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| author | HybridDog <ovvv@web.de> | 2019-07-14 11:45:55 +0200 |
|---|---|---|
| committer | sfan5 <sfan5@live.de> | 2019-07-16 21:44:42 +0200 |
| commit | 41229696be5878effa53a9a754766857d70f417d (patch) | |
| tree | fafac89f4327a87e309d68de07da99153adfbeaf | |
| parent | 71db715ba56369c67aa3187315601e2ae25d719a (diff) | |
| download | minetest-41229696be5878effa53a9a754766857d70f417d.tar.gz minetest-41229696be5878effa53a9a754766857d70f417d.tar.bz2 minetest-41229696be5878effa53a9a754766857d70f417d.zip | |
Use vector.dot and vector.cross in vector.angle
| -rw-r--r-- | builtin/common/vector.lua | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/builtin/common/vector.lua b/builtin/common/vector.lua index 782c137d6..ca6541eb4 100644 --- a/builtin/common/vector.lua +++ b/builtin/common/vector.lua @@ -71,11 +71,9 @@ 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) + local dotp = vector.dot(a, b) + local cp = vector.cross(a, b) + local crossplen = vector.length(cp) return math.atan2(crossplen, dotp) end |