mirror of
https://github.com/minetest/minetest.git
synced 2024-08-18 20:44:16 +02:00
Builtin: Add vector.angle(). Returns the angle between 2 vectors (#7738)
This commit is contained in:
parent
eadcbe474a
commit
7f1c2b8a00
@ -70,6 +70,15 @@ function vector.direction(pos1, pos2)
|
||||
})
|
||||
end
|
||||
|
||||
function vector.angle(a, b)
|
||||
local dotp = a.x * b.x + a.y * b.y + a.z * b.z
|
||||
local cpx = a.y * b.z - a.z * b.y
|
||||
local cpy = a.z * b.x - a.x * b.z
|
||||
local cpz = a.x * b.y - a.y * b.x
|
||||
local crossplen = math.sqrt(cpx ^ 2 + cpy ^ 2 + cpz ^ 2)
|
||||
return math.atan2(crossplen, dotp)
|
||||
end
|
||||
|
||||
function vector.add(a, b)
|
||||
if type(b) == "table" then
|
||||
return {x = a.x + b.x,
|
||||
|
@ -2399,6 +2399,8 @@ For the following functions, `v`, `v1`, `v2` are vectors,
|
||||
* Returns a boolean, `true` if the vectors are identical.
|
||||
* `vector.sort(v1, v2)`:
|
||||
* Returns in order minp, maxp vectors of the cuboid defined by `v1`, `v2`.
|
||||
* `vector.angle(v1, v2)`:
|
||||
* Returns the angle between `v1` and `v2` in radians.
|
||||
|
||||
For the following functions `x` can be either a vector or a number:
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user