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<jsxgraph height="500" width="600" board="board" box="jxgbox"> board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox: [-5, 5, 7, -5]}); board.suspendUpdate(); var p = []; p[0] = board.create('point', [-1,2], {size:2,name:''}); p[1] = board.create('point', [0,-2], {size:2,name:''}); p[2] = board.create('point', [2,1], {size:2,name:''}); graph = board.create('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5}); gliders = []; gliders[0] = board.create('glider', [-1,0,graph],{size:4}); gliders[1] = board.create('glider', [-0.5,-2,graph],{size:4}); gliders[2] = board.create('glider', [1,-3,graph],{size:4}); gliders[3] = board.create('glider', [1.5,-1,graph],{size:4}); board.create('polygon',gliders,{strokeColor:'red'}); board.updateConditions = function() { var i; for (i=1;i<gliders.length;i++) { if (gliders[i].position<gliders[i-1].position) { gliders[i].coords = new JXG.Coords(JXG.COORDS_BY_USER, gliders[i-1].coords.usrCoords, board); gliders[i].update(); } }; } board.unsuspendUpdate(); </jsxgraph> ===The underlying JavaScript code=== <source lang="javascript"> board = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox: [-5, 5, 7, -5]}); board.suspendUpdate(); var p = []; p[0] = board.create('point', [-1,2], {size:2,name:''}); p[1] = board.create('point', [0,-2], {size:2,name:''}); p[2] = board.create('point', [2,1], {size:2,name:''}); graph = board.create('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5}); gliders = []; gliders[0] = board.create('glider', [-1,0,graph],{size:4}); gliders[1] = board.create('glider', [-0.5,-2,graph],{size:4}); gliders[2] = board.create('glider', [1,-3,graph],{size:4}); gliders[3] = board.create('glider', [1.5,-1,graph],{size:4}); board.create('polygon',gliders,{strokeColor:'red'}); board.updateConditions = function() { var i; for (i=1;i<gliders.length;i++) { if (gliders[i].position<gliders[i-1].position) { gliders[i].coords = new JXG.Coords(JXG.COORDS_BY_USER, gliders[i-1].coords.usrCoords, board); gliders[i].update(); } }; } board.unsuspendUpdate(); </source> [[Category:Examples]]

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