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Minetest-WorldEditAdditions
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axes + safeguards

This commit is contained in:
VorTechnix 2021-05-17 10:41:52 -07:00
parent 57ff577694
commit 63d284b35b
1 changed files with 6 additions and 3 deletions
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9
worldeditadditions/lib/torus.lua
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@ -1,4 +1,4 @@
--- Overlap command. Places a specified node on top of
--- Overlap command. Places a specified node on top of
-- @module worldeditadditions.overlay
--- Generates a torus shape at the given position with the given parameters.
@ -9,7 +9,10 @@
-- @param axes=xz string|nil The axes upon which the torus should lay flat.
-- @param hollow=false boolean Whether the generated torus should be hollow or not.
function worldeditadditions.torus(position, major_radius, minor_radius, target_node, axes, hollow)
if type(axes) ~= "string" then axes = "xz" end
local matrix = {x='yz', y='xz', z='xy'}
if type(axes) ~= "string" then axes = "xz"
elseif #axes == 1 and axes.match('[xyz]') then axes = matrix[axes]
else axes = ((axes:match('x') or '')..(axes:match('y') or '')..(axes:match('z') or '')):sub(1,2) end
-- position = { x, y, z }
local total_radius = major_radius + minor_radius
@ -56,7 +59,7 @@ function worldeditadditions.torus(position, major_radius, minor_radius, target_n
-- Where:
-- (x, y, z) is the point
-- a is the major radius (centre to centre of circle)
-- b is the minor radius (radius of circle
-- b is the minor radius (radius of circle)
local comp_a = (sq.x+sq.y+sq.z - (major_radius_sq+minor_radius_sq))
local test_value = comp_a*comp_a - 4*major_radius*minor_radius*(minor_radius_sq-sq.z)