//erode snowballs: make tweaks & add new noconv param

README.md

@@ -290,7 +290,8 @@ velocity_hist_count	| `float`	| 3					| The number of previous history values to
 init_velocity		| `float`	| 0.25				| The maximum random initial velocity of a snowball for each component of the velocity vector.
 scale_iterations	| `float`	| 0.04				| How much to scale erosion by as time goes on. Higher values mean that any given snowball will erode more later on as more steps pass.
 maxdiff				| `float`	| 0.4				| The maximum difference in height (between 0 and 1) that is acceptable as a percentage of the defined region's height.
-count				| `float`	| 50000				| The number of snowballs to simulate.
+count				| `float`	| 25000				| The number of snowballs to simulate.
+noconv				| any		| n/a				| When set to any value, disables to automatic 3x3 gaussian convolution.
 
 If you find any good combinations of these parameters, please [open an issue](https://github.com/sbrl/Minetest-WorldEditAdditions/issues/new) (or a PR!) and let me know! I'll include good combinations here.
 

worldeditadditions/lib/erode/erode.lua

@@ -20,23 +20,21 @@ function worldeditadditions.erode.run(pos1, pos2, algorithm, params)
 	
 	-- print("[erode.run] algorithm: "..algorithm..", params:");
 	-- print(worldeditadditions.map_stringify(params))
-	worldeditadditions.print_2d(heightmap, heightmap_size[1])
-	
+	-- worldeditadditions.print_2d(heightmap, heightmap_size[1])
+	local success, msg, stats
 	if algorithm == "snowballs" then
-		local success, msg = worldeditadditions.erode.snowballs(heightmap, heightmap_eroded, heightmap_size, region_height, params)
+		success, msg = worldeditadditions.erode.snowballs(heightmap, heightmap_eroded, heightmap_size, region_height, params)
 		if not success then return success, msg end
 	else
 		return false, "Error: Unknown algorithm '"..algorithm.."'. Currently implemented algorithms: snowballs (2d; hydraulic-like). Ideas for algorithms to implement are welcome!"
 	end
 	
-	local success, stats = worldeditadditions.apply_heightmap_changes(
+	success, stats = worldeditadditions.apply_heightmap_changes(
 		pos1, pos2, area, data,
 		heightmap, heightmap_eroded, heightmap_size
 	)
 	if not success then return success, stats end
 	worldedit.manip_helpers.finish(manip, data)
 	
-	print("[erode] stats")
-	print(worldeditadditions.map_stringify(stats))
-	return true, stats
+	return true, msg, stats
 end

worldeditadditions/lib/erode/snowballs.lua

@@ -84,14 +84,13 @@ function worldeditadditions.erode.snowballs(heightmap_initial, heightmap, height
 		init_velocity = 0.25,
 		scale_iterations = 0.04,
 		maxdiff = 0.4,
-		count = 50000
+		count = 25000
 	}
 	-- Apply the default settings
 	worldeditadditions.table_apply(params_custom, params)
 	
-	print("[erode/snowballs] params: ")
-	print(worldeditadditions.map_stringify(params))
-	
+	-- print("[erode/snowballs] params: ")
+	-- print(worldeditadditions.map_stringify(params))
 	
 	local normals = worldeditadditions.calculate_normals(heightmap, heightmap_size)
 	
@@ -111,7 +110,7 @@ function worldeditadditions.erode.snowballs(heightmap_initial, heightmap, height
 		if not success then return false, "Error: Failed at snowball "..i..":"..steps end
 	end
 	
-	print("[snowballs] "..#stats_steps.." snowballs simulated, max "..params.max_steps.." steps, averaged ~"..worldeditadditions.average(stats_steps).."")
+	-- print("[snowballs] "..#stats_steps.." snowballs simulated, max "..params.max_steps.." steps, averaged ~"..worldeditadditions.average(stats_steps).."")
 	
 	-- Round everything to the nearest int, since you can't really have
 	-- something like .141592671 of a node
@@ -130,14 +129,16 @@ function worldeditadditions.erode.snowballs(heightmap_initial, heightmap, height
 		end
 	end
 	
-	local success, matrix = worldeditadditions.get_conv_kernel("gaussian", 3, 3)
-	if not success then return success, matrix end
-	matrix_size = {} matrix_size[0] = 3 matrix_size[1] = 3
-	worldeditadditions.conv.convolve(
-		heightmap, heightmap_size,
-		matrix,
-		matrix_size
-	)
+	if not params.noconv then
+		local success, matrix = worldeditadditions.get_conv_kernel("gaussian", 3, 3)
+		if not success then return success, matrix end
+		matrix_size = {} matrix_size[0] = 3 matrix_size[1] = 3
+		worldeditadditions.conv.convolve(
+			heightmap, heightmap_size,
+			matrix,
+			matrix_size
+		)
+	end
 	
-	return true, params.count.." snowballs simulated"
+	return true, ""..#stats_steps.." snowballs simulated, max "..params.max_steps.." steps (average ~"..worldeditadditions.average(stats_steps)..")"
 end

worldeditadditions/utils/tables.lua

@@ -21,10 +21,7 @@ end
 -- @param	source	table	The source to take values from
 -- @param	target	table	The target to write values to
 function worldeditadditions.table_apply(source, target)
-	print("[table_apply] start")
 	for key, value in pairs(source) do
-		print("[table_apply] Applying", key, "=", value)
 		target[key] = value
 	end
-	print("[table_apply] end")
 end

worldeditadditions_commands/commands/convolve.lua

@@ -23,7 +23,6 @@ worldedit.register_command("convolve", {
 		end
 		if #parts >= 2 then
 			local parts_dimension = worldeditadditions.split(parts[2], ",%s*", false)
-			print("[convolve] [str]width", parts_dimension[1], "[str]height", parts_dimension[2])
 			width = tonumber(parts_dimension[1])
 			if not width then
 				return false, "Error: Invalid width (it must be a positive odd integer)."
@@ -52,7 +51,6 @@ worldedit.register_command("convolve", {
 	func = function(name, kernel_name, kernel_width, kernel_height, sigma)
 		local start_time = worldeditadditions.get_ms_time()
 		
-		print("[exec] kernel_width", kernel_width, "kernel_height", kernel_height)
 		local success, kernel = worldeditadditions.get_conv_kernel(kernel_name, kernel_width, kernel_height, sigma)
 		if not success then return success, kernel end
 		

worldeditadditions_commands/commands/erode.lua

@@ -31,14 +31,14 @@ worldedit.register_command("erode", {
 	end,
 	func = function(name, algorithm, params)
 		local start_time = worldeditadditions.get_ms_time()
-		local success, stats = worldeditadditions.erode.run(
+		local success, msg, stats = worldeditadditions.erode.run(
 			worldedit.pos1[name], worldedit.pos2[name],
 			algorithm, params
 		)
-		if not success then return success, stats end
+		if not success then return success, msg end
 		local time_taken = worldeditadditions.get_ms_time() - start_time
 		
 		minetest.log("action", name .. " used //erode "..algorithm.." at " .. worldeditadditions.vector.tostring(worldedit.pos1[name]) .. ", adding " .. stats.added .. " nodes and removing " .. stats.removed .. " nodes in " .. time_taken .. "s")
-		return true, stats.added .. " nodes added and " .. stats.removed .. " nodes removed in " .. worldeditadditions.human_time(time_taken)
+		return true, msg.."\n"..stats.added .. " nodes added and " .. stats.removed .. " nodes removed in " .. worldeditadditions.human_time(time_taken)
 	end
 })