Mirrorlandia_minetest/modlib
1
0
Fork 0
mirror of https://github.com/appgurueu/modlib.git synced 2024-11-26 01:03:46 +01:00
Code Issues Projects Releases Wiki Activity

Improve vector utils

Browse Source
This commit is contained in:
Lars Mueller 2020-12-19 15:28:53 +01:00
parent cc7a22ea76
commit 2f01c5716b
1 changed files with 20 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
vector.lua
View File

@ -9,6 +9,10 @@ function from_xyzw(v)
return new{v.x, v.y, v.z, v.w} return new{v.x, v.y, v.z, v.w}
end end
function from_minetest(v)
return new{v.x, v.y, v.z}
end
function to_xyzw(v) function to_xyzw(v)
return {x = v[1], y = v[2], z = v[3], w = v[4]} return {x = v[1], y = v[2], z = v[3], w = v[4]}
end end
@ -25,10 +29,10 @@ function combine(v1, v2, f)
return new(new_vector) return new(new_vector)
end end
function apply(v, s, f) function apply(v, f, ...)
local new_vector = {} local new_vector = {}
for key, value in pairs(v) do for key, value in pairs(v) do
new_vector[key] = f(value, s) new_vector[key] = f(value, ...)
end end
return new(new_vector) return new(new_vector)
end end
@ -36,8 +40,8 @@ end
function combinator(f) function combinator(f)
return function(v1, v2) return function(v1, v2)
return combine(v1, v2, f) return combine(v1, v2, f)
end, function(v, s) end, function(v, ...)
return apply(v, s, f) return apply(v, f, ...)
end end
end end
@ -60,4 +64,16 @@ end
function normalize(v) function normalize(v)
return divide_scalar(v, length(v)) return divide_scalar(v, length(v))
end
function floor(v)
return apply(v, math.floor)
end
function ceil(v)
return apply(v, math.ceil)
end
function clamp(v, min, max)
return apply(apply(v, math.max, min), math.min, max)
end end