..(65.055,110.974)..(66.937,110.965)..(68.826,111.003)..(70.720,111.088) ..(72.618,111.219)..(74.520,111.396)..(76.425,111.618)..(78.331,111.885)..(80.238,112.196) ..(82.146,112.550)..(84.054,112.947)..(85.961,113.386)..(87.868,113.867)..(89.772,114.389) ..(91.675,114.951)..(93.576,115.553)..(95.475,116.195)..(97.371,116.875)..(99.265,117.594) ..(101.157,118.350)..(103.046,119.144)..(104.933,119.975)..(106.818,120.843)..(108.700,121.747) ..(110.580,122.686)..(112.459,123.662)..(114.335,124.672)..(116.211,125.718)..(118.084,126.798) ..(119.958,127.914)..(121.831,129.063)..(123.705,130.248)..(125.581,131.466)..(127.461,132.718) ..(129.346,134.005)..(131.241,135.327)..(133.148,136.684)..(135.071,138.080)..(137.016,139.517) ..(138.989,141.000)..(140.994,142.537)..(143.036,144.138)..(145.115,145.817)..(147.228,147.585) ..(149.364,149.453)..(151.509,151.422)..(153.649,153.481)..(155.778,155.613)..(157.893,157.794) ..(160.000,160.000); b := 20; d := 380; 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