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[vec] Fix sqrdist* functions.

This commit is contained in:
Lorenzo Cogotti 2023-03-04 08:32:16 +01:00
parent 99fde174df
commit 9928899df1
1 changed files with 2 additions and 2 deletions
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vec.lua
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@ -148,14 +148,14 @@ end
function vec.sqrdist(x1,y1, x2,y2) function vec.sqrdist(x1,y1, x2,y2)
local dx,dy = x2-x1, y2-y1 local dx,dy = x2-x1, y2-y1
return dx*dx, dy*dy -- vec.sqrlen(dx,dy) return dx*dx + dy*dy -- vec.sqrlen(dx,dy)
end end
--- vec.sqrdist() equivalent for 3D vectors. --- vec.sqrdist() equivalent for 3D vectors.
function vec.sqrdist3(x1,y1,z1, x2,y2,z2) function vec.sqrdist3(x1,y1,z1, x2,y2,z2)
local dx,dy,dz = x2-x1, y2-y1, z2-z1 local dx,dy,dz = x2-x1, y2-y1, z2-z1
return dx*dx, dy*dy, dz*dz return dx*dx + dy*dy + dz*dz
end end
--- Calculate the distance between two vectors/points. --- Calculate the distance between two vectors/points.