mirror of https://github.com/kepler155c/opus
89 lines
2.0 KiB
Lua
89 lines
2.0 KiB
Lua
local Tween = require('opus.ui.tween')
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local Transition = { }
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function Transition.slideLeft(canvas, args)
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local ticks = args.ticks or 6
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local easing = args.easing or 'inCirc'
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local pos = { x = canvas.ex }
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local tween = Tween.new(ticks, pos, { x = canvas.x }, easing)
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canvas:move(pos.x, canvas.y)
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return function()
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local finished = tween:update(1)
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canvas:move(math.floor(pos.x), canvas.y)
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canvas:dirty(true)
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return not finished
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end
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end
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function Transition.slideRight(canvas, args)
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local ticks = args.ticks or 6
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local easing = args.easing or 'inCirc'
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local pos = { x = -canvas.width }
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local tween = Tween.new(ticks, pos, { x = 1 }, easing)
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canvas:move(pos.x, canvas.y)
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return function()
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local finished = tween:update(1)
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canvas:move(math.floor(pos.x), canvas.y)
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canvas:dirty(true)
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return not finished
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end
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end
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function Transition.expandUp(canvas, args)
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local ticks = args.ticks or 3
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local easing = args.easing or 'linear'
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local pos = { y = canvas.ey + 1 }
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local tween = Tween.new(ticks, pos, { y = canvas.y }, easing)
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canvas:move(canvas.x, pos.y)
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return function()
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local finished = tween:update(1)
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canvas:move(canvas.x, math.floor(pos.y))
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canvas.parent:dirty(true)
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return not finished
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end
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end
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function Transition.shake(canvas, args)
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local ticks = args.ticks or 8
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local i = ticks
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return function()
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i = -i
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canvas:move(canvas.x + i, canvas.y)
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if i > 0 then
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i = i - 2
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end
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return i ~= 0
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end
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end
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function Transition.shuffle(canvas, args)
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local ticks = args.ticks or 4
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local easing = args.easing or 'linear'
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local t = { }
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for _,child in pairs(canvas.children) do
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t[child] = Tween.new(ticks, child, { x = child.x, y = child.y }, easing)
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child.x = math.random(1, canvas.parent.width)
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child.y = math.random(1, canvas.parent.height)
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end
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return function()
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local finished
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for child, tween in pairs(t) do
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finished = tween:update(1)
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child:move(math.floor(child.x), math.floor(child.y))
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end
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return not finished
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end
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end
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return Transition
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