mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-11-01 05:43:01 +00:00
62 lines
3.1 KiB
Lua
62 lines
3.1 KiB
Lua
local wea_c = worldeditadditions_core
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local Vector3 = wea_c.Vector3
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-- ███████ ██ ██ ██ ██████ ███████ ██████ ██ ██████
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- █████ ██ ██ ██ ██████ ███████ ██ ██ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ███████ ███████ ███████ ██ ██ ███████ ██████ ██ ██████
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--
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-- █████ ██████ ██████ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ███████ ██████ ██████ ██ ████
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-- ██ ██ ██ ██ ██ ██
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-- ██ ██ ██ ██ ███████ ██
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--- Similar to cubeapply, except that it takes 2 positions and only keeps an ellipsoid-shaped area defined by the boundaries of the defined region.
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-- Takes a backup copy of the defined region, runs the given function, and then
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-- restores the bits around the edge that aren't inside the largest ellipsoid that will fit inside the defined region.
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-- @param {Position} pos1 The 1st position defining the region boundary
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-- @param {Position} pos2 The 2nd positioon defining the region boundary
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-- @param {Function} func The function to call that performs the action in question. It is expected that the given function will accept no arguments.
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function worldeditadditions.ellipsoidapply(pos1, pos2, func)
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local time_taken_all = wea_c.get_ms_time()
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pos1, pos2 = Vector3.sort(pos1, pos2)
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-- pos2 will always have the highest co-ordinates now
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-- Fetch the nodes in the specified area
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local manip_before, area_before = worldedit.manip_helpers.init(pos1, pos2)
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local data_before = manip_before:get_data()
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local time_taken_fn = wea_c.get_ms_time()
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func()
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time_taken_fn = wea_c.get_ms_time() - time_taken_fn
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local manip_after, area_after = worldedit.manip_helpers.init(pos1, pos2)
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local data_after = manip_after:get_data()
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local radius = (pos2 - pos1) / 2
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local e_centre = pos2 - radius
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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 comp = (Vector3.new(x, y, z) - e_centre) / radius
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local distance_mult = Vector3.dot(comp, comp)
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-- Roll everything that's outside the ellipse back
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if distance_mult > 1 then
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data_after[area_after:index(x, y, z)] = data_before[area_before:index(x, y, z)]
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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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-- No need to save - this function doesn't actually change anything
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worldedit.manip_helpers.finish(manip_after, data_after)
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time_taken_all = wea_c.get_ms_time() - time_taken_all
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return true, { all = time_taken_all, fn = time_taken_fn }
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end
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