mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-12-04 13:03:59 +01:00
73 lines
2.3 KiB
Lua
73 lines
2.3 KiB
Lua
local wea_c = worldeditadditions_core
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local Vector3 = wea_c.Vector3
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---
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-- @module worldeditadditions
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-- ███████ ██ ██ ██ ██████ ███████ ███████
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-- ██ ██ ██ ██ ██ ██ ██ ██
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-- █████ ██ ██ ██ ██████ ███████ █████
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-- ██ ██ ██ ██ ██ ██ ██
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-- ███████ ███████ ███████ ██ ██ ███████ ███████
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function worldeditadditions.ellipsoid2(pos1, pos2, target_node, hollow)
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pos1, pos2 = Vector3.sort(pos1, pos2)
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local volume = pos2 - pos1
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local volume_half = volume / 2
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local radius = (pos2 - pos1) / 2
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-- print("DEBUG:ellipsoid2 | pos1: "..pos1..", pos2: "..pos2..", target_node: "..target_node)
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-- print("DEBUG:ellipsoid2 radius", radius)
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-- position = { x, y, z }
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local hollow_inner_radius = radius - 1
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-- Fetch the nodes in the specified area
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local manip, area = worldedit.manip_helpers.init(pos1, pos2)
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local data = manip:get_data()
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local node_id = minetest.get_content_id(target_node)
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local count = 0 -- The number of nodes replaced
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for z = pos2.z, pos1.z, -1 do
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for y = pos2.y, pos1.y, -1 do
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for x = pos2.x, pos1.x, -1 do
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local here = Vector3.new(x, y, z)
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local pos_relative = (here - pos1) - volume_half
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-- print("DEBUG pos1", pos1, "pos2", pos2, "volume_half", volume_half, "pos_relative", pos_relative)
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-- If we're inside the ellipse, then fill it in
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local comp = pos_relative / radius
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local ellipsoid_dist = comp:length_squared()
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if ellipsoid_dist <= 1 then
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local place_ok = not hollow;
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if not place_ok then
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-- It must be hollow! Do some additional calculations.
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local h_comp = here / hollow_inner_radius
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-- It's only ok to place it if it's outside our inner ellipse
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place_ok = Vector3.dot(h_comp, h_comp) >= 1
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end
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if place_ok then
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data[area:index(x, y, z)] = node_id
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count = count + 1
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end
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end
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end
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end
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end
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-- Save the modified nodes back to disk & return
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worldedit.manip_helpers.finish(manip, data)
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return count
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end
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