path trajectoire; trajectoire = (160.000,160.000)..(164.915,162.376)..(170.042,164.729)..(175.664,166.978)..(182.221,168.786) ..(190.013,169.056)..(197.812,166.682)..(204.389,162.795)..(210.046,158.523)..(215.215,154.237) ..(220.156,150.070)..(225.020,146.092)..(229.895,142.366)..(234.827,138.954)..(239.825,135.914) ..(244.868,133.293)..(249.917,131.123)..(254.922,129.414)..(259.838,128.161)..(264.630,127.346) ..(269.274,126.947)..(273.756,126.942)..(278.066,127.314)..(282.192,128.048)..(286.127,129.136) ..(289.855,130.567)..(293.358,132.336)..(296.610,134.434)..(299.580,136.847)..(302.235,139.553) ..(304.542,142.524)..(306.472,145.727)..(308.000,149.121)..(309.106,152.664)..(309.776,156.306) ..(310.000,160.000)..(309.776,163.694)..(309.106,167.336)..(308.000,170.879)..(306.472,174.273) ..(304.542,177.476)..(302.235,180.447)..(299.580,183.153)..(296.610,185.566)..(293.358,187.664) ..(289.855,189.433)..(286.127,190.864)..(282.192,191.952)..(278.066,192.686)..(273.756,193.058) ..(269.274,193.053)..(264.630,192.654)..(259.838,191.839)..(254.922,190.586)..(249.917,188.877) ..(244.868,186.707)..(239.825,184.086)..(234.827,181.046)..(229.895,177.634)..(225.020,173.908) ..(220.156,169.930)..(215.215,165.763)..(210.046,161.477)..(204.389,157.205)..(197.812,153.318) ..(190.013,150.944)..(182.221,151.214)..(175.664,153.022)..(170.042,155.271)..(164.915,157.624) ..(160.000,160.000)..(155.085,162.376)..(149.958,164.729)..(144.336,166.978)..(137.779,168.786) ..(129.987,169.056)..(122.188,166.682)..(115.611,162.795)..(109.954,158.523)..(104.785,154.237) ..(99.844,150.070)..(94.980,146.092)..(90.105,142.366)..(85.173,138.954)..(80.175,135.914) ..(75.132,133.293)..(70.083,131.123)..(65.078,129.414)..(60.162,128.161)..(55.370,127.346) ..(50.726,126.947)..(46.244,126.942)..(41.934,127.314)..(37.808,128.048)..(33.873,129.136) ..(30.145,130.567)..(26.642,132.336)..(23.390,134.434)..(20.420,136.847)..(17.765,139.553) ..(15.458,142.524)..(13.528,145.727)..(12.000,149.121)..(10.894,152.664)..(10.224,156.306) ..(10.000,160.000)..(10.224,163.694)..(10.894,167.336)..(12.000,170.879)..(13.528,174.273) ..(15.458,177.476)..(17.765,180.447)..(20.420,183.153)..(23.390,185.566)..(26.642,187.664) ..(30.145,189.433)..(33.873,190.864)..(37.808,191.952)..(41.934,192.686)..(46.244,193.058) ..(50.726,193.053)..(55.370,192.654)..(60.162,191.839)..(65.078,190.586)..(70.083,188.877) ..(75.132,186.707)..(80.175,184.086)..(85.173,181.046)..(90.105,177.634)..(94.980,173.908) ..(99.844,169.930)..(104.785,165.763)..(109.954,161.477)..(115.611,157.205)..(122.188,153.318) ..(129.987,150.944)..(137.779,151.214)..(144.336,153.022)..(149.958,155.271)..(155.085,157.624) ..(160.000,160.000); b := 20; d := 140; 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