Dual lattice: Difference between revisions

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Line 19: Line 19:
     var num = b1.X() * b2.Y() - b2.X() * b1.Y();
     var num = b1.X() * b2.Y() - b2.X() * b1.Y();
     return [b2.Y() / num,  -b2.X() / num];
     return [b2.Y() / num,  -b2.X() / num];
}], {strokeColor: 'red'});
}], {strokeColor: 'black'});


w2 = brd.create('arrow', [[0,0], function() {
w2 = brd.create('arrow', [[0,0], function() {
     var num = b1.X() * b2.Y() - b2.X() * b1.Y();
     var num = b1.X() * b2.Y() - b2.X() * b1.Y();
     return [-b1.Y() / num,  b1.X() / num];
     return [-b1.Y() / num,  b1.X() / num];
}], {strokeColor: 'black'});
}], {strokeColor: 'red', name:"2'", showLabel:true});





Revision as of 11:06, 20 June 2016