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https://github.com/sbrl/Minetest-WorldEditAdditions.git
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axes + safeguards
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@ -9,7 +9,10 @@
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-- @param axes=xz string|nil The axes upon which the torus should lay flat.
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-- @param axes=xz string|nil The axes upon which the torus should lay flat.
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-- @param hollow=false boolean Whether the generated torus should be hollow or not.
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-- @param hollow=false boolean Whether the generated torus should be hollow or not.
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function worldeditadditions.torus(position, major_radius, minor_radius, target_node, axes, hollow)
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function worldeditadditions.torus(position, major_radius, minor_radius, target_node, axes, hollow)
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if type(axes) ~= "string" then axes = "xz" end
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local matrix = {x='yz', y='xz', z='xy'}
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if type(axes) ~= "string" then axes = "xz"
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elseif #axes == 1 and axes.match('[xyz]') then axes = matrix[axes]
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else axes = ((axes:match('x') or '')..(axes:match('y') or '')..(axes:match('z') or '')):sub(1,2) end
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-- position = { x, y, z }
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-- position = { x, y, z }
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local total_radius = major_radius + minor_radius
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local total_radius = major_radius + minor_radius
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@ -56,7 +59,7 @@ function worldeditadditions.torus(position, major_radius, minor_radius, target_n
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-- Where:
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-- Where:
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-- (x, y, z) is the point
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-- (x, y, z) is the point
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-- a is the major radius (centre to centre of circle)
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-- a is the major radius (centre to centre of circle)
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-- b is the minor radius (radius of circle
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-- b is the minor radius (radius of circle)
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local comp_a = (sq.x+sq.y+sq.z - (major_radius_sq+minor_radius_sq))
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local comp_a = (sq.x+sq.y+sq.z - (major_radius_sq+minor_radius_sq))
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local test_value = comp_a*comp_a - 4*major_radius*minor_radius*(minor_radius_sq-sq.z)
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local test_value = comp_a*comp_a - 4*major_radius*minor_radius*(minor_radius_sq-sq.z)
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