New commands //hollowdome and //dome, as well as new API functions worldedit.dome and worldedit.hollow_dome. Oh, and spheres generate faster too.

Chat Commands.md

@@ -83,6 +83,22 @@ Add sphere at WorldEdit position 1 with radius <radius>, composed of <node>.
     //sphere 12 default:glass
     //sphere 17 mesecons:mesecon
 
+### //hollowdome <radius> <node>
+
+Add hollow dome at WorldEdit position 1 with radius <radius>, composed of <node>.
+
+    //hollowdome 5 dirt
+    //hollowdome 12 default:glass
+    //hollowdome 17 mesecons:mesecon
+
+### //dome <radius> <node>
+
+Add dome at WorldEdit position 1 with radius <radius>, composed of <node>.
+
+    //dome 5 dirt
+    //dome 12 default:glass
+    //dome 17 mesecons:mesecon
+
 ### //hollowcylinder x/y/z/? <length> <radius> <node>
 
 Add hollow cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>.

WorldEdit API.md

@@ -92,6 +92,18 @@ Adds a sphere at `pos` with radius `radius`, composed of `nodename`.
 
 Returns the number of nodes added.
 
+### count = worldedit.hollow_dome(pos, radius, nodename)
+
+Adds a hollow dome at `pos` with radius `radius`, composed of `nodename`.
+
+Returns the number of nodes added.
+
+### count = worldedit.dome(pos, radius, nodename)
+
+Adds a dome at `pos` with radius `radius`, composed of `nodename`.
+
+Returns the number of nodes added.
+
 ### count = worldedit.hollow_cylinder(pos, axis, length, radius, nodename)
 
 Adds a hollow cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, composed of `nodename`.

worldedit/primitives.lua

@@ -1,10 +1,11 @@
 worldedit = worldedit or {}
 
 --adds a hollow sphere at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
-worldedit.hollow_sphere = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+worldedit.hollow_sphere = function(pos, radius, nodename)
 	local node = {name=nodename}
 	local pos1 = {x=0, y=0, z=0}
-	local full_radius = radius * radius + radius
+	local min_radius = radius * (radius - 1)
+	local max_radius = radius * (radius + 1)
 	local count = 0
 	local env = minetest.env
 	for x = -radius, radius do
@@ -12,9 +13,9 @@ worldedit.hollow_sphere = function(pos, radius, nodename) --wip: use bresenham s
 		for y = -radius, radius do
 			pos1.y = pos.y + y
 			for z = -radius, radius do
-				if x*x+y*y+z*z >= (radius-1) * (radius-1) + (radius-1) and x*x+y*y+z*z <= full_radius then
+				if x*x+y*y+z*z >= min_radius and x*x+y*y+z*z <= max_radius then
 					pos1.z = pos.z + z
-					env:add_node({x=pos.x+x,y=pos.y+y,z=pos.z+z}, node)
+					env:add_node(pos1, node)
 					count = count + 1
 				end
 			end
@@ -24,10 +25,10 @@ worldedit.hollow_sphere = function(pos, radius, nodename) --wip: use bresenham s
 end
 
 --adds a sphere at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
-worldedit.sphere = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+worldedit.sphere = function(pos, radius, nodename)
 	local node = {name=nodename}
 	local pos1 = {x=0, y=0, z=0}
-	local full_radius = radius * radius + radius
+	local max_radius = radius * (radius + 1)
 	local count = 0
 	local env = minetest.env
 	for x = -radius, radius do
@@ -35,7 +36,54 @@ worldedit.sphere = function(pos, radius, nodename) --wip: use bresenham sphere f
 		for y = -radius, radius do
 			pos1.y = pos.y + y
 			for z = -radius, radius do
-				if x*x+y*y+z*z <= full_radius then
+				if x*x+y*y+z*z <= max_radius then
+					pos1.z = pos.z + z
+					env:add_node(pos1, node)
+					count = count + 1
+				end
+			end
+		end
+	end
+	return count
+end
+
+--adds a hollow dome at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
+worldedit.hollow_dome = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+	local node = {name=nodename}
+	local pos1 = {x=0, y=0, z=0}
+	local min_radius = radius * (radius - 1)
+	local max_radius = radius * (radius + 1)
+	local count = 0
+	local env = minetest.env
+	for x = -radius, radius do
+		pos1.x = pos.x + x
+		for y = 0, radius do
+			pos1.y = pos.y + y
+			for z = -radius, radius do
+				if x*x+y*y+z*z >= min_radius and x*x+y*y+z*z <= max_radius then
+					pos1.z = pos.z + z
+					env:add_node(pos1, node)
+					count = count + 1
+				end
+			end
+		end
+	end
+	return count
+end
+
+--adds a dome at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
+worldedit.dome = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+	local node = {name=nodename}
+	local pos1 = {x=0, y=0, z=0}
+	local max_radius = radius * (radius + 1)
+	local count = 0
+	local env = minetest.env
+	for x = -radius, radius do
+		pos1.x = pos.x + x
+		for y = 0, radius do
+			pos1.y = pos.y + y
+			for z = -radius, radius do
+				if x*x+y*y+z*z <= max_radius then
 					pos1.z = pos.z + z
 					env:add_node(pos1, node)
 					count = count + 1

worldedit_commands/init.lua

@@ -279,6 +279,58 @@ minetest.register_chatcommand("/sphere", {
 	end,
 })
 
+minetest.register_chatcommand("/hollowdome", {
+	params = "<radius> <node>",
+	description = "Add hollow dome at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected", false)
+			return
+		end
+
+		local found, _, radius, nodename = param:find("^(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param, false)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param, false)
+			return
+		end
+
+		local count = worldedit.hollow_dome(pos, tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added", false)
+	end,
+})
+
+minetest.register_chatcommand("/dome", {
+	params = "<radius> <node>",
+	description = "Add dome at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected", false)
+			return
+		end
+
+		local found, _, radius, nodename = param:find("^(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param, false)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param, false)
+			return
+		end
+
+		local count = worldedit.dome(pos, tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added", false)
+	end,
+})
+
 minetest.register_chatcommand("/hollowcylinder", {
 	params = "x/y/z/? <length> <radius> <node>",
 	description = "Add hollow cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>",