# Difference between revisions of "Dual lattice"

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A WASSERMANN (talk | contribs) |
A WASSERMANN (talk | contribs) |
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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: 'black'}); | + | }], {strokeColor: 'black', name:"1'", withLabel:true, label:{position:'rt'}}); |

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: 'red', name:"2'", | + | }], {strokeColor: 'red', name:"2'", withLabel:true, label:{position:'rt'}}); |