Update readme.md

init.lua

@@ -1,26 +1,17 @@
 local S = minetest.get_translator("worldedit_commands")
 
-local terraform = {}
+local worldedit_terraform = {}
 
 mh = worldedit.manip_helpers
 
-local radius_limit = minetest.settings:get("radius_limit")
+local radius_limit = tonumber(minetest.settings:get("worldedit_terraform_radius_limit")) or 10
+local threshold_multiplier = tonumber(minetest.settings:get("worldedit_terraform_threshold_multiplier")) or 20
+local gauss_sigma = tonumber(minetest.settings:get("worldedit_terraform_gauss_sigma")) or 4
+local guass_radius = tonumber(minetest.settings:get("worldedit_terraform_guass_radius")) or 2
 
-if (radius_limit == nil) then
-	radius_limit = 10
-	minetest.settings:set("radius_limit",10)
-else
-    radius_limit = tonumber(radius_limit)
-end
-
-
-local threshold_multiplier = minetest.settings:get("threshold_multiplier")
-
-if (threshold_multiplier == nil) then
-	threshold_multiplier = 1
-	minetest.settings:set("threshold_multiplier",1)
-else
-    threshold_multiplier = tonumber(threshold_multiplier)
+if (threshold_multiplier > 100) then
+	threshold_multiplier = 100
+	minetest.settings:set("worldedit_terraform_threshold_multiplier",100)
 end
 
 local function createGaussianKernel(radius, sigma)
@@ -53,12 +44,11 @@ local function createGaussianKernel(radius, sigma)
     return kernel
 end
 
-local kernelradius = 4
-local kernel = createGaussianKernel(kernelradius, 2)
+local kernel = createGaussianKernel(guass_radius, gauss_sigma)
 
-terraform.terraform = function(pos,radius,threshold,shape)
+worldedit_terraform.terraform = function(pos,radius,threshold,shape)
     
-    local manip, area = mh.init_radius(pos, radius+kernelradius)
+    local manip, area = mh.init_radius(pos, radius+guass_radius)
 
 	local data = mh.get_empty_data(area)
 
@@ -68,14 +58,14 @@ terraform.terraform = function(pos,radius,threshold,shape)
 
     local function convolute(conpos)
         local sum = 0
-        for kx = -kernelradius, kernelradius do
-            for ky = -kernelradius, kernelradius do
-                for kz = -kernelradius, kernelradius do
+        for kx = -guass_radius, guass_radius do
+            for ky = -guass_radius, guass_radius do
+                for kz = -guass_radius, guass_radius do
                     local temppos = vector.new(conpos.x + kx, conpos.y + ky, conpos.z + kz)
                     local node = manip:get_node_at(temppos)
                     if node.name ~= "ignore" then
                         if node.name ~= "air" then
-                            sum = sum + kernel[kx + kernelradius + 1][ky + kernelradius + 1][kz + kernelradius + 1]
+                            sum = sum + kernel[kx + guass_radius + 1][ky + guass_radius + 1][kz + guass_radius + 1]
                         end
                     end
                 end
@@ -107,7 +97,7 @@ terraform.terraform = function(pos,radius,threshold,shape)
 	mh.finish(manip, data)
 end
 
-terraform.check_terraform = function(param)
+worldedit_terraform.check_terraform = function(param)
 	local found, _, radius, threshold, shape = param:find("^(%d+)%s+(%d+)%s+(%a+)$")
 	if found == nil then
 		return false
@@ -117,16 +107,17 @@ terraform.check_terraform = function(param)
     if(radius > radius_limit) then radius = radius_limit  end
     if(threshold > 100) then threshold = 100 end
     if(shape == "cube") then shape = true else shape = false end
-	return true, radius, ((threshold/500)*threshold_multiplier)+0.4, shape
+    threshold = 0.5-(threshold_multiplier/200)+((threshold_multiplier*threshold)/10000)
+	return true, radius, threshold, shape
 end
 
 worldedit.register_command("terraform", {
-	params = "<radius> <shape> <threshold offset>",
-	description = S("Terraform the blocks in <shape>(true = cube, false = sphere) at WorldEdit position 1 with radius <radius> and <threshold> [0,100], <radius> is limited to conf max radius."),
+	params = "<radius> <threshold offset> <shape>",
+	description = S("Terraform the blocks in <shape>(\"cube\" or \"sphere\") at WorldEdit position 1 with radius <radius> and <threshold> [0,100], <radius> is limited to configured max radius."),
 	privs = {worldedit=true},
     require_pos = 1,
-    parse = terraform.check_terraform,
+    parse = worldedit_terraform.check_terraform,
 	func = function(name, radius, threshold,shape)
-		terraform.terraform(worldedit.pos1[name], radius, threshold, shape)
+		worldedit_terraform.terraform(worldedit.pos1[name], radius, threshold, shape)
 	end,
 })

mod.conf

@@ -1,5 +1,5 @@
-name = terraform
-title = terraform
+name = worldedit_terraform
+title = worldedit_terraform
 depends = worldedit
 optional_depends = default
 description = a terraform command for worldedit

readme.md

@@ -12,8 +12,10 @@ shape: Shape of the terraform area, either "sphere" or "cube".
 
 ## Settings
 
-radius_limit (int): Maximum allowable radius for the terraform operation.\
-threshold_multiplier (int): Multiplier applied to the threshold value.
+radius_limit: Maximum allowable radius for the terraform operation.\
+threshold_multiplier: Multiplier applied to the threshold value.\
+gauss_sigma: The sigma value used in the generation of the guassian kernel.\
+guass_radius: The radius of the kernel.
 
 ## Examples
 

settingtypes.txt

@@ -1,4 +1,7 @@
-# I recommend not going much higher than 10 as it gets really slow
-radius_limit   (the maximum radius the terraform command can have)  int 10
-# A multiplier for the threshold value for the convolution algorithm
-threshold_multiplier (the internal multiplier for the block placement threshold) int 1
+worldedit_terraform_radius_limit   (The maximum radius of the terraform command)  int 10
+# 20 is default, which ranges the threshold between 0.4 and 0.6 for 0-100 in the command. 0 disables it, 100 ranges it between 0 and 1
+worldedit_terraform_threshold_multiplier (Multiplier for the threshold) int 20
+# lower makes it more center targeted, high makes it more equally distributed
+worldedit_terraform_gauss_sigma (The sigma value for the gaussian kernel) int 4
+# Higher values make it more accurate, but the computation time increase cubic along with the terraform radius
+worldedit_terraform_guass_radius (The radius for the gaussian kernel) int 2