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rowanwins/crossProductInRange.js

Created April 29, 2020 23:07
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crossProductInRange.js
function crossProduct (a, b) {
return (a.x * b.y) - (a.y * b.x)
}
const ab = crossProduct(A, B)
const ac = crossProduct(A, C)
const bd = crossProduct(B, D)
const cd = crossProduct(C, D)
const isInRange = (ab * bd < 0 && ac * cd > 0)
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