mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-11-27 17:43:53 +01:00
57 lines
1.8 KiB
Lua
57 lines
1.8 KiB
Lua
local wea = worldeditadditions
|
|
local Vector3 = wea.Vector3
|
|
|
|
local make_brush = dofile(wea.modpath.."/lib/sculpt/make_brush.lua")
|
|
|
|
--- Generates a textual preview of a given brush.
|
|
-- @param brush_name string The name of the brush to create a preview for.
|
|
-- @param target_size Vector3 The target size of the brush to create. Default: (10, 10, 0).
|
|
-- @returns bool,string If the operation was successful, true followed by a preview of the brush as a string. If the operation was not successful, false and an error message string is returned instead.
|
|
local function preview_brush(brush_name, target_size, framed)
|
|
if framed == nil then framed = true end
|
|
if not target_size then target_size = Vector3.new(10, 10, 0) end
|
|
local success, brush, brush_size = make_brush(brush_name, target_size)
|
|
|
|
-- Values to map brush pixel values to.
|
|
-- Brush pixel values are first multiplied by 10 before comparing to these numbers
|
|
local values = {}
|
|
values["@"] = 9.5
|
|
values["#"] = 8
|
|
values["="] = 6
|
|
values[":"] = 5
|
|
values["-"] = 4
|
|
values["."] = 1
|
|
values[" "] = 0
|
|
|
|
local frame_vertical = "+"..string.rep("-", math.max(0, brush_size.x)).."+"
|
|
|
|
local result = {}
|
|
if framed then table.insert(result, frame_vertical) end
|
|
|
|
for y = brush_size.y-1, 0, -1 do
|
|
local row = {}
|
|
if framed then table.insert(row, "|") end
|
|
for x = brush_size.x-1, 0, -1 do
|
|
local i = y*brush_size.x + x
|
|
local pixel = " "
|
|
local threshold_cur = -1
|
|
for value,threshold in pairs(values) do
|
|
if brush[i] * 10 > threshold and threshold_cur < threshold then
|
|
pixel = value
|
|
threshold_cur = threshold
|
|
end
|
|
end
|
|
table.insert(row, pixel)
|
|
end
|
|
if framed then table.insert(row, "|") end
|
|
table.insert(result, table.concat(row))
|
|
end
|
|
|
|
if framed then table.insert(result, frame_vertical) end
|
|
|
|
|
|
return true, table.concat(result, "\n")
|
|
end
|
|
|
|
return preview_brush
|