path trajectoire; trajectoire = (160.000,160.000)..(164.960,164.278)..(170.012,168.419)..(175.223,172.274)..(180.609,175.679) ..(186.108,178.491)..(191.594,180.645)..(196.942,182.180)..(202.091,183.203)..(207.060,183.827) ..(211.913,184.123)..(216.733,184.111)..(221.595,183.762)..(226.546,183.012)..(231.587,181.773) ..(236.669,179.972)..(241.706,177.582)..(246.615,174.642)..(251.351,171.241)..(255.928,167.498) ..(260.416,163.539)..(264.931,159.499)..(269.617,155.545)..(274.617,151.917)..(279.985,148.958) ..(285.561,147.050)..(290.925,146.382)..(295.657,146.779)..(299.570,147.877)..(302.691,149.363) ..(305.126,151.040)..(306.982,152.801)..(308.345,154.595)..(309.277,156.398)..(309.821,158.200) ..(310.000,160.000)..(309.821,161.800)..(309.277,163.602)..(308.345,165.405)..(306.982,167.199) ..(305.126,168.960)..(302.691,170.637)..(299.570,172.123)..(295.657,173.221)..(290.925,173.618) ..(285.561,172.950)..(279.985,171.042)..(274.617,168.083)..(269.617,164.455)..(264.931,160.501) ..(260.416,156.461)..(255.928,152.502)..(251.351,148.759)..(246.615,145.358)..(241.706,142.418) ..(236.669,140.028)..(231.587,138.227)..(226.546,136.988)..(221.595,136.238)..(216.733,135.889) ..(211.913,135.877)..(207.060,136.173)..(202.091,136.797)..(196.942,137.820)..(191.594,139.355) ..(186.108,141.509)..(180.609,144.321)..(175.223,147.726)..(170.012,151.581)..(164.960,155.722) ..(160.000,160.000)..(155.040,164.278)..(149.988,168.419)..(144.777,172.274)..(139.391,175.679) ..(133.892,178.491)..(128.406,180.645)..(123.058,182.180)..(117.909,183.203)..(112.940,183.827) ..(108.087,184.123)..(103.267,184.111)..(98.405,183.762)..(93.454,183.012)..(88.413,181.773) ..(83.331,179.972)..(78.294,177.582)..(73.385,174.642)..(68.649,171.241)..(64.072,167.498) ..(59.584,163.539)..(55.069,159.499)..(50.383,155.545)..(45.383,151.917)..(40.015,148.958) ..(34.439,147.050)..(29.075,146.382)..(24.343,146.779)..(20.430,147.877)..(17.309,149.363) ..(14.874,151.040)..(13.018,152.801)..(11.655,154.595)..(10.723,156.398)..(10.179,158.200) ..(10.000,160.000)..(10.179,161.800)..(10.723,163.602)..(11.655,165.405)..(13.018,167.199) ..(14.874,168.960)..(17.309,170.637)..(20.430,172.123)..(24.343,173.221)..(29.075,173.618) ..(34.439,172.950)..(40.015,171.042)..(45.383,168.083)..(50.383,164.455)..(55.069,160.501) ..(59.584,156.461)..(64.072,152.502)..(68.649,148.759)..(73.385,145.358)..(78.294,142.418) ..(83.331,140.028)..(88.413,138.227)..(93.454,136.988)..(98.405,136.238)..(103.267,135.889) ..(108.087,135.877)..(112.940,136.173)..(117.909,136.797)..(123.058,137.820)..(128.406,139.355) ..(133.892,141.509)..(139.391,144.321)..(144.777,147.726)..(149.988,151.581)..(155.040,155.722) ..(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