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<jsxgraph width="600" height="600"> var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,5,5,-5], axis:true}); var P0 = brd.create('point', [-4,-1], {name:'', face:'[]'}); var P1 = brd.create('point', [4,-1], {name:'', face:'[]'}); var li = brd.create('line', [P0,P1]); var A = brd.create('glider', [0,-1,li], {name:'A'}); var B = brd.create('glider', [-3,-1,li], {name:'B'}); var C = brd.create('glider', [ 3,-1,li], {name:'C'}); brd.on('update', function() { var o; if (typeof brd.touches != 'undefined' && brd.touches.length>0) { o = brd.touches[0].obj; } else if (brd.mouse!=null && typeof brd.mouse.obj != 'undefined') { o = brd.mouse.obj; } else { return; } if (o==A) { B.position = A.position - 0.3; B.prepareUpdate().update(true).updateRenderer(); C.setPositionDirectly(JXG.COORDS_BY_USER, [A.X()+3, C.Y()]); C.prepareUpdate().update().updateRenderer(); } else if (o==B) { A.position = B.position + 0.3; A.prepareUpdate().update(true).updateRenderer(); C.setPositionDirectly(JXG.COORDS_BY_USER, [A.X()+3, C.Y()]); C.prepareUpdate().update().updateRenderer(); } else if (o==C) { A.setPositionDirectly(JXG.COORDS_BY_USER, [C.X()-3, A.Y()]); A.prepareUpdate().update().updateRenderer(); B.position = A.position - 0.3; B.prepareUpdate().update(true).updateRenderer(); } }); </jsxgraph> ===The underlying JavaScript code=== <source lang="javascript"> var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,5,5,-5], axis:true}); var P0 = brd.create('point', [-4,-1], {name:'', face:'[]'}); var P1 = brd.create('point', [4,-1], {name:'', face:'[]'}); var li = brd.create('line', [P0,P1]); var A = brd.create('glider', [0,-1,li], {name:'A'}); var B = brd.create('glider', [-3,-1,li], {name:'B'}); var C = brd.create('glider', [ 3,-1,li], {name:'C'}); brd.on('update', function() { var o; if (typeof brd.touches != 'undefined' && brd.touches.length>0) { o = brd.touches[0].obj; } else if (brd.mouse!=null && typeof brd.mouse.obj != 'undefined') { o = brd.mouse.obj; } else { return; } if (o==A) { B.position = A.position - 0.3; B.prepareUpdate().update(true).updateRenderer(); C.setPositionDirectly(JXG.COORDS_BY_USER, [A.X()+3, C.Y()]); C.prepareUpdate().update().updateRenderer(); } else if (o==B) { A.position = B.position + 0.3; A.prepareUpdate().update(true).updateRenderer(); C.setPositionDirectly(JXG.COORDS_BY_USER, [A.X()+3, C.Y()]); C.prepareUpdate().update().updateRenderer(); } else if (o==C) { A.setPositionDirectly(JXG.COORDS_BY_USER, [C.X()-3, A.Y()]); A.prepareUpdate().update().updateRenderer(); B.position = A.position - 0.3; B.prepareUpdate().update(true).updateRenderer(); } }); </source> [[Category:Examples]]

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