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Add vector.angle

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Lars Mueller 2021-03-24 10:36:28 +01:00
parent 0d1c5596a6
commit f0f48c0fb4
1 changed files with 7 additions and 0 deletions
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7
vector.lua
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@ -175,6 +175,13 @@ function dot(v, other_v)
return sum return sum
end end
--+ Angle between two vectors
--> Signed angle in radians
function angle(v, other_v)
-- Based on dot(v, w) = |v| * |w| * cos(x)
return math.acos(dot(v, other_v) / length(v) / length(other_v))
end
function box_box_collision(diff, box, other_box) function box_box_collision(diff, box, other_box)
for index, diff in pairs(diff) do for index, diff in pairs(diff) do
if box[index] + diff > other_box[index + 3] or other_box[index] > box[index + 3] + diff then if box[index] + diff > other_box[index + 3] or other_box[index] > box[index + 3] + diff then