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smooth: add iterations parameter

master
sfan5 2018-05-29 12:05:46 +02:00
parent 7949d8591c
commit 29b80bdef3
2 changed files with 11 additions and 7 deletions
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4
README.md
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@ -24,10 +24,10 @@ Meaning: Add grass on top and change deeper nodes to stone.
Let the map generator generate ores in the selected region, this works with whatever ores mods have registered.
The optional argument specifies which height is used for deciding the ores to generate and defaults to sea level (0).
* `//smooth`
* `//smooth [iterations]`
Smooth terrain in the current selection. When adding nodes, the type of the top-most node in the column is used.
This uses an exponentially weighted moving average (EWMA) and should be ran 1 or 2 times to produce good results.
This uses an exponentially weighted moving average (EWMA) and should be ran with 1 (the default) or 2 iterations to produce good results.
* `//smoothbrush`

14
init.lua
View File

@ -258,7 +258,7 @@ local ewma = function(heightmap, hstride, dim, out)
end
end
local function smooth(pos1, pos2, deadzone)
local function smooth(pos1, pos2, deadzone, iterations)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local dim = vector.add(vector.subtract(pos2, pos1), 1)
if dim.x < 2 or dim.y < 2 or dim.z < 2 then return 0 end
@ -298,6 +298,9 @@ local function smooth(pos1, pos2, deadzone)
-- apply algorithm
local heightmap_new = {}
ewma(heightmap, hstride, dim, heightmap_new)
for i = 2, iterations do
ewma(heightmap_new, hstride, dim, heightmap_new)
end
-- adjust actual heights
local count = 0
@ -393,14 +396,14 @@ minetest.register_chatcommand("/ores", {
worldedit.player_notify(name, "no region selected")
return nil
end
local depth = param ~= "" and tonumber(param) or 0
local depth = tonumber(param) or 0
local count = ores(pos1, pos2, depth)
worldedit.player_notify(name, count .. " nodes updated")
end,
})
minetest.register_chatcommand("/smooth", {
params = "",
params = "[iterations]",
description = "Smooth terrain in current WorldEdit region",
privs = {worldedit=true},
func = function(name, param)
@ -409,7 +412,8 @@ minetest.register_chatcommand("/smooth", {
worldedit.player_notify(name, "no region selected")
return nil
end
local count = smooth(pos1, pos2, {x=0, z=0})
local iterations = tonumber(param) or 1
local count = smooth(pos1, pos2, {x=0, z=0}, iterations)
worldedit.player_notify(name, count .. " nodes updated")
end,
})
@ -477,7 +481,7 @@ minetest.register_chatcommand("/" .. internal_name, {
end
end
smooth(pos1, pos2, {x=dead, z=dead})
smooth(pos1, pos2, {x=dead, z=dead}, 1)
--[[worldedit.pos1[name] = pos1
worldedit.pos2[name] = pos2
worldedit.mark_region(name)--]]