path trajectoire; trajectoire = (310.000,160.000)..(309.691,166.483)..(308.766,172.908)..(307.231,179.218)..(305.098,185.357) ..(302.384,191.269)..(299.108,196.902)..(295.295,202.209)..(290.972,207.144)..(286.170,211.668) ..(280.915,215.744)..(275.234,219.344)..(269.149,222.445)..(262.677,225.031)..(255.834,227.094) ..(248.630,228.633)..(241.072,229.652)..(233.168,230.163)..(224.923,230.171)..(216.337,229.678) ..(207.403,228.673)..(198.111,227.133)..(188.452,225.022)..(178.431,222.293)..(168.074,218.899) ..(157.426,214.809)..(146.546,210.031)..(135.482,204.611)..(124.253,198.628)..(112.836,192.169) ..(101.172,185.299)..(89.175,178.026)..(76.776,170.243)..(64.035,161.627)..(51.529,151.579) ..(40.774,140.001)..(32.742,128.302)..(26.784,117.704)..(22.115,108.472)..(18.322,100.562) ..(15.234,93.905)..(12.819,88.450)..(11.119,84.121)..(10.178,80.793)..(10.000,78.325) ..(10.563,76.596)..(11.833,75.511)..(13.769,74.997)..(16.334,75.005)..(19.494,75.499) ..(23.219,76.460)..(27.486,77.883)..(32.277,79.779)..(37.586,82.173)..(43.413,85.118) ..(49.769,88.702)..(56.671,93.075)..(64.119,98.512)..(71.995,105.513)..(79.700,114.856) ..(85.737,126.792)..(89.158,140.010)..(90.565,153.355)..(90.565,166.645)..(89.158,179.990) ..(85.737,193.208)..(79.700,205.144)..(71.995,214.487)..(64.119,221.488)..(56.671,226.925) ..(49.769,231.298)..(43.413,234.882)..(37.586,237.827)..(32.277,240.221)..(27.486,242.117) ..(23.219,243.540)..(19.494,244.501)..(16.334,244.995)..(13.769,245.003)..(11.833,244.489) ..(10.563,243.404)..(10.000,241.675)..(10.178,239.207)..(11.119,235.879)..(12.819,231.550) ..(15.234,226.095)..(18.322,219.438)..(22.115,211.528)..(26.784,202.296)..(32.742,191.698) ..(40.774,179.999)..(51.529,168.421)..(64.035,158.373)..(76.776,149.757)..(89.175,141.974) ..(101.172,134.701)..(112.836,127.831)..(124.253,121.372)..(135.482,115.389)..(146.546,109.969) ..(157.426,105.191)..(168.074,101.101)..(178.431,97.707)..(188.452,94.978)..(198.111,92.867) ..(207.403,91.327)..(216.337,90.322)..(224.923,89.829)..(233.168,89.837)..(241.072,90.348) ..(248.630,91.367)..(255.834,92.906)..(262.677,94.969)..(269.149,97.555)..(275.234,100.656) ..(280.915,104.256)..(286.170,108.332)..(290.972,112.856)..(295.295,117.791)..(299.108,123.098) ..(302.384,128.731)..(305.098,134.643)..(307.231,140.782)..(308.766,147.092)..(309.691,153.517) ..(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