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Added aabb_point_collide()

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Pushes point out along minimum axis. Nudges it out with COLLIDE_EPS added to the msv.
This commit is contained in:
Aweptimum 2021-05-10 11:53:40 -04:00
parent bc014db183
commit 9d1e563796
1 changed files with 20 additions and 0 deletions
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20
intersect.lua
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@ -232,6 +232,26 @@ function intersect.aabb_point_overlap(pos, hs, v)
return _apo_delta.x < hs.x and _apo_delta.y < hs.y return _apo_delta.x < hs.x and _apo_delta.y < hs.y
end end
-- discrete displacement
-- return msv to push point to closest edge of aabb
local _apo_delta_c = vec2:zero()
local _apo_delta_c_abs = vec2:zero()
local _apo_normal = vec2:zero()
function intersect.aabb_point_collide(pos, hs, v, into)
_apo_delta_c:vset(v):vsubi(pos)
_apo_delta_c_abs:vset(_apo_delta_c):absi()
if _apo_delta_c_abs.x < hs.x and _apo_delta_c_abs.y < hs.y then
into = into or vec2:zero()
-- ahh get the point outta here
_apo_normal:vset(hs):vsubi(_apo_delta_c_abs):minori()
_apo_delta_c:vmuli(_apo_normal):normalisei():smuli(_apo_normal:length())
-- nudge it a bit
into:vset(_apo_delta_c):vaddi(_apo_delta_c:normalisei():smuli(COLLIDE_EPS))
return into
end
return false
end
--return true on overlap, false otherwise --return true on overlap, false otherwise
local _aao_abs_delta = vec2:zero() local _aao_abs_delta = vec2:zero()
local _aao_total_size = vec2:zero() local _aao_total_size = vec2:zero()