55 lines
2.1 KiB
Lua
55 lines
2.1 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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--- Counts the nodes in a given area.
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-- @param pos1 Vector3 The position to start drawing the line from.
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-- @param pos2 Vector3 The position to draw the line to.
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-- @param thickness number The thickness of the line to draw.
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-- @param node_name string The (normalised) name of the node to draw the line with.
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-- @returns bool,{replaced=number} 1. A bool indicating whether the operation was successful or not.
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-- 2. A table containing statistics. At present the only key in this table is `replaced`, which indicates the number of nodes replaced when drawing the line.
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function worldeditadditions.line(pos1, pos2, thickness, node_name)
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local pos1_sorted, pos2_sorted = Vector3.sort(pos1, pos2)
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-- pos2 will always have the highest co-ordinates now
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pos1 = Vector3.clone(pos1)
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pos2 = Vector3.clone(pos2)
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local node_id_replace = minetest.get_content_id(node_name)
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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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-- z y x is the preferred loop order (because CPU cache I'd guess, since then we're iterating linearly through the data array)
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local counts = { replaced = 0 }
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for z = pos2_sorted.z, pos1_sorted.z, -1 do
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for x = pos2_sorted.x, pos1_sorted.x, -1 do
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for y = pos2_sorted.y, pos1_sorted.y, -1 do
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local here = Vector3.new(x, y, z)
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local D = (pos2 - pos1):normalise()
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local d = Vector3.dot(here - pos1, D)
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local closest_on_line = pos1 + (D * d)
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local distance = (here - closest_on_line):length()
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if distance < thickness then
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data[area:index(x, y, z)] = node_id_replace
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counts.replaced = counts.replaced + 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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-- Save the modified nodes back to disk & return
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worldedit.manip_helpers.finish(manip, data)
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return true, counts
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end
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