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Add vector.dot and vector.cross
Mostly copied from MarkuBu's code
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@ -79,6 +79,18 @@ function vector.angle(a, b)
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return math.atan2(crossplen, dotp)
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end
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function vector.dot(a, b)
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return a.x * b.x + a.y * b.y + a.z * b.z
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end
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function vector.cross(a, b)
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return {
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x = a.y * b.z - a.z * b.y,
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y = a.z * b.x - a.x * b.z,
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z = a.x * b.y - a.y * b.x
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}
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end
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function vector.add(a, b)
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if type(b) == "table" then
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return {x = a.x + b.x,
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@ -2517,6 +2517,10 @@ For the following functions, `v`, `v1`, `v2` are vectors,
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* Returns in order minp, maxp vectors of the cuboid defined by `v1`, `v2`.
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* `vector.angle(v1, v2)`:
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* Returns the angle between `v1` and `v2` in radians.
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* `vector.dot(v1, v2)`
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* Returns the dot product of `v1` and `v2`
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* `vector.cross(v1, v2)`
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* Returns the cross product of `v1` and `v2`
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For the following functions `x` can be either a vector or a number:
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