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-- please keep any non-generic nodeboxe with its node definition
-- this file should not accumulate any left over nodeboxes
-- but is meant to host any abstractions or calculations based on nodeboxes
-- a box is defined as {x1, y1, z1, x2, y2, z2}
homedecor.box = {
-- slab starting from -x (after rotation: left)
slab_x = function(depth) return { -0.5, -0.5, -0.5, -0.5+depth, 0.5, 0.5 } end,
-- bottom slab (starting from -y) with height optionally shifted upwards
slab_y = function(height, shift) return { -0.5, -0.5+(shift or 0), -0.5, 0.5, -0.5+height+(shift or 0), 0.5 } end,
-- slab starting from -z (+z with negative depth)
slab_z = function(depth)
-- for consistency with the other functions here, we have to assume that a "z" slab starts from -z and extends by depth,
-- but since conventionally a lot of nodes place slabs against +z for player convenience, we define
-- a "negative" depth as a depth extending from the other side, i.e. +z
if depth > 0 then
-- slab starting from -z
return { -0.5, -0.5, -0.5, 0.5, 0.5, -0.5+depth }
else
-- slab starting from +z (z1=0.5-(-depth))
return { -0.5, -0.5, 0.5+depth, 0.5, 0.5, 0.5 }
end
end,
bar_y = function(radius) return {-radius, -0.5, -radius, radius, 0.5, radius} end,
cuboid = function(radius_x, radius_y, radius_z) return {-radius_x, -radius_y, -radius_z, radius_x, radius_y, radius_z} end,
}
homedecor.nodebox = {
-- { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
-- can be used in-place as:
-- { type="regular" },
regular = { type="regular" },
null = { type = "fixed", fixed = { 0, 0, 0, 0, 0, 0 } },
corner_xz = function(depth_x, depth_z) return {
type="fixed",
fixed={
homedecor.box.slab_x(depth_x),
homedecor.box.slab_z(depth_z),
-- { -0.5, -0.5, -0.5, 0.5-depth, 0.5, -0.5+depth } -- slab_x without the overlap, but actually looks a bit worse
}
} end,
}
local mt = {}
mt.__index = function(table, key)
local ref = homedecor.box[key]
local ref_type = type(ref)
if ref_type == "function" then
return function(...)
return { type = "fixed", fixed = ref(...) }
end
elseif ref_type == "table" then
return { type = "fixed", fixed = ref }
elseif ref_type == "nil" then
error(key .. "could not be found among nodebox presets and functions")
end
error("unexpected datatype " .. tostring(type(ref)) .. " while looking for " .. key)
end
setmetatable(homedecor.nodebox, mt)
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