Centralization tool

Features
2

I’ve only been using asesprite since earlier today, and I also think this would be useful. I put together a quick script that does it.

You can grab my script from this git repository.

Here is the current content for anyone who just wants to look… if you want to use it, go to the repository, as that is where I will put any improvements I make:

----------------------------------------------------------------------
-- Center the current selection on the sprite
-- Copyright 2020 Geoff Beier <geoff@tuxpup.com>
-- Licensed under the MIT license. See LICENSE.txt for details.
----------------------------------------------------------------------

-- bail if there's no active sprite
local spr = app.activeSprite
if not spr then return end

-- bail if nothing's selected
local sel = spr.selection
if sel.isEmpty then return end

--print("sel:"..sel.bounds.x..","..sel.bounds.y)

-- The MoveMask command requires us to specify X <units> up, Y <units> down
-- rather than just specifying new coordinates.
new_x = spr.bounds.width/2 - sel.bounds.width/2
x_dir = "right"
x_distance = 0
if new_x < sel.bounds.x then
	x_dir = "left"
	x_distance = sel.bounds.x - new_x
elseif new_x > sel.bounds.x then
	x_dir = "right"
	x_distance = new_x - sel.bounds.x
end

new_y = spr.bounds.height/2 - sel.bounds.height/2
y_dir = "down"
y_distance = 0
if new_y < sel.bounds.y then
	y_dir = "up"
	y_distance = sel.bounds.y - new_y
elseif new_y > sel.bounds.y then
	y_dir = "down"
	y_distance = new_y - sel.bounds.y
end

--print('need to move ' .. x_dir .. ' ' .. tostring(x_distance) .. ' and ' .. y_dir .. ' ' .. tostring(y_distance))

if x_distance ~= 0 then
	app.command.MoveMask{
		direction=x_dir,
		units="pixel",
		quantity=x_distance
	}
end

if y_distance ~= 0 then
	app.command.MoveMask{
		direction=y_dir,
		units="pixel",
		quantity=y_distance
	}
end
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