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First commit for fine pointed (#5485)

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MarkuBu 2017-04-01 16:50:53 +02:00 committed by Nils Dagsson Moskopp
parent 67ca4f86c5
commit 61efcfec7d
Signed by: erle
GPG Key ID: A3BC671C35191080
1 changed files with 32 additions and 0 deletions
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32
builtin/common/misc_helpers.lua
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@ -691,3 +691,35 @@ end
function core.strip_colors(str)
return (str:gsub(ESCAPE_CHAR .. "%([bc]@[^)]+%)", ""))
end
--------------------------------------------------------------------------------
-- Returns the exact coordinate of a pointed surface
--------------------------------------------------------------------------------
function core.pointed_thing_to_face_pos(placer, pointed_thing)
local eye_offset_first = placer:get_eye_offset()
local node_pos = pointed_thing.under
local camera_pos = placer:get_pos()
local pos_off = vector.multiply(
vector.subtract(pointed_thing.above, node_pos), 0.5)
local look_dir = placer:get_look_dir()
local offset, nc
local oc = {}
for c, v in pairs(pos_off) do
if v == 0 then
oc[#oc + 1] = c
else
offset = v
nc = c
end
end
local fine_pos = {[nc] = node_pos[nc] + offset}
camera_pos.y = camera_pos.y + 1.625 + eye_offset_first.y / 10
local f = (node_pos[nc] + offset - camera_pos[nc]) / look_dir[nc]
for i = 1, #oc do
fine_pos[oc[i]] = camera_pos[oc[i]] + look_dir[oc[i]] * f
end
return fine_pos
end