path trajectoire; trajectoire = (160.000,177.030)..(166.299,176.507)..(172.289,175.044)..(177.788,172.896)..(182.772,170.345) ..(187.330,167.590)..(191.567,164.733)..(195.562,161.821)..(199.364,158.892)..(203.023,155.985) ..(206.592,153.125)..(210.114,150.320)..(213.615,147.571)..(217.108,144.894)..(220.613,142.308) ..(224.151,139.834)..(227.739,137.480)..(231.381,135.256)..(235.077,133.182)..(238.823,131.282) ..(242.623,129.578)..(246.469,128.083)..(250.348,126.808)..(254.235,125.770)..(258.112,124.983) ..(261.958,124.456)..(265.752,124.187)..(269.466,124.170)..(273.074,124.396)..(276.551,124.859) ..(279.883,125.545)..(283.057,126.432)..(286.057,127.498)..(288.872,128.723)..(291.496,130.092) ..(293.929,131.587)..(296.174,133.186)..(298.231,134.870)..(300.100,136.625)..(301.784,138.442) ..(303.293,140.309)..(304.634,142.214)..(305.813,144.145)..(306.830,146.096)..(307.694,148.064) ..(308.413,150.046)..(308.994,152.034)..(309.441,154.024)..(309.755,156.013)..(309.939,158.005) ..(310.000,160.000)..(309.939,161.995)..(309.755,163.987)..(309.441,165.976)..(308.994,167.966) ..(308.413,169.954)..(307.694,171.936)..(306.830,173.904)..(305.813,175.855)..(304.634,177.786) ..(303.293,179.691)..(301.784,181.558)..(300.100,183.375)..(298.231,185.130)..(296.174,186.814) ..(293.929,188.413)..(291.496,189.908)..(288.872,191.277)..(286.057,192.502)..(283.057,193.568) ..(279.883,194.455)..(276.551,195.141)..(273.074,195.604)..(269.466,195.830)..(265.752,195.813) ..(261.958,195.544)..(258.112,195.017)..(254.235,194.230)..(250.348,193.192)..(246.469,191.917) ..(242.623,190.422)..(238.823,188.718)..(235.077,186.818)..(231.381,184.744)..(227.739,182.520) ..(224.151,180.166)..(220.613,177.692)..(217.108,175.106)..(213.615,172.429)..(210.114,169.680) ..(206.592,166.875)..(203.023,164.015)..(199.364,161.108)..(195.562,158.179)..(191.567,155.267) ..(187.330,152.410)..(182.772,149.655)..(177.788,147.104)..(172.289,144.956)..(166.299,143.493) ..(160.000,142.970)..(153.701,143.493)..(147.711,144.956)..(142.212,147.104)..(137.228,149.655) ..(132.670,152.410)..(128.433,155.267)..(124.438,158.179)..(120.636,161.108)..(116.977,164.015) ..(113.408,166.875)..(109.886,169.680)..(106.385,172.429)..(102.892,175.106)..(99.387,177.692) ..(95.849,180.166)..(92.261,182.520)..(88.619,184.744)..(84.923,186.818)..(81.177,188.718) ..(77.377,190.422)..(73.531,191.917)..(69.652,193.192)..(65.765,194.230)..(61.888,195.017) ..(58.042,195.544)..(54.248,195.813)..(50.534,195.830)..(46.926,195.604)..(43.449,195.141) ..(40.117,194.455)..(36.943,193.568)..(33.943,192.502)..(31.128,191.277)..(28.504,189.908) ..(26.071,188.413)..(23.826,186.814)..(21.769,185.130)..(19.900,183.375)..(18.216,181.558) ..(16.707,179.691)..(15.366,177.786)..(14.187,175.855)..(13.170,173.904)..(12.306,171.936) ..(11.587,169.954)..(11.006,167.966)..(10.559,165.976)..(10.245,163.987)..(10.061,161.995) ..(10.000,160.000)..(10.061,158.005)..(10.245,156.013)..(10.559,154.024)..(11.006,152.034) ..(11.587,150.046)..(12.306,148.064)..(13.170,146.096)..(14.187,144.145)..(15.366,142.214) ..(16.707,140.309)..(18.216,138.442)..(19.900,136.625)..(21.769,134.870)..(23.826,133.186) ..(26.071,131.587)..(28.504,130.092)..(31.128,128.723)..(33.943,127.498)..(36.943,126.432) ..(40.117,125.545)..(43.449,124.859)..(46.926,124.396)..(50.534,124.170)..(54.248,124.187) ..(58.042,124.456)..(61.888,124.983)..(65.765,125.770)..(69.652,126.808)..(73.531,128.083) ..(77.377,129.578)..(81.177,131.282)..(84.923,133.182)..(88.619,135.256)..(92.261,137.480) ..(95.849,139.834)..(99.387,142.308)..(102.892,144.894)..(106.385,147.571)..(109.886,150.320) ..(113.408,153.125)..(116.977,155.985)..(120.636,158.892)..(124.438,161.821)..(128.433,164.733) ..(132.670,167.590)..(137.228,170.345)..(142.212,172.896)..(147.711,175.044)..(153.701,176.507) ..(160.000,177.030); b := 50; d := 200; 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