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Added helper function for aabb_circle routines

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Clamps point coords to the dimensions of an aabb to get the nearest point on the aabb. Returns two integers to avoid garbage.
This commit is contained in:
Aweptimum 2021-05-10 11:55:00 -04:00
parent 9d1e563796
commit bfee65762e
1 changed files with 11 additions and 0 deletions
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11
intersect.lua
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@ -417,6 +417,17 @@ function intersect.aabb_aabb_collide_continuous(
return false
end
-- helper function to clamp point to aabb
local _v_min = vec2:zero()
local _v_max = vec2:zero()
local _v_clamp = vec2:zero()
local function aabb_clamp(pos, hs, v)
_v_min:sset(pos.x-hs.x, pos.y-hs.y)
_v_max:sset(pos.x+hs.x, pos.y+hs.y)
_v_clamp:vset(v):clampi(_v_min,_v_max)
return _v_clamp.x, _v_clamp.y
end
--check if a point is in a polygon
--point is the point to test
--poly is a list of points in order