Dual lattice: Difference between revisions
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A WASSERMANN (talk | contribs) No edit summary |
A WASSERMANN (talk | contribs) No edit summary |
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w1 = brd.create('arrow', [[0,0], function() { | w1 = brd.create('arrow', [[0,0], function() { | ||
var num = b1.X() * b2.Y() - b2.X() * b1.Y(); | |||
}], {}); | return [b2.Y() / num, -b2.X() / num]; | ||
}], {strokeColor: 'red'}); | |||
